Features and Functions 3
Keysight 34420A User’s Guide 85
RTD Measurements
– The meter supports RTDs with a = 0.00385 (DIN/IEC 751) or a = 0.00391. The
nominal value of the RTD (R
0
) must be in the range of 4.9 W to 2.1 kW. RTD
Connections are shown on page 29.
– The meter makes a 4-wire measurement for RTD’s. All four input leads must be
connected.
– Front Panel operation: Set RTD as the probe type under the 1: PROBE TYPE
command in the TEMPerature menu.
Select the RTD type under the 3: RTD TYPE command in the TEMPerature menu.
Enter the 0 °C resistance of the RTD (R
0
) in the 4: RTD R0 command in the
TEMPerature menu.
– Remote operation: Use the following commands for temperature
measurements with RTD’s:
CONFigure:TEMPerature FRTD,{85|91}[,1,<resolution>]
MEASure:TEMPerature? FRTD, {85|91}[,1,<resolution>]
SENSe:FUNCtion "TEMPerature"
SENSe:TEMPerature:TRANsducer:TYPE FRTD
SENSe:TEMPerature:TRANsducer:FRTD:TYPE {85|91}
SENSe:TEMPerature:TRANsducer:FRTD:RESistance <value>
Thermistor Measurements
– Only the 5 kW thermistor type is supported. Thermistor connections are shown
on page 28.
– The thermistor must be connected to the Channel 1 inputs.
– Front Panel operation: Set THERM as the transducer type under the 1: PROBE
TYPE command in the TEMPerature menu.
– Remote operation: use the following commands for temperature
measurements with a thermistor:
CONFigure:TEMPerature THER, DEF,[,1,<resolution>]
MEASure:TEMPerature? THER, DEF,[,1,<resolution>]
SENSe:FUNCtion "TEMPerature"
SENSe:TEMPerature:TRANsducer:TYPE THER
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