National Instruments NI 1450 Series 用户手册
Appendix A
Troubleshooting
A-4
ni.com
POWER OK LED Is Not Lit When the NI 1450 is
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If the power supply is properly connected to the NI 1450, but the POWER
OK LED does not light up, check that the power supply is 24 VDC ±10%
and within the specifications outlined in Appendix B,
OK LED does not light up, check that the power supply is 24 VDC ±10%
and within the specifications outlined in Appendix B,
. Using
a power supply that is not within these specifications might result in an
unresponsive or unstable system and could damage the NI 1450.
unresponsive or unstable system and could damage the NI 1450.
Table A-1. STATUS LED Flashes and Corresponding Error Conditions
Number
of Flashes
Error Condition
0 (stays lit)
The NI 1450 has detected an internal error. Contact
National Instruments for assistance.
National Instruments for assistance.
1
The NI 1450 is unconfigured.
2
The NI 1450 has detected an error in its software. This
usually occurs when an attempt to upgrade the firmware
is interrupted. Repeat the firmware upgrade process.
usually occurs when an attempt to upgrade the firmware
is interrupted. Repeat the firmware upgrade process.
3
The NI 1450 is in Safe mode.
4 (or more)
The NI 1450 has detected an unrecoverable error.
Contact National Instruments for assistance.
Contact National Instruments for assistance.