Peak Max And Peak Min; Low Pass Filter Function - Extech Instruments EX820A User Manual

1000 a ac true rms clamp meter with ir thermometer

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Operation

3. Insert the black test lead plug into the negative COM jack. Insert the red

test lead plug into the positive V jack.

4. Touch the black test probe tip to the negative side of the circuit. Touch the

red test probe tip to the positive side of the circuit.

5. Read the voltage value in the display.

5.6.1 Peak Max and Peak Min

When measuring voltage, press the PEAK button to activate the peak capture

circuit. The display icon

ured signal's positive peak. Press the PEAK button again to step to the

mode, the display will now show the negative peak. Press the PEAK button

again to exit this mode.

When measuring AC voltage you can introduce a low pass filter into the meas-

urement circuit. This allows you to safely measure voltage on variable fre-

quency drives (VFD), and other such devices. Follow the steps above to set

up a test, and continue with the steps below.

1. When measuring AC voltage, long press the LPF button for 2 seconds to

activate the low pass filter. LPF will appear on the display.

2. The low pass filter is now active, read the voltage on the display.

3. Long press the LPF button for 2 seconds to exit.

#NAS100175; r. AA/97099/97616; en-US

will appear and the display will show the meas-

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