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Products => Test Equipment => Topic started by: sdouble on August 15, 2020, 07:26:56 am

Title: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: sdouble on August 15, 2020, 07:26:56 am
Hi folks,
I am in the need of a couple of scopes in the next months.
Only analog stuff. 300 MHz at least. low signal in the mV range most of the time.
AWG is needed, basic spectrum analyzer is a plus.
I am not fighting to save a few hundreds bucks.
What do you guys suggest ?
cheers
Title: Re: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: jemangedeslolos on August 15, 2020, 08:38:08 am
Hello,

The SDS2000X+ seems to have a much lower frontend noise so it will be a much better choice for your needs.
Title: Re: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: 2N3055 on August 15, 2020, 09:26:25 am
What kind of analog stuff at 300MHz+ in mV range??

Maybe you need SA?
Title: Re: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: sdouble on August 15, 2020, 09:37:21 am
I typically look at charge sensitive preamplifier or transimpedance amplifier outputs. typical analog bandwidth is 50-100 MHz. Also usual [20Hz; 20 Mhz] integrated noise is in the 0.5 mV RMS ballpark.
I already have reasonnable spectrum analyzers.
Title: Re: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: sdouble on August 15, 2020, 09:38:14 am
Quote from: jemangedeslolos on August 15, 2020, 08:38:08 am
Hello,

The SDS2000X+ seems to have a much lower frontend noise so it will be a much better choice for your needs.
thx for the tip. I did not know that.
Title: Re: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: 2N3055 on August 15, 2020, 09:53:29 am
Quote from: sdouble on August 15, 2020, 09:37:21 am
I typically look at charge sensitive preamplifier or transimpedance amplifier outputs. typical analog bandwidth is 50-100 MHz. Also usual [20Hz; 20 Mhz] integrated noise is in the 0.5 mV RMS ballpark.
I already have reasonnable spectrum analyzers.
Thanks.
In that case 2000x+ is much better.. it also have 10 bit mode that is 100 MHz limited. Noise is respectably low too.
Title: Re: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: Vestom on August 15, 2020, 02:42:36 pm
The SDS2000X+ has a pretty good front-end. Noise is specified to be below 80uV RMS and in 10 bit mode the resolution is down to ~33uV/bit. Even though the sampling rate is only 2GS/s the scope can dither the sample time for a much higher equivalent sample rate making the 500MHz max bandwidth quite usable.

Though be aware, that the AWG is a bit basic...

I don't regret choosing the Siglent over the Rigol  ;D
Title: Re: hackable scope choice : Rigol MSO5074 or SDS2000X+ or ?
Post by: sdouble on August 15, 2020, 04:31:22 pm
Cool, this is really helpful !
thx
Quote from: Vestom on August 15, 2020, 02:42:36 pm
The SDS2000X+ has a pretty good front-end. Noise is specified to be below 80uV RMS and in 10 bit mode the resolution is down to ~33uV/bit. Even though the sampling rate is only 2GS/s the scope can dither the sample time for a much higher equivalent sample rate making the 500MHz max bandwidth quite usable.

Though be aware, that the AWG is a bit basic...

I don't regret choosing the Siglent over the Rigol  ;D