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Products => Test Equipment => Topic started by: Circlotron on March 10, 2019, 08:26:49 am

Title: What sort of oscillator inside DG1022Z?
Post by: Circlotron on March 10, 2019, 08:26:49 am
I have a Rigol DG1022Z function generator and it’s quite good enough for everything I do. What I want to know is, what sort of frequency reference does it have. TXCO? Something fancier? Also, has someone done a teardown on one of these?
Title: Re: What sort of oscillator inside DG1022Z?
Post by: WhichEnt2 on March 10, 2019, 09:09:38 am
https://www.eevblog.com/forum/testgear/rigol-dg1032z-teardowns-(china-review)/ (https://www.eevblog.com/forum/testgear/rigol-dg1032z-teardowns-(china-review)/) Teardown of dg1032z.
Title: Re: What sort of oscillator inside DG1022Z?
Post by: bd139 on March 10, 2019, 10:04:35 am
I reckon it's a TCXO and it's very stable. I had mine driving my two OCXO equipped Racal counters and it didn't budge even 0.1Hz in over 3 hours.
Title: Re: What sort of oscillator inside DG1022Z?
Post by: David Hess on March 10, 2019, 05:39:11 pm
I have a Rigol DG1022Z function generator and it’s quite good enough for everything I do.

Do you need better stability or better phase noise?

The phase noise of DDS function generators tends to be very poor simply because it is considered unimportant in most applications which would use a function generator so steps are not taken to minimize it.  Stability only depends on the reference oscillator.
Title: Re: What sort of oscillator inside DG1022Z?
Post by: bd139 on March 10, 2019, 05:40:51 pm
Phase noise is exceptionally good on the DG1000Z series.

I’d assume stability for the OP.
Title: Re: What sort of oscillator inside DG1022Z?
Post by: Circlotron on March 10, 2019, 11:46:46 pm
I have a Rigol DG1022Z function generator and it’s quite good enough for everything I do.

Do you need better stability or better phase noise?
Neither.
I’m saying it’s okay as it it.
Just wanting to know what makes it tick, literally. 🙂