Omega 1538 - Specifi C Information for Calibre 1538; 2.0 Electrical Tests

OMEGA SA WORLD SERVICE ORGANIZATION GT-19-C-013-E - C - 1538
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Fig. 2.0
2.0 Electrical tests
Specifi c information for calibre 1538
Adjustment of the operation by inhibition. The operation can
only be measured with a device used to measure intervals
of 60 seconds or multiples of 60 seconds. The rate must be
measured with ambient temperature between 20°C and
30°C.
Pos. Setting of apparatus Measurement Test Remarks
1
2 V
(Ri ≥ 10 kΩ / V)
1,55 V
Battery voltage Measured with battery
2
1 V
(Ri ≥ 10 kΩ / V)
For Witschi Q 6000:
the motor LED lights up
at each impulse.
Impulses per minute at
the integrated circuit
output 1 per second.
Measured with checked battery.
3
10 μA
1,20 μA
Movement
consumption
Measured without battery,
external supply, 1.55 V
Jump of four steps every
four seconds until supply
voltage < 1,30 V
EOL. Consumption
higher than normal.
Measurement without battery,
with supply voltage < 1.40 V,
EOL function after
~ 2 minutes.
0,5 μA
Operation of the time setting
stem switch in position 3
Measured without battery,
external supply, 1.55 V.
2 V
≤ 1,30 V
Bring the R/T point and track – .
Control of motor with 8 steps/
sec at 1.55 V and 32 steps/sec
under voltage ≤ 1,30 V (EOL).
Lower limit for operating voltage. Measured without battery,
variable external supply, starting
with 1.55V, continually reduce
voltage until movement stops.
4 • 10 kΩ 1,3 - 1,8 kΩ
Coil continuity
Measured without battery.
5 200 μA 110 - 155 μA
Coil isulation
• Ohmmeters with measuring voltage greater than 0.40V inappropriate ; recommended voltage 0.20V.
Ambient temperature 20°C.