General Tools and Instruments GT310 - Manual (Page 12)

OPERATING INSTRUCTIONS
GENERAL INSTRUCTIONS
• To hold (freeze) a reading, briefly press the Hold/CH button.
• To turn the beeper on or off, press and hold the Buzzer button.
• To turn the backlight on or off, briefly press the Buzzer button.
• The meter is equipped with an Auto Power Off (APO) function that is
triggered by 15 minutes with no input. It cannot be disabled. To
“wake up” the meter in the same measurement state (but not
transmission/reception state) it was in when the APO function
activated, briefly press the Power/Tx/Rx/Ax button (Callout 7 of
Fig. 1). You need not turn the rotary dial to power the meter on again.
• Each time you finish using the meter, turn the rotary dial to the OFF
position.
• To ensure the accuracy of measurements, make sure that the points
touched by the test probes are free from dirt, oil, lacquer, and similar
substances.
• Until you configure the meter for wireless operation, only the upper
readout will display measurements. In
“normal” operating mode, the display will
look
like this:
MEASURING DC OR
AC VOLTAGE
F!
Do not exceed maximum ratings. Do not contact circuits or
parts of circuits in which voltages with amplitudes greater than 25V
ACrms or 35VDC may be present.
Turn the rotary dial to the V position. The unit mV will appear at the
right of the display. The symbol
will appear at the top left of the
display, below the word AUTO, indicating that the meter is ready to
measure DC voltage in Auto ranging mode.
To measure AC voltage, briefly press the Select/0-9 button to change
the
symbol to
~
.
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