Omicron CMC 310, User Manual

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CMC 310 User Manual
20 OMICRON
4.2.2 Operational limits with current and voltage amplifier in
parallel
A parallel operation of current and voltage amplifier lowers the maximum output power of the CMC 310 .
To limit the internal losses and to maximize the output power of the voltage amplifier, set the maximum
test object voltage to the minimum value possible for the test.
Typical test set uptime for different power outputs
4.3 System clock accuracy
All signals generated or measured by the CMC 310 refer to a common internal time base that is specified
as follows:
Current amplifier Voltage amplifier
t1
1
1. t1 = maximum possible uptime for a cold CMC 310 test set.
3 × 200 W at 20 A 3 × 60 W at 85 V
>1800 s
2
2. At an ambient temperature of 23 °C, when operating the CMC 310 test set with a low power supply, allow a duty cycle of
10 min on/10 min off.
3 × 250 W at 20 A 3 × 85 W at 85 V
600 s
3 × 430 W at 20 A 3 × 100 W at 85 V
500 s
Characteristic
Specification
Clock performance Stratum 3 (ANSI/T1.101-1987)
Frequency drift (over time)
24 hours
20 years <±0.37 ppm (±0.000037 %)
<±4.60 ppm (±0.00046 %)
Frequency drift (over temperature range) <±0.28 ppm (±0.000028 %)