I am using 5412 Arbitrary Waveform
Generator (AWG) to produce a waveform. The output of the AWG is
connected to the input of the 5122 Digitizer for control purposes. Both
AWG and Digitizer are in the same PXI chassis and are started by the same trigger produced by a timing card in that PXI chassis.
The problem is that AWG always starts
~40 waveform samples after the start of the Digitizer according to the
waveform the Digitizer acquires.
If,
for example, AWG generates new waveform sample each 1 micro second than
AWG starts generating waveform ~40 micro seconds after the start of the Digitizer. If AWG produces waveform points each 100 micro seconds than
it starts ~40*100 = 4000 micro seconds after the start of the Digitizer.
I tried different output rates and
different number of waveform samples but still AWG lacks the same 40
waveform samples.
What can the possible reasons for such a behavior be?
