Author Topic: The Siglent SDG2042X Thread  (Read 273879 times)

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Offline JDubU

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Re: The Siglent SDG2042X Thread
« Reply #1175 on: September 15, 2019, 09:29:14 pm »
Is that also true of AM radio transmission?
 

Offline rf-loop

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Re: The Siglent SDG2042X Thread
« Reply #1176 on: September 15, 2019, 09:32:27 pm »
FW: 2.01.01.35R3B1
Quote
1. Changed the amplitude strategy of AM modulation: The carrier stays fixed at the amplitude, regardless of the modulation setting.

Finally, after many years,  this small but important improvement.
No more confusion between using the conventional RF generator and sometimes using the SDG2000X for similar things with  carrier alone (CW) or AM mod carrier.

Carrier level is now what you set and it keep this carrier level when user turn AM mod on/off and independent of modulation depth. Now it works just like conventional RF generator  :-+

(SDG1000X get this improvement around year ago)

Sorry, but I don't understand: AM means Amplitude Modulation, right? How can it be kept at a given level?
I've downloaded the new release and the output signal amplitude is varying as expected with the modulation depth, from the initial level up to 120% of this level (eg. from 1Vpp to 2.4Vpp). Can you please explain what is the difference between the previous strategy and the new one? Thanks

If you look AM in frequency domain, using example spectrum analyzer you see this meaning of course.

Lets take example.

We set generator to produce 1MHz carrier without AM modulation, just pure sine. We set this carrier level say example 0dBm (50ohm system)  and we can see level is 0dBm if we look it with frequency domain - spectrum analyzer. (or time domain - oscilloscope we can see constant 0dBm level sinewave)

Then we turn AM modulation on without touching level:

Old FW, When turn AM on carrier drop 6dB (independent of modualtion depth)

Try with conventinal RF generator. Turn AM on and off. Carrier level stay constant.

New FirmWare (works now like conventional RF generator):
Turn AM on and off, carrier level stay constant and just as level was set..

Say example 1MHz carrier AM modulated with 1kHz sinewave and modulation depth 100%.
In real world there is now 0dBm 1MHz carrier and -6dBm 999kHz LSB tone and -6dBm 1001kHz USB tone.
If look with spectrum analyzer it is just what is show.

In old FW when select AM modulation, output peak level what was displayed/adjusted using SDG level setting.  It was right only for signal peaks when mod depth was 100%. With all other modulation depths level setting was wrong. It was not peak level and not carrier level and not sidetones level (zero true).
In new FW level set have one true. It is always carrier level. As it is also when AM is on or off.



Ok, now we drop modulation depth. Say example to 10%. Now we can see 1MHz carrier, level 0dBm and these sidetones levels dropped to -26dBm.

Then turn AM on and off. Spectrum analyzer show carrier stay always 0dBm and AM on there is sidetones and AM off, only carrier.
When look time domain, oscilloscope, AM on, there is bit over carrier peaks and bit under carrier lows and AM off, constant level carrier)

This may help for understand AM modulation (levels). http://hpmemoryproject.org/an/pdf/an_150-1a.pdf  and there chapter 2.




If practice and theory is not equal it tells that used application of theory  is wrong or the theory itself is wrong.
It is much easier to think an apple fall to the ground than to think that the earth and the apple will begin to move toward each other and collide.
 
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Offline rf-loop

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Re: The Siglent SDG2042X Thread
« Reply #1177 on: September 15, 2019, 09:40:19 pm »
Is that also true of AM radio transmission?

This AM modulation math is same inside wire transmission and (radio) wireless transmission.  ;)
If practice and theory is not equal it tells that used application of theory  is wrong or the theory itself is wrong.
It is much easier to think an apple fall to the ground than to think that the earth and the apple will begin to move toward each other and collide.
 

Offline bicycleguy

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Re: The Siglent SDG2042X Thread
« Reply #1178 on: September 17, 2019, 10:03:52 pm »
Was anyone else notified of this update?  I thought I filled out all the warranty stuff ect. but never get notices of firmware updates.

Looks like a great update tho
 

Offline NoisyBoy

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Re: The Siglent SDG2042X Thread
« Reply #1179 on: September 17, 2019, 11:57:32 pm »
There is no notification, in fact, I don't even believe there's a warranty registration.  At least I have never seen one on the website.

In reviewing the update date for the prior versions, and the recent update on the SDG1000X firmware, I figured something must be on the way.  So I was checking the firmware page periodically, that's how I came across the update a week ago.  The first thing I did was to share it with the community, so we can all benefit from the updates. 

That's one difference between the Chinese brands and the top tier brands, you get what you pay for.  I can log onto Infoline on Keysight to see every piece of equipment I bought from them, the warranty, warranty period, cal certificates, repair records/status, service and safety notes, and all software/firmware/documentation specific to my unit.  It is very nice for a hobby lab like mine, and I can understand the value for a large professional lab with hundreds or thousands of pieces of equipment. 
 

Offline tautech

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Re: The Siglent SDG2042X Thread
« Reply #1180 on: September 18, 2019, 12:58:51 am »
There is no notification, in fact, I don't even believe there's a warranty registration.  At least I have never seen one on the website.

In reviewing the update date for the prior versions, and the recent update on the SDG1000X firmware, I figured something must be on the way.  So I was checking the firmware page periodically, that's how I came across the update a week ago.  The first thing I did was to share it with the community, so we can all benefit from the updates. 

That's one difference between the Chinese brands and the top tier brands, you get what you pay for.  I can log onto Infoline on Keysight to see every piece of equipment I bought from them, the warranty, warranty period, cal certificates, repair records/status, service and safety notes, and all software/firmware/documentation specific to my unit.  It is very nice for a hobby lab like mine, and I can understand the value for a large professional lab with hundreds or thousands of pieces of equipment.
Things are a changing !
https://int.siglent.com/support/
Create an account and register your products.

Did once in the early days and all the spam I ever get is a mail when a new product guide is released.
Avid Rabid Hobbyist
 

Offline n3mmr

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Re: The Siglent SDG2042X Thread
« Reply #1181 on: September 18, 2019, 09:17:34 am »
There is no notification, in fact, I don't even believe there's a warranty registration.  At least I have never seen one on the website.

In reviewing the update date for the prior versions, and the recent update on the SDG1000X firmware, I figured something must be on the way.  So I was checking the firmware page periodically, that's how I came across the update a week ago.  The first thing I did was to share it with the community, so we can all benefit from the updates. 

That's one difference between the Chinese brands and the top tier brands, you get what you pay for.  I can log onto Infoline on Keysight to see every piece of equipment I bought from them, the warranty, warranty period, cal certificates, repair records/status, service and safety notes, and all software/firmware/documentation specific to my unit.  It is very nice for a hobby lab like mine, and I can understand the value for a large professional lab with hundreds or thousands of pieces of equipment.
Things are a changing !
https://int.siglent.com/support/
Create an account and register your products.

Did once in the early days and all the spam I ever get is a mail when a new product guide is released.

Just tried that: no luck!
I registered, logged in and started by attempting to register my sds1104x-e.

Had the following error return:

"Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing WSDL: Couldn't load from 'http://219.133.80.90:8090/DYWebServer/DYWebServer.asmx?wsdl' : failed to load external entity "http://219.133.80.90:8090/DYWebServer/DYWebServer.asmx?wsdl" in /home/intsiglent/public_html/member/module/product-registration.php:32 Stack trace: #0 /home/intsiglent/public_html/member/module/product-registration.php(32): SoapClient->SoapClient('http://219.133....') #1 /home/intsiglent/public_html/member/index.php(26): include('/home/intsiglen...') #2 /home/intsiglent/public_html/account.php(3): include('/home/intsiglen...') #3 {main} thrown in /home/intsiglent/public_html/member/module/product-registration.php on line 32"

I'm in Sweden, if that could be part of the problem.
 
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Offline n3mmr

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Re: The Siglent SDG2042X Thread
« Reply #1182 on: September 18, 2019, 11:17:55 am »
There is no notification, in fact, I don't even believe there's a warranty registration.  At least I have never seen one on the website.

In reviewing the update date for the prior versions, and the recent update on the SDG1000X firmware, I figured something must be on the way.  So I was checking the firmware page periodically, that's how I came across the update a week ago.  The first thing I did was to share it with the community, so we can all benefit from the updates. 

That's one difference between the Chinese brands and the top tier brands, you get what you pay for.  I can log onto Infoline on Keysight to see every piece of equipment I bought from them, the warranty, warranty period, cal certificates, repair records/status, service and safety notes, and all software/firmware/documentation specific to my unit.  It is very nice for a hobby lab like mine, and I can understand the value for a large professional lab with hundreds or thousands of pieces of equipment.
Things are a changing !
https://int.siglent.com/support/
Create an account and register your products.

Did once in the early days and all the spam I ever get is a mail when a new product guide is released.

Just tried that: no luck!
I registered, logged in and started by attempting to register my sds1104x-e.

Had the following error return:

"Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing WSDL: Couldn't load from 'http://219.133.80.90:8090/DYWebServer/DYWebServer.asmx?wsdl' : failed to load external entity "http://219.133.80.90:8090/DYWebServer/DYWebServer.asmx?wsdl" in /home/intsiglent/public_html/member/module/product-registration.php:32 Stack trace: #0 /home/intsiglent/public_html/member/module/product-registration.php(32): SoapClient->SoapClient('http://219.133....') #1 /home/intsiglent/public_html/member/index.php(26): include('/home/intsiglen...') #2 /home/intsiglent/public_html/account.php(3): include('/home/intsiglen...') #3 {main} thrown in /home/intsiglent/public_html/member/module/product-registration.php on line 32"

I'm in Sweden, if that could be part of the problem.

And when i tried adding my SDM3045X i get the response, your model doesn't exist...
 

Offline Siglent America

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Re: The Siglent SDG2042X Thread
« Reply #1183 on: September 18, 2019, 12:27:46 pm »
There is no notification, in fact, I don't even believe there's a warranty registration.  At least I have never seen one on the website.

In reviewing the update date for the prior versions, and the recent update on the SDG1000X firmware, I figured something must be on the way.  So I was checking the firmware page periodically, that's how I came across the update a week ago.  The first thing I did was to share it with the community, so we can all benefit from the updates. 

That's one difference between the Chinese brands and the top tier brands, you get what you pay for.  I can log onto Infoline on Keysight to see every piece of equipment I bought from them, the warranty, warranty period, cal certificates, repair records/status, service and safety notes, and all software/firmware/documentation specific to my unit.  It is very nice for a hobby lab like mine, and I can understand the value for a large professional lab with hundreds or thousands of pieces of equipment.
Things are a changing !
https://int.siglent.com/support/
Create an account and register your products.

Did once in the early days and all the spam I ever get is a mail when a new product guide is released.

Good morning.
Siglent warranties the product itself, not the owner. So there is actually no real need to try and register it. We have recently made some changes to the SiglentNA.com website and we are trying to clear out old things that are still showing up. If you would like to sign up for the Siglent NA newsletter than please just email us at info@siglent.com and tell us you wish to be added. The newsletter does list all FW updates in the past month as well as videos, application notes, operating tips, new product releases, etc.

With recent changes in privacy laws, especially in Europe, companies are more conscious about adding people to their mail lists than in the past. Siglent is working to keep up with those new laws.

BTW, if you are in North America then you might want to stick with SiglentNA.com. The international site (INT) was designed for English speaking people outside of NA and the EU but it is maintained in Asia, not by us here in Cleveland.

Thanks
« Last Edit: September 18, 2019, 12:31:23 pm by Siglent America »
 

Offline tautech

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Re: The Siglent SDG2042X Thread
« Reply #1184 on: September 18, 2019, 08:14:40 pm »
Good morning.
Siglent warranties the product itself, not the owner. So there is actually no real need to try and register it. We have recently made some changes to the SiglentNA.com website and we are trying to clear out old things that are still showing up. If you would like to sign up for the Siglent NA newsletter than please just email us at info@siglent.com and tell us you wish to be added. The newsletter does list all FW updates in the past month as well as videos, application notes, operating tips, new product releases, etc.

With recent changes in privacy laws, especially in Europe, companies are more conscious about adding people to their mail lists than in the past. Siglent is working to keep up with those new laws.

BTW, if you are in North America then you might want to stick with SiglentNA.com. The international site (INT) was designed for English speaking people outside of NA and the EU but it is maintained in Asia, not by us here in Cleveland.

Thanks
Point is the product registration on the Siglent INT site is broken and needs fixing.
Reported to them yesterday for the webmaster to get working as it should.

Yes each of our regions have different ways to handle warranty and customer support however if our customers wish to register themselves and their products with the factory then it should be available and work.
Avid Rabid Hobbyist
 

Offline ebastler

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Re: The Siglent SDG2042X Thread
« Reply #1185 on: September 18, 2019, 08:21:45 pm »
With recent changes in privacy laws, especially in Europe, companies are more conscious about adding people to their mail lists than in the past. Siglent is working to keep up with those new laws.

You mean, Siglent intentionally broke the registration option on their website, so they don't get in danger of processing customer data?  ;)
 

Offline n3mmr

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Re: The Siglent SDG2042X Thread
« Reply #1186 on: Today at 02:27:04 pm »
I noticed the 2042X Ref Clock input has an inpiut impedance of 5kOhm.

The waveform from my Leo Bodnar GPSDO at 10MHz looksrather unruly, when looking with an oscilloscope in parallell with the 2042 clock input.

Shouldn't that clock input have a 50 Ohm impedance??

 


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