Author Topic: SDG2042X - Triggering both channels at the same time in burst mode?  (Read 2408 times)

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Offline Plasmateur

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Quote from: edit
Functionality I need,

CH.1 to burst with X delay @ Y frequency with Z cycles/Burst period

CH.2 to burst with A delay @ B frequency with C cycles/Burst period

Both channels must trigger from the same external/manual trigger

Quote from: Update

Using the internal trigger it is possible to get very close to doing what I need this machine to do, however it is not optimal for my application as I need to be able to trigger both channels from external/manual.

For now, here's how to do it.

Set all the parameters as stated above in the edit quote -  CH.1(A,B,C) & CH.2(X,Y,Z)

Set burst period to something long, say several seconds. Both channels will trigger after some parameter is changed. If using 10Vpp on a particular channel, change it to 9.90Vpp and the unit will trigger. Alternatively this can be done by changing the frequency as well.

I also spoke with someone at Siglent, and they said they were working on it. They even asked if I was from eeVBlog....wow. Awesome!


I've looked at the manual for this signal generator and can't seem to find how it is possible to trigger CH.1 & CH.2 at the same time. I set both channels to manual, however only the select channel will burst when hitting the trigger button. What's most important is that I am able to trigger both of these channels at the same time from an external trigger, however I can only select one channel to be externally triggered.

Is there some sort of software update which allows this functionality or am I missing something?

I would also like to be able to eventually send a software trigger through LabVIEW to be able to trigger both of these channels at the same time.
« Last Edit: September 06, 2016, 11:17:55 pm by Plasmateur »
 

Online tautech

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #1 on: September 02, 2016, 12:41:55 am »
Latest manual:
http://www.siglentamerica.com/USA_website_2014/Documents/UserManual/SDG2000X_UserManual_UM0202X-E01C.pdf

P 88 SDG2000X User Manual
2.13 To Set Utility Function

CH Copy Coupling: Set the track, channel coupling or channel copy function.

So Channel coupling (copy) with Ext trigger should work, does it not?
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Offline Plasmateur

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #2 on: September 02, 2016, 12:50:21 am »
Yes, and thank you, however I should have been more clear.

I was able to get both channels to output at the same time from the manual trigger by using the channel track function, however I want to be able to pulse two different frequencies on separate channels at the same time. Using the track function I was unable to do this.
 

Online tautech

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #3 on: September 02, 2016, 01:12:40 am »
Yes, and thank you, however I should have been more clear.

I was able to get both channels to output at the same time from the manual trigger by using the channel track function, however I want to be able to pulse two different frequencies on separate channels at the same time. Using the track function I was unable to do this.
Another quick look at the manual and we see
2.11 To Set Burst Function
External Gated output.
P 74

Have a try with that.
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Offline Plasmateur

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #4 on: September 02, 2016, 02:39:22 am »
I starting playing around with the suggestion and I'm not sure if gating is going to meet my requirements. By sending a gated pulse to the external trigger, both channels will burst at the same time for the same length of time. What I need is the following,

CH.1 to burst with X delay @ Y frequency with Z cycles/Burst period

CH.2 to burst with A delay @ B frequency with C cycles/Burst period


It would be nice if could simply set up the parameters for each channel and trigger them off the event of rising edge or a manual trigger. Possibly a software trigger could do this or this could be programmed through SCIP commands?

 

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #5 on: September 02, 2016, 03:13:16 am »
You may be able to do what you need with EasyWave.  :-\

Yeah, just got a unit out and the trigger can only be set to 1 channel at a time. Period.

However an SCPI command or maybe Manual trigger to set Ch 1 away with the output Tee'ed feeding Ext Trigger and using that to trigger the start of Ch 2 might work.
You'll have to check propagation delays and timings and have the trigger and all that set correctly of course.
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Offline Plasmateur

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #6 on: September 02, 2016, 04:00:54 am »
Thank you for all your help.

I'll have to dig into programing. Probably should have talked to a Siglent applications engineer before purchasing this.
 

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #7 on: September 02, 2016, 04:55:34 am »
Thank you for all your help.

I'll have to dig into programing. Probably should have talked to a Siglent applications engineer before purchasing this.
I'll pop an email to Siglent USA and Scott or Steve should be able to offer local support.
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Offline Plasmateur

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #8 on: September 04, 2016, 03:06:40 am »
Awesome!

How should I go about communicating with them? Should I contact them as well, or do they reply to these type of threads?

Also I should probably apologize to the mods as I noticed this thread is dedicated to the SDG2042X:https://www.eevblog.com/forum/testgear/the-siglent-sdg2042x-thread/
perhaps this one could be merged if it should be in there?
 

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #9 on: September 04, 2016, 04:50:11 am »
Awesome!

How should I go about communicating with them? Should I contact them as well, or do they reply to these type of threads?

Also I should probably apologize to the mods as I noticed this thread is dedicated to the SDG2042X:https://www.eevblog.com/forum/testgear/the-siglent-sdg2042x-thread/
perhaps this one could be merged if it should be in there?
Steve has already copied me into an email he's sent to his techy Scott who should try to find a solution but that was late Friday so be patient.  ;)
I like to think that your problem might be encountered by others so if a remedy is found this thread may be found by others and not kept private. Helps all.  :)
As for the other thread; no worries, I've placed a post there with a link to this one just in case other owners come up with a novel solution for you.
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Offline Plasmateur

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Re: SDG2042X - Triggering both channels at the same time in burst mode?
« Reply #10 on: September 04, 2016, 05:36:16 am »
I'll be patient  ;D

A bit of an update from me. I'm attempting to trigger both channels by sending SCIP commands via LabVIEW with no success as of yet.

I'm remaining hopeful this machine can do what I need it to do. When I set the trigger on both channels to internal while they are in burst mode, both channels are triggered non-stop at some internal frequency and I see each frequencies from each channel with their respective cycles on my oscilloscope. Getting closer to what I need it to do!

I'm not really sure of what point is of triggering a channel via internal trigger while in burst mode. Why would someone want to do this?
 


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