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Signal behavior with function generator

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Martin72:
Hi,
Tried to recreate it with 1.5Khz and 10khz, manually setting via keypad (later via jogshuttle)...
Maybe the triggersetting is wrong, used "pulse" (pics) and "intervall".
When sweeping (on my 1062X), there are no issues to see.
Used internal AWG and 1062X.

2N3055:
SDG6000X 10kHz -> 50kHz and back..
And nice showcase of use of Qualified triggering....

mawyatt:
We took a look at our SDG2000X Plus and 6000X Plus. Started with 1Hz on the AWG and with scope sweep of 200ms/div, then manually switched AWG to 2Hz and screen captured the phase jump/reset to zero. Then did same for jump from 2Hz back to 1Hz manually.

First two screens are from SDG2000X Plus and last two from SDG6000X Plus, both AWGs "enhanced".

Seems these are always resetting to zero phase for a manually entered new frequency, to start the new frequency from phase zero, so phase is discontinuous with manual frequency changes.

Best,

Edit: This is somehow rearranging the entries :P

Now it's OK!!

mawyatt:
Another interesting result when the dial is quickly spun from 1Hz to 1.4Hz. Note how the phase resets to zero on each frequency update from the dial as it transitions from 1Hz to 1.4Hz.

First {27} is from SDG2000X Plus, second {28} from SDG6000X Plus.

Best,

2N3055:
I looked at what Martin and Mike has shown, and couldn't reproduce it.

Then I went and checked: In Utility/Phase mode I had it set for INDEPENDENT phase mode. It perfectly transitions from frequency to frequency without discontinuity.

But...
If I set it for DEPENDENT phase mode it resets phase every time , because it has to start both CH from same phase..... There is no other good simple way to keep phase relationship for different channels (with different frequency and waveform) but to reset from change. 

Thanks Mike for noticing "phase resets to zero on each frequency update" which made me look there...

Best,

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