Siglent Handheld Digital Oscilloscope

[pascal_sweden]

Does the SHS1102 have two completely isolated input channels?

Do both input channels have completely isolated and independent negative reference or are they common and connected together internally?

Anybody out here who has this unit, and can share some experience?

[tautech]

Isolated channel scopes by definition have isolated references from each other.
I've not tested the Gnd for the charging jack for isolation though.
I've only got the SHS810, so any tests I do might not be a correct answer.
One would wonder if anybody is silly enough to need the isolation and leave the unit connected to a charger.

http://www.siglentamerica.com/pdxx.aspx?id=93&T=2&tid=2
Manuals and Datasheet:
http://www.siglentamerica.com/prodcut-wd.aspx?id=93&tid=2&T=2

[rf-loop]

Does the SHS1102 have two completely isolated input channels?

Do both input channels have completely isolated and independent negative reference or are they common and connected together internally?

Anybody out here who has this unit, and can share some experience?

Data sheet is very clear:

SHS1000 Series with patent IsolatedChannel technology provide isolation from ground and isolation between channels

CATII1000V and CATIII600V between two channels references?between channels reference and earth ground

Also it is explained in this pdf:

"What are the differences between SIGLENT’s SHS800 and SHS1000 series of handheld oscilloscopes?"

http://siglentamerica.com/Uploadfile/file/20140926/What%20are%20the%20differences%20between%20SIGLENT%E2%80%99s%20SHS800%20and%20SHS1000%20series%20of%20handheld%20oscilloscopes.pdf

[pascal_sweden]

Thanks for the explanation and the document. Exactly what I was looking for.
For now I will stay with my Pintek differential probe.

Note that I asked this question, because there is an OWON handheld digital oscilloscope where the input channels are isolated from ground, but the reference is common between the two input channels.

[tautech]

Note that I asked this question, because there is an OWON handheld digital oscilloscope where the input channels are isolated from ground, but the reference is common between the two input channels.

This is also the case with the Siglent SHS800 series.

[CosPhi]

I "still" have the SHS 1062 ...

... I reported some Frimware issues here https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg579658/#msg579658

... they made a new Firmware "3.01.02.02R2" ... I think the only thing they changed was the version number ...

So, the scope is still just in short memory usable (10K). The long memory (2M) still does not work in any usefull way.

Just in short memory the scope works well so far ... also at least 4 or 5 hours on battery.

The recorder functions also work, sadly I any of them you can zoom in later. But you can save up to 2700 ("unzoomable") single shots in recorder mode. While the functions works well ... sadly you just can save 1 channel. But at least you can trigger on the other channel.

The probes supplyed with the SHS1000 series are Isoprobes from Multi-Contact http://www.multi-contact.com/products/hfline/1. They are the "original" Fluke, Agilent Handheld and Chauvin Arnoux probes. So you can get easy (not cheap) add ons for these probes.

Hope I could help ...

I have mine now a while ... I guess it is slowly time to cut the warranty seal and make a teardown

[Siglent America]

I "still" have the SHS 1062 ...

... I reported some Frimware issues here https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg579658/#msg579658

... they made a new Firmware "3.01.02.02R2" ... I think the only thing they changed was the version number ...

So, the scope is still just in short memory usable (10K). The long memory (2M) still does not work in any usefull way.

Just in short memory the scope works well so far ... also at least 4 or 5 hours on battery.

The recorder functions also work, sadly I any of them you can zoom in later. But you can save up to 2700 ("unzoomable") single shots in recorder mode. While the functions works well ... sadly you just can save 1 channel. But at least you can trigger on the other channel.

The probes supplyed with the SHS1000 series are Isoprobes from Multi-Contact http://www.multi-contact.com/products/hfline/1. They are the "original" Fluke, Agilent Handheld and Chauvin Arnoux probes. So you can get easy (not cheap) add ons for these probes.

Hope I could help ...

I have mine now a while ... I guess it is slowly time to cut the warranty seal and make a teardown

I have asked someone at the factory to respond to your post.
Regards,
Steve

[pascal_sweden]

To the poster who has the SHS 1062 unit.
Can you test if the reference becomes ground when the power adapter is connected to the scope?

[CosPhi]

Uh that would be great ... because I'm looking for another scope with more (really usable) memory. 10K is often just not enough ... allready 50K or 100K would help me much. I mostly use it with a current clamp for motor start sequences and machine cycle testing. Of course I have access to other scopes/logger to do this job, but is very handy when the scope is allways with me (the best tools don't help you anything if you can't use them because they are far away ...)

Back to the initial question ... yes of course the two channels are complete isolated.

I don't have to test it ... if it would (go to ground) I would have made allready many shorts 

[CosPhi]

Here is a picture from just quick now. I hooked the two channels inverted on 230V while it is loading. The powersupply has no ground, so it can't go to ground anyway.