Installation
Basic Checks or Self-Tests
Release 3.0 47
4. Slowly turn the Current knob clockwise 1 or 2 turns. Slowly turn the Voltage
knob clockwise and observe both the front panel voltmeter and the DVM. Do not
exceed 10V.
5. Compare the DVM reading with the front panel voltmeter reading to verify the
accuracy of the internal voltmeter. Both readings should be the same within the
accuracy of the meters. The minimum control range is from zero to the
maximum rated output for the power supply model. Check that the Constant
Voltage (CV) annunciator is illuminated.
6. Press OUT ON/OFF to turn the DC output OFF.
Current Mode
Operation
Check
To complete the current mode operation check:
1. Ensure that the OUT OFF annunciator is illuminated. If OUT ON is illuminated,
press OUT ON/OFF.
2. Connect the DC shunt across the output terminals on the rear panel.
3. Connect the DVM across the DC shunt.
4. Press OUT ON/OFF to turn the DC output ON.
5. Slowly turn the Voltage knob clockwise to a maximum reading of 10V.
6. Slowly turn the Current knob clockwise to a maximum reading of 10A.
7. Compare the DVM reading with the front panel ammeter reading using I=V/R
where I is the current, V is the DVM reading, and R is the DC shunt resistance.
The minimum control range is from zero to the maximum rated output for the
power supply model. Check that the Constant Current (CC) annunciator is
illuminated.
8. Press OUT ON/OFF to turn the DC output OFF.
9. Disconnect the DVM and the shunt.
WARNING- High Temperature Hazard
Ensure that the current output does not exceed the rating of the shunt or load wiring
during this test.