ANALYZER TWIN
Instruction manual
Document Nr. 33.2210D35e
Rel. 1.2
November 2009
Witschi Electronic Ltd
CH 3294 Büren a.A.
Switzerland
Tel.
+41 (0)32 - 352 05 00
Fax
+41 (0)32 - 351 32 92
www.witschi.com
office@witschi.com
Table of Contents
1
GETTING STARTED.
........................................................................................................................
4
2
FIELD OF APPLICATION .
................................................................................................................
4
3
OPERATING ELEMENTS AND DISPLAYS .
......................................................................................
5
3.1
Work Area .
.............................................................................................................................................
5
3.2
Rear panel .
.............................................................................................................................................
6
3.3
Display Panel.
.........................................................................................................................................
7
4
COMMISSIONING.
..........................................................................................................................
7
4.1
Extent of Delivery .
..................................................................................................................................
7
4.2
Place of Installation.
...............................................................................................................................
8
4.3
Mains Connection .
.................................................................................................................................
8
4.4
Printer Connection.
.................................................................................................................................
8
4.5
Language.
...............................................................................................................................................
8
5
GENERAL OPERATION .
..................................................................................................................
9
5.1
Switching the Analyzer Twin On and Off.
...............................................................................................
9
5.2
Selection of a Measurement Function .
...................................................................................................
9
5.3
Parameter Settings .
..............................................................................................................................
10
5.4
Help.
.....................................................................................................................................................
11
6
RATE MEASUREMENT OF QUARTZ WATCHES .
...........................................................................
12
6.1
General Introduction .
...........................................................................................................................
12
6.2
Measurement Sequence .
......................................................................................................................
12
6.3
Result Display.
......................................................................................................................................
13
7
PULSE PARAMETERS .
..................................................................................................................
14
7.1
General Introduction .
...........................................................................................................................
14
7.2
Result Display.
......................................................................................................................................
14
8
LONG-TIME RECORDING (TRACE MODE).
...................................................................................
14
8.1
Result Display.
......................................................................................................................................
14
9
MODULE SUPPLY AND CURRENT MEASUREMENT.
....................................................................
15
9.1
Connecting the Watch.
.........................................................................................................................
15
9.2
Current Measurement .
.........................................................................................................................
16
9.3
Minimum Operating Voltage.
...............................................................................................................
17
9.4
Watch Acceleration .
.............................................................................................................................
17
10
BATTERY TESTING.
.......................................................................................................................
17
10.1
Connecting Points .
...............................................................................................................................
17
10.2
Test Sequence .
.....................................................................................................................................
18
10.3
Result Display.
......................................................................................................................................
18
11
GRAPH OF THE MOTOR PULSE.
...................................................................................................
19
11.1
General Introduction .
...........................................................................................................................
19
11.2
Procedure .
............................................................................................................................................
19
11.3
Result Display.
......................................................................................................................................
19
12
TEST OF COIL RESISTANCE AND COIL INSULATION.
..................................................................
19
12.1
General Introduction .
...........................................................................................................................
19
12.2
Procedure .
............................................................................................................................................
20
12.3
Result Display.
......................................................................................................................................
20
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Analyzer Twin
Witschi Electronic Ltd
13
TEST OF STEP MOTORS WITH THE SIGNAL GENERATOR .
.........................................................
21
13.1
Field of Application .
.............................................................................................................................
21
13.2
Procedure .
............................................................................................................................................
21
14
BUZZER TEST .
..............................................................................................................................
22
14.1
Field of Application .
.............................................................................................................................
22
14.2
Procedure .
............................................................................................................................................
22
15
TESTING MECHANICAL WATCHES.
.............................................................................................
23
15.1
General Introduction .
...........................................................................................................................
23
15.2
Procedure .
............................................................................................................................................
23
15.3
Display of the Results .
..........................................................................................................................
24
16
ADDITIONAL TECHNICAL INFORMATION.
..................................................................................
28
16.1
Signal Sources for Rate Measurement.
.................................................................................................
28
16.2
Watches with Inhibition Compensation.
...............................................................................................
30
16.3
Influence of the Temperature .
..............................................................................................................
31
16.4
Typical Values of the Rate Deviation .
...................................................................................................
31
16.5
Motor Pulse Analysis.
...........................................................................................................................
32
16.6
End Of Life (EOL) Function.
...................................................................................................................
33
16.7
Battery Testing .
....................................................................................................................................
33
17
SYSTEM PARAMETERS.
...............................................................................................................
34
17.1
Procedure .
............................................................................................................................................
34
17.2
TYPE General.
.......................................................................................................................................
35
17.3
TYPE Interfaces PRINTER.
.....................................................................................................................
36
17.4
TYPE Info.
.............................................................................................................................................
38
18
CONNECTION TO A PC .
...............................................................................................................
38
18.1
Field of Application .
.............................................................................................................................
38
18.2
Installation .
..........................................................................................................................................
38
19
MAINTENANCE.
...........................................................................................................................
39
20
TECHNICAL DATA.
.......................................................................................................................
39
20.1
Measurement Functions .
......................................................................................................................
39
20.2
Additional Functions.
............................................................................................................................
42
20.3
Options.
................................................................................................................................................
42
20.4
General Data .
.......................................................................................................................................
42
21
ACCESSORIES.
.............................................................................................................................
44
Witschi Electronic Ltd
Analyzer Twin
Page 3
Congratulations!
You made the right choice.
You bought ANALYZER TWIN, an extremely accurate test instrument, technically reliable as well as
easy to handle and operate.
Follow the given instructions regarding usage and maintenance and you will enjoy this new
instrument for quite a long time. It will be a pleasure and will prove profitable for you to use this
device.
1
GETTING STARTED
Please read carefully all the information contained in this manual.
Strictly follow the operating instructions, which will help you to use
and safely operate our product. Keep this manual in a safe place near
the instrument and give it to any other user.
The facility must be used only for the aims and purposes described in this very manual and must be
set up and operated as described and under the conditions herein specified.
The Manufacturer, Witschi Electronic AG in CH-3294 BÜREN a.A., SWITZERLAND takes
no responsibility and offers no warranty for damages that may follow from the non-
observance of these directives or from inappropriate handling, such as damages to
the checking device, to watches and/or people.
2
FIELD OF APPLICATION
ANALYZER TWIN is the perfect test instrument to be used quickly and efficiently in the repair
service, in the sales department and the watch-testing lab.
A new technology provides extended test and measurement facilities, allowing a professional
troubleshooting of quartz watches. Largely automated measuring cycles provided by the instrument
result in an unmatched user-friendliness.
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Analyzer Twin
Witschi Electronic Ltd
3
OPERATING ELEMENTS AND DISPLAYS
3.1
Work Area
ANALYZER TWIN
Operating Elements
signal sensor
Signal transducer for capacitive, magnetic and acoustic signals.
Rotary knob for selecting measuring functions and setting up
parameters.
It has a twofold function: functions, parameters or information are
selected by rotating the knob and activated by pressing it.
Short pressure on the knob
Activates the selected function or
parameter settings.
Long pressure on the knob
Back to main menu
Key for printing the measurement log or transferring measurements to
a PC.
print
Short pressure on the key
Current results printed as a
measurement log
Long pressure on the key
Screen contents printed as a
graphic image
Key for starting and stopping a measurement.
start/stop
Short pressure on the key
The current measurement is
stopped and immediately
restarted.
Long pressure on the key
The measurement is stopped until
it is restarted by shortly pressing
the key.
+ battery
+ battery support for the battery test.
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Analyzer Twin
Page 5
LED Displays
step. motor
Signal level of the motor pulses, signal acquisition magnetic or
through the supply current.
LCD display
Signal level of the LCD signal (capacitive).
quartz 32kHz
Level of the 32 kHz quartz signal (acoustic, capacitive or through the
supply current).
mechanical
Signal level of the watch noise (acoustic).
Connections
+ battery
+ battery support for the battery test.
+ supply -
Connections for the direct supply of modules or watch movements
with two movable contact probes.
3.2
Rear panel
Rear panel
I
O
Main switch for switching the system on / off.
module supply
–
+
Connections for the direct supply of modules or watch movements
with cable set and probe tips.
power
9V~ 1.2A
Connection socket for mains adapter, either 230 V~ or 120 V~.
USB interface.
printer
RS232 interface for the Witschi thermo printer.
calibration
RS232 interface for Witschi’s GPS receiver.
sensor
Connection socket for external signal transducers.
microph.
Connection socket for external microphone (only available with
Analyzer Twin).
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Witschi Electronic Ltd
3.3
Display Panel
The display panel, which can be tilted to the best viewing angle, is equipped with a LED lighted
¼ VGA TFT colour graphic screen (320x240 dots).
Main menu
Rate and consumption test menu
The display is divided into several fields
•
The right-hand bar contains the symbols for the miscellaneous measurement functions. The
selected function has a white background and is indicated by a white arrow
W
.
•
The parameters and information belonging to the selected function are displayed on the
lower horizontal bar and can be selected there. The selected parameter has a white
background and blinks.
•
The current numerical and graphical results are displayed on a white background in the result
field.
This field also contains information or parameters depending on the selected function.
•
An information line under the result field contains information on the current measurement
4
COMMISSIONING
4.1
Extent of Delivery
•
The basic equipment comprises the following components:
•
Test instrument ANALYZER TWIN.
•
Stand Microphone.
•
Mains adapter 230 V~ or 120 V~.
•
2 cables with probe tips.
•
Pair of movable contact probes.
•
Movement holder.
•
Dust-proof cover.
•
Instruction manual.
Witschi Electronic Ltd
Analyzer Twin
Page 7
4.2
Place of Installation
Signal acquisition can be
disturbed by electrical and magnetic stray
fields from electrical equipment. Computer terminals, fluorescent
lamps and ultrasonic cleaning equipment cause especially strong
interferences. It is therefore necessary to place the equipment far
enough from such interference sources. The influence of interfering
electromagnetic radiations may prevent the instrument of
functioning flawlessly.
4.3
Mains Connection
A mains adapter supplies ANALYZER TWIN with a 9 V~ output alternating voltage and a 1.2 A
output current. The mains adapter can be provided for a 230 V~ mains voltage (from 210 V~ to 240
V~) or a 120 V~ mains voltage (from 110 V~ to 130 V~).
Before connecting for the first time, make sure that the
voltage of the mains adapter corresponds to the voltage of
your mains.
Only use the original Witschi mains adapter!
Connect the mains adapter to the appropriate socket on the rear panel of the instrument.
We recommend disconnecting the mains adapter from the mains during longer idle periods, e.g.
vacations.
4.4
Printer Connection
Connect the printer available as an accessory, to the
printer
connector. The connecting cable is
delivered together with the printer.
Caution!
Before connecting the printer, make sure that the voltage of its power supply
corresponds to the voltage of your mains.
4.5
Language
If the preset language or other system parameters do not correspond to your requirements, you can
modify them in the
System parameters
menu (see chapter 17.2)
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Witschi Electronic Ltd
5
GENERAL OPERATION
5.1
Switching the Analyzer Twin On and Off
The mains switch for switching the instrument on and off is located on its rear panel.
4 to 5 seconds after the instrument has been switched on
, the following information
appears during the stabilisation period of the time base: Name and address of the manufacturer,
instrument type, firmware version, date of last calibration, time and date, as well as ambient
temperature (if temperature display switched on).
The instrument jumps to the main menu and is ready to function at the end of the stabilisation
period (20 s).
If no measurement is performed for a long time (can be set in
System parameters
menu), the
instrument automatically switches to standby mode in which the display lighting is switched off. The
consumption of < 7 W in standby mode is negligible.
The instrument can be “woken up” from the standby mode by pressing any key.
We recommend only switching off the instrument during longer idle periods. Switching often the
instrument on and off influences the stability of the time base.
Shouldn’t you need to use the device for an extended period (e.g. vacations), it is recommended to
disconnect the mains adapter from the mains.
5.2
Selection of a Measurement Function
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Analyzer Twin
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Automatic Selection
In automatic test mode (selected in
System parameters
menu) the measurement functions
Rate and
consumption test,
Battery test
and
Mechanical watch test
are automatically selected as soon
as the instrument receives an exploitable watch signal. In this way, the measurements that are most
often carried out can be performed without accessing the instrument at all.
If the signal is no longer available, the measurement function that has been automatically selected
remains active for a few seconds before the instrument jumps back to the main menu.
Manual Selection
The measurement functions
Resistance (coil) test, Graph of the motor pulse
and
Signal
generator
must be manually selected.
The other functions that can be automatically selected can also be manually selected (e.g. for batch
testing).
A manually selected function remains active until a jump back to the main menu has
occurred (also when no signal is available).
Place the
W
arrow (on the right-hand side of the display) on the desired function by rotating the
knob. Then press the rotary knob for activating the function.
When a function has been selected, the cursor jumps to the parameter line of the selected
measurement function.
To return to the main menu, place the cursor on the
Back
arrow
±
by rotating the knob, and then
press it. You can also keep the rotary knob pressed until the instrument jumps directly to the main
menu.
5.3
Parameter Settings
The cursor jumps to the parameter line after a function has been activated. The parameters differ
according to the function.
After a measurement function has been selected, all parameters are set to the most commonly
preferred values. Modified parameters are reset to the preferred values when the measurement
function is exited.
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Witschi Electronic Ltd
Die Parameters
SIGNAL
and
TIME
can be automatically selected by the instrument; they are
identified with the label
Auto
and the current automatically determined value. The automatic
selection can be overridden by a manual selection.
A manual selection must only be used when measurements is to be carried out with a deliberately
chosen value different from the automatically determined value.
Procedure
•
Use the rotary knob to select the parameter to be set. The current parameter setting will appear
on a rhythmically blinking white background.
•
Press the rotary knob.
A white arrow
>
appears on the left of the parameter setting.
•
Use the rotary knob to select the desired parameter setting.
•
Finally, press the rotary knob to confirm the setting.
You can then select other parameters to carry out other setting operations.
Please note: Some parameters
react immediately to any change (without confirmation by pressing
the rotary knob). This can be used for instance for modifying the module supply voltage.
Back to Main Menu
•
Use the rotary knob to select arrow
±
.
Pressing the rotary knob sends you back to the main
menu.
•
Alternatively, keep the rotary knob pressed for approx. 2 seconds. A short beep confirms the
return to the main menu. The position of the cursor does not play any role in this case.
5.4
Help
The
HELP
parameter caption allows retrieving information about parameter selection or the
interpretation of measurement results.
Select parameter
HELP
and press the rotary knob.
Select
Parameters
or
Results
according to the information desired.
Press the rotary knob once more to go back to measurement.
Witschi Electronic Ltd
Analyzer Twin
Page 11
6
RATE MEASUREMENT OF QUARTZ WATCHES
6.1
General Introduction
Signal Acquisition
The Analyzer Twin is equipped with a single transducer for acoustic, capacitive and magnetic signal
acquisition. It allows checking watches with closed wristlet, open watches and movements.
If the watch is supplied from the Analyzer Twin, its rate deviation is derived from the supply current
(see chapter 9.2).
When the
SIGNAL
parameter is set to
Auto
, the instrument automatically selects the suitable signal
source according to the watch signal. You can also select manually another signal source.
Caution
Due to the danger of faulty measurements in the case of watches with inhibition
compensation, this signal source
Quartz
is not selected automatically. To perform a
rate measurement through the quartz frequency, it is necessary to select manually the
Quartz
signal source with the
SIGNAL
parameter.
Additional information about the selection of the signal source is available in chapter 16.1
Measurement time
The measurement time for analogue watches must correspond to a pulse period of the stepping
motor or to a multiple thereof. Watches with inhibition compensation must be tested over an
inhibition period or a multiple thereof.
When the
TIME
parameter is set to
Auto,
the rate is first measured with the shortest possible
measurement time. If the rate deviation exceeds ± 0.5 s/d, the instrument “assumes” it is dealing
with an inhibition compensation watch. The measurement time is automatically set to 60s, a value
that matches most of the watches with inhibition compensation. If a shorter or longer inhibition
period is detected during measurement (e.g. 10 s or 120 s), the measurement time is modified
accordingly. Additional information about inhibition watches is available in chapter 16.2
The measurement time can be manually selected for special measurements.
6.2
Measurement Sequence
The watch is placed on the transducer and can be shifted to some extent if necessary until the signal
LED lights up strongly or blinks.
LCD watches must be positioned on the signal transducer with the dial face
downward.
Measurement starts automatically from the main menu as soon as an exploitable signal is detected.
The instrument jumps to test mode
Rate and consumption test.
The suitable signal source (magnetic motor pulse, current pulse or LCD display frequency) is
automatically selected. The measurement time needed for measurement is also automatically
determined. It is only necessary to set up the instrument if measurement is to be deliberately carried
out with parameters other than those automatically selected (see chapter 17.2).
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Analyzer Twin
Witschi Electronic Ltd
The information line displays the indication
check
until the instrument has determined the
measurement parameters.
As soon as the measurement proper starts, the indication
Run
appears on the information line and a
countdown counter indicates the remaining measurement time. The start of the measurement
process is also audibly signalled.
The result is displayed once the measurement time has elapsed. The measurement is continuously
performed as long as an exploitable signal is available. In the case of longer measurement times,
result updates are audibly signalled.
A running measurement can be interrupted and restarted by briefly pressing the
start/stop
key.
If the watch signal lies outside of the measurement range (
±
325 s/d) or is so distorted that an
evaluation is not possible, the message
out of range
or
unstable
appears on the information line.
If the signal is no longer available, the indication
No Signal
appears and the instrument jumps to the
main menu after a while.
Caution!
If a watch is supplied from the Analyzer Twin, it is not possible to test another watch
with the sensor.
6.3
Result Display
In
Numeric
mode, the current results are displayed in numerical and graphical analogue form.
The actual rate deviation is displayed with large size characters in the upper left-hand part of the
result field at the end of the measurement time.
The deviation of the quartz frequency is also displayed for informational purpose with smaller
characters in the upper right-hand part of the result field. (In the case of watches with inhibition
compensation, the deviation of the quartz frequency does not correspond to the actual rate
deviation).
The instantaneous rate deviation also appears in graphical form on a logarithmic scale. The
instantaneous value is always measured with the shortest possible measurement time (2 s in most
cases), irrespective of the selected measurement time.
Additional results from pulse analysis that are displayed in the case of analogue watches are
described in chapter 7.
Witschi Electronic Ltd
Analyzer Twin
Page 13
7
PULSE PARAMETERS
7.1
General Introduction
In the case of the rate measurement based on the magnetic or current stepping motor pulses, the
instrument also analyzes the motor pulses. This analysis provides valuable information on the
operation of the watch module. In particular, the present power level of watches with adaptive motor
pulses (Asservissement) can be determined without opening the watch (see chapter 16.5).
7.2
Result Display
The following pulse parameters are measured and displayed:
Motor period
and display of the
End of Life
function.
Inhibition
(see chapter 16.2)
Pulse Width
Drive Level
(
percentage of the chopping level, see chapter 16.5).
The chopping level is also graphically represented as a bar diagram.
8
LONG-TIME RECORDING (TRACE MODE)
When the
MODE
parameter is set to
Trace
, a long-time recording of the rate deviation and of the
chopping level is performed as a diagram.
Long-time recording includes changes in the rate deviation (e.g. caused by temperature variations)
as well as changes in the chopping level of watches with adaptive motor pulses (e.g. caused by a
change of date) for a duration reaching 8 minutes up to 60 hours.
8.1
Result Display
The upper part of the display contains the rate measurement diagram and the lower part the power
level of the chopping pulses.
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Analyzer Twin
Witschi Electronic Ltd
Time Scale
One point is recorded for each measurement; the recording length is equal to 240 points. The time
scale is therefore determined by the selected measurement time. In our example, the diagram has
been recorded for 4 hours (1 point per minute).
Exiting the Trace Mode
To avoid inadvertently deleting the results of a long-time recording, the instrument does not return
automatically from the
Trace
mode to the main menu when the signal is not available any longer. It
is necessary to leave the
Trace
mode by manually selecting another mode or by manually returning
to the main menu.
9
MODULE SUPPLY AND CURRENT MEASUREMENT
9.1
Connecting the Watch
Caution!
The watch can be damaged if the power is fed to the wrong locations or
with the wrong polarity.
It is necessary to remove the battery from the watch to measure the consumption and the lowest
start voltage.
To connect the watch or the movement, it is clamped into the module holder and laid onto the glass
surface of the instrument. The movable contact probes with telescopic probes are put onto the
connection points of the watch and pressed down to such an extent that they are retracted by
approximately 1 mm. To adjust the height, catch hold of the rear end of the contact probes.
Place the red
+
probe onto a point known to be connected to the
+
terminal of the battery (battery
case). The entire plate of most watches is connected to the
+
terminal.
Place the black
–
probe onto a point known to be connected to the
–
terminal of the battery (battery
cover). In most watches, the contact spring is the most accessible point connected to the
–
battery
terminal.
To avoid interferences, the measurement cables connected to the rear part of the
instrument do not belong to the measuring path of the current and cannot be used
to measure currents.
If a watch is too big or if its wristlet is closed, so that the probes cannot be used for establishing the
contact, the measurement cables can be used instead of the probes by connecting them to the base
plate. Since the probe tips are held with the hand during measurement, the resulting interferences
may impair the stability of the measurement results.
If the contacts are performed correctly, the
quartz 32kHz
LED
lights up and the
step motor
LED blinks
to the rhythm of the step motor.
The mirror underneath the support allows you to watch the hands of the watch. If the watch is
running, the contacts have been correctly set up.
The consumption and rate measurement starts automatically from the main menu as soon as the
instrument detects a current.
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Analyzer Twin
Page 15
9.2
Current Measurement
9.2.1
General Introduction
The current consumption of a quartz watch constitutes an important quality criterion and indicates
the expected lifetime of the battery.
The current of analogue quartz watches is composed of the IC current and of the current spikes
associated with motor pulses. The instrument IC captures the value of the IC current as well as the
value of the overall average current during the measurement time (integrating measurement).
9.2.2
Selection of the Supply Voltage
For performing current and rate measurements through the supply current, select the nominal
voltage according to the battery type.
The nominal voltage of the most widely used silver oxide batteries is equal to 1.55 V. This value is
automatically selected when the measurement function is started.
Most of the less frequently used lithium batteries have a nominal voltage of 3 V.
When the
VOLT
parameter is selected, the supply power can be adjusted with the rotary knob in the
range from 0 to 3.5 V.
9.2.3
Measurement Time
The measurement time for correctly determining the average consumption of analogue watches
must correspond to a pulse period of the stepping motor or to a multiple thereof.
When the
TIME
parameter is set to
Auto
, the measurements are performed automatically over 2
pulse periods and, in the case of watches with pulse period >5 s, over a single pulse period.
Another measurement time can be selected manually for carrying out special measurements. The
manually selected measurement time is identical for the rate and consumption measurements.
The IC current is always measured during a 2 s measurement time.
The IC current of LCD watches is the total current.
Please note: The first result for the total current of LCD watches only appears after 35 s.
9.2.4
Result Display
The results for the current are only displayed when a current is flowing; they are masked when there
isn’t any current flowing.
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Witschi Electronic Ltd
The total current and the IC current are displayed separately.
In addition, the instantaneous consumption appears in graphical form on a logarithmic scale. The
instantaneous value is always measured with a 2 s measurement time, irrespective of the selected
measurement time.
The rate deviation is measured at the same time as the current measurement and the pulse
parameters are analyzed (see chapter 7).
Typical values
The manufacturer data are binding as regards the maximal admissible consumption of the watch.
The typical current consumption of a modern analogue quartz watch with seconds lies
approximately between 0.8 and 1.2 μA and approximately between 0.5 and 0.7 μA for watches with
a longer pulse period (without seconds).
9.3
Minimum Operating Voltage
The minimum operating voltage supplies information on the power reserve of the watch and its
capability to function even with a nearly exhausted or strongly stressed battery. The correct
operation of the
End Of Life
(
EOL
) function can also be tested by decreasing the voltage (see chapter
16.6).
Please note: Various voltage-dependent functions of the watch, such as
Asservissement
or
End of
Life,
react to change in voltage with a delay of up to 4 minutes.
The supplied voltage is decreased by steps, while observing the hands of the watch in the mirror
until the watch stops, and then slowly increased once more until it runs again.
The
VOLT
parameter reacts immediately to any change, i.e. without acknowledgment by pressing
the rotary knob. Pressing the rotary knob is only necessary when exiting from the parameter.
It is usually enough to test the correct operation of the watch with a reduced supply voltage. The
minimum operating voltage of watches with a silver oxide battery is equal to 1.2 V in most cases.
9.4
Watch Acceleration
Many watch modules are equipped with a test point (mostly designated by R/T) accessible on the
electronic module. The acceleration and reset functions can be activated with this test point. This
can be achieved by using the probe tip to establish a contact with the test point in addition to the
supply with contact probes. With most movements, establishing a contact with the +terminal
activates
Reset
(the motor pulses are disabled) while establishing a contact with the –terminal
activates the acceleration.
For additional information, kindly refer to technical information for this particular movement.
In accelerated mode, the watch performs 16 or 32 steps per second. The motion of the hands can be
observed in the mirror and mechanical problems, e.g. due to hands touching or to the change of
date can be identified quickly.
10
BATTERY TESTING
10.1
Connecting Points
Place the
+
side of the battery to be tested on the contact surface of the
battery
support and
establish the contact with the
–
side using the black contact probe or the black probe tip.
Witschi Electronic Ltd
Analyzer Twin
Page 17
In most cases, the battery can also be directly tested in the open watch by means of the probe tips.
Pay attention to the polarity of the battery when testing it.
-
In the case of a standard silver oxide battery, the case corresponds to the
+
terminal and the case
cover to the
–
terminal.
-
In the case of batteries for large-sized watches, the case corresponds to the – terminal and the
contact on the case cover to the
+
terminal.
-
Lithium batteries are available in different executions. Check the indications on the battery (+ or –
sign) or the indications from the manufacturer.
10.2
Test Sequence
In automatic test mode, the instrument automatically detects that a battery has been connected
and switches to the
Battery test
mode. The
Battery test
mode can also be selected manually.
The voltage with a minimal load demand (
No Load
) is continuously measured and displayed.
A load of 2 k
Ω
is switched on once per second for 10ms; it simulates the step motor. The voltage
associated to this load (
Low Drain
)
is continuously determined and displayed.
To measure the voltage with a high load demand (
High Drain
), briefly press the start button; this
will switch on the load for 1 s. This load simulates the lighting or alarm function.
The
High Drain
measurement should not be repeated several times since the high load demand
quickly drains the battery.
10.3
Result Display
The voltage without load is displayed in analogue form in addition to the numerical results.
The
High Drain
voltage is only displayed when this measurement has been initialized by pressing the
start button.
Additional information about battery test is available in chapter 16.7.
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11
GRAPH OF THE MOTOR PULSE
11.1
General Introduction
The Analyzer Twin can record the motor current pulse as an oscillogram. In addition to the pulse
parameters, the shape of the current pulse provides additional information on the state of the watch.
In particular, faults can be detected in the mechanical part of the watch by comparing its
measurements to those of a watch of the same type in good condition.
Additional information about motor pulse analysis is available in chapter 16.5.
11.2
Procedure
-
Supply the watch with the Analyzer Twin according to chapter 9.1
-
Select the
Graph of the motor pulse
function in the main menu
-
The time scale can be selected with the
RANGE
parameter according to the pulse width.
-
The measurement is usually performed with the nominal voltage corresponding to the battery
(1.55V for watches with a silver oxide battery). The voltage can be changed with the
VOLT
parameter, e.g. for testing the operation of the watch under reduced supply voltage.
11.3
Result Display
The positive and the negative watch pulses are represented alternatively as an oscillogram. Every third
pulse is drawn with watches having a period of 1 second; every single pulse is drawn with watches
having a longer period.
In addition, the pulse width and the chopping level (Drive Level) are displayed in numerical form.
12
TEST OF COIL RESISTANCE AND COIL INSULATION
12.1
General Introduction
The resistance test is primarily used to detect breaks or short-circuits in the motor coil of analogue
watches or insulation faults between the coil and its core or the coil and the plate. The Resistance
(coil) test, however, is also useful for testing the continuity and insulation of connections, strip
conductors and switches.
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12.2
Procedure
Please note:
The resistance test is performed with a very low voltage, to avoid damaging the watch
because of a wrong connection.
It is necessary to remove the battery from the watch to perform any resistance test.
Select the
Resistance (coil) test
function in the main menu.
Coil Resistance
Connect both wiring points of the coil to the movable contact probes or to the probe tips. The
polarity is irrelevant.
If the measuring points cannot be located, refer to the data sheet of the module to be tested.
Coil insulation
Connect the movable contact probes or the probe tips to a wiring point of the coil and to the
movement plate.
12.3
Result Display
The measured resistance value is displayed in numerical form.
If there is no conducting path between the measuring points,
open
is displayed.
Short
is displayed, if a short circuit is detected.
In addition, the
step motor
LED lights up when a conducting path is detected.
Typical Values
The coil resistance of analogue watches lies between 1 and 2 k
Ω
. For exact values, kindly refer to
technical data for the watch module
Open
is displayed when there is a break in the coil. A shorted coil leads to too small a measured
resistance value.
When testing the insulation between coil and plate, the instrument should display
open
or a value
greater than 1 M
Ω
.
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13
TEST OF STEP MOTORS WITH THE SIGNAL GENERATOR
13.1
Field of Application
The step motor and the mechanical part of a quartz analogue watch can be tested with the signal
generator independently of the electronic circuit.
The step motor can be accelerated for detecting quickly mechanical faults such as hands catching
each other or problems with the change of date.
13.2
Procedure
It is necessary to remove the battery from the watch to test the step motor.
-
Select the
Signal generator
function in the main menu.
Select the
Motor
mode
-
Select the pulse width (
WIDTH
)
and the chopping level (
PULSE
) according to the data needed for
testing the watch.
For an acceleration test, select the 16 Hz pulse frequency under
FREQ
.
If the watch data are unknown, the preferred values, displayed when the function is selected,
provide satisfactory results in most cases.
-
Select a voltage lower by approximately 0.2 V than the nominal voltage of the watch battery
(1.35 V for watches with a silver oxide battery).This takes into account the voltage loss that
occurs in the watch IC during the motor pulse.
The selected pulse shape is represented graphically on the display.
-
Draw the movement onto the movement holder and place the latter on the glass window of the
instrument.
-
Connect both wiring points of the coil to the movable contact probes. The polarity is irrelevant.
If the wiring points cannot be located, refer to the data sheet of the module to be tested.
-
Check in the mirror if the seconds-hand is moving.
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-
You can check the start voltage of the motor by decreasing the voltage (
VOLT
parameter)
stepwise until the watch stops running. Watch the seconds-hand while increasing the voltage
stepwise until the hand rotates again.
You can also decrease stepwise the parameters
Width
and
Pulse
to determine the operating
limits of the module.
14
BUZZER TEST
14.1
Field of Application
The Analyzer Twin can also test acoustic alarm transmitters of alarm watches. The instrument provides
a bipolar test signal with adjustable voltage and a fixed frequency of 2 kHz.
14.2
Procedure
It is necessary to remove the battery from the watch to test the buzzer.
-
Select the
Signal generator
function in the main menu.
Select the
Buzzer
mode
-
Connect both wiring points of the buzzer to the movable contact probes or to the probe tips. The
polarity is irrelevant.
Please note: There are different ways to drive audible sound transmitters. The loudness obtained with
the pulse generator test can therefore differ from the loudness in normal operation.
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15
TESTING MECHANICAL WATCHES
15.1
General Introduction
The Analyzer Twin can measure the rate, the amplitude and the beat error (Repère) of mechanical
watches.
15.2
Procedure
In automatic test mode, the instrument detects automatically that a mechanical watch has been
laid and selects the
Mechanical watch test
mode. This test mode can also be selected manually.
Place the watch to be tested on the microphone in such a way that the crown lies between the metal
leads of the signal sensor. Turn the microphone into the desired test position. The microphone can be
turned in six different test positions; 2 horizontal and four vertical positions.
The
mechanical
LED indicates the strength of the recorded signal.
Before you start a measurement, following parameters must be adjusted:
TIME
Measuring time: 2, 4, 8, 10, 20, 60, 120, 480 and 960 seconds.
ANGLE
Lift angle: adjustable from 10° to 90°.
GAIN
Gain of the watch signal: adjustable from 1 to 4. Standard setting = 2.
OPTION
Stnd.
Standard mode for watches with the Swiss escapement.
Spe1
Mode for watches with coaxial escapement.
Spe2
Mode for watches with AP escapement.
MODE
Here you can select one, in the following described, display mode.
Remark
All common beat numbers are selected automatically. The beat number used for the measurement is
displayed in MODUS
Vario
and
Numeric
. A manual selection is not possible.
By means of a short pressure on the start/stop button you can interrupt a measurement, and by
renewed press the measurement continues again. The measurement stops and restarts, if you keep the
button pressed down until a beep sounds.
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15.3
Display of the Results
As long as a measurement runs, you may change from one to the other display mode. The
measurement will not be interrupted.
15.3.1
Diagram
The diagram is continuously drawn. Due to the display principle of the LCD graphic screen, the points
of the diagram are shown as screen dots (pixels) on the display. These dots are placed at a distance of
0.36 mm from each other. An inclined diagram is thus always shown as a staircase with 0.36 mm
steps; the distance between the lines will of course be a multiple of 0.36 mm.
The numeric measurement values of rate, amplitude and beat error are displayed at the first expiration
of the measuring time.
If you set up a longer measuring time, the result will be calculated as the average of the single
measurements. The average is continuously re-calculated every 2 s; this means that in case of a
10 s measuring time, the last 5 measurements each 2 s will always be considered as valid for
computing the average value.
Date, time and the ambient temperature are also indicated.
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15.3.2
Vario
The display Vario display mode provides a clear check of the rate stability over a long period of time,
to maximally 99:59:59 hours.
In the upper display part (black) appear the average measuring values of the rate, amplitude and beat
error over the programmed measuring time (for our example 10s).
The analysis of rate variation occurs over the entire time run since the measuring start. The period
of time (in our example 00:24:43) is displayed above the analyzed values.
The analysis of all results of the rate measurement determines the stray of the rate, based on the
measuring time (for our example 10s), and integrated over the entire time run since the measuring
start:
-
minimal rate and amplitude (Rmin & Amin) – lowest value since measuring start
-
maximal rate and amplitude (Rmax & Amax) – highest value since measuring start
-
average rate and amplitude (Ravg & Aavg) – average value over the entire time run.
Each numeric value of the rate measurement is presented on the linear time scale with the a
green
±
.
Checking the rate quality:
The evaluation of the quality takes place via the interpretation of the 2 analyzed rate values.
-
The difference between the minimum (Rmin & Amin) and the maximum (Rmax & Amax)
value,s presented with the marks
I
and
I
, is a quality indicator of the watches condition. The
smaller the difference the better is the rate stability.
-
The average value
x
(Ravg & Aavg) is an indicator for the adjustment quality of the watch
movement.
Remark
A revision of the watch is necessary, if the difference related to the nominal value is too high.
If the average value is too far from the desired value, then an adjustment is necessary.
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Page 25
15.3.3
Vario
The graphic/numeric display mode allows a quick and simple overview of the measuring values.
In the numeric display part appear the average measuring values of the rate, amplitude and beat error
over the programmed measuring time.
In the linear display part appear continuously the instantaneous measuring values by means of the
green
±
.
Beat number, elapsed measuring time, Date, time and the ambient temperature are also indicated.
15.3.4
Trace
The Trace mode allows the record of the rate deviation and the amplitude as a function of the
measuring time. The trace duration goes from 8 minutes to maximum 64 hours.
In our example 40 minutes, for a measuring time of 10 seconds.
Thus, regularly arising deviations (i.e. error in gear train) can be detected and localised.
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15.3.5
Position
Th. Proceed as follows:
•
Turn the microphone into the first test position
•
Keep the
start/stop
button pressed until the beep sounds. The measurement starts.
•
Observe the time run off of the measurement on Pos 1 (displayed in red). Press shortly the
start/stop
button as soon as the desired measuring time is elapsed. The measurement stops
and the stabilization time starts (displayed in red).
•
Turn the microphone into the next test position, and then press shortly the
start/stop
button
after the desired stabilization time is elapsed. Now the measurement starts for the second
position.
•
Continue as above mentioned, until the measurements are carried out into all desired test
positions.
In the upper line of the table appear the instantaneous measuring values of the rate, amplitude and
beat error.
Subsequently the measuring time (black), the average values of the rate and amplitude are displayed
for each test position. The stabilization time is displayed between the test positions.
The measured amplitude values are also presented with a light blue bar.
Average and delta values of rate and amplitude as well as the total test time, date, time and the
ambient temperature are also indicated.
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16
ADDITIONAL TECHNICAL INFORMATION
16.1
Signal Sources for Rate Measurement
16.1.1
Operation of Rate Measurement
The signal transducer acquires a signal, the period of which depends on the rate deviation of the
watch. The magnetic stray field or the current pulses of the step motor, the capacitive stray field of
the LCD display, the electrical stray field or the mechanical oscillations of the quartz oscillator are
used, depending on the measuring mode.
The signal is amplified, filtered and digitalised. The signal period is measured with a highly accurate
reference time base. The difference between the period actually measured and the nominal period
for the zero deviation is converted into seconds per day (s/d) or seconds per month (s/m) and
displayed accordingly.
16.1.2
Magnetic Signal Source from the Motor
This test mode is used with all closed quartz watches with step motor.
Based on the magnetic signal, the instrument determines the rate deviation as well as the pulse
parameters
Period, Pulse Width
and
Drive Level.
Signal Acquisition
This test mode records the magnetic stray field of the motor coil.
The instrument recognizes the signals of analogue watches and selects itself the
Motor magn.
signal
source
.
The watch must be positioned on the signal transducer with the back downward. If the wristlet of
the watch is in the way, the watch can be positioned with the dial downward, causing however a
certain worsening of the signal quality.
If the signal is too weak, it is necessary to shift or rotate slightly the watch on the transducer to find
a better location for capturing the signal.
Measurement time
The measurement time for analogue watches must correspond to a pulse period of the stepping
motor or to a multiple thereof. Watches with inhibition compensation must be tested over an
inhibition period or a multiple thereof.
When the
Time
parameter is set to
Auto
, the correct measurement time is selected automatically.
The desired time can also be selected manually for special measurements.
16.1.3
Motor Current Signal Source
This test mode is used for quartz watches with a step motor that are supplied from the Analyzer
Twin.
Based on the current pulses, the instrument determines the rate deviation as well as the pulse
parameters
Period
,
Pulse Width
and
Drive Level
.
Signal Acquisition
This test mode records the electrical current pulses of the step motor.
The instrument selects itself the
Motor current
signal source as soon as a supply current is flowing.
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The
step. motor
LED blinks with every motor pulse and indicates the strength of the recorded
signal.
Measurement Time
The measurement time for analogue watches must correspond to a pulse period of the stepping
motor or to a multiple thereof. Watches with inhibition compensation must be tested over an
inhibition period or a multiple thereof.
When the
Time
parameter is set to
Auto
, the correct measurement time is selected automatically.
The desired time can also be selected manually for special measurements.
16.1.4
LCD Signal Source
This test mode is used with most LCD watches.
Signal Acquisition
The electrical stray field of the LCD display is used for the rate measurement of LCD watches. The
stray field is recorded capacitively. The instrument can only process binary frequencies (watches
with 32.768 kHz quartz frequency).
Caution
The LCD operating frequency cannot be measured through the supply current. The
LCD
signal source cannot therefore be used when the Analyzer Twin supplies the LCD
watch.
The instrument recognizes the signals from LCD displays and selects itself the correct signal source.
The watch must be positioned on the signal transducer
with the dial face downward
.
The
LCD display
LED indicates the strength of the recorded signal. If the signal is too weak, it is
necessary to shift or rotate slightly the watch on the transducer to find a better location for
capturing the signal.
Measuring the rate with the LCD frequency of certain LCD watches is difficult or impossible, since
the information for the rate measurement is not available in the operating frequency of the display.
Such watches can often be measured through the quartz frequency (see chapter 6).
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Measurement Time
LCD watches without inhibition compensation can be measured with the shortest measurement time
of 2 s. The measurement of watches with inhibition compensation must be performed during an
inhibition period or a multiple thereof.
When the
Time
parameter is set to
Auto
, the correct measurement time is selected automatically.
The desired time can also be selected manually for special measurements.
16.1.5
Quartz Signal Source
Watches with a 32 kHz quartz frequency and rate compensation of the oscillator (with chip capacitor
or trimmer) can be tested in this mode. Due to its short measurement time, this test method is
ideally suited for watches with oscillator compensation.
Caution
Due to the risk of faulty measurements in the case of inhibition-compensated
watches, this signal source is not selected automatically. It is necessary to select
manually the
Quartz
signal source with the
Signal
parameter to perform a rate
measurement through the quartz frequency.
Signal Acquisition
The mechanical quartz oscillations of watches in a metal case are acoustically recorded. The
electrical stray field from the quartz oscillator is capacitively recorded with watches enclosed in a
case of synthetic material or with open movements. The quartz frequency is derived from the supply
current if the Analyzer Twin is supplying the watch. The switching to the suitable signal recording
occurs automatically.
The watch must be positioned on the signal transducer with the back downward.
For acoustic signal recording (watches with metal case), the watch must be in
contact with the transducer stick
.
The
quartz 32kHz
LED indicates the strength of the recorded signal. If the signal is too weak, it is
necessary to shift slightly the watch on the transducer to find a better location for capturing the
signal.
Measurement Time
In automatic mode, the shortest measurement time of 2 s is selected. It is possible to select a longer
time manually.
16.2
Watches with Inhibition Compensation
In order to avoid faulty measurements, the watchmaker must know the particular characteristics of
watches with inhibition compensation. These characteristics are explained below.
The quartz frequency of watches with inhibition compensation is not compensated (no trimmer). The
oscillating circuit of the IC is designed in such a way that the quartz frequency is slightly too high
(0.5 to 10 s gain). The frequency divider suppresses a programmable number of pulses of the quartz
oscillation during an inhibition period, i.e. they are not forwarded to the next divider stage.
A watch with an inhibition period of 60 s is slightly fast during 59 s according to the quartz
frequency and, during the 1-second pulse inhibition, becomes markedly slow.
(There are also other correction systems able to correct the positive or negative deviations of the
quartz frequency).
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The programming of such watches is performed with a special pulse sequence sent through the
battery connections of the IC. In most cases, a readjustment by the watchmaker is not possible.
To obtain reliable measurement results, it is necessary to test such watches by
means of the stepping motor pulses and the measurement time must be an
inhibition period or a multiple thereof.
The usual inhibition periods are 60 s or 10 s. The inhibition period of some precision watches is
120 s; special watches may have even longer inhibition periods, up to 960 s. If the measurement
time of such a watch is too short, the result shows large regular fluctuations. With a measurement
based on the quartz frequency, the result shows a constant deviation (a gain in most cases) of 0.5 to
10 s/d.
When the
TIME
parameter is set to
Auto
, the Analyzer Twin recognises watches with inhibition
periods up to 120s and selects itself the correct measurement time.
The instrument first measures with the shortest possible measurement time. If the rate deviation
exceeds ± 0.5 s/d, the instrument “assumes” it is dealing with an inhibition compensation watch.
The measurement time is automatically set to 60 s, a value that matches most of the watches with
inhibition compensation. If a shorter or longer inhibition period is detected during measurement
(e.g. 10 s or 120 s), the measurement time is modified accordingly. The measured inhibition period
is displayed in the result window.
Some precision watches have an inhibition period exceeding 120 s or several inhibition periods.
Their autonomous recognition as inhibition watches often fails. If a watch with a measurement time
of 60s alternatively provides positive and negative results at regular time intervals, it is an inhibition
watch. Select the measurement time according to the time intervals determined.
16.3
Influence of the Temperature
The rate deviation of quartz watches strongly depends on the watch temperature. Quartz watches
are optimised for a temperature of 27°. If the temperature is lower or higher, the ensuing loss
strongly increases with larger temperature deviations.
It is therefore important to carry out measurements with the watch at the normal ambient
temperature. Comparative measurements must be carried out at the same temperature.
For that reason, the instrument displays the current ambient temperature that will also appear in the
measurement log printout.
The measurement accuracy of the Analyzer Twin is not influenced by fluctuations of the ambient
temperature.
16.4
Typical Values of the Rate Deviation
The compensation in inhibition-compensated watches is mostly performed in steps of 0.18 s/d (also
0.09 s/d or 0.36 s/d for some watches). The compensation is generally performed in such a way that
the rate deviation is as close to 0 as possible, but in the positive range.
A deviation due to the aging of the quartz and to the temperature is added to the initial deviation.
For quartz watches of medium quality, one should therefore expect a rate deviation between
-0.1 s/d and +0.3 s/d.
The manufacturer data are binding as regards the maximal acceptable deviations.
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16.5
Motor Pulse Analysis
16.5.1
Drive Level
Two kinds of motor pulses are used in analogue quartz watches.
a)
A fixed pulse, during which the battery voltage is applied to the motor coil for the entire
duration of the pulse.
b)
A chopping pulse, which switches the voltage of the motor coil on and off with a fixed
frequency (mostly 1 kHz) during the pulse duration.
The energy sent to the coil with chopping pulses can be varied by changing the ratio between switch-
on and switch-off duration (chopping level). The energy, and hence the consumption, can thus be
matched to the characteristics of the module.
The
Graph of the motor pulse
function displays the shape of the current pulse as an oscillogram.
16.5.2
Watches with Adaptive Motor Pulses (Asservissement)
A watch with adaptive motor pulses determines itself the minimal pulse energy necessary for its
reliable operation. The chopping level and sometimes also the pulse duration can be adapted in
several steps to the power requirements of the watch.
Such watches include an additional circuit that determines if the motor has performed a step. If the
step hasn’t been performed, a second motor pulse with the highest power level is sent (fixed pulse).
During operation, the power level is regularly lowered to the next lower level (e.g. every 4 minutes)
until the watch misses a step. The power level is raised again when a missing step is detected.
One sees that the chopping level, and therefore also the consumption, vary according to the power
requirements of the watch. The consumption increases in the case of shocks, of change of date, of
sinking battery voltage, but also of mechanical faults.
The Analyzer Twin allows for the first time to test the chopping level, hence the power level, of closed
watches.
Take into account the fact that it needs several minutes to the power level to return to the initial level
after a perturbation (e.g. shock, voltage variation).
16.5.3
Interpretation of the Oscillograms
Please note:
In the case of chopping pulses, the current behaviour is determined by the current
spikes of the individual chopping pulses.
-
If the watch functions correctly, the current rises continuously at the start of the pulse, reaches a
maximum, then decreases, to increase again at the end of the pulse.
-
If the watch is mechanically blocked, the current increases continuously to reach a maximal
value, where it remains until the pulse is over. If the watch is blocked, there is often a strong
asymmetry between positive and negative pulses, since every second pulse has the wrong
polarity.
-
A strong asymmetry between positive and negative pulses of a functioning watch points to a
problem with the step motor.
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Well-functioning watch with chopping pulses
Badly functioning watch with chopping pulses
Well-functioning watch without chopping pulses
Badly functioning watch without chopping
pulses
16.6
End Of Life (EOL) Function
Various watches are equipped with a display for the end of the battery life (End Of Life). The step
motor of these watches performs 4 steps every 4 seconds when the battery voltage falls below a
given value (typical 1.25 V). The correct operation of this display can be tested by decreasing the
voltage.
Keep in mind the fact that the EOL function does not react immediately to a voltage change. In most
cases, the module only tests the battery voltage once a minute.
16.7
Battery Testing
The voltage of watch batteries remains constant almost up to the very end of life and only falls
when the battery is completely exhausted. A test, even with a load, only shows whether the battery
can still be used or if it is completely exhausted. It is not possible to measure the remaining
capacity.
Connecting the battery to a load resistor shows if the necessary current can be supplied without an
excessive voltage drop.
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The
No Load
voltage is measured with a base load of 1 M
Ω
that approximately corresponds to the
load from the IC current.
The
Low Drain
voltage is tested for 10 ms with a 2 k
Ω
load resistor.
This corresponds to the load from
a step motor pulse.
The test of High Drain batteries (batteries for high peak currents) is performed with a 100
Ω
load
applied for one second. This load approximately corresponds to the lighting of a LCD watch or to the
alarm function of an alarm watch.
To avoid testing the battery with an excessive load, the
High Drain
test is not automatically carried
out; it must be activated manually by pressing the start button.
The sealing of the battery must also be checked when carrying out the test. If salt crystals have
grown at the joint between case and back cover, it is necessary to replace the battery, even if its
voltage is still high enough.
Typical values:
Silver oxide batteries
No Load
and
Low Drain
voltage
Good battery:
1.45 - 1.6 V
End of lifetime:
below
1.40 V
High Drain
voltage (only relevant for High Drain batteries)
Good battery:
higher than 1.25 V
End of lifetime:
below 1.20 V
Batteries for large watches (alkaline batteries)
High Drain
voltage
Good battery:
1.4 - 1.6 V
End of lifetime:
below 1.20 V
Lithium batteries
As there are several technologies and application classes of lithium batteries, it is impossible to make
general statements.
The following values can be considered as typical values:
No Load
and
Low Drain
voltage
Good battery:
2.9 – 3.2 V
End of lifetime:
below
2.8 V
17
SYSTEM PARAMETERS
You can tailor the measurement sequence and the display according to your requirements by
suitably setting system parameters.
17.1
Procedure
Select the
System parameters
function in the main menu, then the type you want to handle. You will
be presented with the suitable parameter field by pressing to confirm the selection.
You can select the different parameters with a rotation. You will be presented with the parameter by
pressing and you can then change its value. Press again to leave the parameter.
Select the
↓
arrow to leave the parameter field.
The setup possibilities are presented in the next chapters.
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17.2
TYPE General
TIME
You can set up and correct the time of the built-in clock. If the Witschi GPS receiver is connected,
you can only adjust the Hour (in accordance with the time zone). The GPS receiver automatically sets
and synchronises minutes and seconds.
DATE
You can adjust or correct the date.
FORMAT
Euro
European format for displaying the date (dd.mm.yyyy) and time (24 hours).
US
American format for displaying the date (yyyy.mm.dd) and time (AM-PM).
----
No date and time display.
Date and time appear in the lower result field and in the measurement log printout.
LANGUAGE
You can choose one of the following languages:
Deutsch
,
Français
and
English
.
TEMP.
The built-in sensor allows to measure the ambient temperature.
o
C
Temperature display in Celsius degrees.
o
F
Temperature display in Fahrenheit degrees.
----
No temperature display.
The ambient temperature appears in the lower result field and in the measurement log printout.
RATE
s/d
Display of rate results in seconds/24 hours
s/m
Display of rate results in seconds/month
GRAPHIC
ON
Miscellaneous measurement results are represented graphically in addition to the
numerical display.
OFF
Graphical display turned off.
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Page 35
MODE
Auto
Automatic selection of the main measurement functions as soon as an exploitable signal
is detected.
Manual
The automatic mode is turned off. All measurement functions must be selected manually.
CONTRAST
You can optimally adjust the contrast by steps from 1 to 20 according to the viewing angle or the
temperature.
LIGHT
When no measurement is running, the instrument switches to standby mode after the preset time
and the display lighting is switched off.
Preset values 15, 30, 60 min or continuous (Cont.).
BEEP – CLOCK
When this function is activated, a short beep sounds during the last five seconds of every minute.
This function can be used for setting a watch.
BEEP – TEST END
A beep sounds when this function is activated whenever a new result appears during a long
measurement time.
17.3
TYPE Interfaces PRINTER
TYPE
General
Data are sent without control code through a RS232 printer interface. If you
utilise the
Autoprint
software (available as an option) instead of the printer, you must
select this mode and set the baud rate (BAUD) of the interface to 38400.
Martel
Select this type if the thermal printer
Martel
(accessory) is connected.
Important
! Set the baud rate of the RS232 printer interface to 19200.
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Analyzer Twin
Witschi Electronic Ltd
START
Key
The measurement log printout is started manually by pressing the
print
key.
Auto
The measurement log printout is started automatically at the end of a measurement
cycle.
A graphical printout (
print screen
) is not possible with this setting.
DATE
ON
Date and time are printed in the measurement log.
OFF
Date and time are not printed.
HEADER
ON
The header is printed in the measurement log.
OFF
The header is not printed
HEADER
The device as delivered displays the following text:
Witschi Electronic AG
ANALYZER TWIN
You can edit without restriction the two 22-character lines according to your requirements and
replace them with your own information. Procedure:
•
Use the rotary knob to select the line to edit. The line is underlined in blue.
•
Then press the rotary knob. The cursor is now located on the first character of the line
underlined in blue. You can select any alphanumeric character (including a space) by turning.
•
To select the next character, press again the rotary knob; the cursor jumps to the next
character.
To leave the edit mode, press the rotary knob several times until the last character has been
reached.
PORT
PC
ON
The USB port is activated. The suitable baud rate is set by the installed PC software.
OFF
The USB port is deactivated; data exchange with the PC is disabled.
PRINTER
ON
The RS232 printer interface is activated.
OFF
The interface is deactivated; data are not sent to the printer.
GPS RTC
ON
If the Witschi GPS receiver (available as an accessory) is connected, the minutes and
seconds of the watch are automatically synchronised.
OFF
The real time clock (
R
eal
T
ime
C
lock) is not synchronised.
Witschi Electronic Ltd
Analyzer Twin
Page 37
GPS SYNC
ON
If the Witschi GPS receiver (available as an accessory) is connected, it continuously
synchronises the time base of the instrument, thus offering the highest possible accuracy.
OFF
The time base synchronisation is turned off.
17.4
TYPE Info
This page contains product information such as the serial number of the instrument as well as of the
hardware and firmware versions.
The information can only modified by the Witschi customer service when hardware or firmware
updates have been carried out. The access is only granted with a password.
18
CONNECTION TO A PC
18.1
Field of Application
The
Autoprint
PC software, available as an accessory, provides the mean to transfer the
measurement results as a text file or the whole contents of the screen as a bit map file to a PC, to be
saved and/or printed (if a printer is connected to the PC). The files can also be placed into the
clipboard of the PC from which they can be inserted into a document.
18.2
Installation
Switch off the Analyzer Twin and the PC before interconnecting them. Connect the RS232
printer
interface of the instrument with the 9-pin link cable to the COM1 or COM2 port of the PC.
The installation and operating instructions are available in the Autoprint Instruction Manual.
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Analyzer Twin
Witschi Electronic Ltd
19
MAINTENANCE
Analyzer Twin does not require any special maintenance.
Only use a soft cloth to remove the dirt; do not use aggressive detergents or solvents. Clean the LCD
display with a slightly moistened cloth.
Protect the instrument with its specific dust-proof cover when it is not used.
Disconnect the power supply during longer idle periods (e.g. vacations).
To keep measurements accurate, we recommend contacting our customer service in order to have
your instrument calibrated and its functionality checked yearly.
The date of the last calibration appears on the display when switching on the instrument.
Do not hesitate to contact customer service at our headquarters or one of our agencies if you require
more information.
20
TECHNICAL DATA
20.1
Measurement Functions
Rate Measurement
•
Measurement based on the quartz frequency; signal acquisition acoustic, capacitive or through
the supply current.
•
Measurement based on motor pulses; signal acquisition magnetic or through the supply
current.
•
Measurement based on the LCD operating frequency (binary display frequencies).
Signal sources:
motor, quartz 32 kHz, LCD.
Automatic switching between magnetic motor pulses and current pulses.
Automatic switching between acoustic / capacitive quartz frequency and quartz
frequency through current.
Measurement time:
Automatic determination based on a motor period or an inhibition period, min.
2 s, max. 120 s. Alternatively, manual entry.
Values: 2, 4, 10, 12, 20, 60, 120, 240, 480, 960 s.
Automatic recognition of watches with inhibition compensation (deviation of the
quartz frequency > +/-0.5 s).
Result Display:
Measurement range ±327 s/24h, resolution 0.01 s/24h.
Accuracy:
0.1% of measurement value +/- 0.03 s/24h (with annual calibration).
With GPS synchronisation (option): 0.1% of measurement value +/- 0.001 s/24h
Graphical display:
Display range -1 s to +10 s, logarithmic scale.
Display of the instantaneous value independent of the measurement time
selected.
In the case of watches with inhibition compensation, simultaneous display of the
uncorrected quartz deviation.
Status displays:
Countdown of the remaining measurement time.
Information
No signal, Control, Run, Unstable, Out of range
according to the
measurement status.
Witschi Electronic Ltd
Analyzer Twin
Page 39
Pulse analysis
(with analogue watches)
Result display:
Pulse period of the stepping motor.
Inhibition period.
Pulse Width.
Drive Level
End Of Life (EOL) operating mode
Graphical display:
Drive Level
Measurement of Mechanical Watches
(standard function)
Beat numbers:
Automatic determination of the beat number: 12’000, 14’400, 18’000, 19’800,
21’600, 25’200, 28’800, 32’400, 36’000 and 43’200.
Measurement time:
Values: 2, 4, 8, 10, 20, 60, 120, 240, 480 and 960 seconds.
Result display:
Measurement range ±300 s/24h, resolution 0.1 s/24h.
Graphical display:
Display range rate measurement:
Amplitude:
Measurement range 80° to 360°. Lift angle adjustable from 10° to 90°.
Module supply
Contact with the watch by means of movable probes or with measurement cables and probe tips.
Mirror for watching the hands during measurement.
Supply voltage:
Adjustable, 0 - 3.5 V, resolution 0.05 V, accuracy ± 1% of measured value +/-
0.02 V.
Current limitation:
30 mA.
Current measurement
Instantaneous measurement of the IC current.
Integrating measurement of the total current during a measurement period.
Measurement time:
Automatic determination based on a motor period, min. 2 s, max. 30 s.
Alternatively, manual entry according to the rate measurement.
Result display:
Total current, IC current.
Measurement range 20 mA, resolution 1 nA.
Accuracy:
+/- 2% of measurement value +/- 2 nA
Graphical display:
Instantaneous current value during a measurement time of 2 s (independent of
the measurement time selected).
Display range 20 μA, logarithmic scale.
Fault displays: Acoustic signal and “out of measurement range” display when the current >20 mA.
Trace
Long-range recording as a diagram of the rate and current results.
Time scale:
Automatic according to the measurement period selected; one point per
measurement, recording length 240 points.
Corresponds to a recording length of 8 min to 60 h.
Value scale:
Rate -1 to +10 s, logarithmic scale.
Current 20 μA, logarithmic scale.
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Analyzer Twin
Witschi Electronic Ltd
Otherwise, the parameters for rate/current measurement apply.
Battery
Measurement of the measurement voltage with 2 M
Ω
load resistor (No Load) and 2 k
Ω
pulse-like
load during 10 ms (Low Drain).
Additional measurement by pressing the start key with 100
Ω
load resistor for 1 s (High Drain).
Result display:
Voltage: No Load, Low Drain, High Drain.
Measurement range: 0 - 3.5 V, 10 mV resolution.
Accuracy: 0.5% of measured value ± 10 mV.
Graphical display:
No Load voltage, display range 3.4 V.
Fault display: Polarity and acoustic signal in case of wrong polarity.
“Out of measurement range” and acoustic signal if the measurement range is
exceeded.
Resistance
Measurement of the coil resistance as well as detection of short-circuit and break.
Measurement range:
5
Ω
– 10 M
Ω
, 3-digit display with automatic range switching
Accuracy: 2 % of measured value ± 5
Ω
.
Measurement voltage:
max. 0.3 V.
Fault displays: “Short” and acoustic signal when R<10
Ω
.
Motor pulse analysis
Oscillogram of current pulses.
Positive and negative pulses are displayed alternatively.
Time scale:
Can be switched 8 / 16 ms
Current scale:
1 mA range, logarithmic.
Numerical display:
Pulse Width and Drive Level.
Pulse generator
Step motor supply with programmable pulses.
Test of acoustic signal transmitters (Buzzer).
Bipolar motor pulses (the selected pulse shape is displayed as an oscillogram).
Pulse width:
Programmable 2.94 - 31.25 ms in steps of 0.49 resp. 0.98 ms.
Repetition frequency:
Programmable 1, 2, 4, 8, 16, 32 Hz.
Chopping level (drive level): Programmable, 37.5 – 100 % in steps of 6.25 %.
Fixed chopping frequency:
1024 Hz.
Voltage:
Programmable from 0 to 3.5 V.
Buzzer test:
Bipolar square wave signal, frequency 2 kHz.
Programmable voltage from 0 to 3.5 V.
Witschi Electronic Ltd
Analyzer Twin
Page 41
20.2
Additional Functions
Help
Information about the selected function that can be accessed directly from the measurement.
Parameters:
Information about the choice of parameters.
Results:
Information pertaining to the interpretation of results.
Clock
Date and time are displayed in the result field and printed in the measurement log.
An acoustic minute signal (for timing watches) can be turned on and off in the setup.
Temperature measurement
The temperature is displayed in the result field and can be printed in the measurement log.
20.3
Options
Result Printout, Data Transfer to a PC
A printer to produce a hard copy of the measurement results is available as an option.
The results can also be transferred to a PC for additional processing; a software program for viewing
and archiving the results is available as an option.
Data are simultaneously transferred to the printer and PC interfaces.
Pressing the Print key causes the numerical results to be printed. In addition, the date and time, the
temperature and a customisable title can be included in the printout (to be selected in the Setup).
A longer pressure on the Print key causes the current display to be graphically printed.
Measurements can be continuously (whenever a new result is available) transferred (to be selected in
the setup).
GPS Synchronisation
A GPS receiver, available as an option, synchronises the internal time base with the highly accurate
GPS time signal.
When the instrument is synchronised with the GPS, the internal clock is also compared at regular
intervals with the GPS clock and corrected if necessary.
20.4
General Data
Time base
Pre-aged quartz time base stabilised in temperature.
Temperature stability:
10° - 40°
± 0.004 s/24h.
Aging after one year:
less than ± 0.03 s/24h.
Optional synchronisation with GPS receiver (option)
Accuracy:
± 0.001 s/24h.
No influence on accuracy from aging or temperature.
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Analyzer Twin
Witschi Electronic Ltd
Display
TFT colour graphic screen ¼ VGA (320 x 240 dots), LED lighting.
The display can be tilted at an optimal viewing angle.
Working temperature
10° to 40°C.
Power supply
Plug-in power supply:
9 V~, 1.2 A.
Mains voltage:
230 V~ (210-240 V~), 115 V~ option (105 - 120 V~).
Power consumption:
< 11 W.
Standby:
< 7 W.
Dimensions
Width:
290 mm.
Height:
70 mm with folded display, 170 mm with swung-out display.
Depth:
170 mm (without plug).
Weight:
3.8 kg incl. stand microphone and mains adapter.
DECLARATION OF CONFORMITY
The equipment is in conformity with the following EC-Directives:
89/336/EWG
CEM
Emissions
EN 55022
Conduction
EN 55022
Radiation
EN 60555-2
Harmonics
EN 60555-3
Flicker
Immunity
IEC 1000-4-2
ESD
IEC 1000-4-3
HF
IEC 1000-4-4
Burst
IEC 1000-4-5
Surge
IEC 1000-4-6
Cond. Immunity
IEC 1000-4-8
50Hz Magn. Puls
IEC 1000-4-11
Dips
Witschi Electronic Ltd
Analyzer Twin
Page 43
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Analyzer Twin
Witschi Electronic Ltd
21
ACCESSORIES
•
Witschi thermo printer, either for 230 V~ or 120 V~
Item No. JB01-MCP7810
•
Thermal paper: roll for Martell printer
Item No. JA01-MM58-DPU20-N
•
Witschi GPS receiver, allowing synchronisation of time base
Item No. 19.91PK1
and real time clock.
•
Autoprint: PC software for data transfer
Item No. 64.55.901PK1
incl. link cable JB03-11.01.9018.