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4. Compare the DVM reading with the front panel Voltage display to verify the accuracy of the
Voltage display.
5. Ensure that the front panel CV indication on the LCD screen is active.
6. Turn off the front panel Power switch.
3.7.4
Constant Current Check
1. Ensure that the front panel Power switch is at Off position and the DVM connected to the output
terminals shows zero voltage.
2. Connect a DC shunt across the output terminals.
3. Ensure that the shunt and the wires current ratings are higher than the power supply rating.
4. Connect a DVM to the shunt.
5. Turn the front panel Power switch to On position.
6. Turn on the output by pressing the OUT button so the OUT LED illuminates.
7. Observe the power supply Current display and rotate the Current encoder.
8. Ensure that the output current varies while the Current encoder is rotated. The minimum control
range is from zero to the maximum rated output for the power supply model.
9. Compare the DVM reading with the front panel Current display to verify the accuracy of the
Current display.
10. Ensure that the front panel CC indication on the LCD screen is active.
11. Turn off the front panel Power switch.
12. Remove the shunt from the power supply output terminals.
3.8
Connecting the Load
1. Turn off the AC input power before making or changing any rear panel connection.
2. Ensure that all connections are securely tightened before applying power.
WARNING
There is a potential shock hazard when using a power supply with an output voltage
greater than 60VDC. Turn off the AC input power before making or changing any rear
panel connection.
Ensure that the protection of output plug is mounted and properly assembled for power
supplies when output voltage exceed 60VDC. Ensure that all connections are securely
tightened before applying power.
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