Dear forum members,
I need to use the 81150A to generate a ramp on one channel and an arbitrary waveform on the other channel. The two channels run in continuous trigger mode. I also need to synchronize or phase lock the two channels so that they starts at exactly same time (meaning for example the trigger outputs of the two channels should be synchronized). There is a coupling mode, where this requirement is possible, but it always put the two channels into a same function (like both must run in ramp function, or in Arb function). How can I still get the phases locked, and 2 different functions?
Another question: The Arb waveform interpolation works well with buttons on the front panel. But there seems to be no way to turn it on with external programming. I tried the :DIG:TRAN: INT command but it does not work (may be because it is for Pattern function only, and not for Arb function). The interpolation is off by default in my 81150A. Can you suggest a way to turn in on by programming? Or is there a firmware update which includes this feature?
Thanks a lot for your help,
BR Anh
Hello Anh,
Thanks for your questions!
When reading through the 81150A user guide I found the following details on Page 123 regarding the Channel Coupling behavior of the instrument.
This indicates that using this mode parameters like burst, sweep, and modulation are kept identical on both channels.
I also found a statement on page 248 from section "3.14.1 Creating and Storing an Arbitrary Waveform" that says the interpolation method is only available from the front panel.
The SCPI command to select interpolation method is only listed in Section "3.5.7 Creating, Editing and Storing a Bitshape".
-Lukas