Front Panel Operation
How to Set Output 4
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• COMP (Compensation) Applies 2-wire compensation or turns compensation off.
Compensation refers to methods of connecting the Calibrator to the UUT to cancel
out test lead resistance (NOT capacitance). Compensation is available for
capacitances of 110 nF and above. This softkey will not function below 110 nF. See
“Four-Wire versus Two-Wire Connections” earlier in this chapter for more
information.
How to Set Temperature Simulation (Thermocouple)
Note
Thermocouples have no electrical isolation.Make sure the thermocouple
wire and plug are not affected by extraneous temperature sources. For
example, do not place your fingers on the thermocouple plug or wire when
simulating a temperature.
Thermocouples generate a small dc voltage at specific temperatures. The simulated
output, therefore, is a small dc voltage based on the selected temperature and type of
thermocouple being simulated. To toggle the temperature reference between the 1968
International Provisional Temperature Standard (ipts-68) and the 1990 International
Temperature Standard (its-90), see “How to Use the Instrument Setup Menu.”
Complete the following procedure to set a simulated thermocouple temperature output at
the Calibrator front panel TC connector. If you make an entry error, press Gto clear
the display, then reenter the value.
1. Press R to clear any output from the Calibrator.
2. Connect the UUT as described earlier in this chapter under “Connecting the
Calibrator to a UUT.”
Note
You must use thermocouple wire and miniconnectors that match the type of
thermocouple. For example, if simulating a temperature output for a type K
thermocouple, use type K thermocouple wire and type K miniconnectors.
3. Set the UUT to measure temperature on the desired range.
4. Press the numeric keys and decimal point key to enter the desired temperature output
(maximum 6 numeric keys). For example, 123.456.
5. For an output in °C, press the C key. For an output in °F, press and then the C
key.
6. The Control Display now shows the amplitude of your temperature output. For
example, 123.456 °C (below).
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