Measuring Ac And Dc Voltage; Low Pass Filter - Amprobe AM-540 Manual De Uso

Measuring AC and DC Voltage

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To avoid personal injury or damage to the Meter, do not apply
voltage higher than 1000Vac and 1000Vdc.Buzzer will sound when detect a
voltage higher than 1000Vac and 1000Vdc.

Low Pass Filter

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• To avoid personal injury or damage to the Meter, do not use low pass
filter function to verify the presence of hazardous voltage in the circuit.
Always use Voltage function to verify hazardous voltages.
• Do not apply voltage higher than 1000V.
Measuring AC voltage with Low Pass Filter:
Turn rotary switch to  position and press SELECT button for Low Pass Filter
mode, symbol is displayed on screen.
Making measurement under AC voltage mode by a low pass filter can block
voltage above 1KHz. Low pass filter can be used to measure composite sine
wave signal generated by inverter and variable frequency motor drives.
9
Low imp. 400Ω
(For only)