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Products => Test Equipment => Topic started by: madires on December 21, 2016, 01:54:06 pm

Title: Rigol DG4000: issue with output level of modulated signal
Post by: madires on December 21, 2016, 01:54:06 pm
If you're looking for a signal generator for RF stuff the following might be interesting to avoid buying the wrong tool:

https://www.youtube.com/watch?v=UlUUyydTXeY (https://www.youtube.com/watch?v=UlUUyydTXeY)
Title: Re: Rigol DG4000: issue with output level of modulated signal
Post by: Radio Tech on December 21, 2016, 11:36:05 pm
I agree. Mike was pretty unhappy with it. It has and  does all the functions But that output issue was strange.
Title: Re: Rigol DG4000: issue with output level of modulated signal
Post by: Orange on December 23, 2016, 10:38:57 am
My Rigol DG4102 does the same on AM modulation !

My Siglent SDG1062X does the same on AM modulation !

On my HP8657B I don't have this issue, but that is a real RF signal generator.

Moral of this story : Know your Test Equipment limitations
Title: Re: Rigol DG4000: issue with output level of modulated signal
Post by: Marc M. on December 24, 2016, 02:52:37 pm
Having done a 3+ year stint as a bench tech back in the heyday of CB, I have a lot of respect for Mike and his work. That said, I found it a little odd that he would purchase a function gen. to use as an RF generator :-//. It certainly shouldn't have the kind of error it does (which Rigol seems to be calling a feature  ::)), but I also wouldn't expect it to be a suitable replacement for an RF generator.  There's a reason RF generators are $$$$$$ and function generators are $$. Because of his unrealistic expectations, I feel his harsh criticism is a little unfair to Rigol.