TECHNICAL GUIDE
Cal. V114A
12/16
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How to measure the current consumption for the circuit block alone
1. Apply the probes of the tester as shown in the illustration.
2. Shut out the light from the circuit block.
Note: If the circuit block is exposed to light, an extremely high measurement value may be
obtained.
3. After checking that a stable measurement is obtained with the tester connected, read the current
consumption.
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Structure of the circuit block
Coil output terminal
Crystal unit
Input terminal (+)
Input terminal (-)
C-MOS-IC
* When measuring the current consumption us-
ing the SEIKO digital multi-tester (S-860), use
the range of 40 μA of SUPPLY V (=1.55V) &
GATE TIME (2S).
* Avoide exposing the CIRCUIT bLOCK to direct
light in order to obtain the correct measure-
ment.
