©
National Instruments Corporation
5
SCC-TC Series Thermocouple Input Modules User Guide
Connecting the Input Signals
Note
The signal names have changed. Refer to
ni.com/info
and enter
rdtntg
to
confirm the signal names.
The SCC-TC01 has a two-prong uncompensated thermocouple
miniconnector that accepts any miniature or subminiature two-prong
male thermocouple connector. The SCC-TC02 has a three-position
screw-terminal connector that accepts 28 to 16 AWG thermocouple wires.
The screw-terminal connector provides a ground connection for shielded
thermocouples. Otherwise, the two modules function identically.
To use an SCC-TC01, plug the male thermocouple connector into the
module.
The SCC-TC02 accepts up to three signals: TC
+
, TC–, and GND. TC
+
is
the positive thermocouple lead and TC– is the negative thermocouple lead.
1
The GND terminal connects to AI GND on the E Series DAQ device.
The SCC-TC0
X
has a 10 M
Ω
bias resistor connected from the negative
thermocouple input to ground. This resistor allows the thermocouple to be
ground-referenced or floating without requiring external bias resistors
connected to ground.
1
For ANSI color-coded J-type thermocouples, the red wire is negative and the white wire is positive. Refer to the thermocouple
data sheet if possible. You can find information about other color-coding schemes in the NI KnowledgeBase at
ni.com/
support
.
