NEW TECH HANDY II
INSTRUCTION MANUAL
Document Nr. 33.11D35e
Rel. 1.0
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
welcome@witschi.com
TABLE OF CONTENTS
1
GETTING STARTED.
...............................................................................................
4
1.1
Recycling.
........................................................................................................................
4
1.2
Description.
.....................................................................................................................
5
2
OPERATING ELEMENTS AND INDICATORS.
.........................................................
6
2.1
Front panel.
.....................................................................................................................
6
2.2
Rear Panel.
......................................................................................................................
8
3
INSTALLATION.
.....................................................................................................
9
3.1
Mains supply.
..................................................................................................................
9
3.2
Printer connection.
..........................................................................................................
9
4
SET INTO OPERATION .
.........................................................................................
9
4.1
Switching on the instrument.
........................................................................................
10
4.2
Display Mode of the rate measurement.
.......................................................................
11
4.3
Selection of the TEST MODE .
........................................................................................
11
5
RATE MEASUREMENT.
........................................................................................
11
5.1
General .
........................................................................................................................
11
5.1.1
Principle of operation .
.......................................................................................................
11
5.1.2
Measurement procedure.
...................................................................................................
12
5.1.3
Temperature effects.
..........................................................................................................
12
5.1.4
Testing of watches with digital trimming (Inhibition) .
.......................................................
12
5.2
Signal sensing Motor .
...................................................................................................
13
5.2.1
Application .
.......................................................................................................................
13
5.2.2
Procedure .
.........................................................................................................................
14
5.2.3
Measuring time .
................................................................................................................
14
5.2.4
Results.
..............................................................................................................................
15
5.3
Signal sensing LCD.
.......................................................................................................
15
5.3.1
Application .
.......................................................................................................................
15
5.3.2
Procedure .
.........................................................................................................................
16
5.3.3
Measuring time .
................................................................................................................
16
5.3.4
Results.
..............................................................................................................................
17
5.4
Signal sensing 32kHz .
...................................................................................................
17
5.4.1
Procedure .
.........................................................................................................................
18
5.4.2
Acoustical signal sensing.
..................................................................................................
18
5.4.3
Capacitive signal sensing.
..................................................................................................
18
5.4.4
Signal detection via the supply current.
.............................................................................
18
5.4.5
Results.
..............................................................................................................................
19
5.5
Signal sensing Mechanical.
...........................................................................................
20
5.5.1
Application .
.......................................................................................................................
20
5.5.2
Procedure .
.........................................................................................................................
20
5.5.3
Sensor.
...............................................................................................................................
20
5.5.4
Measuring time .
................................................................................................................
20
5.5.5
Results.
..............................................................................................................................
21
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Page 3
6
CONSUMPTION MEASUREMENT.
........................................................................
21
6.1
General information .
.....................................................................................................
21
6.2
Procedure .
.....................................................................................................................
22
6.2.1
Selecting the supply voltage .
............................................................................................
22
6.2.2
Measuring time.
................................................................................................................
22
6.2.3
Contacting the watch .
......................................................................................................
23
6.2.4
Measurement results .
.......................................................................................................
24
6.2.5
Reset and acceleration functions of the watch .
................................................................
24
6.2.6
Test with reduced voltage.
................................................................................................
24
7
BATTERY TEST .
....................................................................................................
25
7.1
General information .
.....................................................................................................
25
7.2
Procedure .
.....................................................................................................................
25
7.2.1
Battery contacts.
...............................................................................................................
25
7.2.2
Results.
.............................................................................................................................
26
7.2.3
Normal battery voltages .
..................................................................................................
27
8
RESISTANCE MEASUREMENT .
............................................................................
27
8.1
General Information.
.....................................................................................................
27
8.2
Coil Test .
.......................................................................................................................
28
8.2.1
Coil resistance .
.................................................................................................................
28
8.2.2
Test of the coil insulation.
.................................................................................................
28
9
PROTOCOL OF THE TEST RESULTS.
.....................................................................
29
10
TROUBLE SHOOTING ON QUARTZ WATCHES.
....................................................
29
10.1
Systematic trouble shooting.
.........................................................................................
29
10.2
Battery.
..........................................................................................................................
30
10.3
IC defects .
.....................................................................................................................
30
10.4
Mechanical defects.
.......................................................................................................
30
10.5
Liquid Crystal Display (LCD) .
.........................................................................................
31
11
MAINTENANCE AND CUSTOMER SERVICE.
........................................................
31
11.1
Guarantee .
....................................................................................................................
31
11.2
Maintenance .
................................................................................................................
31
11.3
Calibration.
....................................................................................................................
32
12
TECHNICAL DATA .
...............................................................................................
32
13
ACCESSORIES .
.....................................................................................................
34
13.1
Delivery .
........................................................................................................................
34
13.2
Optional accessories.
.....................................................................................................
34
Page 4
Witschi Electronic Ltd
1
GETTING STARTED
Please carefully read all the information given in this User’s Guide. It
provides you with important instructions about the use, safety and
maintenance of your instrument.
Keep this manual in a safe place and if the occasion should
arise, pass it on to subsequent users.
The instrument may be used only for the designed purpose in accordance
with these Operating Instructions.
THE MANUFACTURER,
Witschi Electronic Ltd. in
CH – 3294 BÜREN a.A., SWITZERLAND,
ACCEPTS ABSOLUTELY NO RESPONSIBILITY FOR POSSIBLE DAMAGE
TO
THE
TEST
INSTRUMENT, TO WATCHES
OR
PERSONS
WHICH RESULTS
FROM
IMPROPER
OPERATION!
1.1
Recycling
Disposal of the Instrument: This electronic instrument should not be disposed of as household
refuse. If it is not accepted by public collecting points, kindly bring it back to the sales outlet. It will
provide suitable disposal according to legal directives. Your equipment suppliers in the EU will take
back free of charge all instruments manufactured after the 13.8.2005, as well as an older instrument
provided an equivalent new instrument is purchased.
Witschi Electronic Ltd
Page 5
Congratulations!
You made the right choice.
You bought NEW TECH HANDY II, 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.
1.2
Description
For the use in after sale service centers, the watchmaker needs test equipment, which allows
carrying out all electrical test and measurements in a simple way.
The NEW TECH HANDY II offers all test measurement functions required for a skilled service
diagnosis of quartz watches.
The functional layout of operating elements and the logical display of results and parameters
greatly simplify the use of the equipment. The measurement process, largely automated, and the
warning tone signaling a wrong operation make this tester very easy to be used by the operator.
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Witschi Electronic Ltd
2
OPERATING ELEMENTS AND INDICATORS
2.1
Front panel
In order to simplify the operation, all related indicators and operating elements have been grouped
on the front panel.
Signal
The detected signal level is indicated in this field by means of LED’s.
32kHz
Signal level of the 32 kHz quartz signal (acoustical, capacitive or over the
supply current).
motor
Signal level of the motor pulses, inductive signal sensing or over the supply
current.
LCD
Signal level of the LCD signal (capacitive).
mech
.
Signal level of the beat noise of mechanical watches.
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DISPLAY
Following results and parameters are displayed on the LCD backlight
display:
RATE
Indicates the result of the rate measurement (in s/d or s/month).
PERIOD
Indicates the motor pulse period.
TIME
Indicates the remaining measuring time (countdown).
CONSUMPTION
Indicates the IC and total current consumption.
SIG.SOURCE
Indicates the selected signal sensor.
MEAS.TIME
Indicates the selected measuring time.
SUPPLY VOLT
.
Indicates the selected supply voltage.
TEST MODE
Indicates the selected test mode.
KEYS
O / I
To switch the instrument on and off.
start
To start a new measurement sequence.
print
To print out the results (printer optional).
SIG.SOURCE
To select the signal sensor.
MEAS.TIME
To select the measuring time.
SUPPLY VOLT.
To select the supply voltage.
TEST MODE
To select the test mode.
SIGNAL SENSORS
motor
Signal sensor
for magnetical
LCD / 32kHz
and capacitive signals.
mech. / 32kHz
Signal sensor for acoustical signals
CONNECTIONS
+
SUPPLY -–
Connections for direct supply of modules or watch movements via two
mobile probes.
battery
Battery support for the battery test.
Remark
:
The functions performed by the keys
SIG.SOURCE,
MEAS.TIME
and
SUPPLY
VOLT.
change according on the test mode.
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Witschi Electronic Ltd
2.2
Rear Panel
1
and
2
Holders for storing the probe tips with measuring leads.
CONNECTIONS
supply
connection socket for the black measuring lead with probe tip.
supply
+
+
connection socket for the red measuring lead with probe tip.
printer
output
connector for the printer.
power 9.0 VAC
connector for the mains adapter unit.
Witschi Electronic Ltd
Page 9
3
INSTALLATION
3.1
Mains supply
The NEW TECH HANDY II is powered from a mains adapter unit with an output of 9 V ~ and a
rating of 1.2 A. The adapter is available for mains voltage of 230 V~ (range 210V~ to 240 V~) or
120 V~ (range 110 V~
to 130 V~).
B
EFORE CONNECTING THE INSTRUMENT FOR THE FIRST TIME
,
CHECK THAT THE
MAINS ADAPTER UNIT VOLTAGE CORRESPONDS TO YOUR MAINS SUPPLY
VOLTAGE
.
Use only the original Witschi mains adapter unit.
Connect the mains adapter unit to the power supply socket on the rear
panel of the instrument.
If the instrument will not be used for a longer period of time (e.g. during holidays) we recommend
to unplug the adapter from the mains supply.
3.2
Printer connection
Before connecting the printer (available as an option), remove the protection from the connector
"
printer output
. The appropriate interconnection cable is supplied with the printer.
WARNING !
Before connecting the printer to the mains, check that the printer voltage
corresponds to that of your mains supply (refer to the printer's manual).
4
SET INTO OPERATION
Caution:
Signal detection may be influenced by stray electrical and magnetic fields from other
electrical equipment. Particularly intense interference is caused by computers,
fluorescent lights and ultrasonic cleaning equipment. The NEW TECH HANDY II is
should therefore be set up at a sufficient distance from any such equipment. Paging
installations may also interfere with signal detection. The equipment may be
disturbed due to electromagnetic perturbing radiation.
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Witschi Electronic Ltd
4.1
Switching on the instrument
Switch the main switch to
O
. The following message is displayed for approximately 4 seconds:
*
x.x = Software version number
and subsequently
In the top right of the display, the countdown (down counter) begins to run starting at 30 seconds.
The internal, oven controlled quartz crystal time base requires 30 seconds each time the instrument
is switched on to reach the operating temperature and hence to guarantee the accuracy of the rate
measurement.
The running countdown can be interrupted by pressing any key. The rate measurement will be
inaccurate during the first 90 seconds.
Witschi Electronic Ltd
Page 11
4.2
Display Mode of the rate measurement
You can change over the display mode in s/day or s/month. When switching the instrument on,
keep the
SIG. SOURCE
key pressed until the following is displayed:
*
*
*
Press the
TEST MODE
key to select the desired rate measurement display:
s/
d (seconds/day) or
s/month (seconds/month).
4.3
Selection of the TEST MODE
The following test modes can be selected by pressing the
TEST MODE
key:
Consum
Normal test mode for rate and consumption measurements. If a watch is not
supplied from the instrument, the signal sensors for the rate measurements
are
active. If a watch is being supplied from the instrument, the rate measurement is
done over the supply current. This test mode is selected automatically when the
instrument is switched on.
Resist
In this test mode the coil resistance and insulation can be measured.
Batt
.
In this test mode you can check the various types of batteries.
5
RATE MEASUREMENT
5.1
General
5.1.1
Principle of operation
The signal sensor detects a signal, the period of which is dependent of the rate deviation of the
watch. Depending on the test mode, this can be the quartz crystal oscillator frequency, the
operating frequency of the LCD or the pulse period of the stepping motor.
The received signal is amplified, filtered and digitized. The digitized signal is subdivided until the
length of its period is approximately equal to the selected measuring time.
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Witschi Electronic Ltd
The period of the subdivided signal is measured using a highly accurate time base as reference. The
difference between the measured period and the reference period for zero deviation is converted
into seconds/day or seconds/month and displayed.
5.1.2
Measurement procedure
Use the
SIG.SOURCE
key to select the appropriate signal source for the watch to be tested.
Place the watch on the adequate sensor and, if necessary, move or rotate it until the respective LED
in the
Signal
field lights brightly or flashes in time with the watch pulses.
The measurement starts automatically as soon as a watch signal is detected. The result is displayed
at the end of the measurement period. The measuring procedure continues as long as there is a
detectable signal with the result being updated at the end of each measurement period. With long
measuring periods, a short warning beep indicates the end of the measuring cycle.
A currently running test sequence can be interrupted and a new cycle begun at any time by pressing
the
start
key.
The first measurement often provides an incorrect result because the watch was still being moved
at the start of the measuring process. In the case of long measuring times, it is recommended that
the measuring procedure is restarted once the watch has been properly positioned on the sensor. In
this way the first measurement already provides a correct result.
If the result is outside the measurement range,
Overflow
is displayed.
If the watch signal is disturbed to such an extent that that it cannot be evaluated,
Unstable
is
displayed.
5.1.3
Temperature effects
The rate deviation of a quartz crystal watch largely depends on the ambient temperature. It is
therefore important that rate accuracy measurements are executed at room temperature or at the
normal working temperature on the wrist. In particular, comparative measurements must always be
carried out at the same ambient temperature.
5.1.4
Testing of watches with digital trimming (Inhibition)
Erroneous measurements may occur when watches with digital trimming are tested, if the
watchmaker is not familiar with their special characteristics which are explained below.
For watches with digital trimming, the quartz crystal oscillator frequency is not adjustable (no
trimmer).
The value of a fixed capacitor within the IC itself is selected such that the oscillator frequency for all
quartz crystals is slightly too high. A programmable number of oscillator pulses is inhibited once per
minute (or, in the case of some watches, every 10, 20 or 30 s or 4 or 8 minutes) during frequency
division, i.e., they are not transferred to the next divider stage.
Witschi Electronic Ltd
Page 13
The watch therefore runs slightly fast for 59 seconds as determined by the oscillator frequency, and
extremely slowly during the second when the pulses are inhibited. The number of pulses that are
inhibited is programmed so that the mean deviation is 0. As only a whole number of pulses can be
inhibited, the adjustment is not continuous; it is usually made in steps of 0.18 or 0.36 s/d.
The programming of such watches is carried out by either selectively cutting traces on the printed
circuit board of the watch or by a special pulse sequence applied to the battery connections of the
IC. In most cases it is not possible for the watchmaker to make subsequent adjustments.
If such a watch is measured by means of the quartz crystal oscillator frequency, the result obtained
constantly shows a tendency for the watch to be fast (normally between approx. 1 to 10 s/d).
If the watch is measured over a period of 2 seconds on the basis of the motor pulses or the LCD
frequency, every 30th measurement would show a result that is extremely slow. The results of the
rest of the measurements would be fast since they correspond to the oscillator frequency.
In order to obtain a correct result, such watches have to be measured by means of
the stepping motor pulses. In this case, the measuring time has to be equivalent to
an inhibition period or a multiple of it, that is, it has to be set to 10, 20, 30, or 60 s, 4
minutes or 8 minutes depending on the inhibition period.
If
Aut
is selected, the
instrument switches automatically to a measuring time of 60 s if the rate deviation is greater than +
1 s/d.
5.2
Signal sensing Motor
In this mode, the stray magnetic field of the motor coil is sensed. The signal can also be detected
from the supply current. This signal source is automatically selected when the instrument is
switched on.
5.2.1
Application
This signal may be used for all watches with a stepping motor. It must be used for watches which
can not be measured
using the oscillator frequency, for example, watches with a special quartz
crystal frequency, watches with digital trimming or watches where no stable result can be achieved
in the
32kHz
test mode.
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Witschi Electronic Ltd
Note:
Practically any analogue watch can be tested with the
motor
signal source with
measuring time
Aut
(automatic), irrespective of the quartz crystal frequency, the
stepping period or the rate trimming principle. This setting may be universally used.
5.2.2
Procedure
Using the
TEST MODE
key, select the mode
Consum
and with the key
SIG.SOURCE
the signal
source
Motor.
*
*
*
To carry out the check, place the watch on the magnetic
sensor
motor
. The
motor
LED flashes with each motor
pulse and indicates the strength of the detected signal. If
the signal is too weak, move the watch on the sensor. The
signal can also be detected via the power supply (see page
18, chapter 5.4.3).
5.2.3
Measuring time
The measuring time must always be equivalent to the
stepping period or a multiple of it. Watches with digital
trimming (inhibition) have to be measured over an
inhibition period or a multiple of it. The initial setting
Aut
(automatic) is suitable for watches both with and without
digital trimming.
Automatic measuring time
When the automatic measuring time
Aut
has been selected, the result is displayed at the end of a
motor pulse period, or as a minimum after 2 seconds. If the rate deviation is greater than 1 s/day
the instrument assumes that it is a watch with digital trimming and automatically switches to a
measuring time of 60 seconds.
Manual measuring time
Using the key
MEAS.TIME
,
the following measuring time can be selected: 2, 4, 10, 20, 30, 60, 120,
240 and 480 seconds or
Aut.
motor
LCD / 32kHz
Witschi Electronic Ltd
Page 15
After each completion of a measuring cycle which is 10 sec. or more, a short beep sounds. The
measurement is continuos, it restarts automatically after each test cycle. It can be restarted by
pressing the
start
key.
5.2.4
Results
After completion of the measuring cycle, the results are displayed in the appropriate fields.
RATE
Display of the rate accuracy in seconds per day or seconds per month.
PERIOD
Length of the motor pulse period (P01 = 1 s). The
I
after P01 indicates that a
watch with digital trimming is being tested and the instrument has
automatically selected a measuring time of 60 s.
TIME
The remaining measuring time.
CONSUMPTION
Additionally the current consumption when the watch is powered by the
instrument, otherwise
>Open<
5.3
Signal sensing LCD
In the
LCD
mode, the operating frequency of the LCD of a watch is evaluated for the measurement.
Any frequency which is a multiple 4 Hz can be processed.
5.3.1
Application
This mode is used for LCD watches which cannot be tested by means of the quartz crystal oscillator
frequency, for example watches that run at a special frequency (such as stop watches and
calculators with a watch function) or watches with digital trimming.
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Witschi Electronic Ltd
5.3.2
Procedure
Using the
TEST MODE
key, select the mode
Consum
and with the key
SIG.SOURCE
the signal
source
LCD
.
*
*
*
Place the watch to be tested face
downward
on the
capacitive sensor
LCD / 32kHz
The
LCD
Led indicates the strength of the detected
signal. If the signal is weak, move the watch on the
sensor until a better position is found for detecting the
signal.
5.3.3
Measuring time
The initial setting
Aut
(automatic) is suitable for
watches both with and without digital trimming.
Automatic measuring time
When the automatic measuring time
Aut
has been
selected, the result is displayed after 2 s. If the rate
deviation is greater than 1 s/d the instrument assumes that it is a watch with digital trimming and
automatically switches to a measuring time of 60 s.
Manual measuring time
The key
MEAS.TIME
can be used to select the following measuring times: 2, 4, 10, 20, 30, 60, 120,
240 and 480 seconds or
Aut
After each elapsed measuring cycle which duration is 10 s or more, a short beep sounds. The
measurement is continuos; it restarts automatically after each test cycle. It can be restarted by
pressing the
start
key.
motor
LCD / 32kHz
Witschi Electronic Ltd
Page 17
5.3.4
Results
After completion of the measuring cycle, the results are displayed in the appropriate fields.
RATE
Display of the rate accuracy.
PERIOD
The
I
in the field
PERIOD
means that a watch with digital adjustment is
being tested and the instrument has automatically selected a measuring time
of 60 s.
TIME
The remaining measuring time.
The indications in the other fields are not relevant for the test mode.
5.4
Signal sensing 32kHz
In the
32kHz
mode, the mechanical or electrical oscillations of the quartz crystal oscillator are
detected directly. In this test mode, both the acoustic and capacitive sensors are active. Signal
detection can also take place via the supply current. The measuring time is 1 second and cannot be
changed.
Application
This test mode can be used to test all watches with a 32 kHz quartz crystal frequency and rate
adjustment by the oscillator, practically all watches with trimmer. Due to the short measuring time,
this test mode is ideal for trimmer adjustment.
In the 32 kHz test mode, watches with
digital trimming indicate an incorrect result (too fast).
Page 18
Witschi Electronic Ltd
5.4.1
Procedure
Using the
SIG.SOURCE
key select the signal source
32kHz.
*
5.4.2 Acoustical signal sensing
This sensor is used primarily for watches with a closed
metal case but it can also be used for open modules.
To check the watch, place it on the acoustic sensor
mech
.
/
32kHz
. The watch must touch the sensor pin in the
center of the sensor.
The
32 KHz
LED indicates the level of the signal. If the
signal is too weak, move the watch slightly on the sensor
until a better position is found for detecting the signal.
5.4.3
Capacitive signal sensing
In this mode, the capacitive
LCD / 32 kHz
sensor can also be used for detecting the signal.
It is
only
suitable for
open watch modules or watches with a plastic case. The
32kHz
LED indicates
the strength of the detected signal. If the signal is too weak, move the watch slightly on the sensor
until a better position is found for detecting the signal.
5.4.4
Signal detection via the supply current
When in this mode the watch is powered from the instrument, the quartz crystal frequency is
filtered out of the supply current. The measurement can be somewhat unstable due to the many
interfering signals in the supply current. In this case, a measurement using the motor pulse current
will provide a more stable result
Warning:
When a watch is being tested on the acoustic or capacitive sensor, no other watch
may be simultaneously supplied with power from the instrument.
mech. / 32kHz
Witschi Electronic Ltd
Page 19
5.4.5
Results
For acoustical or capacitive signal sensing:
RATE
Display of the rate accuracy, continuously every second.
For the signal sensing over the supply current:
RATE
Display of the rate accuracy, continuously every second.
CONSUMPTION
Display of the IC consumption after 1 s and the total consumption after one
motor pulse period, but not before 5 s.
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Witschi Electronic Ltd
5.5
Signal sensing Mechanical
5.5.1
Application
The
NEW TECH HANDY
can be used for testing mechanical watches with 18’000, 19’800, 21’600,
28’800 and 36’000 beats per hour. The instrument is ideally suited for the rapid testing of
mechanical watches.
5.5.2
Procedure
Use the
SIG.SOURCE
key to select the
Mech.
signal source.
*
5.5.3
Sensor
To test the watch, place it on the acoustic sensor. The
body of the watch must touch the sensor pin. The
mech.
LED indicates the strength of the detected
signal.
5.5.4
Measuring time
The measuring time is 8 seconds and cannot be
changed.
mech. / 32kHz
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Page 21
5.5.5
Results
After completion of the measuring cycle, the results are displayed in the appropriate fields.
RATE
Display of the rate accuracy in s/d.
TIME
Indication of the running measuring time.
6
CONSUMPTION MEASUREMENT
6.1
General information
The current consumption of a watch provides information about the expected life of the battery and
is an important quality criterion for quartz crystal watches.
In the case of analogue quartz crystal watches, the current is a combination of the IC current in the
range of 100 to 300 nA and the current peak during motor pulses of up to 1 mA.
The NEW TECH HANDY registers the entire current by summing all portions of the current flow
throughout the measuring time (integrating measurement). The result of this measurement provides
the mean value of the entire current consumption (IC current and motor current) throughout the
measuring time.
After the start of the measuring cycle, the IC current is displayed for 5 s (even if the motor pulse
period is 1 s).
Refer to the manufacturers data for the maximum permissible current consumption of a watch.
A general rule is: The smaller the battery, the lower the current consumption of the watch should
be. The typical current consumption of modern quartz crystal watches is between 1 and 2
μ
A for
analogue watches with 1 s/step and 0.5 up to 1.0
μ
A for watches with longer stepping periods.
In this test mode the current consumption of all types of quartz crystal can be measured. It is also
possible to carry out a rate measurement via the supply current. The backlight of LCD watches as
well as alarm functions can also be tested.
To measure the current consumption and the minimum working voltage, the battery must be
removed from the watch. Instead of the battery, the watch is powered from the
NEW TECH HANDY.
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Witschi Electronic Ltd
6.2
Procedure
Using the
SIG.SOURCE
key select the signal source
Motor
,
LCD
or
32kHz.
*
*
6.2.1
Selecting the supply voltage
Use the
SUPPLY VOLT
.
key to select the supply voltage appropriate for the watch under test (in
most cases 1.55 V). Consumption measurements should be made using the nominal battery
voltage.
The following voltages can be selected:
From 1.00 up to 1.55 V in steps of 0.05 V and from 2.20 up to 3.00 V in steps of 0.10V. Fast
selection by holding the key pressed down.
6.2.2
Measuring time
The selection of the measuring time has no influence on the current measurement but it is
important for the rate measurement. For measuring the total current consumption, the instrument
automa-tically selects the correct measurement time according to the pulse period of the stepping
motor.
Remark
:
The measuring time for LCD watches is 1 s and can not be changed.
Witschi Electronic Ltd
Page 23
6.2.3
Contacting the watch
For contacting the watch, fix it in the module holder and place it on the glass window of the NEW
TECH HANDY. The movable contact probes should be set to the points to be contacted and pressed
down far enough to depress the telescopic probes by about 1 mm. The contact arms should be hold
at their rear ends to adjust the height.
Place the red (
+
) contact probe on a point normally connected to the positive pole of the battery
(battery case). The entire base plate is connected to the positive pole in most watches.
Place the black
(
)contact probe on a point which is normally connected to the negative pole of
the battery (battery cover). The contact spring for the negative battery connection is usually the
most accessible point.
If correct contact has been properly made, the
32kHz
LED will light immediately and the
motor
LED will flash in time with the motor pulse period. If the circuit is open, the message
>Open<
is
displayed. If there is a short circuit or if the polarity is incorrect, the message
>Short<
is displayed
and a continuous alarm sounds.
The watch hands can be observed in the mirror below the window. If the watch runs, the contacts
are in order.
Warning:
Although the maximum supply current is limited to 20 mA, the watch may be
damaged if the supply is connected to the wrong points or is applied with the
incorrect polarity.
In the case of clocks, the module supply is best connected using the measuring leads.
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Witschi Electronic Ltd
6.2.4
Measurement results
After completion of the measuring cycle, the results are displayed in the appropriate fields.
RATE
Display of the rate accuracy.
PERIOD
The
I
in the field
PERIOD
means that a watch with digital adjustment is
being tested and the instrument has automatically selected a measuring
time of 60 s.
CONSUMPTION
For the first 5 s after the start of a measuring period the current
consumption of the IC is displayed (
ConsIC
) and subsequently the average
total consumption (
ConsTO
).
TIME
Indicate the running measuring time (only for rate)
6.2.5
Reset and acceleration functions of the watch
Most quartz analogue watches have a reset and acceleration function. With newer generations of
watch, these functions are activated via a common connection (
–ve
for acceleration and
+ve
for
reset). Supply the watch with power as detailed in Paragraph 8.2.3. Using the appropriate
measuring lead, also contact this connection in order to test the reset or fast-forward functions.
Reset
The reset function is operating correctly if the total current consumption is approximately equal to
the IC current consumption ( in this mode the motor pulses are suppressed). The reset function can
also be tested by pulling out the stem.
Acceleration
In this mode the watch movement is accelerated with 8, 16 or 32 motor pulses per second
depending on the type of IC. The total current consumption increases accordingly. The fast-running
of the watch hands can be observed in the mirror.
6.2.6
Test with reduced voltage
The minimum operating or starting voltage is an indication of the power reserves of the watch and
the capacity to continue running in spite of an almost exhausted or heavily loaded battery (LCD
watches with the light switched on).
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Page 25
In order to measure the minimum operating voltage, power the watch as explained in Para. 6.2.3.
While observing the hands of the watch in the mirror, use the
SUPPLY VOLT.
key to select a
reduced supply voltage of 1.10 V, 1.25 V or 1.35 V.
The minimum operating voltage for watches with a silver oxide battery should be at least 1.35 V.
7
BATTERY TEST
7.1
General information
The voltage of a watch battery remains constant almost to the end of its life and only drops when it
is fully run down. The test, even under load, only shows whether the battery is still usable or
entirely discharged. No information concerning the remaining battery life can be derived. The
battery should also be checked for leaks. The battery must be replaced if salt crystals are visible on
the sealing between the case and lid, even though the voltage level is still sufficiently high.
7.2
Procedure
Using the
TEST MODE
key, select the test mode
Batt.
*
7.2.1
Battery contacts
Place the positive (+) pole of the battery to be tested on
the
battery
holder and contact the negative (-) pole
with the black contact probe or the black measuring
lead.
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Witschi Electronic Ltd
In most cases the battery can also be tested directly in the open watch using the measuring probes.
The polarity of the battery must be observed when testing. Generally for watch batteries the case of
a battery is the positive (+) pole and the lid is the negative (-) pole. Conversely, for clock batteries
and Lithium batteries the case serves as the negative (-) pole and the contact on the lid as the
positive (+) pole.
7.2.2
Results
The battery voltage together with the basic load is displayed on the left of the LCD and, to the right
of these, the voltage with the corresponding load.
Loading the battery using a load resistor shows whether it can supply the necessary current without
the voltage dropping out of tolerance.
The basic load is
2 M
Ω
as soon as the battery is contacted and corresponds approximately to the IC
current consumption. At the same time a load of
2 k
Ω
is applied for a duration of 10 ms, which
correspond around to the peak current during the motor pulse.
*
A load of
100
Ω
is applied for duration of 500 ms by pressing the
SUPPLY VOLT. (high drain)
key. This load corresponds approximately to the current drawn when the light of an LCD watch is
activated. The loading with 100
Ω
is only used for batteries designed for supplying a high current
(high drain batteries and clock batteries).
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Page 27
7.2.3
Normal battery voltages
Silver oxide batteries, 2 k
Ω
load (low drain)
Battery
good
1.45 to 1.59 V
End of battery life
below
1.40 V
"High drain" silver oxide batteries, 100
Ω
load (high drain)
Battery
good
1.25 to 1.50 V
End of battery life
below
1.20 V
Mercury cells, 2 k
Ω
load (low drain)
Battery
good
1.25 to 1.35 V
End of battery life
below
1.20 V
Clock batteries, 100
Ω
load (high drain)
Battery
good
1.30 to 1.50 V
End of battery life
below
1.20 V
2.1 V Lithium batteries, 2 M
Ω
load
Battery
good
1.90 to 2.10 V
End of battery life
below
1.80 V
3.0 V Lithium batteries, 2 M
Ω
load
Battery
good
2.85 to 3.10 V
End of battery life
below 2.75 V
8
RESISTANCE MEASUREMENT
8.1
General Information
The resistance measuring mode is predominantly used for the location of open or short circuits in
the motor coil of analogue watches or insulation defects between coil and coil core or mounting
plate. Resistance measurements are also useful for continuity and insulation testing of connections,
circuits and switches.
The measurement is made using a constant voltage of 0.3 V.
The measuring range extends from 1
Ω
to 10 M
Ω
with automatic range selection.
Warning:
The battery must be removed from the watch for all resistance
measurements.
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Witschi Electronic Ltd
8.2
Coil Test
8.2.1
Coil resistance
Using the
TEST MODE
key, select the
Resist
test mode. Contact the points on the
Electronic
circuit where the coil is connected either by using the movable contact probes or the measuring
leads.
*
The measured resistance appears in the top right-hand corner of the display and for analogue
watches normally lies between 1 and 3 k
Ω
. The Led
motor
also lights up, if the coil is ok. For
precise information’s, please consult the watch manufacturer’s documentation.
An broken coil is indicated by
>Open<
on the display.
8.2.2
Test of the coil insulation
Contact must be made to one of the two coil connections and the mounting plate in order to check
the coil insulation.
If the insulation is good, a high resistance value is displayed in the
CONSUMPTION
field. With a
good coil the value must be considerably higher than the coil resistance.
Note
:
With older watches, in spite of the fact that the insulation is good, the displayed
insulation value can be much lower (down to as far as approx. 10 k
Ω
).
If the insulation is defective a smaller resistance value (smaller than the value of a good coil) will be
displayed. In the event of a short circuit,
>Short<
will be displayed and a warning tone sounds.
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Page 29
9
PROTOCOL OF THE TEST RESULTS
In any test mode the results can be printed out be means of the printer (optionally available). By
pressing the
print
key the parameters and test results are printed out on a 70 mm wide paper strip.
Example:
10
TROUBLE SHOOTING ON QUARTZ WATCHES
The following subparagraphs give advice on how faults on quartz watches can be quickly found.
10.1
Systematic trouble shooting
In order to quickly isolate a fault of a watch which has stopped, proceed as follows:
Place the watch on the acoustic signal sensor and check if a signal is detected ( the
32kHz
LED
lights). If no signal is present check the battery.
If the battery is in good order and the
32kHz
signal is available, check the resistance and
insulation of the motor coil.
If the coil is in order, place the watch on the
motor
inductive sensor and check that motor
pulses are present (
motor
LED lights with each motor pulse).
If the watch successfully completes all the tests listed above, the fault must be a mechanical one
such as: hands catching, blocked or very dirty watch movement, fine metal particles on the rotor
magnet, etc. For that case we recommend to use the
CYCLONIC
. Solidified oil and dirt can be
released from the bearings by rotating the gear train rapidly.
±±
New
Tech
HANDY II
±±
REF _ _ _ _ _ _ _ _ _ _ _ _ _ _
Signal source
: CurMot
Measuring time
: Aut sec
Supply voltage
: 1.55 V
R a t e
: +0.18s/d
S t e p
m o t o r
: 01 sec
C u r r e n t
I C
: 174nA
C u r r e n t
TOTAL
: 1.34uA
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Witschi Electronic Ltd
10.2
Battery
In the event of a fault, always check the battery first (see Section 8 on Page 22).
Remove any dirt or oxidation from the battery contacts and bend the contact springs back into
shape as necessary.
10.3
IC defects
Oscillator test
When the watch is placed on the
32kHz
sensor, the
32kHz
LED shows whether the quartz crystal
oscillator is functioning and whether the 32 kHz signal is present. If no signal is displayed, either
the quartz crystal, the trimmer or the integrated circuit (IC) is defective.
Motor driver stage test
When the watch is placed on the
motor
LED lights briefly with each motor pulse. If there is no
signal in spite of the fact that the motor coil is in order, then either:
the IC is defective, or
the reset remains activated although the hand-setting stem is pressed in (defective mechanism,
stem too short).
10.4
Mechanical defects
If a watch runs very slow or does not run at all, although the Electronic module and motor coil are
perfectly operational, the cause is to be sought in the mechanics of the watch. Possible defects are:
Steel particles adhering to and blocking the rotor magnet. Small particles of the metal case
bottom can be chipped off as it is screwed or snapped on.
The mechanism does not run freely or is completely blocked. An accumulation of small dust
particles in the gears may block the movement.
Check that the hands are not catching on each other, and are not touching the dial or the glass.
The "reset by stem" mechanism is defective. When the hand-setting stem is pulled out, the
seconds hand is mechanically blocked and the reset contact is closed. The mechanism should not
touch the seconds gear wheel when the hand-setting stem is pressed in and the reset contact
must be opened. This fault occurs if the mechanism is defective or the stem is too short.
Witschi Electronic Ltd
Page 31
10.5
Liquid Crystal Display (LCD)
No display on an LCD watch:
First test the battery
Place the watch on the acoustic sensor and using the
SIG. SOURCE
key select the
32kHz
test
mode:
If the
32kHz
LED does not light, either the quartz crystal, the trimmer or the IC is defective.
If the
32kHz
LED lights, the IC or the display is defective.
Single segments of the LCD are not activated:
Possible faults:
poor contact between the printed circuit and the display; carefully clean the contact pads and
contact strips.
IC or display defective
11
MAINTENANCE AND CUSTOMER SERVICE
11.1
Guarantee
Your instrument is covered by the
Witschi Electronic Ltd guarantee for 2 year from the date of
purchase. We guarantee to replace free of charge during the guarantee period, any parts which
exhibit a defect due to faulty material or manufacture. Instruments returned under guarantee
should be packed in the original packaging. Transport costs must be paid by the customer.
The guarantee does not cover the following:
Damage which occurs due to improper handling of the instrument.
Repair of damage not caused by Witschi customer service engineers, i.e. attempts by third parties
to carry out repairs or adjustments to the instrument.
Parts which, due to their function, are subject to normal wear and tear.
11.2
Maintenance
The instrument requires no special maintenance.
When removing dirt or dust from the instrument, use a soft lint-free cloth only. A lightly
dampened cloth can be used to clean the LCD.
When the instrument is not in use, protect it by using the dust cover supplied.
If the instrument is not to be used for a longer period of time (e.g. holiday absences) disconnect
the mains adapter from the mains supply.
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Witschi Electronic Ltd
11.3
Calibration
We recommend that the instrument be calibrated every 1 to 2 years by our customer service
department to ensure its measuring accuracy.
Please contact the customer service department at our head office or one of our representatives.
12
TECHNICAL DATA
Rate measurement: Measurement over the quartz frequency. Signal sensing acoustical,
capacitive or over the supply current.
Measurement over the motor pulses, magnetical or over the supply current.
Measurement over the LCD-operating frequency.
Rate measurement for mechanical watches.
Measuring times: Over the quartz frequency 1s.
Over the motor pulses o
r LCD-operating frequency: auto
matic determination for normal or
inhibition watches; from 2 up to 60 s.
Manual selection from 2 up to 480 s.
For mechanical watches: 8 s.
Short beep sound after the elapsed measuring time of 10 s or more
Signal sensor: Sensors of highest sensitivity and selectivity for acoustical, magnetical and
capacitive signals.
Signal sensing over the supply current.
Indication of the signal intensity by LED.
The sensors are also adequate for watches with closed straps.
Display of the results: Selectable display mode in s/d or s/month.
Measuring range +/- 33.3 s/d resp. +/- 999 s/month.
Resolution 0.01 s/d resp. 1 s/month.
Display of the measured motor pulse period.
Display of the remaining measuring time (count down).
Time base: Pre-aged temperature controlled high frequency quartz time base.
Stability: +/- 0.01 s/d between 10
O
and 50
O
C.
Module power supply: From 1.00 up to 1.55 V in steps of 0.05 V and from 2.20 up to 3.00 V in
steps of 0.10 V.
Current limit: 20 mA.
Display of short circuits or interruptions.
Mobile probes for direct contacting on the working surface of the instrument.
Test leads with test probes.
Built in mirror for the observation of the hands during measurement.
Current measurement: Instant measurement of the IC consumption.
Integrated measurement of the average current consumption over a motor pulse period.
Witschi Electronic Ltd
Page 33
Automatic measuring time: IC consumption: 1 s.
Total consumption over motor pulse period, min. 1 s, max. 60 s.
Manual measuring time: Same as the selected measuring time for the rate measurement.
Display of the results: 3 digit display with automatic commutation of the range.
Measuring range: from 10 nA up to 20 mA.
Resolution: 1 nA.
Display of the IC consumption after 1 s. Display of the total consumption after one motor pulse
period, not before 5 s.
Acoustical signal: Short beep sounds after an elapsed measuring time of 10 s or more.
Warning beep in case of wrong manipulation.
Battery test: Measuring range from 0 up to 5 V.
Basic load: 2 M
Ω
.
When contacting the battery: a load of 2 k
Ω
is automa
tically applied for the duration of 10
ms.
Switch on a load of 100
Ω
for the duration of 500 ms by means of the key.
Simultaneous display of the voltages for all activated loads.
Resistance measurement: Measuring range from 1
Ω
up to 15 M
Ω
.
Automatic commutation of the measuring range.
Display: 3 digit.
Resolution: 1
Ω
.
Result printout: RS232 interface port for the connection of a printer.
Print-out of the numerical results and the selected parameters.
Display: Illuminated LCD-display; two lines with 24 characters each.
Casing: Plastic casing.
Color: Light grey.
Dimensions: 260 x 130 x 150 mm (w x h x d).
Weight: 1.5 kg.
Mains connection: Plug supply adapter available for
230 V~ or 115 V~, power 11 VA.
Declaration of conformity
The equipment is in conformity with the following EC-Directives:
89/336/EWG
EMC
EN 55011 : 1991
Emissions
EN 50082-1 : 1992
Immunity, public environments
89/392/EWG
Machinery
EN 292: 1991
Page 34
Witschi Electronic Ltd
13
ACCESSORIES
13.1
Delivery
Basic equipment NEW TECH HANDY II (230 V~)
Nr. 33.11PK1
Basic equipment NEW TECH HANDY II (120 V~)
Nr. 33.11PK2
Plug supply adapter, available for 230 V~
Nr. 95.64.101
or 120 V~
Nr. 95.64.102
Wire set with probe tips and crocodile clamps
Nr. 33.10.001
Contact probes movable, pair
Nr. 26.63.700
Movement holder
Nr. 25.73
Operating instructions
Nr. 33.11D35e
13.2
Optional accessories
Witschi Thermo Printer with cable, paper and
Nr. JB01-MCP7810
universal mains adapter 90 V~ up to 260 V~.
Thermo paper, roll
Nr. JB01-MM58-DPU20-N
AutoPrint: PC software for the result file transmission to a PC
Nr. 64.55.901PK1
Dummy batteries, set with cable and wooden box
Nr. 25.6820
Witschi Electronic Ltd
Page 35
NOTES
Page 36
Witschi Electronic Ltd
NOTES