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PXI_TRIG <0..7> to 
PXI_TRIG <0..7> output skew
at NI PXIe-6672 backplane connector ... 5 ns, typical

Asynchronous delay, t

pd

PXI_TRIG <0..7> to 
PFI <0..5> output ............................ 15 to 22 ns, typical

Frequency............................................... 10 MHz

Initial accuracy ....................................... ±2.5 ppm

Long-term stability (1 year)

1

.................. ±1 ppm

Temperature stability (0 to 55 °C)

2

........ ±2 ppm

Frequency range ..................................... 1 Hz to 105 MHz

Frequency resolution.............................. < 0.075 Hz

Frequency accuracy................................ Equivalent to PXI_CLK10 

accuracy

3

Chassis requirement ............................... One 3U PXI Express

System Timing Slot

Front panel connectors ........................... SMB male, 50

Ω

Front panel indicators............................. Two tricolor LEDs 

(green, red, and amber)

1   

Includes stability of TCXO and supporting circuitry.

2   

Includes temperature stability of TCXO and supporting circuitry.

3   

The DDS frequency inherits the relative frequency of PXI_CLK10. For example, if you route the TCXO to PXI_CLK10, 
the DDS output inherits the same relative frequency accuracy as the TCXO output.