Huayi H782, Инструкция по эксплуатации

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H782 ProcessMultimeter
Operation guidance
7) OL triggering: in REL mode, when the input value higher than the
allowable value within this range, it shows OL, press this key again,
the relative value measurement function cancels; when OL is
showing on the screen, REL mode is not accessible.
4.7 Measurement preparation
1) Turn the rotary switch, switch on the power. If the battery
voltage is low (≤4.4V approximately), the display shows the symbol
,
which indicates that the battery pack needs to be charged.
2) The symbol nearby the input wire indicates the input voltage
or current shall not be higher than indicated value, in order to
protect the internal line from damage.
3) Turn the rotary switch to required measuring function and range.
4) When connecting wires, the common test wire shall be connected
first, then the live test wire. And when removing wires ,the live
test wire shall be removed first.
5) Never measure high voltage or current when the rotary switch is
at ―Ω‖ scale.
And never carry out misoperation of voltage measuring when the
rotary switch is at ―mA‖ or ―μA‖ scale, inorder to avoid damage to
the instrument.
6) Do not connect the test lead to measured signal when turning the
rotary switch.