[SENSe:]TEMPerature:TRANsducer:TYPE
Syntax
[SENSe:]TEMPerature:TRANsducer:TYPE <probe_type> [, (@<ch_list>)]
[SENSe:]TEMPerature:TRANsducer:TYPE? [(@<ch_list>)]
Description
This command selects the temperature transducer probe type to use for measurements on the specified channels. If you omit the optional <ch_list> parameter, this command applies to the internal DMM, independent of any channels or a scan list.
The following table shows which temperature transducers are supported by each of the multiplexer modules.
|
|
Thermocouple |
RTD |
RTD |
Thermistor |
|
|
34921A |
Yes1 |
Yes |
Yes |
Yes |
|
|
34922A |
Yes2 |
Yes |
Yes |
Yes |
|
|
34923A |
Yes2,3 |
Yes4 |
Yes4 |
Yes5 |
|
|
34923A |
Yes2,3 |
Yes4 |
No |
Yes5 |
|
|
34924A |
Yes2,3 |
Yes4 |
Yes4 |
Yes5 |
|
|
34925A |
Yes2 |
No |
Yes5 |
No |
|
|
34925A |
Yes2 |
No |
No |
No |
|
|
1 Optional
34921T Terminal Block is required for thermocouple measurements with built-in
internal reference junction. |
|||||
Parameters
|
Name |
Type |
Range of Values |
Default Value |
|
<probe_type> |
Discrete |
TCouple | |
|
<ch_list> |
Numeric |
One or more channels in the form (@sccc). |
If <ch_list> is omitted, this command applies to the internal DMM. |
Remarks
If you omit the optional <ch_list> parameter, the configuration applies to the internal DMM, independent of any channels or a scan list (any existing scan list is not redefined). An error is generated if the internal DMM is not installed or is disabled.
Thermocouple measurements directed at the internal DMM (i.e., no <ch_list> specified) require that a fixed reference junction temperature be used (see [SENSe:]TEMPerature:TRANsducer:TCouple:RJUNction:TYPE command).
For 4-wire RTD measurements (FRTD), the instrument automatically pairs channel n in Bank 1 with channel n+20 in Bank 2 (34921A, 34923A) or n+35 (34922A, 34924A) to provide the source and sense connections. For example, make the source connections to the HI and LO terminals on channel 2 in Bank 1 and the sense connections to the HI and LO terminals on channel 22 (or 37) in Bank 2. Specify the paired channel in Bank 1 (source) as the <ch_list> channel (channels in Bank 2 are not allowed in the <ch_list>).
The instrument selects thermocouple as the probe type after a Factory Reset (*RST command). An Instrument Preset (SYSTem:PRESet command) or Card Reset (SYSTem:CPON command) does not change the setting.
Return Format
The query command returns "TC", "RTD", "FRTD", or "THER" for each channel specified. Multiple responses are separated by commas.
Examples
The following command selects the RTD probe type on channels 3 and 13 in slot 1.
TEMP:TRAN:TYPE RTD, (@1003,1013)
The following query returns the probe selections on channels 3 and 13 in slot 1.
TEMP:TRAN:TYPE? (@1003,1013)
Typical Response: RTD,RTD