VXi VT1422A 사용자 설명서

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The <sub_type> parameter must specify:

-- For RTDs; "85" or "92" (for 100 ohm RTDs with 0.00385 or 

0.00392 ohms/ohm/°C temperature coefficients respectively)

-- For Thermistors; only "5000" (See previous note on page 113)

-- For CUSTom; only "1"

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The optional <range> parameter can be used to choose a fixed A/D 

range. When not specified (defaulted) or set to AUTO, the module 
uses auto-range.

At this point, the concept of the VT1422A Scan List will be introduced. As 
each algorithm is defined, the VT1422A places any reference to an analog 
input channel into the Scan List (this is in addition to those channels 
specified by the ROUT:SEQ:DEF command, see "Defining an Analog Input 
Scan List" on page 123). When the algorithms are run, the scan list tells the 
VT1422A which analog channels to scan during the Input Phase.

The [SENSe:]REFerence:CHANnels  (@<ref_chan>),(@<meas_ch_list>) 
is used to place the <ref_chan> channel in the scan list before the related 
thermocouple measuring channels in <meas_chan>. Now when analog 
channels are scanned, the VT1422A will include the reference channel in the 
scan list and will scan it before the specified thermocouples are scanned. 
The reference measurement will be stored in the Reference Temperature 
Register. The reference temperature value is applied to the thermocouple EU 
conversions for thermcouple channel measurements that follow.

The command sequence performs these functions:

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Configures reference temperature measurement on channel 15.

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Configures thermocouple measurements on channels 16 through 23.

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Instructs the VT1422A to add channel 15 to the Scan List and order 

channels so channel 15 will be scanned before channels 16 through 23.

SENS:REF THER, 5000, (@115)

SENS:FUNC:TEMP TC,J,(@116:123)

SENS:REF:CHAN (@115),(@116:123)