SCXI Quick Start Guide 28 ni.com
• Make sure that each SCXI chassis connected to a single DAQ device
has a unique address.
• Make sure that the cable is securely connected to the chassis.
• Check for bent pins on the module, chassis backplane, and the device
connector.
• If you have multiple SCXI modules, remove all the modules and test
each module individually.
• If you are getting erroneous readings from the signal source,
disconnect the signal source and short-circuit the input channel to
ground. You should get a 0 V reading. Alternatively, connect a battery
or other known signal source to the input channel.
• Run an example program to see if you still get erroneous results.
Resources
Use the following resources if you have problems installing your SCXI
hardware and/or software:
• For troubleshooting instructions, refer to the Hardware Installation/
Configuration Troubleshooter at
ni.com/support/install.
• Refer to
ni.com/kb for documents on troubleshooting common
installation and programming problems and for answering frequently
asked questions about NI products.
• If you think you have damaged your device and need to return your
National Instruments hardware for repair or device calibration, refer to
ni.com/support and search on Sending a Board for Repair or
Calibration to learn how to begin the Return Merchandise
Authorization (RMA) process.
Frequently Asked Questions
My chassis is powered on, and my modules are configured for
multiplexed mode, but I am not getting good data on any channel.
What is causing this problem?
The SCXI chassis has backplane fuses, fused at 1.5 A on the SCXI-1000
chassis and at 4 A on the SCXI-1001 chassis. One or both of the fuses might
be blown.
On the SCXI-1600, you can check if the fuses are blown by looking at the
power LEDs. Both power LEDs on the SCXI-1600 and the LED on the
chassis must be lit. If any of the LEDs are not lit, one or both fuses are
blown.
On the SCXI-1000, the backplane fuses are located behind the fan. On the
SCXI-1001, the backplane fuses are located behind the right-hand fan, near
the power entry module, as viewed from the rear of the chassis.
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