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A Rigol oscilloscope has a USB output, allowing you to control it with a computer and and perform additional processing externally. I was inspired by Cibo Mahto's article, and came up with some new Python oscilloscope hacks: super-zoomable graphs, generating a spectrogram, analyzing an IR signal, and dumping an oscilloscope trace as a WAV file. The key techniques I illustrate are connecting to the oscilloscope with Windows, accessing a megabyte of data with Long Memory, and performing analysis on the data. Analyzing the IR signal from a TV remote using an IR sensor and a Rigol DS1052E oscilloscope. Super-zoomable graphs One of the nice features of the Rigol is 'Long Memory' - instead of downloading the 600-point trace that appears on the screen, you can record and access a high-resolution trace of 1 million points.
In this hack, I show how you can display this data with Python, giving you a picture that you can easily zoom into with the mouse. The following screenshot shows the data collected by hooking the oscilloscope up to an IR sensor. In the above picture, the sensor is the three-pin device below the screen. Since I've developed an, my examples focus on IR, but any sort of signal could be used. By enabling Long Memory, we can download not just the data on the screen, but 1 million data points, allowing us to zoom way, way in.
The graph below shows what it sent when you press a button on the TV remote - the selected button transmits a code, followed by a periodic repeat signal as long as the button is held down. The IR signal from a TV remote. The first block is the code, followed by period repeat signals while the button is held down. But with Long Memory, we can interactively zoom way on the waveform and see the actual structure of the code - long header pulses followed by a sequence of wide and narrow pulses that indicate the particular button. That's not the end of the zooming - we can zoom way in on an edge of a pulse and see the actual rise time of the signal over a few microseconds.
You can do some pretty nice zooming when you have a million datapoints to plot. To use this script, first enable Long Memory by going to Acquire: MemDepth. Next, set the trigger sweep to Single. Capture the desired waveform on the oscilloscope. Then run the Python script to upload the data to your computer, which will display a plot using matplotlib.
To zoom, click the '+' icon at the bottom of the screen. This lets you pan back and forth through the data by holding down the left mouse button. You can zoom in and out by holding the right mouse button down and moving the mouse right or left. The magnifying glass icon lets you select a zoom rectangle with the mouse. You can zoom on your oscilloscope too, of course, but using a mouse and having labeled axes can be much more convenient. A few things to notice about the code. The first few lines get the list of instruments connected to VISA and open the USB instrument (i.e.
Your oscilloscope). The timeout and chunk size need to be increased from the defaults to download the large amount of data without timeouts. Next, askforvalues gets various scale values from the oscilloscope so the axes can be labeled properly. By setting the mode to RAW we download the full dataset, not just what is visible on the screen. We get the raw data from channel 1 with:WAV:DATA?
The first 10 bytes are a header and should be discarded. Next, the raw bytes are converted to numeric values with Mahto's formulas. Finally, matplotlib plots the data. There are a couple 'gotchas' with Long Memory.
First, it only works reliably if you capture a single trace by setting the trigger sweep to 'single'. Second, downloading all this data over USB takes 10 seconds or so, which can be inconveniently slow. Analyze an IR signal Once we can download a signal from the oscilloscope, we can do more than just plot it - we can process and analyze it. In this hack, I decode the IR signal and print the corresponding hex value. Since it takes 10 seconds to download the signal, this isn't a practical way of using an IR remote for control. The point is to illustrate how you can perform logic analysis on the oscilloscope trace by using Python.
This code shows how the Python script can wait for the oscilloscope to be triggered and enter the STOP state. It also shows how you can use Python to initialize the oscilloscope to a desired configuration.
The oscilloscope gets confused if you send too many commands at once, so I put a short delay between the commands. Generate a spectrogram Another experiment I did was using Python libraries to generate a of a signal recorded by the oscilloscope. I simply hooked a microphone to the oscilloscope, spoke a few words, and used the script below to analyze the signal. The spectrogram shows low frequencies at the bottom, high frequencies at the top, and time progresses left to right. This is basically a FFT swept through time. A spectrogram generated by matplotlib using data from a Rigol DS1052E oscilloscope.
To use this script, set up the oscilloscope for Long Memory as before, record the signal, and then run the script. Dump data to a.wav file You might want to analyze the oscilloscope trace with other tools, such as. By dumping the oscilloscope data into a WAV file, it can easily be read into other software. Or you can play the data and hear how it sounds.
To use this script, enable Long Memory as described above, capture the signal, and run the script. A file channel1.wav will be created. How to install the necessary libraries Before connecting your oscilloscope to your Windows computer, there are several software packages you'll need.
I assume you have Python already installed - I'm using 2.7.3. This is National Instruments Virtual Instrument Software Architecture, providing an interface to hardware test equipment. Install, the Python interface to VISA.
If you want to run the graphical programs, install and. You can also use Rigol's software, but the included NIVISA 4.3 software doesn't work with pyVisa - I ended up with VIWARNCONFIGNLOADED errors. If you've already installed Ultrascope, you'll probably need to uninstall and reinstall NIVISA. If you're using Linux instead of Windows, see. How to control and program the oscilloscope Once the software is installed (below), connect the oscilloscope to the computer's USB port. Use the USB port on the back of the oscilloscope, not the flash drive port on the front panel. Hopefully the code examples above are clear.
First, the Python program must get the list of connected instruments from pyVisa and open the USB instrument, which will have a name like USB0::0x1AB1::0x0588::DS1ED141904883. Once the oscilloscope connection is open, you can use scope.write to send a command to the oscilloscope, scope.ask to send a command and read a result string, and scope.askforvalues to send a command and read a float back from the oscilloscope.
When the oscilloscope is under computer control, the screen shows Rmt and the front panel is non-responsive. The 'Force' button will restore local control.
Software can release the oscilloscope by sending the corresponding ':KEY:FORCE' command. Error handling in pyVisa is minimal. If you send a bad command, it will hang and eventually timeout with VisaIOError: VIERRORTMO: Timeout expired before operation completed. The API to the oscilloscope is specified in the. If you do any Rigol hacking, you'll definitely want to read this. Make sure you use the right programming guide for your oscilloscope model - other models have slightly different commands that seem plausible, but they will timeout if you try them.
Conclusions Connecting an oscilloscope to a computer opens up many opportunities for processing the measurement data, and Python is a convenient language to do this. The Long Memory mode is especially useful, since it provides extremely detailed data samples.
Ken I also have a Rigol and would like to try this out on Windows. Do you know of any tool to interface with it on windows? Is it a custom USB i/F or serial? If you have a moment have a look at our AnalysIR project on Indiegogo. (see below for details).
We would be happy to offer you a copy if the project is successful. We would also appreciate any suggestions for features & new protocols to support. We should have 20 protocols supported by the time it is released.
BTW: Thanks for all of the work on IR over the years, it has been truly inspirational. As Part of our project we also plan to release a method for recording IR signals & modulation frequency on Arduino (simultaneously).
We will be exhibiting this method at the Dublin Mini Maker Faire on July 27th For anyone interested in IR protocols – we have just launched a project on IndieGoGo for AnalysIR – IR Decoder & Analyzer (Arduino & Raspberry Pi). Currently we support 17 IR protocols and are looking for more to add as part of the campaign. Suggestions Welcome! You can find out more about the Project on or Screenshot via www.AnalysIR.com. Ken, Any chance of giving me a pointer to a solution? I have just bought a Rigol DS1102E scope from Amazon and would like to access it with Python on OSX 10.9 Maverick. The problem is that when I plug in the USB cable, OSX does not recognise the USB port: i.e.
Ls /dev/tty. does not show anything. I have no trouble seeing when another USB cable is plugged in - say an Arduino. On the Riogol, selecting computer or Pictbridge under Utilities does not make a difference.
I guess I could use RS232 but would lim ego get the USB working. Thanks, Mike Alport. I am interfacing RIGOL DS1052 with computer using USB cable. I am acquiring data of two channels in normal mode (600 data points). I have constructed wave forms, but what I am interested in is measuring the phase difference between two waveforms, this is possible only if RIGOL provides me data of channel1 and channel2 at same time intant i.e first sample of ch1 is at t=t0 and first sample value of ch2 is also at t=t0. Kindly tell me in what format is RIGOL transfers data. I am acquiring databy sending WAV:DATA:CHAN1 command, after getting the result I ask for data of channel2.
I had testet the actually firmware V1.15 from for the DSA-815 (TG) and my device response with a continously beeping and an error message ' 413 intermediate frequency signal out of range.' Just before the initializing are finished.
The firmweare is released. I attached my version report of the DSA815-TG, who is about 3 Years old and not often used. I have downgraded to the V1.14 and the Error Message does not occurs - the Spec weorks proper. I also had testet the Hardcopy programm Bildschirmkopie x64 from 30.11.15 from Peter Dreisiebner also response very slow on the DSA815tg.
To proove the software, connectivity (eth) and Windows 10 (586.11) i had test them with the the scope DS2202 and that works fast as expected. I had read about some extensions in the hardcopy part of firmware that maybe responsable for that missfunction. So beware to use the 1.15 if you could'nt downgrade your SA.
Vy 73 de DD4DA. Hi Peter, i got major problems with the if-frequency range, descripted previously and opened a ticket and communicate with the support of Rigol germany. They had confirmed that something is wrong about this issue and their further test with 1.15 firmware offers that the dsa update results also in a poor noise-level - he wrote something about +30dB - thats sound like a problem with if processing part of the firmware. Well, that's their part - i had downgraded my dsa back to 1.14 whre this messages are not shown. I had done further test a couple of minutes ago and found out that the capturing process of the firmware are more faster if you switch the printer output as 'inverse' instead 'normal'. If i also switch the porgramm option 'single-sweep' on, the dsa transfer the screenshot pretty fast.
The printmode in 'normal' position and 'single-sweep' option is on, the capturing time is comparable by a print-putton using the regular USB-memory stick connected on the local device. It seems that the DSA print process consumes much more cpu time and memory as previously releases of the Firmware.
I git an older DSA815-TG device and mybe they had changed the hardware for further expansions, that's not used in my device. I am not familar with the entire construction of the DSA, so this is just a speculation. Well, the init failure an error messages at final init of the DSA and a 30dB higher noise level are confirmed in V1.15 by Rigol Germany and will reported to the developer in china.
Many thanks for the firmware collection - thats pretty nice to check out what's happend in the special releases. In addition, your programm 'Bildschirmkopie'works pretty nice and the best i have seen as now and use them with the DS2302 / DS2202 and DSA815-TG. It just do a pretty good job. Thanks for the public avalibility of your work. Vy 73 de Gerhard. Sanda, that's sound boring anyway - i don't wanna know what some stupids wrote about female doing a technical job or hobby. If they reaches a midlife age, they had learned that there is much more between black and white - maybe:-) Well, my DSA815-TG is an older one and i am unsure if 10hz bw is available or a possible option.
I had never required them - i am a radio amateur on hf and use 100hz some times to see the mixing products close to the main carrier (IMD) of my used exiter and power amplifier. It's a just for my hobby purposes, not more.and yes, my DSA815-TG is about 2 years old, used an older version of boot-loader and maybe an older hw revison, who make it possible for me to downgrade again. I have paid for the both parts of vSWR-Option. All other are not required for me as now.
I know that's able to unlock all option with the keygen and i also had read the hole thread around the decryption of the entire rigols 2k,4k Scope and older DSA8x anaylzer and was amazed about the knowledge of the programmer who has analyzed, identified and offer the used cipher algorythm. I don't was further surprised that he was later able to write the keygen for that. I had expect that the owner of this eevblog stop the thread if the details of internal cipher method was published because it's not allowed to do this in every country. Themost companies are very sensitive about this kind of issues, even it's a chinese one.
That they had noticed, that a keygen is available and reduces their 'option business', confirms the modification of the bootloader that stop the downgrade and the further usage of the keygen in later offered firmware releases and newer and higher priced scope and analyzer models that released in the near past. I actually uses a DSA815TG with the hole VSWR-Option and the advanced messuring Kit that's helpful for th two-tone messurements. The EMI option is actually not required - even i homebrew and repair some of my rf equipments. I am active on the HF-Bands (mostly doing morese code and using less the microphone), The Satellite operation and all multimode UHF and VHF and SHF radios are sold in the past because i don't use them. The last one is the D-Star radio ic2820h Icom is also boxed again like the homebrewed FM-ATV transmitter since a couple of years. All antennas expect the Diamond X30 are removed because i am not further interessed operate on frequencies upper that 50Mhz. I had done this in the late 80th to 2001 and there is nothing that i wanna do as now.
I had moved my homebrew activities from VHF and upper to HF and lower and do design and programming a modern rotor controller using a 5' TFT-Display and an ARM Cortex M4F. I am not sure if this will be ever published because i see the hole (time consuming) message traffice of K3NG's published one. Most of them had never seen a IDE and would build and customize them. The questions are very basic and could answered by just reading the fucking manual of the stupid arduino manual's. The IDE i use for the ARM-Cortex-M are quite more comlex and powerful - the manual are bigger and more detailed.
Rigol Dsa815 Tg
To publish a source code of such project enters into a nightmare of questions like them from the arduino example of K3NG. I don't want to waste my less getting time to do such. I wanna do working on my radio instead. Actually i rebuild the kitchen with my wife - also a time consuming job that needs to be done quite fast and does'nt required any Rigol's but more tools from Bosch, Makita and Festool. I get retired if this is (ever) finished:-) vy 73 de Gerhard, DD4DA.
Website was not working for me. Edit: the reason was Chrome, on Internet Explorer it is working fine.
However on the Rigol site you can request a firmware. It took only 5 minutes, than I got an individual download link (will be invalid soon, thats why I am not posting it here) by mail. Not a lot of changes, thus not worth for installing for most of us. The release note says: Version 00.01.16.00.03 from: 1. Added support for new models DSA705 and DSA710. Solve the bug of command “:SENSe:TPOWer:MODE?” returned wrong result 3.
(AE 56)Solve logarithmic abscissa save csv data error problem Version 00.01.15.01.00 from 1. Match performance for hardware revision 01.05 with older hardware revisions (whatever that means). Many enhancements and modifications were made on revision 00.01.15.00.00 from. At least this 1.15.00 version should be installed on your DSA815. Edit: I installed 1.16 on mine, everything seems OK, options are still there.
There is a new (inactive) option now showing I did not recognize before called '2FSK-DSA800'. So probably a new option with addl. Functionality to analyze and demodulate 2FSK signals will be available. The DSA700's are built on the same 'platform' as the DSA800 but I don't think they'll mix firmware/software and make the DSA700 firmware in a form for the DSA815. The DSA705 (500MHz) and DSA710 (1GHz) unfortunately don't have a tracking gen option. As a hint, if anyone has issues upgrading your firmware on a Rigol unit. Sometimes it's the USB stick and you need to try a different one.
We are offering a discount on options for Rigol products especially for EEVblog members regardless if you bought your unit from us or not. Just mention the blog when contacting us. Have a great day Everyone! Joy Torres Instruments 4 Engineers Ltd Tel +44 (0) 161 871 7450. Hi There Ted and Everyone. I checked with Rigol because I hadn't heard of this option previously and there isn't anything on our current pricelist.
Rigol said that the option is for 2FSK Modulation which is typically useful in markets such as automotive. You would have to buy the option and the price for this hasn't been released yet.
Rigol are going to be coming out with a datasheet and I'm waiting for that as well. If anyone is interested in getting the info when I get it send me a PM and I'll get it to you as soon as it comes in. Have a great day Everyone! Joy Torres Instruments 4 Engineers Tel +44 (0) 161 871 7450 Website. Full DSA815 System/Firmware Information and 10 MHz Clock Calibration: The provided PDF attachment explains how to get the DSA815 full System (Hardware and Firmware) Information and how to Adjust the 10 MHz Clock Frequency (Frequency Standard).
The access key requirement was revised in Firmware 00.01.15, +. Credit and thanks go to PeDre (Peter) for providing the additional information for accessing the Service/Calibration Modes. Thank you Peter. Edit: I found a error in Steps 2a) and 2b).
The corrected (replacement) version is provided here below. I'm sorry for the error, although grateful that no one had, or reported a problem with it. There is new Firmware available for the DSA815: DSA815 Firmware00.01.17.00.04 To get this you can go to Then go to Spectrum Analyzer. Then Download DSA815 Firmware00.01.17.00.04 V00.-08-15 -Added the SSC fuction -Cleared the LAN communication trouble -Resolve the front panel switch control problem Yes, it is safe to install, and all options are still there for all the older DSA815's with Boot loader 00.01.02 and.03. See my previous post (Reply #784) to see the full System and Firmware Information after doing the FW upgrade. Edit: I Do Not have the newer version DSA815 that TurboTom (Thomas) describes in his post below (Reply #786).
If you have a Newer DSA815 with Boot loader version 00.01.04 then be sure to at least read post's (Reply #) 786, 787, and 790 (. may very well be a potential fix for the newer DSA815s). FYI - All older DSA815's/TG (with Boot loader 00.01.02, 00.01.03) are all working fine as is with this Firmware upgrade. ATTENTION: All owners of the later models of the DSA815(TG) who couldn't use the Riglol keygenerator to enable the options but had to connect the WP pin of the FRAM chip to Vdd, please DON'T INSTALL the new firmware! I did and apparently, the new firmware checks if it can write to the FRAM and if it cannot, it somehow disables the trial licenses (probably in program code). It may work okay if you just for the update remove the WP-Vdd link but one never knows what might happen if the link is closed again later.
I guess it's time to look for a 'proper' hack for the later DSA815 models. Good luck, Thomas. Hi Thomas: What Boot version do you have in your DSA815? And how (procedure used) did you downgrade your Firmware?
You are very fortunate, and I'm happy for you. I'm asking about your Boot version because if you have 00.01.02 or 00.01.03 then you should be able to downgrade to FW 00.01.07 and use the Riglol Keygen to install the Options.
And then reinstall FW 00.01.17. This is not possible if you have Boot version 00.01.04. And I thought that the newer DSA815's had Boot version 00.01.04 and could not downgrade the Firmware at all.
But if you have Boot version 00.01.04 it must be that you just can't downgrade to a version that uses the older Boot version, but still able to downgrade a couple of versions. Anyway if you need FW 00.01.07 I can help you. Ted - I've got bootloader version 00.01.04 and hardware 00.08. I downgraded the same way as I did the update - in the storage menu with an USB stick containing only the firmware file. I experimented with this before and found it to work.
Apparently Rigol hasn't blocked the 'reverse route' like they did in the DS1000Z series. Yet if I remember correctly, I cannot downgrade to firmware versions that came with the previous bootloader version (I guess that's basically why the machines with the 01.04 bootloader cannot be unlocked with the 'Riglol' keygen). So nothing won but also nothing lost.
It will only get frustrating if Rigol should add some real innovations in follow-up firmware versions in future (I doubt they will. But who knows, maybe someone will find a different way to 'free' the later DSAs without write-protecting the FRAM. Cheers, Thomas.
Thanks Ted, I think I've got the files you were referring to somewhere as well. As yet I'm a little reluctant to apply that patch yet, especially since I've also got the Siglent SSA3021X(+) which makes the Rigol look rather limited. Turtle odyssey crack fifa. Probably I'm going to (try to) sell the rigol eventually, yet sometimes it's also quite beneficial to have two such units, especially when analyzing some 'peculiarities' of one of the SAs. What I'm actully missing more than the (test) licenses on the rigol, is the 10Hz RBW. And that's the one feature I cannot get on my instrument, whatever kind of tweak I appy to the FRAM.
This Siglent (with a little 'help.' ) goes down to 1Hz RBW, quite a difference to the Rigol in its current configuration. Cheers, Thomas. I intend to 'poke around' in my DSA815 a little to experiment with the FRAM and once open, I couldn't resist to peek into the RF section as well (didn't open that so far) - guess I was surprised to find something considerably different from the design shown in Dave's teardown video and the associated photos. Actually, the RF input section and the 1st mixer had been modified excessively and some other sections as well.
As far as I can tell, the VCOs were kept practically unchanged. But now there are many 'permanent adjustment points', as it seems mostly for impedance matching, all throughout the areas where frequencies 500MHz are processed. Input protection also seems to have been 'beefed up' a little.
One very funny detail is that apparently some of the 1st LO signal is coupled to the 1st mixer output through a low pass filter. Maybe there's some feed-through in the mixer that's compensated that way?? Anyway, I always had the impression that on my DSA815 the noise floor is round about 10dB better than what's shown in Dave's TG tutorial and other videos. That modification may actually explain the improved performance of the later instruments. I took some photos of my machine (sorry for the bad focus at the periphery sometimes - I guess I need a better lens for these close-up shots) and uploaded them to my web server: (25MB). So have a look if you llike!
Of course that kept me from experimenting with the FRAM so far.but that will happen soon anyway. Cheers, Thomas. Okay, bad news for all who own a DSA815(TG) with the 00.01.04 bootloader: I just removed the write protection from the FRAM in my DSA and updated the firmware to 00.01.17. Before the update I had more than 34 hours of trial time on all options. After the update the 'Option Type' for AMK, EMI and VSWR was set to 'Trial' (TG is official) and the new SSC (2FSK) 'None'. But the time of all trial options was reset to zero, i.e. They were set inactive.
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Apparently, this information is also written to the FRAM since a downgrade to firmware 00.01.16 now didn't reactivate the trials (like it did with the FRAM write protected). Basically speaking, this new update steals your trial time and only the official options prevail. I guess I'll contact Rigol with this issue and ask for a reactivation key for the trials (and possibly also a trial for SSC) - I'm quite curious about their reaction. Anyway, this could mean that the update options for 'write-protected' DSA815s with bootloader 00.01.04 end at firmware version 00.01.16. I guess if this is the case, Rigol will have a hard time selling their DSA815 / 832 in future since there's a better alternative available. Cheers, Thomas P.S. I read the complete FRAM contents before this experiment so I can actually write it back with the 'old' options enabled, this only requires some soldering.
But I prefer to wait for Rigol's answer first.