Appendix A
Troubleshooting
NI CVS-1450 Series User Manual
A-4
ni.com
Cannot Drive Isolated Outputs
Verify that you have power connected to Viso and Ciso inputs on the
CVS-1450 device power connector and that the contact at the screw
terminals is solid. Because these outputs are electrically isolated from
the CVS-1450 device main supply, they require power in addition to the
CVS-1450 device main supply.
Runaway Startup Application
If a runaway startup application causes the CVS-1450 device to become
unresponsive, power off the CVS-1450 device and then restart it with either
the
NO APP
switch or the
SAFE MODE
switch in the
ON
position.
Restarting the CVS-1450 device with the
NO APP
switch enabled prevents
any VIs from running at startup. Restarting with the
SAFE MODE
switch
enabled starts the CVS-1450 device in Safe mode and does not launch the
embedded LabVIEW RT engine. Refer to the
section of
Chapter 3,
LEDs, DIP Switches, and Connectors
, for more information
about these DIP switches.
System Displays a
Missing
Operating
System
Error at Startup
The CVS-1450 device was powered on or reset with all DIP switches in the
ON
position. Set the DIP switches to the off position, and reset the
CVS-1450 device by pressing the
RESET
button for at least two seconds.
LED Error Indications
The CVS-1450 device indicates specific error conditions by flashing the
orange
STATUS
LED a specific number of times. Table A-1 describes the
STATUS
LED flashing sequences and the corresponding error condition.
