16 ch simultaneously sampling with to two pxie 5170r

[meh1011]

hello
I want 16 ch simultaneously sampling with to two pxie 5170r and timing card PXIe-6674T

i set Data clock rate for both 5170R on external clock which handled by timing card, both of them are connected with DstarA Bus to timing card, timing card generate a 250MHz clock rate and route on DstarA for both of them.
But when i run the program they aren't sync. I saw that for different Run, the phase difference between 2 card changed.

two card are sampling a sinusoid signal
I trig sampling with a pulse that cables have same length
is there any more configuration for synchronization ?

[AgentAstronaut]

Hi Meh1011,

Do you mind posting you code? I think it will be helpful instead of asking a bunch of questions about how your code is configured.

What method are you using to determine whether the signals are synchronized or not?

Cheers,

Michael

[meh1011]

yes of course, I'll send picture of first part that related to ADC & synchronization.

and for determining whether they are sync or not, I just run the program and then picking up a few  samples after receiving trig pulse.

the following pic is same for both card