AnsweredAssumed Answered

modulation phase on E8267D

Question asked by jeremyhanna on Dec 28, 2012
Latest reply on Jan 25, 2013 by tabbott
I'm using a 81180A AWG to create arbitrary I and Q at 1 GHz.  These are input to the wideband I and Q inputs on the E8267D.  I see no way to trigger the modulation on the 8267, so the LO and modulation is on, then I trigger the 81180 to send the ~ 2 microsecond waveform.  My problem is, shot to shot the phase between the 1 GHz waveform and 7 GHz carrier vary by Pi/4.  Is there some way to sync the 81180 and the 8267 so that the modulation always starts at the same point on the carrier wave?
Thanks in advance.