Connecting The Input Signals - National Instruments SCC-TC Series User Manual

Connecting the Input Signals

Note The signal names have changed. Refer to
confirm the signal names.
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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
.
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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.
The GND terminal connects to AI GND on the E Series DAQ device.
The SCC-TC0X has a 10 MΩ 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.
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