Specifications

RIGOL Chapter 2 Command System
2-164 M300 Programming Guide
[SENSe:]TEMPerature:TRANsducer:TCouple:RJUNction:TYPE
Syntax [SENSe:]TEMPerature:TRANsducer:TCouple:RJUNction:TYPE <type>[,(@<ch_list>)]
[SENSe:]TEMPerature:TRANsducer:TCouple:RJUNction:TYPE? [(@<ch_list>)]
Description Set or query the reference source type of the thermocouple temperature measurements on
the specified channels.
Parameters
Name
Type
Range
Default
<type>
Discrete
{INTernal|EXTernal|FIXed}
INTernal
<ch_list>
Channel
List
One or more channels (only for the
multiplexer channels), the rules are as
follows:
(@101):channel 01 on the module in Slot1;
(@101:103):channel 01 through 03 on the
module in Slot1;
(@101:103,301):channel 01 through 03 on
the module in Slot1 and channel 01 on the
module in Slot3.
If the parameter
is omitted, this
command will be
applied to the
whole scan list.
Explanation  The thermocouple measurements require a reference junction temperature. For the
reference junction temperature, you can select the internal reference source (acquire
the temperature of the module wiring terminal), the external reference source (acquire
the temperature of the thermistor or thermal resistor) or a known temperature.
 When the reference source type is set to FIXed, you can specify a value between
-20 °C and +80 °C using the [SENSe:]TEMPerature:TRANsducer:TCouple:RJUNction
command. You must always specify the temperature in degrees Celsius regardless of
the temperature unit currently selected using the
UNIT:TEMPerature command.
 Before selecting external reference source, please find the first module which supports
the temperature measurement function starting from Slot1. Then configure the first
channel of this module to a temperature measurement function (THER, RTD or RTD
4W). Otherwise, you can not select external reference for other channels. This channel
is then reserved as the reference channel. At this point, you can select external
reference sources for other channels. If this channel is deleted or its function is
modified, the channels taking this channel as the reference source will revert to the
internal reference automatically.
 When the thermalcouple reference source is set to EXTernal and the measurement of
this reference source is initialized, the thermalcouple measurements use the
measurement value of this reference source as the reference source temperature and
the reference source temperatures of other thermalcouple channels all refer to the
measurement value of this reference source.
 The instrument selects the internal reference source after a Factory Reset (send the
*RST command). An Instrument Preset (send the SYSTem:PRESet command) or Card
Reset (send the
SYSTem:CPON command) does not affect the current reference
source setting.
Return
Format
The query returns INT (internal), EXT (external) or FIX (fixed) for each channel specified.
Multiple return values are separated by commas.
Example TEMP:TRAN:TC:RJUN:TYPE FIX,(@101:103)
TEMP:TRAN:TC:RJUN:TYPE? (@101:103,205)
The query returns FIX,FIX,FIX,INT.
Related
commands
SENSe Command Subsystem
[SENSe:]TEMPerature:TRANsducer:TCouple:RJUNction