Robin-
Is this the example which is available with one of the LabVIEW PnP
Instrument Drivers? If so, which version of the instrument driver
are you using? There are drivers available on the NI Instrument
Driver Network for LabVIEW 6.0, 7.0, 8.0, as well as IVI Drivers.
If everything works fine when Highlight Execution is enabled, then I
suspect you are right in that a delay is needed in order to communicate
properly with the instrument. When you say that you tried a delay
sequence on the read, how did you implement the delay? If you
would like to pinpoint the location where a delay is needed, I would
recommend that you create a sequence structure, placing each subVI in a
different frame. You would then insert an extra frame with a
delay between each of the agn6700 subVIs.
Once you have a delay between each subVI, you can experimentally reduce
or eliminate the delays until you isolate the location where the delay
is actually needed.
Please post back here if you have any questions, and also to let us
know when you have resolved the issue so that others can benefit from
the information.