VXi VT1422A 사용자 설명서

Using either the Screw Terminal or Spring Terminal Modules, 
thermocouples and the thermocouple reference temperature sensor can be 
wired to any of the VT1422A's channels. When the scan list is executed, one 
must ensure that the reference temperature sensor is specified in the channel 
sequence before any of the associated thermocouple channels.

External wiring and connections to the VT1422A are made using Terminal 
Modules (see Figures 2-4 through 2-6).

The isothermal reference temperature measurement made by a VT1422A 
applies only to thermocouple measurements made by that instrument.
In systems with multiple VT1422As, each instrument must make its own 
reference measurements. The reference measurement made by one 
VT1422A cannot be used to compensate thermocouple measurements 
made by another VT1422A. 

To make good low-noise measurements, shielded wiring must be used from 
the device under test to the Terminal Module at the VT1422A. The shield 
must be continuous through any wiring panels or isothermal reference 
connector blocks and must be grounded at a single point to prevent ground 
loops. See "Preferred Measurement Connections" later in this section and 
“Wiring and Noise Reduction Methods” on page 483.