Specifications - National Instruments SCXI Serie Schnellstartanleitung

Can I programmatically detect whether or not my chassis is powered on?
You can determine whether or not you can communicate with configured modules. In NI-DAQmx, use
a LabVIEW VI that you can obtain from
All my channels float to a positive rail when I try to take a measurement. How do I correct the
problem?
Make sure that the signal reference settings for the DAQ device match the SCXI module. For example,
if the device is configured for NRSE, make sure that the cabled SCXI module shares the same
configuration. Matching configurations can require a change to the jumper setting of the module.
I am using one of the following modules—SCXI-1100, SCXI-1102/B/C, SCXI-1112, or
SCXI-1125—with one of the following terminal blocks—SCXI-1300, SCXI-1303, or
SCXI-1328—to measure temperature with a thermocouple. How do I stop the thermocouple
reading from fluctuating?
Average the temperature readings to minimize fluctuations. Also, ensure proper field wiring techniques.
Most thermocouples are floating signal sources with low common-mode voltage; they require a path for
bias currents from the SCXI module amplifier to ground. Make sure that you have grounded the negative
lead of each floating thermocouple through a resistor. Refer to the terminal block documentation for
impedance values. For grounded thermocouples, ensure that there is not a high common-mode voltage
present on the thermocouple ground reference.
Worldwide Technical Support
For additional support, refer to
for signal conditioning products, refer to the Technical Support Information document packaged with
your device.
National Instruments corporate headquarters is located at 11500 North Mopac Expressway, Austin,
Texas, 78759-3504. National Instruments also has offices located around the world to help address your
support needs.

Specifications

Safety
These products are designed to meet the requirements of the following standards of safety for electrical
equipment for measurement, control, and laboratory use:
• IEC 61010-1, EN-61010-1
• UL61010-1, CAN/CSA-C22.2 No. 61010-1
Note For UL and other safety certifications, refer to the product label or visit
ni.com/certification
in the Certification column.
SCXI Quick Start Guide
ni.com/express
or
ni.com/support ni.com/zone
, search by model number or product line, and click the appropriate link
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by typing .
rdtscp
. For further support information
ni.com