note:
When the battery voltage
≤
7.5V, the display shows "
" (undervoltage) symbol.
However, in the case of using a backlight or an illuminator, the "
" symbol may
be displayed when the battery voltage is
≥
7.5 V due to a large operating current, and
the "
" symbol may not show the accuracy of the measurement ), Then do not replace
the battery, in the absence of backlight, the case of normal use of light until the "
" symbol display re-line replacement.
4.4 automatic shutdown
1) If there is no operation for any 15 minutes after power on, the instrument will go
to sleep automatically to save power. 1 minute before the shutdown, the buzzer has 5
prompts, shut down before a long sound into the dormant state. (Note: automatic shutdown
is still 3 ~ 5uA of the working current, a long time do not use the best to go to OFF
or unplug the battery)
2) automatically shut down, press the FUNC key, the instrument to resume working status.
Or turn the knob switch to OFF, and then rotate to the desired range.
3) If the "FUNC" key is pressed while the unit is turned on, the auto power off function
is canceled.
4.5 buzzer
When the key is pressed or the function switch is on, the buzzer will sound "Beep"
(about 0.25 seconds). If the measured voltage or current is greater than the set alarm
value, for example, the AC voltage is greater than 600V, The voltage is greater than
600V, AC and DC current greater than 10A, the buzzer will continue to pronounce, as
over-range warning; automatically shut down about 1 minute before the buzzer will be
issued five consecutive warning, before the shutdown buzzer will send a long warning ;
When the automatic shutdown function is canceled, every 15 minutes will be issued 5
consecutive warning.
4.6 Preparation for measurement
1) toggle the switch and turn on the power. If the battery voltage is low (about
≤
7.5V),
the display 14