Witschi Electronic Ltd
Analyzer Q1
Page 23
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.
-
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 Q1 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
