Measure And Source - Extech Instruments 412355A User Manual

Measure and Source

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MEASURE (Input)
In this mode, the unit will measure voltage or current.
1. Select Voltage or Current on the Function switch.
2. Turn the meter ON
3. Press the MODE button to select MEASURE
4. Press the UNIT button to select mA or % if current is selected.
5. Connect the Calibration Cable to the meter.
6. Connect the Calibration Cable to the device or circuit under test.
7. Read the measurement on the LCD display.
SOURCE (Output)
In this mode, the unit will source (output) voltage or current.
1. Select Voltage or Current on the Function switch.
2. Turn the meter ON
3. Press the MODE button to select SOURCE
4. Press the UNIT button to select V or mV if voltage is selected or to select mA or % if current
is selected.
5. Connect the Calibration Cable to the meter.
6. Connect the Calibration Cable to the device or circuit under test.
7. Use the buttons to select the desired output value. Use the LCD display to verify the
output level. Alternatively, use the stored calibration values in memory as described in the
MEM button section.
8. For the -25% to 125% output range the output is 0 to 24mA.
% -25%
Display
mA 0mA
output
NOTE: The SOURCE icon will blink when the output value has not reached a stable level.
The common cause for the SOURCE icon to remain blinking is that the load impedance is
too high in the current mode or too low in the voltage mode.
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0% 25% 50% 75% 100%
4mA 8mA 12mA 16mA 20mA
5
125%
24mA
412355A-EU-EN v3.3 07/13
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