Chapter 3
Signal Connections
SCXI-1102/B/C User Manual
3-6
©
National Instruments Corporation
Figure 3-3.
Floating Signal Connection Referenced to Chassis Ground
Cold-Junction Sensor Connection
Pins A3 and A4 (CJSENSOR) connect the temperature sensor located
on the SCXI-1300 or SCXI-1303 terminal blocks to the SCXI-1102/B/C
module. The CJSENSOR signal is measured relative to CGND. Pins A3
and A4 are connected within the SCXI-1102/B/C module so the
position of the MTEMP/DTEMP jumper on the SCXI-1300 or
SCXI-1303 does not matter. The input is overvoltage-protected to
15 VDC with power on and off.
Caution:
Exceeding the overvoltage protection on the CJSENSOR input can damage
the SCXI-1102/B/C module, the SCXIbus, and the DAQ device. National
Instruments is
NOT
liable for any damages or injuries resulting from such
signal connections.
V
s
-
+
Front Signal
Connector
+
-
+
-
SCXI - 1102/B/C
Referenced to
Chassis Ground
Floating
Signal
Make This Connection
to Ground Reference
the Signal
CH0+
CH0-
CH1+
CH1-
CGND
!