Keypad And Switch Descriptions - Extech Instruments 412300A User Manual

Keypad and Switch Descriptions

POWER BUTTON and AUTO POWER OFF FEATURE
1. Use the POWER button to turn the unit ON or OFF. When the unit is powered up, a short self-
test will ensue after which the display will stabilize.
2. This meter can either be powered by one 9V battery or an AC adapter.
3. When the battery symbol appears on the LCD display, replace the battery as soon as possible.
Low battery power may cause inaccurate readings and erratic meter operation.
4. This instrument is equipped with Auto Power OFF which turns the meter off after 10 minutes of
inactivity. To override this feature; press and hold the MODE button until the display shows
(auto power off de-activated) or
FUNCTION SLIDE SWITCH
1. Slide the Function switch on the side of the meter to the desired function (Source/Measure or
Power/Measure).
2. In the Source/Measure position the meter can be used to generate current or measure current
(MODE button is used to choose Source or Measure).
3. In the Power/Measure position, the meter can power a current loop with 24Vdc and, at the same
time, measure the current.
MODE BUTTON
Press the MODE button to select either SOURCE (output) or MEASURE (input). This applies when
the Function switch is set to Source/Measure.
UNIT BUTTON
Press the UNIT button to select mA or % units.
▲▼
INCREASE / DECREASE BUTTONS
▲ ▼
Use the buttons to increase or decrease the output current value in the source mode.
▲
1. Press the
2. Press and hold the
3. Press and hold the
steps
4. To decrease the value, use the
ZERO BUTTON
The ZERO button manually zeros the display in the MEASURE mode.
1. Set the meter to the MEASURE mode
2. Short the input jack
3. Press and release the ZERO button
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button once to increase the value in one digit steps.
▲
button to increase the value in 10 digit steps.
▲
button >2 sec and then press the
▼
button as described above.
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(auto power off activated).
▼
to increase the value in 100 digit
3 412300A-EU-EN v3.4 07/13