National Instruments NI cDAQTM-9138, User Manual

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Chapter 1 Getting Started with the cDAQ Chassis
CMOS Battery and CMOS Reset Button
The cDAQ chassis contains a CMOS battery, a lithium cell battery that stores the system clock
information when the chassis is powered off. There is only a slight drain on the CMOS battery
when power is applied to the cDAQ chassis power connector. The rate at which the CMOS
battery drains when power is disconnected depends on the ambient storage temperature. For
longer battery life, store the cDAQ chassis at a cooler temperature. Refer to the
CMOS Battery
section of the specifications document for your cDAQ chassis for the expected battery lifetime.
The
CMOS Battery Is Dead
warning appears onscreen during the power-on self test if the
battery is dead. The chassis still starts, but the system clock is reset to the date and time of the
BIOS release. The battery is not user replaceable. If you need to replace the CMOS battery,
contact National Instruments.
The CMOS reset button, shown in Figure 1-1, resets the CMOS and the cDAQ chassis BIOS
settings to factory default values. If the CMOS battery is dead, the CMOS reset button will not
work. Refer to the
Resetting the System CMOS and BIOS Settings section of Appendix A,
Controller Operating System and Configuration , for information about resetting the CMOS and
the BIOS settings to factory default values.
STATUS Red Continuously
flashing Hardware error—An internal power supply has
failed. Check front-panel I/O, CXM, and C Series
module connections for shorts. Remove any shorts
and power cycle the controller. If the problem
persists, contact National Instruments.
Solid Hardware error—The cDAQ chassis internal
temperature has exceeded a critical threshold.
Ensure that the ambient operating temperature does
not exceed the range specified in the
Environmental
section of the specifications document for your
cDAQ chassis. If the problem persists, contact
National Instruments.
— Off Normal operation.
USER1 Green/
yellow — This LED is controlled directly from your
LabVIEW RT application You can define the
USER1 LED to meet the needs of your application.
To define the LED, use the RT LEDs VI in
LabVIEW. For more information about the RT
LEDs VI, refer to the
LabVIEW Help .
Table 1-8. LED Indications (Continued)
LED
LED
Color LED State Indication