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Signal
CLKIN
CLKOUT
PFI or PFI_LVDS Programmable Function Interface which can be individually configured
Caution
signals on the PXIe-6674 can damage the module and the computer. NI is not liable
for any damage resulting from such signal connections.
Color
Off
Module is not yet functional.
Green
Driver has initiated the module.
Amber
Module is being accessed. The Access LED flashes amber for 50 ms when the
module is accessed.
Blinking Red Module has detected an over-temperature condition.
Solid Red
A hardware error has been detected.
Caution
an over-temperature condition. Continued use of the PXIe-6674 in this condition is
not recommended as product reliability may become compromised. Since several
common problems can cause an over-temperature condition, please investigate the
following:
•
Check that all chassis covers, filler panels, and/or slot blockers are installed.
•
Make sure that the chassis fan speed is set to the highest setting.
•
If applicable, check that the chassis fan air intake is not blocked and that the fan
filters are clean.
•
Make sure that the ambient temperature around the chassis isn't above the rated
temperature specifications. If so, move the chassis to a cooler ambient
temperature location.
Table 1. Signal Descriptions
AC coupled, 50 Ω clock input. CLKIN can be routed to the FPGA for use
as a synchronization clock.
AC coupled clock output. CLKOUT can be sourced from the PXI-
CLK10, Clock Generation, or from the PXIe_DSTARA line.
for either single ended operation or LVDS operation. In LVDS mode, the
connectors are paired and can be programmatically set as either inputs or
outputs, but not both simultaneously.
Connections that exceed any of the maximum ratings of input or output
Table 2. Access LED
If the Access LED is observed to be blinking red, the module has detected
Description
Status
PXIe-6674 User Manual | © National Instruments | 9
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