Compliance West GFM-200A, Instruction Manual

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6
Initial Checkout Procedure
The following procedure will allow you to verify that the Tester is working correctly before use. The
only test equipment required is the unit itself.
CAUTION
High current. Risk of burns. Remove any conductive jewelry before using the Tester.
1. Make sure switch is on the OFF position.
2. Remove other objects from the work area to avoid shock.
3. Plug your Tester to a correctly rated source of supply.
4. Turn Variac Knob to the minimum.
5. Connect a Voltage meter at the output.
6. Turn the power switch to the I or ON position.
7. Increase the voltage by turning the variac knob clockwise and confirm voltage meter in the front
panel is in accordance with the Voltage meter connected at the output, current meter should
not move, significantly.
8. Decrease the voltage knob to minimum and turn O or OFF the power switch.
9. Short circuit the output leads and connect a current clamp meter at one of the leads.
10. Turn the power switch to the I or ON position.
11. Increase the current by turning the variac knob clockwise and confirm current meter in the front
panel is in accordance with the current clamp meter, voltage meter should not move
significantly.
12. Turn variac knob to minimum and turn OFF the power switch.
Operating Techniques
The following paragraphs describe how to operate your GFM-200A Tester. In the following sections,
EUT means Equipment Under Test.
1. Make sure switch is on the OFF position.
2. Plug your Tester to a correctly rated source of supply.
3. Turn Variac Knob to the minimum.
4. Connect the output clamp leads to the EUT, making sure the alligator clamp makes as much
conductor contact as possible. This avoids extra resistance.
5. Turn the power switch to the I or ON position.
6. Adjust the desired current / voltage level by increasing the voltage knob.
7. When test is finish, decrease the voltage knob to minimum and turn OFF the tester.