siglent.freeforums.org

Support and information for Siglent electronic Test & Measurement equipments. (unofficial)
It is currently Mon, 26 Jun 17, 04:31

All times are UTC [ DST ]



Welcome
Welcome to siglent

You are currently viewing our boards as a guest, which gives you limited access to view most discussions and access our other features. By joining our free community, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content, and access many other special features. In addition, registered members also see less advertisements. Registration is fast, simple, and absolutely free, so please, join our community today!


Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: SDS1000X FW P06 wfm/s, segment/s, burst speed
PostPosted: Fri, 29 Apr 16, 18:02 
Offline
Site Admin

Joined: Sat, 30 Jun 12, 12:59
Posts: 369
Location: Finland
All together in this table.
(table corrected 27.Oct.2016. Ch1+Ch2 together segments/s table sample speed was wrong 1GSa/s. Right is 500MSa/s channel)


Note: Sequence mode segment/s speed table is now quarateed max speed instead of average maximum. Guaranteed max speed is speed where every trig leads to segment acquisition (not loosed events)

It is tested so that oscilloscope in Sequence mode. Trig normal, rising edge. Segment maximum amount with current t/div. Pulse generator generate narrow pulses in burst mode and amount of pulses in one burst is exactly same as amount of segment selected on scope. After then burst is manually trigged out. Watched that scope capture every segment (in this case this pulse).
Repeated test so that it is sure result was not lottery win.
Frequency (pulse interval) adjusted until scope do not loose any. This is important because when oscilloscope run, there may exist some small variations in trigger rearm time, perhaps due to scope other running processes.

If result is that it can capture guaranteed speed say example 24565 segment/s without any loose, result is then always rounded down to nearest step what is used in table. 100, 10 or 1 - so in this case to 24500. So that there is bit "tolerance margin."(Steps used: 50us, 100us/div step 10 and 200us - 1ms/div step 1, all other t/div step is 100.)

Note also wfm burst speeds and also this very unexpected low frequency "double pulse" test very fast trigger rearm. In some cases with natural signals in practice they may give some times small advantage for find some rare unwanted glitch etc. What ever but it is never bad thing to know and understand how test equipment work.

After every whole Sequence is captured, oscilloscope display whole one Sequence segments overlayed in display even if amount is 80000 segment in Sequence. With this new improvement it is more useful because now it can sure see if these is some anomalies in some segments, without need to go looking separate segments using History/segments viewer in stop mode.

Obsolete table removed. Not big any markable changes. But I have made new test and new table due to changes in FW. Look next message more new table. Also new table include SDS1000X+ when MSO option is in use.

_________________
Dogs barking, Siglent proceeds.


Top
 Profile  
 
 Post subject: Re: SDS1000X FW P06 wfm/s, segment/s, burst speed
PostPosted: Wed, 08 Feb 17, 14:15 
Offline
Site Admin

Joined: Sat, 30 Jun 12, 12:59
Posts: 369
Location: Finland
Here new retested and updated table.


Image

overall wfm/s speed is very good in this price class and much more if we look fast Sequence mode what have really unbeated speed in this oscilloscope class. Also waveform history buffer is totally unique in this class. It works also (with some limits) with Digital channels but at this time least one analog channel need be activated (no need use). If Digital channels stored in history buffer then history view can only manual search, player is not usable. I do not know if later FW change these limits.

Fast sequence mode is not available when Digital channels are active in use.

If 16 Digital channels in use alone without analog channels then maximum speed is around 830 wfm/s. (50 - 200ns/div)

If you wonder MSO (analog + digital channels in use) wfm/s speed it is also good to note that example:

Tektronix MSO4104:

2 ns/div_____130 wfm/s
20 ns/div____125 wfm/s
200 ns/div___125 wfm/s
2 µs/div_____125 wfm/s

LeCroy WR104Xi-MS500 30wfm/s

Of course in these much more expensive systems there is more LA features and functions witjhout any doupt. But, if we talk speed, Siglent is not at all bad.

_________________
Dogs barking, Siglent proceeds.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
 cron
Donate Now
Donate Now



Hosted by © 2017 FreeForums.org | Create a free forum | Powered by phpBB
About FreeForums | Legal | Advertise Here | Investors | Contact FreeForums.org
Report Violation

subSilver+ theme by Canver Software, sponsor Sanal Modifiye
suspicion-preferred