Siglent Handheld Digital Oscilloscope - Page 1
Forum section: electronics / testgear

author: pascal_sweden
author_rank: Super Contributor
timestamp: May 20, 2015, 09:22:00 pm
content: 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?

author: tautech
author_rank: Super Contributor
timestamp: May 21, 2015, 03:33:05 am
content: 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=2Manuals and Datasheet:http://www.siglentamerica.com/prodcut-wd.aspx?id=93&tid=2&T=2

author: rf-loop
author_rank: Super Contributor
timestamp: May 21, 2015, 06:42:30 am
content: Quote from: pascal_sweden on May 20, 2015, 09:22:00 pmData sheet is very clear:QuoteAlso 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

author: pascal_sweden
author_rank: Super Contributor
timestamp: May 21, 2015, 09:30:26 am
content: 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.

author: tautech
author_rank: Super Contributor
timestamp: May 21, 2015, 12:24:23 pm
content: Quote from: pascal_sweden on May 21, 2015, 09:30:26 amThis is also the case with the Siglent SHS800 series.

author: CosPhi
author_rank: Regular Contributor
timestamp: May 21, 2015, 07:53:58 pm
content: I "still" have the SHS 1062 ...... I reported some Frimware issues herehttps://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-Contacthttp://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

author: Unknown
author_rank: Unknown
timestamp: May 21, 2015, 08:04:15 pm
content: Quote from: CosPhi on May 21, 2015, 07:53:58 pmI have asked someone at the factory to respond to your post.Regards,Steve

author: pascal_sweden
author_rank: Super Contributor
timestamp: May 21, 2015, 08:10:07 pm
content: 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?

author: CosPhi
author_rank: Regular Contributor
timestamp: May 21, 2015, 08:18:02 pm
content: 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

author: CosPhi
author_rank: Regular Contributor
timestamp: May 21, 2015, 08:35:56 pm
content: 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.