Rigol DS1052E Ep#37

[clonecrp]

Good ... and thanks for the info... Love the Scope !
Doug

[Neutron7]

Hi, I just got this scope, mainly for monitoring synthesizer waveforms when writing DSP and firmware.
I think the fan is a bit too loud (its louder than all the fans on my PC, yet it hardly seems to move any air)

A few people here have apparently taken the scope apart already, and maybe you could let me know how hot it runs.

there are a couple of things that come to mind, One is that there might be a control in the firmware to adjust the fan speed, or secondly use an extra internal zalman fan speed controller i have.

If anyone has any thoughts on that please let me know.

By the way i am not that worried about warranty, I bought it from China for $360 US so i doubt it would be easy to return it anyways.

[Joy at MCS]

The fan on the Rigol units does run a bit loud on some of the units. It doesn't mean that anything is wrong or that the unit will overheat.

[saturation]

I have the same, fans are simple enough to replace, but so many low noise one's eventually make noise as they 'settle in'.

If you do mod it let us know how you fared and what you did to get around it.

Hi, I just got this scope, mainly for monitoring synthesizer waveforms when writing DSP and firmware.
I think the fan is a bit too loud (its louder than all the fans on my PC, yet it hardly seems to move any air)

A few people here have apparently taken the scope apart already, and maybe you could let me know how hot it runs.

there are a couple of things that come to mind, One is that there might be a control in the firmware to adjust the fan speed, or secondly use an extra internal zalman fan speed controller i have.

If anyone has any thoughts on that please let me know.

By the way i am not that worried about warranty, I bought it from China for $360 US so i doubt it would be easy to return it anyways.

[EEVblog]

Hi, I just got this scope, mainly for monitoring synthesizer waveforms when writing DSP and firmware.
I think the fan is a bit too loud (its louder than all the fans on my PC, yet it hardly seems to move any air)

A few people here have apparently taken the scope apart already, and maybe you could let me know how hot it runs.

there are a couple of things that come to mind, One is that there might be a control in the firmware to adjust the fan speed, or secondly use an extra internal zalman fan speed controller i have.

The air that comes out my Rigol is not noticeably warm even after using it for quite some time. I suspect you could get away with simply disconnecting the fan altogether, unless you used it for long periods in a high ambient environment. I should actually measure the temp.

Dave.

[alm]

Keep in mind that a significant part of the noise is caused by the airflow. So without reducing the airflow or increasing the size of the fan, there's only so much you can do (eg. improve bearing noise). I wouldn't reduce the airflow without careful analysis, there might be a corner that got insufficient cooling so they just used the brute force solution and increased the fan speed. Especially with all those overclocked scopes, you need all the cooling you can get. Maybe you can get it to 150MHz with liquid nitrogen cooling .

[saturation]

Interesting Rigol history:

https://www.eevblog.com/forum/index.php?topic=553.msg7820#msg7820

[markman]

A couple of us have posted pictures over on RCGroups.  
http://www.rcgroups.com/forums/showthread.php?t=663958&page=62
http://www.rcgroups.com/forums/showthread.php?t=663958&page=63

One gentleman put a 20 ohm resistor in series with the fan and then used rubber bands to mount the fan softly (rubber bands fall apart eventually, I wouldn't use them).  I'm sure that raised the internal temperatures slightly, but probably not too much.  I was concerned since this is dissipating 20W and I think my old Tek 475 might have died because the fan wasn't working right anymore.  

I took the original fan out and put a slower 80mm fan in there.  I didn't feel anything too hot on the main board, but the took some readings on a couple of the power supply's heatsinks.  With the original fan, one was reading around 116 and that dropped about 10 degrees with the bigger, quieter fan.  

Hi, I just got this scope, mainly for monitoring synthesizer waveforms when writing DSP and firmware.
I think the fan is a bit too loud (its louder than all the fans on my PC, yet it hardly seems to move any air)

A few people here have apparently taken the scope apart already, and maybe you could let me know how hot it runs.

there are a couple of things that come to mind, One is that there might be a control in the firmware to adjust the fan speed, or secondly use an extra internal zalman fan speed controller i have.

If anyone has any thoughts on that please let me know.

[xoom]

I accidentally found nice little app for Rigol waveform view. It's written by alank2 from RC Groups forum.
SA Sample Studio
All Thanks go to alank2

[scrat]

I opened the application, and guess it's only a waveform file viewer. Or does it directly interface to the scope, as the program that Rigol supplies?
I don't have a Rigol here (have just bought one on Dealextreme), so I can't try...

[xoom]

it's for waveform only

[scrat]

Thanks.
I hoped it was an application for connecting to the scope, but for that there is already the UltraScope from Rigol.

[marianoapp]

I accidentally found nice little app for Rigol waveform view. It's written by alank2 from RC Groups forum.
SA Sample Studio
All Thanks go to alank2

you could also use this MATLAB function, which besides letting you see the waveform you can do whatever you want with the data, like exporting it to a wav file a use it as an input in LTSpice.

[scrat]

I accidentally found nice little app for Rigol waveform view. It's written by alank2 from RC Groups forum.
SA Sample Studio
All Thanks go to alank2

you could also use this MATLAB function, which besides letting you see the waveform you can do whatever you want with the data, like exporting it to a wav file a use it as an input in LTSpice.

I was thinking at Matlab too, which IMHO is one of the most versatile tools for an engineer, and among a world of other things, allows tasks like this to be done very quickly.
When my Rigol will arrive, I think I will try making an application for downloading and viewing and analyzing waveforms.

For example, this lines (using the file linked by marainoapp) should just launch an open file GUI and plot waveform data:
[file_name, path_name, filter_index] = uigetfile('*.wfm');
[y, nfo] = readRigolWaveform([path_name,'\',file_name]);
plot(nfo.x0+[0:nfo.dx:(size(y,1)-1)*nfo.dx],y);
I can't try this (haven't got any Rigol wfm files), but should work.

[Time]

I accidentally found nice little app for Rigol waveform view. It's written by alank2 from RC Groups forum.
SA Sample Studio
All Thanks go to alank2

you could also use this MATLAB function, which besides letting you see the waveform you can do whatever you want with the data, like exporting it to a wav file a use it as an input in LTSpice.

I was thinking at Matlab too, which IMHO is one of the most versatile tools for an engineer, and among a world of other things, allows tasks like this to be done very quickly.
When my Rigol will arrive, I think I will try making an application for downloading and viewing and analyzing waveforms.

For example, this lines (using the file linked by marainoapp) should just launch an open file GUI and plot waveform data:
[file_name, path_name, filter_index] = uigetfile('*.wfm');
[y, nfo] = readRigolWaveform([path_name,'\',file_name]);
plot(nfo.x0+[0:nfo.dx:(size(y,1)-1)*nfo.dx],y);
I can't try this (haven't got any Rigol wfm files), but should work.

I have done a ton of work with postprocessing in matlab with the *.csv extension.  I have not used the Rigol but most scopes I have used (unfortunately I am spoiled and have never even used a midrange or low-range scope) save in the *.csv extension.  *.csv is just a comma delimited matrix of the data.  I can imagine it getting any simpler than that.