AMETEK DLM 600W Series - Manual (Page 51)

DLM 600W Series
M362161-01 Rev J 3-5
3.3.2 Constant–Voltage Mode Operation Check
1. Ensure that the front panel POWER and OUTPUT switches are in the OFF
position (switch buttons out).
2. Connect a digital voltmeter (DVM) to measure the voltage at the output terminals
3. Turn the VOLTAGE control on the front panel fully counter–clockwise.
4. Turn the CURRENT control on the front panel fully clockwise.
5. Turn the front panel POWER and OUTPUT switches to the ON position (switch
buttons in).
6. Slowly turn the control for the VOLTAGE clockwise and observe the values of the
VOLTAGE display and the DVM. Adjust the control for the VOLTAGE across its
full range.
7. Compare the DVM reading with the front panel display reading to verify the
accuracy of the front panel display for VOLTAGE.
8. Ensure that the control for VOLTAGE adjusts the output voltage across the full
rated voltage range. Also, the VOLTAGE indicator should be on and the
CURRENT indicator should be off.
3.3.3 Constant–Current Mode Operation Check
1. Ensure that the front panel POWER and OUTPUT switches are in the OFF
position (switch buttons out).
2. Connect a DC shunt across the output terminals. Ensure that the rating of the DC
shunt and the connecting wire exceed the output current capability of the power
supply.
3. Connect a digital voltmeter (DVM) across the DC shunt.
4. Turn the CURRENT control on the front panel fully counter–clockwise.
5. Turn the VOLTAGE control on the front panel fully clockwise.
6. Turn the front panel POWER and OUTPUT switches to the ON position (switch
buttons in).
7. Turn the control for the CURRENT slowly clockwise and observe the values of the
CURRENT display and the DVM. Adjust the control for the CURRENT across its
full range.