NF ZM2376 - 6.5 Checking Isolation; 6.6 Performance Testing

6.5 Checking Isolation
6-4 ZM2376
6.5 Checking Isolation
Remove all power cord, cable and etc of ZM2376 to separate it from others.
Fix the measurement range of multimeter to the range, which can be measured by the specified test
current.
Set the multimeter to diode test mode (test current 1mA), and measure between the outer conductor
of each BNC connector on front panel of ZM2376 and the ground terminal (case) at bottom left.
Make sure that the voltage is within the range stated below. When out of this range, it might be
possibly damaged.
•H
CUR
vs. Case 0.4 to 0.8V (approx. 0.6V, the typical value at room temperature)
•H
POT
vs. Case 0.3 to 0.7V (approx. 0.5V, the typical value at room temperature)
•L
POT
vs. Case 0.3 to 0.7V (approx. 0.5V, the typical value at room temperature)
•L
CUR
vs. Case 0 to 0.1V (approx. 0mV)
6.6 Performance Testing
Performance testing is conducted as part of preventive maintenance to prevent performance
degradation of ZM2376. Besides, conduct it if needed after acceptance inspection, periodic
inspection or repair.
If the result of a performance testing does not meet the specifications, calibration or repair is required.
Contact NF Corporation or one of our representatives.
The performance testing should be conducted in the following conditions.
•Power supply voltage: 100 to 230V ± 10% (250V or less)
•Ambient temperature: 23 ± 5°C
•Ambient humidity: 20 to 70%RH, non-condensing
•Warm-up: 30 min or more
•Operation mode 0: Should be set at first by referring to “4.18 Switching the Operation
Mode (alternative command)”. If you do not use the remote control, the
operation mode needs not to be set.
Take the following precautions when you conduct a performance testing.
• The setting contents for each test item contains the descriptions of items which should be further
changed after initializing the setting.
Initialization of settings  “3.5.4 Initialization” _SHIFT_ + [INIT] and _1_ key
operations