6-14
IM 2553A-01EN
Manual Input
You can set the reference junction temperature with the output setting dials. The 2553A sources
thermoelectromotive force that is corrected using the specified temperature. If you do not want to
apply correction (not use the RJC function), set the temperature to 0.00°C.
Selectable range: -20.00°C to +60.00°C
Reference Junction Temperature Display
The reference junction temperature is displayed with 0.01° resolution.
• While correcting the source thermoelectromotive force with an external or internal reference junction
temperature, if the reference junction temperature goes outside the specification range, the RJC
indicator will blink.
• If you change the polarity from positive to negative in manual input mode and the setting goes
outside the manual-input selectable range, the setting and polarity displays will blink. If you turn
any of the output setting dials in this condition but the setting still remains outside the manual-input
selectable range, the setting is changed to –20.00°C, and the blinking will change to solid.
Resistance R0 of the External RJ Sensor
Set the resistance for when the RJ sensor (RTD Pt100) you want to use is at 0°C. The default value is
100.00 Ω.
Selectable range S: 99.00 Ω to 101.00 Ω
<<Command Mnemonic>>
:SOURce:RJC:MODE {AUTO|INTernal|MANual}
:SOURce:RJC:STATe?
:SOURce:RJC:TEMPerature:AUTO
:SOURce:RJC:TEMPerature:EXTernal?
:SOURce:RJC:TEMPerature:INTernal?
:SOURce:RJC:TEMPerature:MANual
:SOURce:RJC:RESister?
:SYSTem:RJC:RESister <
Resistance
>
6.5 Setting Reference Junction Compensation