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Common Questions

My chassis worked fine until I inadvertently removed and reinserted a
module while the chassis was on. Now my chassis does not power on.
What can I do?

SCXI modules are not hot swapable, so you may have blown a fuse. Refer
to Chapter 2,

Configuring and Installing the SCXI Chassis

, for information

on fuse replacement. If replacing the fuse does not correct the problem, you
may have damaged the digital bus circuitry or the SCXI module. Please
contact NI Technical Support at

ni.com/support

for assistance.

My chassis power is on, my modules are configured for multiplexed
mode, and I am not getting good data. All the channels read the same
voltage even though I know I am putting different voltages into each
channel. What is causing this problem?

The SCXI chassis has backplane fuses. One or both of these fuses could be
blown. Refer to the

Replacing and Checking Backplane Fuses on the

SCXI-1000 and SCXI-1001

section of Chapter 2,

Configuring and

Installing the SCXI Chassis

, for fuse replacement information.

Can I programmatically detect whether or not my chassis is
powered on?

Not exactly. You can determine whether or not you can communicate with
configured modules through

SCXI_ModuleID_Read

in NI-DAQ or using

a LabVIEW VI that you can obtain from

ni.com/express

by entering the

info code

rdtscp

My chassis will not power on. What should I check?

Check the to make sure the power cord is attached and connected to a power
source. Look at the voltage selection tumbler above the power cord
receptacle and make sure it is set to the correct voltage. Make sure the
power switch is powered on. Verify that the main power fuse is good.