OMEGA SA
WORLD SERVICE ORGANIZATION
GT-19-C-013-E - C - 1538
/8
Fig. 2.0
2.0 Electrical tests
Speci
fi
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 k
Ω
/ V)
1,55 V
Battery voltage
Measured with battery
2
1 V
(Ri
≥
10 k
Ω
/ 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
μ
A
1,20
μ
A
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
μ
A
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 k
Ω
1,3 - 1,8 k
Ω
Coil continuity
Measured without battery.
5
200
μ
A
110 - 155
μ
A
Coil isulation
•
Ohmmeters with measuring voltage greater than 0.40V inappropriate ; recommended voltage 0.20V.
Ambient temperature 20°C.
