Error 250043 synchronizing 2 5663 RFSAs and 1 5673 RFSG with Tclk

[beck.278]

Hello everyone,

(I'm posting here in addition to the signal generator board, since it is not very active and this applies to RF hardware specifically)

We are trying to use our 5673e RFSG to produce white noise for input into an amplifier to characterize it.  We will the read the output of the amp using 2 5663 RFSA's located in the same PXI chassis.  I want everything to be synchronized, and the Tclk VI's seem to do the trick.  We can run the "RFSA syncronization with Tclk and RFSG" example VI with no problems.  However, the only thing I tried to add in my own code was to configure TWO RFSA's to synch up with the RFSG using Tclk. The "niTclk Configure for Homogeneous Triggers" VI keeps giving the following error:

Code: -250043

niTClk Configure For Homogeneous Triggers.vi:2010001<append>
<B>Session index (starts at zero): </B>0
<B>Error reported by the instrument driver: </B>

The LO returned the following error:

The session handle is not valid.
Status Code: -223587

I'm attaching a code snippet below.  I can't figure out why this is occurring since all I'm doing different from the examples is adding another RFSA to synch up.  Any help is much appreciated!

-Brian

(I'm posting here in addition to the signal generator board, since it is not very active and this applies to RF hardware specifically)

[beck.278]

Hello everyone,

(I'm posting here in addition to the signal generator board, since it is not very active and this applies to RF hardware specifically)

We are trying to use our 5673e RFSG to produce white noise for input into an amplifier to characterize it.  We will the read the output of the amp using 2 5663 RFSA's located in the same PXI chassis.  I want everything to be synchronized, and the Tclk VI's seem to do the trick.  We can run the "RFSA syncronization with Tclk and RFSG" example VI with no problems.  However, the only thing I tried to add in my own code was to configure TWO RFSA's to synch up with the RFSG using Tclk. The "niTclk Configure for Homogeneous Triggers" VI keeps giving the following error:

Code: -250043

niTClk Configure For Homogeneous Triggers.vi:2010001<append>
<B>Session index (starts at zero): </B>0
<B>Error reported by the instrument driver: </B>

The LO returned the following error:

The session handle is not valid.
Status Code: -223587

I'm attaching a code snippet below.  I can't figure out why this is occurring since all I'm doing different from the examples is adding another RFSA to synch up.  Any help is much appreciated!

-Brian

(I'm posting here in addition to the signal generator board, since it is not very active and this applies to RF hardware specifically)

[beck.278]

Sorry here is the code snippet...

[USBarnes]

Brian,

Have you tried sharing clocks and LO's through the front panel connections on these devices? Here's a KnowledgeBase article that talks about synchronizing a 5663 with a 5673. Hope this helps!

How to Synchronize the NI 5663E and NI 5673E

[beck.278]

Thank you for the response.  I have not tried this actually.  Ideally we want to use our atomic clock (an external device) and input its 10MHz reference signal into the PXI chassis through the port on the back of the device.  Thus, all our radio hardware could use the PXI_CLK as its reference signal.  Is this not the best option?

Also, I have discovered through further testing that I'm getting the exact same error when running the "RFSA synchronization (Tclk, shared LO and reference clock, and continuous acquisition)" example VI.  Thus, I don't think there is a problem with my code, but some configuration is messed up somewhere.  For some reason the Tclk VI's dont' want to let me synch up multiple RFSA 5663 devices (we have 4 in the chassis).