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Analyzer Q1
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.
