PXI 6682 synchronization with PXI 5441

[MarioPao]

Dear All,

I am trying to generate a UTC-GPS synchronized waveform (50 Hz) using the  Arb PXI 5441 with the PXI 6682. 

In particular, I would ask a solution that allows to solve the two following issues: 

a. 5441 10 MHz clock synchronization with the one of the 6682;

b. synchronization of the 5441 output with the 6682 GPS Pulse Per Second (e.g. for a 50 Hz waveform I could generate 50 20ms time period sines triggered by 50 PPS)

The hardware I am using follows:

1. PXI Chassis 1042Q
2. PXI PC-Controller 8110
3. PXI 6682 (GPS)
4. PXI 5441 (Arb 32 MB)

5. Software: LabView 9.0.1 (2009 SP1)

Many thanks in advance,

Best regards,

Mario 

[AlejandroZepeda]

Hi, Mario.

Please note that the PXI-6682 is not able to generate a 10MHz clock that is disciplined to GPS.  What you can do is have PXI_CLK10 driven by the PXI-6682's higher-stability 10MHz TCXO, but this 10MHz signal will be free-running, not disciplined to GPS.

Then you can set up the PXI-6682 to generate a 50Hz clock on a PXI_Trigger line or a PXI_Star line (I am not sure which the 5441 supports).  That 50Hz clock will be synchronized by GPS.

Another thing to note is that the PXI-6682 uses TAI (not GPS or UTC) as its timebase, so there is an offset of a few seconds.  There is more information about that here:

http://digital.ni.com/public.nsf/allkb/C5BBF6AC7036CDAA8625733000668351

Hope this helps.

AlejandroZ