Amprobe DM73C Manuel de l'utilisateur - Page 8

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MEASURING PROCEDURES

Note: When connecting or disconnecting test leads to or from a

circuit, always first turn off power to the circuit under test and

discharge all capacitors.

DC / AC Voltage Measurement

Set the Function switch to "V". Select AC or DC by pressing the

mode selector button (AC or DC is displayed). Connect the

instrument to the circuit and read the measured voltage in the

display.

Set the Function switch to " Ω ". Connect the instrument across the

resistance and read the value in the display. When measuring high

resistance values, take care not to touch the test leads.

Set the Function switch to Ω . Press the mode selector button once,

so that appears ( ) in the LCD. Connect the instrument across the

device or wire to be tested. Beeper will sound when continuity is

established. The beeper also sounds when changing functions,

modes, or for Probe Hold.

Set the Function switch to Ω . Press the mode selector button twice,

so that appears (

) in the LCD. Connect the instrument across

the device to be tested. The forward voltage drop of a good diode is

about 0.6V. An open or reverse biased diode will read "OL".

Push the HOLD button to "freeze" the measurement reading and

then remove the test leads while the reading remains displayed.

HOLD is useful when it is necessary to pay very close attention to

your work. Pushing the HOLD button again releases the display.