TECHNICAL GUIDE
Cal. V157A/V158A
12/18
* When measuring the current consumption using
the SEIKO digital multi-tester (S-860), use the
range of 40μA of SUPPLY V (=1.55V) & GATE
TIME (2S).
* Avoid exposing the CIRCUIT BLOCK to direct light
in order to obtain the correct measurement.
2) Wait until a stable measurement becomes available. It usually takes 30 seconds to a few minutes
for getting a stable measurement.
3) Make sure that the read value is less than 0.40μA.
Note:
In case the measurement of the current consumption for a whole movement exceeds the standard
value but the measurement for the circuit falls below the standard value, a problem in the gear train
mechanism is suspected. Please disassemble and overhaul the movement and measure the current
again.
<How to measure the current consumption for the CIRCUIT BLOCK alone>
1) Connect each probe to the appropriate (-) and (+) input terminal of the
ws CIRCUIT BLOCK (please
refer to the "Structure of the CIRCUIT BLOCK" below).
[Structure of the CIRCUIT BLOCK]
Solar cell input terminal (-)
Input terminal (+) (Also serves as a solar cell input terminal
Input terminal (-)
C-MOS-IC
Crystal
Coil output terminal
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