412400 Datasheet, PDF (4/8 Pages) Extech Instruments Corporation. – Multifunction Process Calibrator

SOURCE MODE
1. Press the POWER button. The meter will turn on in the MEASURE mode and in the
function last used.
2. Press and release the MODE I/O button to change the function desired (Temperature,
Voltage, or Current)
3. Press and hold the MODE I/O button until SOURCE appears in the display.
4. Press the UNIT TYPE button to select the current units (mA, %) or temperature units
(°C, °F). Voltage is autoranging.
5. Adjust the output using the ▲▼buttons
• Press the ▲ button once to increase the value in one-digit steps.
• Press and hold the ▲ button to increase the value in ten-digit steps.
• Press and hold the ▲ button > 2 sec and then press the ▼ to increase the
value in 100 digit steps
• To decrease the value, use the ▼ button as described above.
6. In the Current function, the -25% to 125% output range corresponds to the 0 to 24mA
output range.
% Display -25% 0%
25% 50% 75% 100% 125%
mA output 0mA 4mA 8mA 12mA 16mA 20mA 24mA
NOTE: The “SOURCE” icon will blink until the output level has stabilized. The
most common cause for the “SOURCE” icon to continue blinking is that the load
impedance is too high in the current mode or too low in the voltage mode.
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412400 V5.0 9/08