TECHNICAL GUIDE
Cal. 5T82A
24/26
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Coil block resistance
IV.
VALUE CHECKING
Coil block (A) (4002 700)
Coil block for city setting (4002 700)
Coil block for ALARM (4002 711)
Coil block for WORLD TIME (4002 711)
2.10 K
Ω
~ 2.70 K
Ω
2.10 K
Ω
~ 2.70 K
Ω
1.80 K
Ω
~ 2.40 K
Ω
1.80 K
Ω
~ 2.40 K
Ω
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Upconverter coil resistance :
150
Ω
~ 180
Ω
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Current consumption
Less than 1.10 µ A (with 1.55 V supplied from a battery)
Less than 0.30 µ A (with 1.55 V supplied from a battery)
For the whole movement
For the circuit block alone
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How to measure the current consumption
1. To measure the current consumption for the circuit block alone or for the whole move-
ment, connect the each tester of S-860 to the appropriate positive (+) or negative (-) input
terminal of the circuit block.
* When measuring the current consumption using the SEIKO Multi-Tester S-860, select the measure-
ment range as follows:
For the whole movement:
Use the range of 40 µ A of SUPPLY V (= 1.55 V) & GATE TIME (2 S)
For the circuit block alone:
Use the range of 4 µ A of SUPPLY V (= 1.55 V) & GATE TIME (2 S)
* When measuring the current consumption for the circuit block alone, be careful not to damage or de-
form the pattern of the circuit block.
2. Connect the AC component to the positive terminal for 2 seconds until a short circuit oc-
curs to reset the integrated circuit.
3. After the integrated circuit is reset, wait approximately for 10 seconds until a stable meas-
urement is obtained, and then read the measurement.
* When measuring the current consumption for the circuit block alone, be sure to protect the integrated
circuit from light.
* Refer to the illustration below to measure the current consumption for the circuit block alone.
