Cold-Junction Sensor Connection; Figure 3-3. Floating Signal Connection Referenced To Chassis Ground - DAQ VXI-SC-1000 User Manual

Chapter 3 Signal Connections
Floating
V
s
Signal
Make this connection to
ground reference the signal.

Cold-Junction Sensor Connection

Warning: Exceeding the overvoltage protection on the CJSENSOR input can damage
!
VXI-SC-1102 User Manual
CH0 +
CH0 -
+
-
CH1 +
CH1 -
CGND
Reference to
Chassis Ground

Figure 3-3. Floating Signal Connection Referenced to Chassis Ground

Pins A3 and A4 (CJSENSOR) connect the temperature sensor located
on the National Instruments VXI-TB Series terminal block to the
VXI-SC-1102. The CJSENSOR signal is measured relative to CGND.
Pins A3 and A4 are connected within the VXI-SC-1102 so the position
of the MTEMP/DTEMP switch on the VXI-TB Series terminal block
does not matter. The input is overvoltage-protected to 15 VDC with the
power on and off.
the VXI-SC-1102, the VXIbus, and the VXI-MIO board. National
Instruments is liable for any damages or injuries resulting from such
NOT
signal connections.
+
-
+
-
VXI-SC-1102
3-28 © National Instruments Corporation