Products > Test Equipment
Measuring Distortions with the Scope:What you see is not what you really have..
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Martin72:

--- Quote from: tautech on December 24, 2022, 07:13:05 pm ---
--- Quote from: Martin72 on December 24, 2022, 01:50:24 pm ---unfortunately the top of the tables are "cutting off" by the screenshot..

--- End quote ---
Save/Recall/Save PNG/Keep menus visible.  ;)

--- End quote ---

I know it but in the moment I´ve made the shots, it wasn´t set...Now it is.  ;)
tautech:

--- Quote from: electr_peter on December 24, 2022, 07:30:24 pm ---
--- Quote from: tautech on December 23, 2022, 10:58:24 pm ---
--- Quote from: electr_peter on December 23, 2022, 09:55:03 pm ---2) Try looking at jitter of CH1/CH2 vs SYNC. I think SDG2000X does not have jitter, but that would be interesting to know for sure.

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Are datasheets too hard to read ?  :-//
(Square wave) Jitter (rms), Cycle to cycle ...

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There is no harm in testing, isn't it? SDG1000X shows some significant cycle to cycle jitter on page 13 in PDF comparison linked above. Devil is in the details, AWGs have many modes, so testing helps to clarify things.
Cycle to cycle refers to CH1/CH2 output. Is it the same spec for SYNC?

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Okay sorry but you need become more familiar with your instrument as you can tune phasing for better channel edge alignment however it only allows for precise alignment at the tuned frequency and if you change frequency you will need to realign for precise phasing.
First we lock phasing then apply phase + corrections.
electr_peter:
@tautech, maybe CH1/CH2 in text was not clear enough, I meant single channel CCJ. As I understand, CCJ specs refers to a single channel. Relationship between CH1 and CH2 is a separate question (but both channels should have the same CCJ).

What I am asking it to check jitter between CH1 and SYNC output, as it is not directly mentioned in specs. In my experience, SDG2000X does not exhibit any issues in this area, but on SDG6000X thread there were some questions about this (maybe wrong test setup, I am not sure  :-//).
rf-loop:

--- Quote from: Roger Need on December 24, 2022, 06:09:13 pm ---Attached is a pdf document which compares the SDG1000x to SDG2000x.  One feature I like in the 2000x is that you can trim the internal 10 MHz. reference from the service menu using a software DAC control.  This gives much better synthesizer output frequency accuracy. 

Roger

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This comparison is obsolete and extremely poor -- today also partially false.

Years ago example SDG1000X series have get TrueArb function.
(2019-02-25 FW 1.01.01.33R1: Supported TrueArb: 2~16 kpts)
True arb jitter SDG1000X 300ps, SDG2000X 150ps

https://www.siglenteu.com//wp-content/uploads/dlm_uploads/2022/06/SDG1000X_DataSheet_DS0201X_E01I.pdf

Then also quite fun to see that square wave performance is not at all included in this ([www.batterfly.com] stamped) comparison what was "big" advantage in SDG1000X series after older SDG2000X series. If this is Siglent made comparison it looks like they somehow "compete with them selves". Sad there is not any datecode in this obsolete pdf.
(of course SDG2000X is better in many other things).

Btw, it is good question why it is so many times seen that some publications do not have any date and/or version with history (changelog).
 
SDG2000X series max is 25MHz (all models) and rise/fall 9ns
SDG1000X series max is 60MHz (32X 30MHz, 62X 60MHz) and rise/fall 4.2ns (3.8ns @1Vpp)

These are of course out from box. (for compare, factory specs are suitable and recommended to use)

Example my 1062X have 11.8ns pulse rise and fall time minimum. After Siglent it was 16,8ns and example max sweep time is now 100000s when it was 500s after factory (Because one day I needed slow 24 hour sweep so 100ks was nice number) and some other "tweaks".

Hexley:

--- Quote from: rf-loop on December 25, 2022, 10:06:50 am ---Btw, it is good question why it is so many times seen that some publications do not have any date and/or version with history (changelog).

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Agreed.

Which invites a comment on Siglent's own documentation -- I look forward to the day when  Siglent steps up to the next level of documentation standards for their products, not only including change logs but also having an index at the back, displaying chapter numbers in the footer, updating the manuals to keep them consistent with firmware changes, etc. 

Maybe 2023 will be the year for that. I can't wait.
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