Remarks On Inspection And Measurement; How To Measure The Current Consumption For The Whole Movement; How To Measure The Current Consumption For The Circuit Block Alone - Seiko 6T63A Technical Manual

TECHNICAL GUIDE

REMARKS ON INSPECTION AND MEASUREMENT

● How to measure the current consumption for the whole movement
1. To measure the current consumption for the whole move-
ment, connect the (-) probe to the battery connection (-)
and (+) probe to the other metal part of the movement,
such as battery clamp or circuit block cover.
* When measuring the current consumption using the
SEIKO digital multi-tester (S-860), use the range of 40 μ
A of SUPPLY V (= 1.55 V) & GATE TIME (2 S).
2. Connect the AC component to the positive terminal for 2
seconds until a short circuit occurs to reset the integrated
circuit.
3. After the integrated circuit is reset, wait approximately for
10 seconds until a stable measurement is obtained, and
then read the measurement.
4. Make sure the read value is less than 2.7 μ A.
● How to measure the current consumption for the CIRCUIT BLOCK alone
1. To measure the current consumption for the CIRCUIT
BLOCK alone, connect each probe to the appropriate
positive (+) or negative ( - ) input terminal of the CIR-
CUIT BLOCK (please refer to "Structure of the CIRCUIT
BLOCK" below).
* When measuring the current consumption using the SEI-
KO Multi-Tester S-860, use the range of 4 μ A of SUPPLY
V (= 1.55 V) & GATE TIME (2 S).
2. Repeat the same procedures as 2. and 3. of measuring
current consumption for the whole movement above.
* When measuring the current consumption for the circuit
block alone, be careful not to damage or deform the pat-
tern of the circuit block.
3. Make sure the read value is less than 0.7 μ A.
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Cal. 6T63A