National Instruments SCC-TC Series User Manual

USER GUIDE
SCC-TC Series Thermocouple
Input Modules
Conventions
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The SCC-TC Series thermocouple input modules, SCC-TC01 and
SCC-TC02, accept input signals from B-, E-, J-, K-, N-, R-, S-, and T-type
thermocouples. The thermocouple inputs are filtered and passed into a
differential amplifier with a gain of 100. The output of the amplifier passes
through a dual-pole 2 Hz filter. Each module contains thermistor circuitry,
powered by a 2.5 V reference, to compensate for cold-junction effects.
Each module also can detect open thermocouple circuits.
Alternatively, you can connect voltage signals up to ±100 mV to the screw
terminals of the SCC-TC02 and use it as a low-bandwidth millivolt-input
module.
The following conventions are used in this guide:
Angle brackets that contain numbers separated by an ellipsis represent
a range of values associated with a bit or signal name—for example,
ai<0..7>.
The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash. When this symbol is marked on
the product, refer to the Read Me First: Safety and Radio-Frequency
Interference document, shipped with the product, for precautions to take.