4
Temperature Sensor and Switch Configuration
To enable you to use thermocouples with VXI-SC submodules, the
VXI-TB-1303 terminal block has a thermistor temperature sensor for
cold-junction compensation.
You can connect the temperature sensor to a VXI-SC submodule in either
of two ways:
•
Multiplexed Temperature Sensor (MTEMP) mode—Set the
VXI-TB-1303 terminal block switch S1 to the MTEMP position.
This is the factory-default setting.
•
Direct Temperature Sensor (DTEMP) mode—Set the VXI-TB-1303
terminal block switch S1 to the DTEMP position. This mode
connects the temperature sensor to a separate DAQ channel via
your VXI-SC submodule. Refer to your VXI-SC submodule
documentation to configure your VXI-SC submodule for DTEMP
mode.
Table 1 shows the terminal block switch settings.
Table 1.
Switch S1 Settings
Switch S1 Position
Description
MTEMP
DTEMP
MTEMP mode selected; factory-default
setting; preferred mode and parking
position
MTEMP
DTEMP
DTEMP mode selected; connect to a
separate DAQ channel
Note:
On the VXI-SC-1102 submodule, the MTEMP and DTEMP modes are
equivalent.
