Front Panel Operation
How to Set Output 4
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• Out@TC terminal (Output at the front panel TC terminals) Displays the actual dc
voltage at the front panel TC terminals. This is a display only, not a softkey function.
• TC MENUS (Thermocouple Menu) Shows submenus for thermocouple outputs.
• UNITS (Temperature Units) Selects °C or °F as the temperature unit.
• REF SRC (Reference Source) Selects intrnl (Internal) or extrnl (External)
temperature reference source. Select intrnl when the selected thermocouple has
alloy wires and you are using the isothermal block internal to the Calibrator.
Select extrnl when using an external isothermal block, and when the selected
thermocouple has copper wires. Press the REF softkey to enter the value of the
external temperature reference. The best accuracy is obtained when you use
extrnl and the external isothermal block is maintained at 0 °C.
• REF (Temperature Reference) Displays the value of the temperature reference.
When the Reference Source is Internal, the display shows the internal reference,
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