Duty Ratio; Maintenance; General Maintenance - MAC TOOLS EM720T Notice D'instructions

Duty Ratio

Measuring Range
10~90%
Through grade HZ/DUTY:
- Frequency response:40~3KHz.
- The input voltage range: ≥2V AC RMS (input voltage will in-
crease when the frequency to be measured increases).
- Maximum input voltage: 600V AC RMS.

MAINTENANCE

This section provides basic maintenance information, including
instructions for the battery. Do not try to repair the meter unless you
are an experienced maintenance person with the relevant calibration,
performance testing and maintenance data.

General Maintenance

To avoid injury or damage to the meter, don't wet the
inner parts of the meter. Before opening the case or
battery cover, remove the connecting cable between
the test probe and the input signal.
Regularly clean the meter case with damp cloth and a small amount of
detergent. Do not use abrasives or chemical solvents. If the input jack
becomes dirty or wet, it may affect the measurement readings.
800.MACTOOLS
Resolution
1%
WARNING
Accuracy
±2%
15