National Instruments NI 5422 사용자 설명서

Clock Source

Internal sample clocks can either be locked to a Reference 
Clock using a phase-locked loop or be derived from the 
onboard VCXO frequency reference.

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Frequency 
Accuracy

±25 ppm

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Sources

1. PXI_CLK10 (backplane connector)

2. CLK IN (SMB front panel connector)

The PLL 
Reference Clock 
provides the 
reference 
frequency for the 
phase-locked 
loop.

Frequency 
Accuracy

When using the PLL, the Frequency Accuracy of the 
NI 5422 is solely dependent on the Frequency Accuracy 
of the PLL Reference Clock Source.

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Lock Time

≤200 ms

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Frequency 
Range

5 MHz to 20 MHz in increments of 1 MHz.
Default of 10 MHz.

The PLL Reference Clock Frequency has to be accurate 
to ±50 ppm.

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Duty Cycle 
Range

40% to 60%

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Exported PLL 
Reference 
Clock 
Destinations

1. PFI<0..1> (SMB front panel connectors)

2. PXI_Trig<0..6> (backplane connector)

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