we use the 33511B function generator to generate pulse trains in burst mode. When changing pulse parameters (specifically pulse width and high-level), we consistently observe glitches in the resulting output waveform that depend on which parameter is changed:
- Changing pulse width, glitch is a 3.5ms long positive going rectangle, amplitude appears to be 1/2 of high level. Only present in burst mode.
- Changing pulse height (high-level), glitch first swings positive for a decreasing high-level and negative for increasing high-level. After upgrading the firmware to version 5.00 (released 2018-12-14), this changed to a +500mV, 0.5ms square, which then decays back to the baseline.
Before the firmware update, we had version "3.07-1.19-2.00-52-00".
These glitches appear regardless of whether the change is made through the front panel or remote interface.
Any chance you might fix these problems in an upcoming firmware?