Ni Pci-5421/5422 Cooling Considerations - National Instruments NI 5401 Getting Started Manual

5. Replace the PC cover.
6. Plug in and power on the PC.
7. (NI PCI-5421/5422 only) If available, verify that spread-spectrum
clocking is enabled in the PC BIOS. Refer to the PC user documentation
for information about how to verify this setting.
Caution
spread the timing clock signal over a small frequency range.
Disabling spread-spectrum clocking may affect the accuracy
of the NI PCI-5421/5422 specifications.

NI PCI-5421/5422 Cooling Considerations

Caution
guidelines in the Maintain Forced-Air Cooling Note to Users
included in the NI 5421/5422 kit to ensure that the device is cooled
effectively.
If the device temperature rises above the maximum operating temperature,
the device shuts down and MAX or NI-FGEN notifies you with an error
message. To re-enable the device after thermal shutdown, you must perform
a hard reset, using one of the following methods:
• Power off the chassis that contains the device.
• Call
niFgen_resetDevice
a device reset in MAX. For more information on resetting a device
in MAX, go to Help»Help Topics»NI-DAQmx»Measurement &
Automation Explorer Help for NI-DAQmx, which is available
within MAX.
Review the guidelines in the Maintain Forced-Air Cooling Note to Users
and make any necessary adjustments. The thermal shutdown error is reported
until the device is successfully reset.
NI Signal Generators Getting Started Guide
Spread-spectrum clocking varies the clock signal to
When installing the NI PCI-5421/5422, follow the
(niFgen Reset Device VI) or perform
10 ni.com