NI PXIe-8383mc Getting Started Guide
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© National Instruments
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7
This switch has no affect when SW3 is in DC mode.
SW5—CFC/SSC Clocking Mode Switch
When the board operates in daisy chain (DC) mode this switch determines the clocking mode
for the front panel cable port. NI recommends keeping this switch in the default SSC mode
unless otherwise specified. Regardless of the clock mode selected, the reference clock is
PCI Express Gen 2 specification compliant.
This switch has no affect when SW3 is in MC mode.
LED Indicators
The LEDs on the NI PXIe-8383mc give status information about power supplies, link state, and
mode of operation. Table 1 describes the function of the front panel LEDs.
FACT / USER Switch (Factory / User)
SW4
BAR No.
Size (bytes)
Address Space
Prefetchable?
FACT
BAR 5
32M
32-bit
Yes
USER
BAR 1
BAR 2
BAR4
BAR5
128M
64M
16M
32M
32-bit
64-bit
32-bit
32-bit
Yes
Yes
No
Yes
CFC / SSC Switch
SW5
CFC
100 MHz Constant Frequency Clock
SSC (Default)
100 MHz Spread Spectrum Clock with 0.5% downspread
Table 1.
Front Panel LED Status Descriptions of the NI PXIe-8383mc
LED
Color
Meaning
PWR/LINK
Off
Power is off
Blinking Red
Power is out of spec
Solid Amber
Power is on and within spec; an electrical link has not been
established with the front panel and/or the chassis backplane
Solid Green
Power is on and within spec; electrical links have been
established with both the front panel and backplane ports
MC
off
Daisy Chain mode
Solid Green
PXImc mode
