411 DC and AC Amps Calibration Front Panel

The dc and ac amps calibration requires a boost amplifier or transconductance amplifier capable of 10 A output at both dc and 1 kHz.

1. If the meter is already in calibration mode, press the (^B or button to select A DC calibration. Otherwise, select calibration mode first (press Cal Enable button for three seconds), then select A DC calibration by pressing the ( button four times.

2. Connect the output of the boost amplifier to the [10 A] and COM inputs of the meter.

3. Apply the dc amp output indicated in Table 4-5 (step 22), and calibrate using the A button.

4. Select A AC calibration on the meter by pressing the ( button once.

5. Apply the two ac amp outputs called for in steps 23 and 24 of Table 4-5, calibrating each step by using the (auto) button.

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