hybridfree/eevblog-posts huggingface dataset:
Is this ancient O-Scope I PC based oscilloscope usable?  - Page 1
Forum section: electronics / testgear

author: Joebeazelman
author_rank: Regular Contributor
timestamp: June 06, 2023, 12:32:02 am
content: I bought an ancient O-Scope I PC-based oscilloscope at a yard sale for $5. It's made by Allison Technology and has a BNC connector, a parallel connector and a power input. I was able to find a web page on the product, but the the company claims it is closed and directs visitors to Pico technologies. The site's design looks like an Arpanet holdout:http://www.atcweb.com/oscope.htmIs this oscilloscope useful? Is there any software available for it? Any other information would be greatly helpful. Thanks in advance.

author: abeyer
author_rank: Frequent Contributor
timestamp: June 06, 2023, 08:16:55 pm
content: Quote from: Joebeazelman on June 06, 2023, 12:32:02 amI'm sure it's possible to make it work... but it doesn't seem worthwhile unless it's just for fun.Even if you track down a copy of the ancient software, you still have the issue of needing a machine to run it on that can run old 16 bit dos software and has a hardware parallel port. And assuming you get all that set up, you end up with a single channel 22kHz scope.You're likely better off just going with some modern "sound card scope" software, or a cheap aliexpress scope board.

author: james_s
author_rank: Super Contributor
timestamp: June 06, 2023, 08:53:17 pm
content: If you can find the software it may be of some interest to vintage PC enthusiasts but given the modest capability it probably isn't going to be all that useful. You could open it up and take a look at the hardware, it's likely little more than a ADC chip and analog front end. From the look of the thing I'd guess it is early 90s vintage.

author: alm
author_rank: Super Contributor
timestamp: June 06, 2023, 09:36:48 pm
content: I'd say no, it's not useful except maybe for the case with the BNC connector. If it uses a parallel interface, then the software was likely bit-banging this interface, which does not work at all with modern USB to parallel converters. So you'll need to find a computer old enough to still have an internal parallel port (or ISA/PCI card with a parallel port), never mind run the software. And this will give you a scope with 50 kHz bandwidth (according to the link) and a tiny memory depth (500 sample points according to the same website)?In the US you might be able to pick up a 20 MHz dual channel analog scope for a similar price (if you can find one locally) that's vastly more useful than this.

author: Fungus
author_rank: Super Contributor
timestamp: June 06, 2023, 09:41:35 pm
content: C'mon dude, open it up and show us the insides...
HP 183A - "light shield and contrast filter" - modern replacements? - Page 1
Forum section: electronics / testgear

author: py-bb
author_rank: Regular Contributor
timestamp: June 06, 2023, 05:55:23 pm
content: Hi there,I've been asked to repair a lovely analogue HP oscilloscope which is a little out of my comfort zone.Reading the manual page 2in the physical copy (page 2-2) talks about removing "the light shield" and "contrast filter" - "which also acts as an RFI shield"When I turn it on I can see small sparks between the bottom left corner of the tube and whatever's behind the faceplate (I'm going to investigate that when I've read more of the manual)Any ideas on a modern replacement for the "contrast filter" at least would be good (or someone who knows re-assuring me on CRTs, I rarely saw those filters on CRT computer monitors as a kid and I don't know if they were useless/nonsense or not even).I am aware of the very high voltage inside. For another repair the manual says "short the annode to the ground lug" - any tips on that whilst I'm on the subject? I've been reading and will check Youtube but I'd love someone to go "what this guy does [on Youtube or a blog or whatever] - you can trust him" because there's a lot of stupidity out there.Thanks
Trigger on UART pattern - Page 1
Forum section: electronics / testgear

author: MotoDan
author_rank: Contributor
timestamp: June 03, 2023, 07:46:26 pm
content: Hello all,I’m in the market for a new scope which has the capability of triggering (and decoding) on a UART pattern. Like most lower entry scopes, my Rigol 2000 series scope will only allow for a single data byte for triggering. I would like to be able to trigger on a string of data. A minimum of 10-20 bytes would be nice. It doesn’t look like the Rigols or Siglents have the multi-byte trigger capability. I did find a high-end Agilent 9000 series, but they are way out of my budget which under $2k.

author: langwadt
author_rank: Super Contributor
timestamp: June 03, 2023, 08:07:06 pm
content: Quote from: MotoDan on June 03, 2023, 07:46:26 pmwouldn't take many line of code to do as an addon with cheap micro connected to ext-trig

author: pdenisowski
author_rank: Super Contributor
timestamp: June 04, 2023, 12:00:21 pm
content: We actually support multi-byte UART triggering on all of our oscilloscopes, but even our entry level RTB2000 oscilloscope with the UART option (K2) lists at about 2500 USD.https://www.rohde-schwarz.com/us/products/test-and-measurement/oscilloscopes/rs-rtb2000-oscilloscope_63493-266306.htmlEdit: the RTB only supports patterns up to 4 bytes.

author: MotoDan
author_rank: Contributor
timestamp: June 06, 2023, 02:44:41 pm
content: I thought about that and may end up with that approach in the interim. Just wanted to check if any scopes had this feature before upgrading mine.Thanks!
military blackface HP 8640B - OPT 323 specs? - Page 1
Forum section: electronics / testgear

author: tatel
author_rank: Frequent Contributor
timestamp: June 06, 2023, 11:17:20 pm
content: After some time looking for HP 8640B I found a military variant that could serve me well. I'm about to pull the trigger. However I heard it about having some limitations wrt the civil version. I can't find any manual; know that there's available at Artek for cheap but it somehow annoys me having to purchase the manual just to see if I have a sure shot or should look elsewere.Is somebody here that could say what the differences are military vs civilian HP 8640? Having a capture of the specifications would be even better.

author: WideBandwidth
author_rank: Contributor
timestamp: June 07, 2023, 05:15:12 am
content: I own the military version. The main differences I recall is no external frequency counting capability and no frequency lock capability. Other than that, it has the same amplitude and frequency modulation functions, same frequency ranges (may or may not include the frequency doubler option to extend the range up to 1 GHz).I believe it has the same phase noise spec. I recall I measured mine when I got it and it was within the civilian phase noise specifications.Both the civilian and military versions do have different options, so your mileage may vary.The military version does have the distinct advantage of being colored bright yellow, so you'll never miss it in the dark.

author: tatel
author_rank: Frequent Contributor
timestamp: June 07, 2023, 10:14:55 am
content: Thank you very much. I ordered it.BTW, I finally found some site, plenty of information about HP8640, including a .txt file with military-civilian version differences, repair tricks, manuals for the civilian versions, etc. I think it's worth to put the link here:http://ftb.ko4bb.com/getsimple/index.php?id=manuals&dir=HP_Agilent/HP_8640_Signal_Generator
Agilent 34401A 6.5 Digit MM Problem - Page 1
Forum section: electronics / testgear

author: blue2thabone
author_rank: Newbie
timestamp: June 06, 2023, 02:46:22 am
content: Hello everyone,I'm new to the group, so first post. I bought a really nice Agilent 34401A on ebay, and i have a little issue i need help with. The meter works great, other than the decimal digits blink really fast. more like jitters. And when you power it up, it displays a quick message "addr 22" or something like that. can anyone help with suggestions?Thank you kindly

author: Shonky
author_rank: Frequent Contributor
timestamp: June 06, 2023, 03:50:21 am
content: Addr 22 is just the programmed HP-IB (GPIB) address. Totally normal.

author: coromonadalix
author_rank: Super Contributor
timestamp: June 06, 2023, 06:32:50 am
content: yes it shows it gpib addressplease read the user manual(s) who can be found on the webyou'll learn about a few functions and or settings

author: AVGresponding
author_rank: Super Contributor
timestamp: June 06, 2023, 08:58:20 am
content: There are alotof features and settings to learn about on these, and to get the most out of it, you really need that GPIB to connect it to a PC.The flickering digits are due to the high update rate it'll be set on. You can lower it in the menu system, which you can access on the front panel by pressing "shift" then the left arrow, and use the arrow keys to navigate around.

author: DavidKo
author_rank: Frequent Contributor
timestamp: June 06, 2023, 11:38:41 am
content: Look for the manual on the Keysight web site. There is also quick start guide.The navigation in the menu is little bit non-intuitive. It took me a while till I get familiar with it.
Rigol DHO stops transferring data at 200K - Page 1
Forum section: electronics / testgear

author: luis garcia
author_rank: Regular Contributor
timestamp: June 07, 2023, 11:37:08 pm
content: DHO1000.I set the memory depth to 1M.Then I capture some signal on channel 1. All remaining channels are off.From my PC i open the instrument using Visa, select source channel1, data format Byte, mode Raw, start=1 and stop=1M, and then read the waveform. I read the waveform length from the data itself and the number is correct, 1M.However, when reading the actual data, It stops at 200K with error "VI_Error_IO".Below 100K it works well. Beyond that it always stops at 200K.The PC is connected to the instrument by USB.Anything I am missing perhaps?L.

author: luis garcia
author_rank: Regular Contributor
timestamp: June 08, 2023, 11:58:44 am
content: Thanks for yor answer Peter. It makes sense.However I do not see it working as expected.If I change start and stop points i need to perform a ":wav:data?" again. But if I do this, the memory pointer is reset to zero and what i read is the first 200K again.If I set the start and stop points after "wav:data?" the read timeouts, apparently because setting start and stop points resets the buffer.So, my question now is: if I want to read by chunks of 200K, which of the following is the correct approach?1. Wav:data?; Wav:start; Wav:stop; read data2. Wav:start; Wav:stop; Wav:data?; read data3.L.

author: luis garcia
author_rank: Regular Contributor
timestamp: June 08, 2023, 01:29:33 pm
content: Hmmm.I see no difference placing the PRE? after DATA?.I can see the PRE command reads all parameters and they look fine.But it behaves as I explained above.This is my second Rigol device. The first one, the DHO4, had to be returned. I have no much experience with this brand.Everything looks promising with DHO1000. Reading the buffers was essential to me and is not working as expected. I was happy to see that the unit came with USB3 instead of USB2. But everything is fading away now.:-(

author: Fungus
author_rank: Super Contributor
timestamp: June 08, 2023, 01:36:39 pm
content: Why are you using Visa? That's the most horrible software and just gets in the way.Just make a direct connection to the 'scope and see what happens.

author: luis garcia
author_rank: Regular Contributor
timestamp: June 08, 2023, 02:00:12 pm
content: Yes, i stop it with ":stop" command. Actually it is stopped before i start to read data but to be safe i send the command before i send the other commands.
Signal Generator ADF435X does not communicate with the PC. - Page 1
Forum section: electronics / testgear

author: NE5867
author_rank: Newbie
timestamp: June 06, 2023, 10:27:34 am
content: Greetings to all , I have a problem with a 35Mhz to 4.4Ghz signal generator onta an ADF435X , I can not get it to communicate with my pc , I installed the drivers , but the generator does not connect with the pc . Can anyone help me ?
DHO1000 missing GEL file in 0.2.7 upgrade?? - Page 1
Forum section: electronics / testgear

author: luis garcia
author_rank: Regular Contributor
timestamp: June 05, 2023, 06:39:56 pm
content: Looking at the ZIP file for the upgrade 0.2.7 for Rigol DHO serires, there is no DH1000.gel file inside. I can see only the DHO4000.gel file.Have tried downloading from different Rigol sources, but the file is the same. One of these pages is the rigol.com DHO1000 page, clicking on firmware downloads.Upgrade is from May-17th.Does that mean the GEL file is the same for both 1000 and 4000 ? Is there any specific source for 1000 series?L-

author: Marchello
author_rank: Contributor
timestamp: June 05, 2023, 07:56:09 pm
content: Hi!Just flash DHO4000.gelBRMark

author: Fungus
author_rank: Super Contributor
timestamp: June 05, 2023, 08:16:23 pm
content: Quote from: luis garcia on June 05, 2023, 06:39:56 pmYes.Quote from: luis garcia on June 05, 2023, 06:39:56 pmNo.
feedback on b-side S11 - Page 1
Forum section: electronics / testgear

author: lamoule74
author_rank: Contributor
timestamp: June 05, 2023, 04:56:05 pm
content: Hey everyone,Does anyone of you have a feedback on that equipment ?"https://fr.aliexpress.com/item/1005002399947970.html?aff_fcid=4d935844a481452ea2b69783333216a8-1685984082660-07784-_DFLhT7p&tt=CPS_NORMAL&aff_fsk=_DFLhT7p&aff_platform=shareComponent-detail&sk=_DFLhT7p&aff_trace_key=4d935844a481452ea2b69783333216a8-1685984082660-07784-_DFLhT7p&terminal_id=bc248a2f0b5843cc882dc55b7b2e8dba&afSmartRedirect=y"video here :Only $21,84, the price afraid me...Cheers.
How (much) does FFT speed up a SA? - Page 1
Forum section: electronics / testgear

author: RBBVNL9
author_rank: Frequent Contributor
timestamp: June 04, 2023, 07:56:54 pm
content: Modern spectrum analyzers often add FTC analysis to their traditional swept-tuned designs in order to speed up speeds at low RBW settings. How much does FFT help in this respect? I tried to answer that question for my Rohde & Schwarz FPC1500. In the attached overview, you find the results.If you are interested in how I carried out these tests, check out the video athttps://youtu.be/W9Q77xTSRrA
Ali Express Equipment Query? - Page 1
Forum section: electronics / testgear

author: Chris56000
author_rank: Frequent Contributor
timestamp: June 04, 2023, 11:58:56 am
content: Hi!Just a quick one!Does any Member recognise what this piece of equipment is and what it's intended to be used for?As per usual, they've set the thing to display in Chinese and blurred over what appears to be the model number at the top of the instrument!I'm aware the item pictured is used as a comparison for a much cheaper portable LCD battery tester, but I would be interested in finding out more about this larger bench instrument!Chris Williams

author: coromonadalix
author_rank: Super Contributor
timestamp: June 04, 2023, 12:05:50 pm
content: i would have said lcr meter lollbattery impedance analyser maybesome ressemblancehttps://www.jinko-tech.com/Detail_pro_214.htmlhttps://www.ebay.com/itm/255712741052https://www.itechate.com/en/product/battery-tester/IT5100.htmlhttps://canada.newark.com/b-k-precision/ba6010/battery-analyzers-6v-to-60v-1khz/dp/33AC4803not sure a power source ?testershttps://www.google.com/imgres?imgurl=http%3A%2F%2F8399362.s21i.faiusr.com%2F2%2FABUIABACGAAg5JH47AUopfWvvgcwsAk4zgY.jpg&tbnid=1Q-7D9MyROT41M&vet=12ahUKEwjVoYnlyan_AhVPNlkFHQhgB5wQMygVegUIARDIAw..i&imgrefurl=http%3A%2F%2Fwww.cz-ckt.com%2Fpd.jsp%3Fid%3D184&docid=Ev0z84bnUm30hM&w=1200&h=846&q=Battery%20internal%20resistance%20testers&client=firefox-b-d&ved=2ahUKEwjVoYnlyan_AhVPNlkFHQhgB5wQMygVegUIARDIAw

author: trp806mo
author_rank: Regular Contributor
timestamp: June 04, 2023, 01:54:26 pm
content: https://www.lisungroup.com/products/electrical-safety-tester/battery-tester.html
Agilent/Keysight DSAX/DSOX/MSOX 90000A LCD display replacemt - Page 1
Forum section: electronics / testgear

author: mov02pc
author_rank: Newbie
timestamp: June 02, 2023, 03:56:30 pm
content: Hi there,Anyone knows the brand and part number for the subject?Keysight Service manual provides only their internal part number, which is 54913-68714, Touchscreen / Display AssemblyAny hint will be greatly appreciated.Thanks

author: coromonadalix
author_rank: Super Contributor
timestamp: June 04, 2023, 11:49:09 am
content: you know you may need to dismantle the unit to try find any part numbers on it ....
Salvaging scope analog stage - Page 1
Forum section: electronics / testgear

author: Marsupilami
author_rank: Frequent Contributor
timestamp: June 03, 2023, 11:23:10 pm
content: Hi All,I’m in possession of 3 high bandwidth, high sample rate (>1GHz, >2.5Gsps) digitizer boards, but all of them are 50Ohm “line” level.I know I could build stuff with sweat and blood, but I was wondering if I could find an easy to gut oscilloscope, throw out the digitizer section and use the analog part to condition the input. Maybe one that has the input section on a separate panel with simple IO to control the paths.Ideas?Thanks!

author: nctnico
author_rank: Super Contributor
timestamp: June 03, 2023, 11:48:14 pm
content: A Tektronix TDS500 / TDS700 series attenuator / amplifier section comes to mind. Good to 1GHz with switchable 50 / 1MHz inputs. AFAIK: In the TDS744A this is a seperate module which could be easely used as an input module for your project. Look for Tektronix part number 119-4092-02 or 119-4092-03 . There are several for sale on Ebay.

author: Marsupilami
author_rank: Frequent Contributor
timestamp: June 04, 2023, 04:07:35 am
content: Quote from: nctnico on June 03, 2023, 11:48:14 pmOh that looks awesome. I wish there were schematics in the service manual or out in the wild. I don't know how difficult the control scheme is to reverse engineer it.

author: nctnico
author_rank: Super Contributor
timestamp: June 04, 2023, 11:10:19 am
content: Quote from: Marsupilami on June 04, 2023, 04:07:35 amThere are component service manuals with schematic for some of these models. You can find these herehttp://www.ko4bb.com/getsimple/index.php?id=manuals. The TDS544A has a seperate attenuator module; the schematics should give some clues about how to control it. The TDS520B has the attenuators on the acquisition board and shows the inner working of the attenuators in the schematics. You'll have to mix & match a bit to get all the info.
Wiha 45215 6000 counts multimeter - Page 1
Forum section: electronics / testgear

author: Hydrawerk
author_rank: Super Contributor
timestamp: June 03, 2023, 05:31:47 pm
content: Hello, what do you think abou the Wiha 45215 multimeter? I think that it was released in 2022.Is it something rebadged? It is not similar to CEM or UNI-T.I am not sure if there is a overvoltage protection for resistance or diode etc. modes...https://www.wiha.com/int/en/tools/electro/measuring-equipment/1801/digital-multimeter-up-to-1-000-v-ac-cat-iv?c=18https://www.wiha.com/media/pdf/a0/bc/45/BA_SB25542_Digital_multimeter_1000_V-AC_CAT-IV_225x105mm_45215_INT_online.pdfIt has NCV. I do not like the shared socket for voltage and mA / uA. There is a danger of burning the 600mA fuse.Wiha 45215 cost about266USD.https://www.tme.eu/cz/en/details/wiha.45215/portable-digital-multimeters/wiha/45215/It is cheaper than small Keysight or Fluke DMMs.https://www.tme.eu/cz/en/details/flk-117/portable-digital-multimeters/fluke/fluke-117/But you can have a Brymen BM789 for266USD.https://www.tme.eu/cz/en/details/bm789/portable-digital-multimeters/brymen/

author: Hydrawerk
author_rank: Super Contributor
timestamp: June 03, 2023, 05:43:16 pm
content: Wiha has more electric measuring equipment, even a clamp meter.https://www.wiha.com/int/en/tools/electro/measuring-equipment/For233USD, you can buy a Hioki DT4256.https://www.hiokiusastore.com/Digital-Multi-Meter-DT4256https://uk.farnell.com/hioki/dt4256/dmm-hh-true-rms-1kv-10a-60mohm/dp/3262307
Fluke Scopemeter 97 / Philips ScopeMeter PM97 - High Pitch Noise with EL Display - Page 1
Forum section: electronics / testgear

author: kblue
author_rank: Regular Contributor
timestamp: June 02, 2023, 09:09:25 am
content: Hello!I recently got a Fluke/Philips ScopeMeter 97 (Philips PM97 to be exact). I already replaced the four problematic capacitors on the display board (two of them already leaked a tiny bit). The new ones don't fit quite perfectly, but SMD work isn't necessarily my forte either. The device works perfectly in all measuring ranges. There are only two problems left:a) One of the Fluke 1:10 probes (the gray one for channel B) makes any channel it its connected to... noisy. With other probes (Rohde+Schwarz) everything is fine on channel B. Which would rule out channel B of the PM97 as a problem. Can such a Fluke probe be repaired in a meaningful way? Probably not, right?b) The other "problem" that makes me suspicious concerns the backlight. As soon as I turn on the backlight, a high-frequency sound is heard. It's kind of like a coil of some graphics cards when the FPS goes too high. This occurs equally with battery operation and mains operation. This doesn't seem right, does it? Mayhaps my replacement SMD Caps are no good (even if measured good). As far as i know, some of them are for the EL Backlight. I could order some quality panasonic SMD caps for another replacement.Best wishes from germany and thanks for any suggestions in advance. Have a nice day!

author: coromonadalix
author_rank: Super Contributor
timestamp: June 02, 2023, 10:20:15 am
content: 1 dont think the probe is repairable ... i would switch for other2 i would try to get an idea of how the backlight driver / dc-dc conveter is made, surely or maybe some bad caps, bit it could mean it is working outside it's frequecy specs ? try to get the working frequency if it's okay or not, i have seen in past the coils vibrating at high frequencies (what you ear)in some case: sillicon heped to eliminate vibration, some rosin injection in the core helped too etc .... i dont see the internals

author: Kean
author_rank: Unknown
timestamp: June 02, 2023, 03:37:32 pm
content: The audible noise with the backlight on is likely coming from the small transformer T1301, which is driven by transistor V1307 which oscillates to generate approx 100V for the EL backlight. There is a feedback loop via a pair of 47V zener diodes for simple regulation. If you have the service manual, then this should be possible to find in the schematic and assembly drawings. Did you change the capacitors in this part of the PCB, e.g. C1302?As suggested above, some silicone sealant or nail polish applied to the transformer coils might help reduce the audible noise if the EL driver is otherwise working fine. This is a pretty common issue as these EL drivers age.
Wanted: FW for IOtech Micro488A (to convert Serial488A to GPIB controller) - Page 1
Forum section: electronics / testgear

author: garrettm
author_rank: Frequent Contributor
timestamp: June 02, 2023, 02:53:20 am
content: Does anyone have an IOtech Micro488A and would be willing to upload the FW? I would like to try swapping the FW in my Serial488A so that it has full IEEE 488 controller functionality rather than the half-assed 488 implementation used for GPIB to serial conversion.As far as I can tell, the Serial488A has all the guts needed for full controller functionality, it's simply gimped via FW for a simpler application.
Which current Rigol/Siglent oscilloscope models are hackable? - Page 1
Forum section: electronics / testgear

author: ee_eh
author_rank: Newbie
timestamp: May 31, 2023, 04:38:14 pm
content: Hi there,I was wondering if someone maintains a list (or knows) which Rigol/Siglent models are hackable.I am considering buying my first scope and cannot decide which model to pick.I love the form factor of Picos, but they are very expensive. Pico 5444D costs around $5000 here in Canada.And for that kind of money, one can buy two Rigols/Siglents with similar or better specs.I'd like to buy the lowest bandwidth in a hackable line and 'upgrade' later.Which Rigol lines are hackable? MSO5000, DHO4000, DHO1000, 7000s, 2000s, 1000Zs?Which Siglent lines are hackable? SDS5000Xs, SDS2000X HDs, SDS2000X Plus, SDS2000X-Es?

author: coromonadalix
author_rank: Super Contributor
timestamp: May 31, 2023, 04:46:26 pm
content: i you had done a good search here, many models would have popped out ...

author: ee_eh
author_rank: Newbie
timestamp: May 31, 2023, 05:25:35 pm
content: Quote from: coromonadalix on May 31, 2023, 04:46:26 pmAre Rigol 7000s hackable?

author: tautech
author_rank: Super Contributor
timestamp: May 31, 2023, 05:34:56 pm
content: Quote from: ee_eh on May 31, 2023, 04:38:14 pmAll these and some others.Currently it's done with unofficial installation of official license codes therefore firmware updates are fully accepted without any need to reapply a hack.

author: Old Printer
author_rank: Frequent Contributor
timestamp: June 01, 2023, 02:38:09 am
content: Quote from: ee_eh on May 31, 2023, 05:25:35 pmThat’s a lot of scope for your first.

author: ee_eh
author_rank: Newbie
timestamp: June 01, 2023, 02:07:51 pm
content: Quote from: Old Printer on June 01, 2023, 02:38:09 amYeah, I know.Do you know if DHO1074, DHO4204 or SDS2104XHDare hackable?

author: EE4all
author_rank: Regular Contributor
timestamp: June 01, 2023, 04:18:38 pm
content: If it is made by man, it is hackable.I suggest researching specific models you are interested in here and elsewhere.
Screen capture on Rigol DP832A - Page 1
Forum section: electronics / testgear

author: spacehen
author_rank: Contributor
timestamp: June 02, 2023, 07:21:12 am
content: Hi all,Is it possible to capture the screen contents using SCPI on the DP832A?I'm referring to the DISPLAY:DATA scpi command that is supported on other Rigol test equipment.Thanks
[SOLVED] Rohde & Schwarz SMG Error 10 - Page 1
Forum section: electronics / testgear

author: Astralix
author_rank: Regular Contributor
timestamp: February 28, 2023, 12:01:17 am
content: Hi!My SMG is insisting on Error 10.It was totally out of alignment and I had to run the full FRN and RF module alignment procedure as it was showing a lot more errors and not giving any useful signal on the output.I figured out that the most problems resulted from the 50MHz control loop being "out of control". As this loop depends of how the unit is operated, the 50Mhz are routed directly to the RF part or through the RF part as a reference for the FM loop and back to the FRN module...However, all errors away, one still left and that is Error 10 which is not mentioned in my copies of the service manuals for SMG/SMH at all. The official error list ends at Error 9.Any idea on that 10?Thanks!

author: Astralix
author_rank: Regular Contributor
timestamp: March 30, 2023, 04:49:01 pm
content: Just let me answer my own question:Error 10 is simply solved by running SPEC 68 function. After a few seconds the SMD / SMH will be back up and running fine.Astralix

author: DavidAlfa
author_rank: Super Contributor
timestamp: May 30, 2023, 06:04:03 pm
content: Hey, thanks a lot for leaving the solution!Had exactly this issue today, the battery went and caused errors 6 and 10.The manual is not very specific about this error, only showed something like "Internal special tables for option xx have been lost".I was starting to have Vietnam flashbacks, my gosh it's gonna take 2 days and 400 calibration steps!Thankfully all it needed was Shift+Special+68+Enter.40 seconds later, done!
Agilent 1152A Active Probe Auto Probe Interface Mod Board - Page 1
Forum section: electronics / testgear

author: RoadRunner
author_rank: Frequent Contributor
timestamp: May 28, 2023, 07:44:06 pm
content: Hello,I have bought some used 1152A probes but As pointed out this forum, These old probes are not really supported well by new Oscilloscope with not fully featured Auto probe interface. As This probe need 4V and Few oscilloscope can not supply 4V as they have fix 5V out. 1152A also does not have probe ID EEPROMSo As suggested by forum members i have made a little Mod board on flex PCB with EEPROM and 4V regulator with High PSSR and low noise.Mod is complete reversible no damage to the board. Not cutting PCB trace or anything like that.1152A is 2.5Ghz probe. EEPROM are programmed with 1158A EEPROM Dump which 4GHz probe.Oscilloscope detect probe as 4Ghz 1158 probe with 1158 EEPROM .I would really love to get it detected as 1157A because it is also a 2.5Ghz Probe.Modifying Hex dump for mode change is quite easy Checksum is on 0x02 Offset.I am little worried that there are two more parameter that oscilloscope read form EEPROM. I Could not understand how to modify them or they even need any modification. I have with me 1156A, multiple 1158A, 1169A hex dump. But i do not have any 1157A EEPROM.I am looking for if some on the forum who has 1157A probe read EEPROM content and help with hex dump of 1157A EEPROM.EEPROM can be read with a raspberry pi or any other eeprom programmer without opening the probe.I can possibly pay with sample of my board to the generous member who could help with EEPROMBoard I made are open source, PCB source and gerbers are feely available and you can read more about it on my blog.https://www.circuitvalley.com/2023/05/agilent-keysight-1152a-active-probe-smart-probe-eeprom-.htmlCan some one please help with 1157A EEPROM Dump?

author: TheSteve
author_rank: Unknown
timestamp: May 29, 2023, 12:09:54 am
content: I'll check and see what eeproms I can find.

author: RoadRunner
author_rank: Frequent Contributor
timestamp: May 29, 2023, 01:09:26 pm
content: Quote from: TheSteve on May 29, 2023, 12:09:54 amThanks, Highly apricate your time.

author: TheSteve
author_rank: Unknown
timestamp: May 30, 2023, 01:59:33 am
content: Hmmm, it has been a lot of years but give this a try.

author: RoadRunner
author_rank: Frequent Contributor
timestamp: May 30, 2023, 06:02:03 pm
content: Thank you for you time. I have not tired it yet. but i believe it will work but i think you have modified 1158A file? because bandwidth field is unchanged. That is issue I have on my hands bandwidth can be changed but there are two more float fields Oscilloscope read from EEPROM. Those two fields I do not understand.I am really looking for 1157A EEPROM Dump to see if those two fields also changes.Check image attached.
Capacitor comparison Sencore LC101, DE-5000, Agilent 4263B - Page 1
Forum section: electronics / testgear

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: May 28, 2023, 04:00:34 pm
content: In case anyone is interested, I attached a file showing the capacitor measurements between a Sencore LC101, DE-5000 and an Agilent 4263B.The capacitors are from an ARCO kit of capacitor standards. All caps are rated for .1%This is just a quick comparison and nothing super scientific.

author: mawyatt
author_rank: Super Contributor
timestamp: May 28, 2023, 06:42:09 pm
content: Nice capacitor kit, where does one find such a quality kit?Good agreement on all 3 LCR metersBest

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: May 28, 2023, 07:58:00 pm
content: Quote from: mawyatt on May 28, 2023, 06:42:09 pmI found this kit on ebay years ago. The wooden box the caps came in was falling apart and the foam on the inside was disintegrating. Luckily, the caps themselves were still in good shape.

author: mawyatt
author_rank: Super Contributor
timestamp: May 28, 2023, 09:08:48 pm
content: Wow that's from way back, seems they are using "mmF" or micro-micro-farad for pFLooks to be Bakelite encased, likely with Silver Mica capacitors?Best,

author: Martin72
author_rank: Super Contributor
timestamp: May 28, 2023, 09:24:25 pm
content: QuoteAt 1khz, all LCR meters I tested were very close.Only at 10khz and above it gets interesting.

author: TimFox
author_rank: Super Contributor
timestamp: May 28, 2023, 09:51:11 pm
content: Quote from: mawyatt on May 28, 2023, 09:08:48 pmActually, Arco quoted small values in mfd, e.g. 0.0001 mfd, in their description on that advertisement.Back then, we called mmf "mickey-mikes".I believe Arco specialized in silver mica capacitors.

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: May 29, 2023, 12:47:08 pm
content: Quote from: mawyatt on May 28, 2023, 06:42:09 pmThe DE-5000 really does a great job especially considering the Agilent will cost you a arm & a leg.The Sencore is okay. The resolution is a little lacking & I have no idea what frequency is being used.
Siglent SDS1104X-U vs SDS1202X-E? - Page 1
Forum section: electronics / testgear

author: pantojazapata
author_rank: Newbie
timestamp: May 30, 2023, 06:36:45 am
content: What is the best choice?

author: Anthocyanina
author_rank: Frequent Contributor
timestamp: May 30, 2023, 07:57:52 am
content: 4 channels is usually more useful than 2 higher bandwidth channels

author: Fungus
author_rank: Super Contributor
timestamp: May 30, 2023, 10:43:29 am
content: 4 channels.

author: coromonadalix
author_rank: Super Contributor
timestamp: May 30, 2023, 11:04:46 am
content: 4 4 4 4 lollmore practical indeed
ET5410 Firmware STM32F103VCT6 - Page 1
Forum section: electronics / testgear

author: andyB2022
author_rank: Regular Contributor
timestamp: May 27, 2023, 04:44:53 pm
content: Hi, unfortunatlley I've messed around with the NTC of my load and managed to get the pin that measures the voltage drop for OTP (over voltage temperature) internally shorted. The load turns on normally, but it is stuck in OTP mode...Anyone out here that can help me and extract the hex from their unit?

author: coromonadalix
author_rank: Super Contributor
timestamp: May 27, 2023, 10:04:27 pm
content: ask himhttps://www.eevblog.com/forum/testgear/east-tester-et5411a-(and-et5410a)-electronic-load-schematic-reversed/

author: andyB2022
author_rank: Regular Contributor
timestamp: May 28, 2023, 06:33:46 am
content: Thanks.

author: andyB2022
author_rank: Regular Contributor
timestamp: May 29, 2023, 04:56:10 pm
content: Anyone out here that can help me to extract the firmware off my STM32? I've ordered a Chinese STLINK programmer but I don't have the knowledge to dump it. I assume it is also locked from reading so some sort of a glitch has to be done to bypass RDP.I have watched some youtube videos of people being successful to dump the entire firmware, so I know it's possible with the right tools and knowledge.
Thandar LA4800 32 Channel Logic Analyser-Screen replacement/upgrade? - Page 1
Forum section: electronics / testgear

author: djsb
author_rank: Super Contributor
timestamp: May 27, 2023, 10:34:35 am
content: I've dug out an old TTI Thurlby thandar LA4800 logic analyser out of storage.https://www.brltest.com/pdf/pdf_analyzers/687.pdfIt fires up OK (battery needs replacing-no problem). However, the screen is very tired and worn out. Now I'm wondering if new life could be breathed into it if I could somehow fit a 9 inch Raspberry Pi screen to it?https://www.ebay.co.uk/itm/271635467596?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268676&toolid=10044&_trkparms=ispr=1&amdata=enc:16HsFN4UoSRqgsyHwgU5DUg82&customid=2aa923b7-4e1e-457d-a325-e95b6a970cf9Am I being crazy? Here is a brief description from the linked service manualhttp://w.ko4bb.com/getsimple/index.php?id=download&file=06_Misc_Test_Equipment/Thurlby_TTi/Thurlby_Thandar__LA3200_LA4800_Logic_Analyzer_Service_Manual.pdfQuoteI've not done any physical measurements yet as it's early days. Any thoughts? If you need any further info, please let me know.Thanks.

author: djsb
author_rank: Super Contributor
timestamp: May 27, 2023, 02:15:29 pm
content: Just found this that gives more insight into the CPUhttp://musictechnologiesgroup.com/blog/?p=293

author: djsb
author_rank: Super Contributor
timestamp: May 28, 2023, 08:01:53 pm
content: Some more info on hacking into a MSM6255 LCD controller.http://dorkbotpdx.org/blog/paul/large_lcd_reverse_engineering/I'm just gathering information that MIGHT be useful for now. The PJRC website may have additional information as well.

author: nctnico
author_rank: Super Contributor
timestamp: May 29, 2023, 09:14:10 am
content: I have done DSTN to TFT replacements but it is not easy. You'll need a CPLD (or small FPGA) with an SRAM to sample the exisiting display data (likely a 4 bit or 8 bit parallel bus with clock, hsync and vsync signals) and then convert this to signals that can drive a regular TFT screen. Sometimes the display data is PWM modulated to achieve various pixel intensities which means you need to capture several frames (2, 4, 8...) to make 1 TFT output frame. You'll only need 3 bit for the colors towards the TFT screen though. It all starts with capturing a few frames worth of display data and analyse the contents.I'd look into how the backlight is working first and if that isn't fixable or OK, I'd look for a direct replacement of the display. Maybe you can find a cheap one that is better.
OWON VDS1022I Video trigger mode Line number not working in Linux - Page 1
Forum section: electronics / testgear

author: tom5357
author_rank: Newbie
timestamp: May 29, 2023, 04:29:39 am
content: Love the scope as software is available for Linux. Only problem I have is the NTSC line number selection under Video trigger mode does not work in Linux. I have tried the original Windows software and it works fine under Win7. I am pretty sure I am not messing anything up. Any suggestions?Thanks,Tom

author: modoran
author_rank: Regular Contributor
timestamp: May 29, 2023, 05:45:17 am
content: Windows software works under wine ?
Rohde & Schwarz HMP2030 - Page 1
Forum section: electronics / testgear

author: calvingloster
author_rank: Regular Contributor
timestamp: May 28, 2023, 02:59:11 pm
content: Reading the datasheet of the HMP2030 I can't tell if it does startup sequencing, as in start outputs spaced at specified timing intervals. Does anyone know?Secondly would this be a good power supply to buy for general purpose bench lab supply or is it too specific and possibly limited in functionality as compared to other supplies?Looking at the current readout resolution, it seems like it's not that great relative to others and only does 100uA. I would have like to measure sleep currents of 40pA etc.Would you recommend something else in this price range?
Phase Angle Oscilloscope reading  - Page 1
Forum section: electronics / testgear

author: threephase03
author_rank: Contributor
timestamp: May 28, 2023, 01:37:28 am
content: Hi AllDoes anyone know of any oscilloscopes that can display the phase angle between two signals without having to adjust lines etc.Cheers in advance

author: Anthocyanina
author_rank: Frequent Contributor
timestamp: May 28, 2023, 02:44:23 am
content: the rigol 1054z, the keysight 1000x series, the analog discovery(more its software, so all the waveforms compatible devices) all have phase between 2 channels as a predefined automatic measurement that you just have to enable under the scope's measurement options. i mentioned those 3 as those are the ones i have that have the phase masurement, but i would think most other modern oscilloscopes also have automatic phase angle measurement

author: threephase03
author_rank: Contributor
timestamp: May 28, 2023, 03:36:05 am
content: Thanks mate, ill check those out. Much appreciated

author: Andreas
author_rank: Super Contributor
timestamp: May 28, 2023, 05:17:22 am
content: Hello,should be possible with every scope with math functions (even if there is no dedicated menue):https://www.picotech.com/support/viewtopic.php?t=10569https://www.picotech.com/support/topic31641.htmlhttp://lab.fyi/oscilloscope_math_channels/accurate_phase_shift_calculation_formula/index.htmlwith best regardsAndreas

author: ADT123
author_rank: Regular Contributor
timestamp: May 28, 2023, 05:35:02 am
content: Whilst the above post is still correct the most recent version of PicoScope 7 can also plot a graph of the phase change between 2 channels using the built in phase maths channel function. See oscilloscope phase measuremes articlehttps://www.picotech.com/library/oscilloscopes/phase-measurements-and-math-channels

author: threephase03
author_rank: Contributor
timestamp: May 28, 2023, 06:28:45 am
content: Quote from: ADT123 on May 28, 2023, 05:35:02 amThis looks pretty sick, tempted to buy it just to have fun with it.Cheers mate

author: jasonRF
author_rank: Regular Contributor
timestamp: May 28, 2023, 01:06:35 pm
content: Andreas and ADT123 - thanks for posting about the new features in Picoscope 7! I have been one of the users that has requested this feature at least a few times, and I had not realized it had been released. I just now downloaded the latest 'Early Access' and there it is!Cheers!jason
I want to buy my first oscilloscope, help! SDS1102CML+ vs Rigol DS1102Z-E - Page 1
Forum section: electronics / testgear

author: pantojazapata
author_rank: Newbie
timestamp: May 27, 2023, 06:13:23 am
content: Hello everyone!, I am an electronic engineering student from Colombiaand I want to buy a basic but complete oscilloscope. I'm between 2 options]:1. SDS1102CML+ ($319)2. Rigol DS1102Z-E ($279)Del rigo strikes me that it can decode some signals such as UART and its memory depth of 24 MptsWhich one do you recommend and why?thanks!

author: BillyO
author_rank: Super Contributor
timestamp: May 27, 2023, 02:48:01 pm
content: Have you considered saving a bit more money and getting something like the SDS1104X-U? It's only about 25% more money for a hugely better scope.

author: kcbrown
author_rank: Frequent Contributor
timestamp: May 28, 2023, 06:39:04 am
content: Quote from: pantojazapata on May 27, 2023, 06:13:23 amIf the choice is between the Siglent 1102CML+ and the Rigol 1102Z-E, it's no contest. The Rigol is far and away more capable than the Siglent. They're essentially a generation apart.You should read the spec sheets for both. The measurement capabilities alone on the Rigol far outweigh the Siglent, as does the display (intensity-graded), the triggering functions (far more), the math functions (quite a few more), the sample memory (an order of magnitude more), the waveform update rate, etc.I've had the 1102CML and the Rigol 1054Z (the 4 channel version of the scope you're looking at). It's no contest between the two.
Bohlin BRS VOR Rheometer System Teardown 1990 - Page 1
Forum section: electronics / testgear

author: oz2cpu
author_rank: Frequent Contributor
timestamp: May 28, 2023, 09:26:49 am
content: amazing system 52kg for the main unit ! all is made ultra solid,it was used to measure material properties,at a local biolab unit made by the Swedish company Bohlin.Full teardown video here :https://youtu.be/KiemwsTcHso
Need help for using of RTB2004 Oscilloscope - Page 1
Forum section: electronics / testgear

author: Frank_MV
author_rank: Regular Contributor
timestamp: May 26, 2023, 07:58:18 pm
content: Hi experts,When I select a channel on the RTB2004, the previously selected one (using the Ch1, Ch2, Ch3, Ch4 buttons) becomes invisibleWhat do I have to do if I want to see more than one channel at the same time ?in short: how do I see more than one channel on the display ?I could not figure out from the manual.Thanks,Frank

author: egonotto
author_rank: Super Contributor
timestamp: May 26, 2023, 11:19:55 pm
content: Hello,You've had the RTB2004 for over a year and a half and have never used more than one channel?Best regardsegonotto

author: coromonadalix
author_rank: Super Contributor
timestamp: May 26, 2023, 11:38:26 pm
content: have you played with ch1 ch2 ch3 ch4 buttons, when you push 1 2 3 times etc ....and you should have done some search and you would have obtained all the infos you need, took me under 5 minutes ??https://www.rohde-schwarz.com/ca/manual/r-s-rtb2000-user-manual-manuals_78701-402707.htmlhttps://scdn.rohde-schwarz.com/ur/pws/dl_downloads/pdm/cl_manuals/user_manual/1333_1611_01/RTB_UserManual_en_12.pdf

author: Frank_MV
author_rank: Regular Contributor
timestamp: May 27, 2023, 09:24:24 am
content: Quote from: egonotto on May 26, 2023, 11:19:55 pmI had simply forgotten about it, the last few months I have actually only needed one channel.With my old analog Hameg is the switchon on of an additionaql channel much easier ;-)

author: Frank_MV
author_rank: Regular Contributor
timestamp: May 27, 2023, 09:25:58 am
content: Quote from: coromonadalix on May 26, 2023, 11:38:26 pmThanks a lot :-)
Rigol DS1000Z 500M memory depth Option - Page 1
Forum section: electronics / testgear

author: vladsol
author_rank: Regular Contributor
timestamp: May 26, 2023, 06:46:14 am
content: On the Rigol website (https://www.rigolna.com/products/digital-oscilloscopes/1000z/), I found a mention of the software option "500M memory depth." However, I cannot find any information about it. Does anyone know about this option? How does it work?

author: mwb1100
author_rank: Frequent Contributor
timestamp: May 26, 2023, 08:28:04 am
content: That's a mistake. The DS1054z used to come with 12M standard and an option to upgrade it to 24M. Some time ago most of the optional features of the DS1054z, including the upgrade to 24M, were made standard.

author: vladsol
author_rank: Regular Contributor
timestamp: May 26, 2023, 08:36:58 am
content: Yes, I was surprised.I wrote an email to help@rigol.comAnd here is what they replied to me:QuoteYes, that didn't clarify things. So I will wait for an answer to the question of what exactly this option is

author: RoGeorge
author_rank: Super Contributor
timestamp: May 26, 2023, 09:30:33 am
content: "Yes" what? What was the text in your email to Rigol?Maybe there is a new hardware version of the DS1000Z series, with bigger RAM.

author: CosteC
author_rank: Regular Contributor
timestamp: May 26, 2023, 09:50:02 am
content: I suppose only way to do it is to quote this optionMaybe I can upgreade my old unit to 500 M. It would be nice. More memory than best scope in work.

author: vladsol
author_rank: Regular Contributor
timestamp: May 26, 2023, 12:42:14 pm
content: Quote from: RoGeorge on May 26, 2023, 09:30:33 amMy question was: Hello. On the rigol.com website, I found a mention of the "500M memory depth" option on the page describing the Rigol DS1000Z series oscilloscopes. Can you please tell me if this is a software option?

author: Fungus
author_rank: Super Contributor
timestamp: May 26, 2023, 02:19:27 pm
content: Quote from: RoGeorge on May 26, 2023, 09:30:33 amNope. No way. Not happening.They'd have to upgrade the processing power 10x to match.Must be a typo.

author: Njk
author_rank: Frequent Contributor
timestamp: May 26, 2023, 08:09:29 pm
content: Quote from: vladsol on May 26, 2023, 12:42:14 pmYou'd received a reply from the AI bot. How it can be taken seriously

author: vladsol
author_rank: Regular Contributor
timestamp: May 26, 2023, 08:32:01 pm
content: Quote from: Njk on May 26, 2023, 08:09:29 pmI'm not certain that Wei Zheng (Technical Sales Engineer, RIGOL Technologies, linkedin:https://www.linkedin.com/in/wei-zheng-9b46a6126) is a bot, but it's possible :-)

author: DaneLaw
author_rank: Frequent Contributor
timestamp: May 26, 2023, 10:29:30 pm
content: Do it, take the optional 500M, same depth value as MSO8000Typo