PXIE-5451 and PXIE-6571 synchronisation

[sagar7077bishwas]

Hi Team,

is there any way to synchronise PXIE-5451 FGEN and PXIE-6571 (NI-Digital) cards if the PXIE-1095 chassis does not have PXIE-6674T (timing synchronisation card)



Regards,

Sagar

[santo_13]

Absolutely, you can use the backplane triggers to route signals between both.

What is your sync need?

[sagar7077bishwas]

Hi Santo,
here sync i am referring is ,the reference clock for PXIe-5451 is 10MHZ PXI_CLK and for PXIe-6571 the master clock is 100Mhz PXIe_100Clk in-order to sync both instruments the reference clock of PXIE-5451 should refer 100MHz PXIe_100Clk to do so please suggest a work around.

The FGEN PXIe-5451 is generating a sine wave and the same is applied to ADC,the ADC output need to be captured with PXIe-6571 while post processing (ADC output) captured data for FFT ,spectral leakage is observed, to avoid spectral leakage sync need to done.

Regards,
Sagar

[santo_13]

In short, both 10MHz and 100MHz are derived from the same 10MHz reference source and hence phase locked. Please refer to the sample block diagram at System Reference Clock - NI

So, both your FGEN and 6571 are synchronized by their reference clocks. For ADC tests, you need to sync the start of FGEN with the 6571 capture as well using triggers.