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(8) Auto Power Off (APO)
The APO sign on the LCD panel indicates the meter is working in the Auto Power Off mode. If the meter idles
for more than 10 minutes, the meter automatically turns the power off. When this happens, the reading is
saved. The meter can be turned back on by pushing any switch or changing the rotary mode. If the meter is
repowered like this the LCD displays the saved reading. Press the Hold switch to disable the hold state. The
meter will produce an audible alarm 15 seconds before automatically turning off power. The time-out for
Auto-Power-Off can be reset by pressing any switch or turning the rotary switch.
(9) Disable Auto Power Off
To disable the auto power off function, press any of the switches (other than HOLD or the YELLOW switch)
whilst powering the meter up.
(10)
Hz sensitivity
The sensitivity in the
Hz mode is 1/10 of full scale range.
The accuracy is same as Frequency mode. The measuring frequency is from 40Hz up to 1KHz.
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