hybridfree/eevblog-posts huggingface dataset:
micsig cp2100b or micsig cp503b - Page 1
Forum section: electronics / testgear

author: pasha
author_rank: Contributor
timestamp: November 30, 2024, 09:58:54 pm
content: Hi, I will buy a current probe to use in SMPS applications and the application frequency will be 700khz at most.Should I buy micsig cp2100b or cp503b?It is very nice that the cp2100b has 70A rms, but if I will miss various situations during switching, I will prefer the cp503b. Which do you think is the most suitable solution? thanks.
How to Test the Relay? - Page 1
Forum section: electronics / testgear

author: 222Lab_Test222
author_rank: Frequent Contributor
timestamp: November 25, 2024, 10:17:49 am
content: I have got a hand on this PhotoMos Relay AQV201.How to know whether it is working fine or not?

author: fzabkar
author_rank: Super Contributor
timestamp: November 26, 2024, 04:25:22 am
content: See page 10 of the datasheet:https://docs.rs-online.com/0ed2/0900766b800b6015.pdfI would use output configuration 1a, with a DC load and connection B. I would alternate the load between the top and bottom MOSFETs.

author: 222Lab_Test222
author_rank: Frequent Contributor
timestamp: November 26, 2024, 05:36:08 am
content: Quote from: fzabkar on November 26, 2024, 04:25:22 amAlright, thanks
Lecroy WaveSurfer 24Xs Disk Image? - Page 1
Forum section: electronics / testgear

author: Plasmabot
author_rank: Newbie
timestamp: November 10, 2024, 03:52:01 am
content: Hi all,A couple of weeks ago I found an intact Lecroy Wavesurfer 24Xs in my university's ewaste area. I was able to turn it on and get it to post but it complained about a disk boot failure.Upon cracking it open I discovered that it actually didn't have a hard drive.So I bought one and I'm trying to reinstall the software on a brand new drive. I've read online that the hard drive contains calibration data on a separate partition from windows, and this data is mandatory for the Lecroy software to work. Everyone who's done an HDD -> SSD swap on these scopes stresses that its of utmost importance that you don't lose this data.Problem is, I don't have the original hard drive. Am I screwed?If someone owns this scope can you make a disk image and send it to me?Thank you so much.

author: DaJMasta
author_rank: Super Contributor
timestamp: November 10, 2024, 05:27:35 am
content: If it's the same as the WP7k scopes (also using XStream), you can do a clean install with an extra partition for the cal data to save to, install XStream, open up the service options with the pin code, and tell it to run the calibration routines. At least with those scopes, no external equipment required as the stored data is basically a lengthy self cal.

author: Plasmabot
author_rank: Newbie
timestamp: November 12, 2024, 08:52:53 am
content: Thank you! It turns out you are correct and I was able to install Windows and XStream, and XStream was able to launch with an empty D partition. It just complains about being inaccurate when it launches without calibration data.I would like to do the self cal, do you know how I can find the pin code?

author: LEER333
author_rank: Contributor
timestamp: November 25, 2024, 08:50:03 am
content: Ha ha, I just have it, but I don't know how to send 1.53G, can your machine work?
SIGLENT SDS 1202X-E Button issue - Page 1
Forum section: electronics / testgear

author: Electronic Technologist
author_rank: Newbie
timestamp: November 25, 2024, 07:58:48 pm
content: Hello All. I've owned a Siglent 1202X-E for 3 1/2 years and have only fired it up 110 times. It's always been on a UPS along with my other Siglent Equipment. I finally got around to using it to decode serial data from an Arduino controller. I was setting up the trigger and the decode modes when I noticed that the 3rd soft key from the left on the bottom set of keys wasn't responding when pressed to change the Data Length from 8 bits. You are supposed to be able to press it, have it highlighted on the screen, and turn the intensity knob to vary the bit length. I contacted an engineer from Siglent to find out how to change the bit length and quickly concluded the scope was not responding to the key. I asked if there was a goodwill warranty as the scope had only been started 120 times since it was new and he said nope. I took it apart right down to the nuts and bolds and cleaned the membrane keys and the keypad. I reseated all of the ribbon cables and checked for any cold solder joints on the header from the keypad etc. All clean. My question is, has anyone experienced this issue with the front 6 soft keys on the 1202X-E ? I have the latest firmware and I even tried rolling it back with no luck. This is so very disappointing, as I hadn't really used it that much. Thanks.

author: tautech
author_rank: Super Contributor
timestamp: November 25, 2024, 08:11:38 pm
content: Quote from: Electronic Technologist on November 25, 2024, 07:58:48 pmWelcome to the forum.Siglent NA might have the keypad membranes in stock.Ask him for price and availability.

author: modoran
author_rank: Regular Contributor
timestamp: November 25, 2024, 10:09:20 pm
content: Are you sure it is the keypad fault ? These usually can be repaired. Check by shorting the pcb contacts directly to see if the scope responds.
FUSE Tektronix PS 5010 - Page 1
Forum section: electronics / testgear

author: frantisek
author_rank: Regular Contributor
timestamp: November 24, 2024, 06:19:42 pm
content: Hello colleagues! Please advise me what to replace the fuses in the TEK PS 5010 power supply. The original marking is:159-0055-00 MDL 3AG 2,5A and 159-0003-00 MDX 1,6A 250V.Do I understand correctly that the trip time is 1 second for MDL and 25 seconds for MDX? It's all about what and how to replace the MDX ones. Thank you very much in advance for your advice!

author: AVGresponding
author_rank: Super Contributor
timestamp: November 25, 2024, 06:08:36 pm
content: Yes, pretty much. The trip time should be qualified by a multiplier of the nominal current (eg trips in 1 second at 2xIn), but a 1 second trip time would be a "normal" fuse, and a 25 second time would be a "T" or "slo-blow".EDIT: Always replace with equivalent or better voltage and breaking capacity; don't use glass fuses for this, use ceramic body ones
Coaxial cable, as a "high BW passive probe" - Page 1
Forum section: electronics / testgear

author: points2
author_rank: Regular Contributor
timestamp: November 25, 2024, 04:03:16 am
content: Hi,I used the search engine but I found no thread related to that... so, here it is.Why no info / thread about about it ?It's weird to me given the price of high BW active probes... I have 2 1GHz active probes but à 1kEur/unit I can't pay higher price.So, I went back from "nice" active 1GHz active to explore : coax cable as a high BW probe.And so far so good !What's your experience about a basic coax cable as a probe ?

author: shabaz
author_rank: Frequent Contributor
timestamp: November 25, 2024, 04:25:47 am
content: By 'coax as probe' do you mean a resistive (I.e. Z0) probe?If you Google 'Z0 probe' you'll come across lots of hits, including ones on this site.

author: jonpaul
author_rank: Super Contributor
timestamp: November 25, 2024, 04:45:33 am
content: We used a 50 Ohm scope plugin/input or term, and a coapx BNC direct to a gen or source.For probe, The Zo Probe is easily made.BNC>><<Coax (we used RG/174/u) <> 950 Ohm 1% at tip.Makes a 10:1 Zo probe cost <1$Reccconend the excellent 1980s Tektronix Circuit Concepts booksOscilloscope Provbe Circuits ConceptsOscilloscope Probe Measurementshttp://w140.com/tekwiki/wiki/Concepts_Serieshttps://www.davmar.org/TE/TekConcepts/TekProbeCircuits.pdfhttp://archive.org/details/tektronix_Tek_Probe_MeasurementsFor cable properties see Belden.comEnjoy!Jon

author: ebastler
author_rank: Super Contributor
timestamp: November 25, 2024, 07:51:44 am
content: Quote from: points2 on November 25, 2024, 04:03:16 amhttps://www.eevblog.com/forum/projects/lo-z-probe/https://www.eevblog.com/forum/beginners/diy-1x-oscilloscope-probe/https://www.eevblog.com/forum/blog/eevblog-1367-5-types-of-oscilloscope-passive-probes-compared/https://www.eevblog.com/forum/projects/passive-isolated-z0-prove-design-critic-welcomed/https://www.eevblog.com/forum/testgear/making-an-201-coax-probe/https://www.eevblog.com/forum/testgear/dc-coupled-high-bandwidth-passive-probe/I'm sure there are more.

author: jonpaul
author_rank: Super Contributor
timestamp: November 25, 2024, 09:39:56 pm
content: We bought many TEL 10X Zo probes P61536 at cost $35..55https://w140.com/tekwiki/wiki/P61563.5 GHZ the best!Jon

author: joeqsmith
author_rank: Super Contributor
timestamp: November 26, 2024, 02:24:04 am
content: Quote from: ebastler on November 25, 2024, 07:51:44 amLast one I madehttps://www.eevblog.com/forum/testgear/12-ghz-active-probe-project/msg5006290/#msg5006290
Using an Oscilloscope diagnosing motor problems  - Page 1
Forum section: electronics / testgear

author: sparkyinak
author_rank: Contributor
timestamp: November 19, 2024, 08:05:40 pm
content: I am looking for some assistance with using my scope for diagnosing electric motors as another tool in my bag sort of speak. Scopes are not normally considered as a field expedient tool however cost and size for scopes have come way down so the industry is on the cusp of new ways of doing things. The downside is there is not a whole lot of information out there.I did find a couple of articles that discuss using a scope's Fast Fourier Transform (FFT) setting as a spectrum analyzer to measure background noise. However, the articles do not provide any useful information like recommended settings or have very little on what one should or should not see on their scope. Does anyone have some working experience using scopes on electric motors for detail analysis?I am currently dealing with an intermittent problem with a large 200hp motor that I am pretty sure is bad and will likely need rewinding like 99% certain mainly through the process of elimination. The problem is the customer has been burned by another contractor for $15,000 dollars already and a full rewind will be about $20,000 already.

author: ptluis
author_rank: Frequent Contributor
timestamp: November 20, 2024, 12:19:38 am
content: Quote from: sparkyinak on November 19, 2024, 08:05:40 pmwhy don't you capture more cycles to check if it's a random or sequential problem?

author: Brad O
author_rank: Regular Contributor
timestamp: November 20, 2024, 04:29:09 pm
content: Tektronix has a document on motor measurements with a scope (attached). It's written for an on-scope software option, but the connection diagrams and measurement descriptions may be helpful for you. It's fundamentally possible to make all these measurements without the software option.What stands out to me is that your issue starts on a rising phase then appears on the falling phase before showing up briefly on the next rising phase. That is not what I would expect if a short were occurring, but I'm not a motor expert. Are the time differences between the error appearing on the different channels consistent? Or how consistent are the waveforms across multiple stalls? I also notice after the issue appears your voltage low level is higher than before, possibly indicating some extra impedance has appeared?

author: --Oz--
author_rank: Regular Contributor
timestamp: November 25, 2024, 04:44:54 am
content: Scope current probes give some good info.Camera IR guns with display can be very helpful (not scope related).Give more details on "intermittent" issue with this motor.
Fluke 87 shows "F88" when turning on - Is it bricked? - Page 1
Forum section: electronics / testgear

author: matmeier
author_rank: Newbie
timestamp: November 26, 2024, 06:17:36 pm
content: Hi all,recently the knob of my fluke 87V broke away. I decided to repair it by printing my own knob.While testing the new knob, the dmm was open and the battery was inserted. I tried to turn the knob and unfortonatly turned it backwards (below OFF)Now when turning on the dmm it showsF88followed byBATT, or justF88followed by----.Is the dmm bricked or is there a way of recovering the dmm?Yes stupid me turning the dmm on while it is not fully assembled....
Micsig CP2100A aux USB socket question - Page 1
Forum section: electronics / testgear

author: PwrElectronics
author_rank: Regular Contributor
timestamp: November 24, 2024, 08:28:17 pm
content: Just got one of these and checking it out.I have it plugged into a Tek TDS3034C scope's USB socket. The probe appears to power up fine and I checked it with some DC currents its working.I noted a USB socket on the side of the probe amplifier and thought maybe I could stick my USB thumb drive in there for scope data saves as the probe is taking up the socket on the scope itself.Put thumb drive in there and scope cannot see it. The spec sheet for the probe only says that said socket is 5v DC output. Does this mean it is not doing anything else other than power pass through so no plugging memory stick in there? So, I would need to plug in a USB hub to the scope directly and the probe and flash stick into sockets from there to get both to work?

author: PwrElectronics
author_rank: Regular Contributor
timestamp: November 24, 2024, 08:48:45 pm
content: Ok so experimentation I think I have the answers....So, I plugged a 4 way USB hub/expander into the scope and then the probe and the flash stick into the hub. Still not seen by the scope.Used a AC mains to USB 5v adapter to power the probe and then plugged flash stick into the scope directly (as usual). Scope sees the stick.The answer here seems to be this probe cannot be powered from the scope if you also want to save data off the scope to a USB stick. You need to power the probe separately and only plug your data stick into the scope directly.

author: Martin72
author_rank: Super Contributor
timestamp: November 24, 2024, 10:23:17 pm
content: Hi,QuoteExactly.
New OWON ADS3000 (8bits) and ADS3000A (12 bits)  oscilloscope - Page 1
Forum section: electronics / testgear

author: sly2538
author_rank: Newbie
timestamp: November 24, 2024, 02:27:42 pm
content: Hello everyone,Does anyone have any information about the new OWON ADS3000 8-bit version and ADS3000A 12-bit version oscilloscopes?Performance and price somewhere?Thanks
HELP: Cancelling split screen, Rigol DS1102E - Page 1
Forum section: electronics / testgear

author: AussieBruce
author_rank: Regular Contributor
timestamp: November 30, 2024, 07:58:28 am
content: Hello, Somehow I've got my Rigol into a split screen mode, there are two traces of Ch1, one above the other (see pic), with blue bars at the top LH and RH side. I've tried everything to get back to a single trace without success. The manuals on the web don't mention split screen. Can anyone assist?

author: AussieBruce
author_rank: Regular Contributor
timestamp: November 30, 2024, 08:32:06 am
content: Found it. You depress the screen brightness knob. (who would have guessed?)

author: Caliaxy
author_rank: Frequent Contributor
timestamp: December 01, 2024, 03:45:42 am
content: Looks like the "Zoom" mode. What happens if you press the Horizontal Scale knob?
EMC Partner Transient 2000 ERROR ERR5L33E - Page 1
Forum section: electronics / testgear

author: elestronico
author_rank: Newbie
timestamp: November 22, 2024, 12:23:19 pm
content: Hello everyone,First of all, thank you and congratulations for a such a beautiful and productive website.I´m having an issue with the Surge generator module on my Transient 2000.The message displayed is as follows:Generator malfunction==============High-Voltage overshootAccording to the manual, this error is issued as ERR5L33E.Any help would be much apricated.Elestronico.

author: Harry_22
author_rank: Frequent Contributor
timestamp: November 24, 2024, 08:46:39 am
content: Hi!First of all we should exactly understand what is the meaning of "overshoot".There are only one overshoot is mentioned in the manual. No any "undershoot" but only "no high-voltage".Is undershoot also considered here as an overshoot?I'm inclined to believe that the more common fault may be a high-voltage undershoot.In any case begin from an internal inspection. High voltage usually leaves traces...PSHave you controlled the surge waveform?
Pin protrusion in commercial SMA cable assemblies - Page 1
Forum section: electronics / testgear

author: matthuszagh
author_rank: Frequent Contributor
timestamp: November 23, 2024, 01:20:14 am
content: I finally got around to using a Maury A027 gage kit to measure a number of SMA cable assemblies I purchased (unfortunately all were purchased prior to the purchase of the gage kit). I was pretty shocked to find that almost all of them failed spec and did so through pin protrusion (6/8 CentricRF, 1/1 Crystek, and 3/4 Mini-Circuits). These weren't cheap cables either. Some of the Mini-Circuits cables had over 5 mil of protrusion.I also measured some really nice cables I have (Gore PhaseFlex from eBay) and unsurprisingly those were spot on what they should be.I was mostly under the impression this is not something I needed to worry about if I wasn't buying cheap Amazon/etc. cables.Is this really that pervasive? What do people do for cables? It seems one approach is to order cables with the expectation that most will need to be sent back.I sunk a good chunk of money into these cables. I'm trying to return them, but it's years later so that may be no good. Lesson learned I suppose.

author: Simon
author_rank: Unknown
timestamp: November 23, 2024, 01:00:01 pm
content: see:https://www.eevblog.com/forum/testgear/pin-protrusion-in-custom-sma-cable-assembly/msg5723685/#msg5723685
Service Manual for Leader 8060 - Page 1
Forum section: electronics / testgear

author: Psychodad49
author_rank: Newbie
timestamp: November 22, 2024, 03:39:37 pm
content: I'm looking for a service manual for a leader oscilloscope 8060. The search is more difficult than expected. Nothing can be found on the internet. Can someone help me? Thank you.

author: coromonadalix
author_rank: Super Contributor
timestamp: November 22, 2024, 05:20:09 pm
content: http://www.tequipment.net/pdf/Leader/LS8050_manual.pdfa 8050 could have some similarities
Tektronix 4 Series B (MSO44B) impressions? - Page 1
Forum section: electronics / testgear

author: bytejammer
author_rank: Newbie
timestamp: November 08, 2024, 09:20:48 am
content: Hi all,I was wondering if anyone here has had the chance to try theTektronix 4 Series B(MSO44B or MSO46B) oscilloscope.It is hard to find impressions, reviews, or even videos on the 4 Series B outside of Tektronix’s own content.If you’ve used it, I’d love to hear your thoughts!Thanks!

author: bytejammer
author_rank: Newbie
timestamp: November 22, 2024, 04:48:25 pm
content: I found a couple of videos that give something of an impression of the responsiveness of the UI due to the new processor in the B series.Single video:Playlist (in Portuguese):

author: coromonadalix
author_rank: Super Contributor
timestamp: November 22, 2024, 05:18:33 pm
content: looks like a Miscig
Rigol DHO series doesn't have "Measurement History"? - Page 1
Forum section: electronics / testgear

author: KD4PBS
author_rank: Contributor
timestamp: November 20, 2024, 08:39:44 pm
content: I pulled the trigger and went ahead and "upgraded" to a Rigol DHO804 last week. For the past 5 years or so my daily driver has been a trusty Rigol 1054Z. I thought I could retire it and gift it to a new budding tech but now I'm realizing that it appears the DHO series dropped theMeasurement Historyfunction, which I used to utilize often with the 1054Z in tracking medium-term (up to several minutes) phase shift between frequency standards to aid in hacking them to a GPSDO standard. I've searched the DHO manual for the term, and poked around the scope for over an hour in search of this function, but it appears to not be there. Hopefully this is due to my own ignorance, and they just renamed it and buried the function deeper.Has anyone found the similar function on the DHO?Oh, and am I the only one who keeps wanting to type "DH0:" when writing about this scope or is that just a brain glitch that only we old Amiga guys from the 80s tend to do?-Matt

author: 2N3055
author_rank: Super Contributor
timestamp: November 20, 2024, 11:04:35 pm
content: It does not have it.

author: thm_w
author_rank: Super Contributor
timestamp: November 20, 2024, 11:09:51 pm
content: You'd have to write an external program, in python or similar, to grab the measurement data for you and plot it on a PC.

author: KD4PBS
author_rank: Contributor
timestamp: November 21, 2024, 08:51:50 pm
content: Indeed. That would be rather clumsy, unless one integrated the program to be able to run on the scope itself.That's unfortunate.Thanks for confirming, 2N3055.-Matt
Fluke 117 'F11- Err' is it possible to repair? - Page 1
Forum section: electronics / testgear

author: chebo
author_rank: Contributor
timestamp: November 21, 2024, 03:05:01 pm
content: My Fluke 117 started showing an 'F11- Err' error when turned on. I think his firmware crashed.It broke after I tried to measure the voltage of its own battery with it. When you touch the minus of the battery with the "-" probe, the display goes out. After several touches, the device began to show this error. (Does anyone want to repeat it?)Is it possible to repair? Maybe replace the controller? They are available on Aliexpress. But it should probably already be programmed for this model?

author: Fungus
author_rank: Super Contributor
timestamp: November 21, 2024, 04:23:08 pm
content: Yeah, don't do that...https://www.eevblog.com/forum/testgear/fluke-87v-_bricked_-when-probing-own-battery/

author: BeBuLamar
author_rank: Super Contributor
timestamp: November 21, 2024, 05:37:18 pm
content: And also Fluke doesn't repair the 11x series meters. If under warranty they would simply replace it but they said they don't repair them.

author: chebo
author_rank: Contributor
timestamp: November 22, 2024, 08:09:01 am
content: Ok, i got it, thanks! )))
Siglent 1032X and EasyWaveX: Odd Behavior - Page 1
Forum section: electronics / testgear

author: seedpress
author_rank: Newbie
timestamp: November 21, 2024, 06:19:27 am
content: We recently acquired a new Siglent 1032X. Still learning to use it, and so far we are pleased. One oddity has manifested, however:A custom waveform exported from EasyWaveX to the 1032X is seemingly displayed incorrectly (not sure which one is malfunctioning.)I’m posting some screenshots, but a short explanation may be helpful, as follows. In the two screenshots of EasyWaveX, you’ll note that although the numerical X,Y coordinates of the two waveforms are identical, in one case the X axis is at the bottom of the display while the other is centered in the middle. This is due to the first having “0 Volt” offset in the input CSV file, whereas the second has a “1volt” offset.When these two distinct CSV files are imported into the 1032X, the waveform of the first one, Bobtest1.csv, becomes an AC waveform, whereas (as seen below) Bobtest2.csv imports correctly as a pulsed DC waveform.The bottom line is that, under some circumstances, it seems that EasyWaveX and the Siglent 1032X will output different signals. In this case, it happens with Bobtest1.cvs.Did I make a mistake?

author: TheDefpom
author_rank: Frequent Contributor
timestamp: November 21, 2024, 06:30:05 am
content: Check the termination setting, should it be 50 Ohm?

author: seedpress
author_rank: Newbie
timestamp: November 21, 2024, 07:22:27 am
content: Scott,I am using 50 termination. The 1032X display shows that the problem csv, Bobtest1, actually IS an AC signal. The original--in EasyWave, is pulsed DC. Easywave opens Bobtest.csv as pulsed DC, whereas the SDG 1032X sees it as AC. Same file; different results.seedpress
Siglent SDS1104X-E logging issue: same project, new issue - Page 1
Forum section: electronics / testgear

author: sparkyinak
author_rank: Contributor
timestamp: November 23, 2024, 06:18:41 am
content: I attempted to do a MEASUREMENT DATA LOGGER using RMS measurements on all 4 channels (see attached pictures). I set the timing to 0.1 seconds and attempted several logs and for some reason the logging, even though it started alright but the measurements would start randomly and sporadically not record the data. Longer the test lasted, the worse it got in 3 of the 4 channels. I also ran a SAMPLE DATA LOGGER and there was no missing data of any kind of distorted signal that I figured could be creating havoc with too much data at one time but that wasn't it. I even slowed down the sampling rate and remove two channels and but the problem still persists. Other attempts logging with the scope seem to have issues to see the data to record it on the far right of the screen. The readings kept going in and out showing "***" often, like when the voltage when up on the first 3 channels thing the 4th (green) channel by far did best and for the most part was consistent but it did cut out a few times. That lead was a different type and settings than the first 3.I checked the lead connections and they seemed to been well connected to the loads. With all the missing information makes the data as a whole useless. Any ideas? It's a new meter. Hopefully it's not defective. Wondering if there's any thing I can do about it. Thank you in advance.

author: tautech
author_rank: Super Contributor
timestamp: November 23, 2024, 08:28:26 am
content: Attached pictures ?Another thread on the same subject ?https://www.eevblog.com/forum/testgear/siglent-sds1104x-e-oscillioscope-measurement-logging-issues/Have you looked for answers in the main threads:https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/https://www.eevblog.com/forum/testgear/siglent-sds1104x-e-in-depth-review/Have you tried setting a measurement Gate ?
Tektronix VX1410A - Page 1
Forum section: electronics / testgear

author: Mynameisntdj
author_rank: Newbie
timestamp: November 15, 2024, 12:49:57 am
content: Well I wanna know if anybody knows a company that can repair the Tektronix VX1410A cages? I got in contact with Tektronix and they mention that it's obsolete and there is no replacement. So now I'm looking at other repair sources. Any help pointing me in the right direction would help a lot.

author: calibrationfixture
author_rank: Regular Contributor
timestamp: November 18, 2024, 07:40:42 am
content: Hi Mynameisntdj,When the Power Supply isn't working you can use the one of a Standard TLA7016. Both use the same Power Supply Module (119-5553-00). See also Page 9-2 of attached Document. I said Standard, because there are also High Power TLA7016's which have another Mains Connector and Partnumber.Calibrationfixture

author: Mynameisntdj
author_rank: Newbie
timestamp: November 18, 2024, 04:41:05 pm
content: Thanks a lot for that info. I'll search for one to purchase. I have about 3 or 4 of these I've accumulated at work over the years with the same problem.

author: dietert1
author_rank: Super Contributor
timestamp: November 18, 2024, 04:57:24 pm
content: We used Tektronix logic analyzer and CPU plugins in a HP VXI crate successfully. I mean if you can get any working VXI crate, that should work as wellRegards, Dieter

author: gslick
author_rank: Frequent Contributor
timestamp: November 18, 2024, 09:57:30 pm
content: Quote from: Mynameisntdj on November 18, 2024, 04:41:05 pmI have some TLA711/720/721 VXI mainframes that I don't use. I'm not sure if they all have the same 119-5553-00 power supply. I would have to check. I might consider parting the mainframes out for just the power supplies. They are easy to remove. The power supplies are heavy and shipping probably wouldn't be cheap, but still reasonable. Shipping an entire VXI mainframe would probably be too expensive to be reasonable.

author: Mynameisntdj
author_rank: Newbie
timestamp: November 20, 2024, 12:26:38 am
content: Thanks I'll keep that in mind. If I can prove that it truly is a power supply issue I can probably convince some of the higher ups to look at purchasing your stock. I currently have the unit open on my work desk picking apart the supply

author: Mynameisntdj
author_rank: Newbie
timestamp: November 20, 2024, 04:04:50 am
content: So power supply was not the issue. Found a faulty 555 timer on the backplane PCB. Replaced and fixed. 1 fixed 3 or 4 more to go.
EEVBlog Store CP2100B and HVP70 - Page 1
Forum section: electronics / testgear

author: MildInductor
author_rank: Regular Contributor
timestamp: November 19, 2024, 03:19:06 am
content: Hi, I’m looking at getting a current clamp and a differential probe and was considering the CP2100B and HVP70 sold on the EEVBlog store. They are both out of stock. I believe there was a thread talking about them potentially being replaced, but I can’t find the thread. Are they going to come back in stock anytime soon?
Agilent DSO54832B anyone hacked this scope? - Page 1
Forum section: electronics / testgear

author: profun
author_rank: Newbie
timestamp: November 18, 2024, 11:53:39 am
content: I recently bought a Agilent DSO 54832B oscilloscope at the second-hand marketDid anybody figure how to enable higher memory options?Low serial numbers (like mine) do have up to 16Mpts already on board but mine does not have any memory option and only has 4Mpts enabled.A software key enables 04 and 08 memory options which I really need . Has anybody figured how to do that?

author: tv84
author_rank: Super Contributor
timestamp: November 18, 2024, 12:41:41 pm
content: Read here:https://www.eevblog.com/forum/testgear/agilent-mso-500060007000-anyone-hacked-these-scopes/msg368082/

author: profun
author_rank: Newbie
timestamp: November 19, 2024, 01:14:23 am
content: Quote from: tv84 on November 18, 2024, 12:41:41 pmThank you for your response！But the thread did not mention the cracking method for the 548XX series oscilloscope, only discussed the MSO series.
did the cost of wire insulation (high impedance) meters drastically fall? - Page 1
Forum section: electronics / testgear

author: coppercone2
author_rank: Super Contributor
timestamp: November 17, 2024, 07:46:41 pm
content: I think I renember looking for a insulation tester a long time ago and it was kind of unaffordable. I thought it was ridiculous that the thing you need to test a compressor chassis insulation was so expensive.Now I see decent tools in the $200 and things like BTmeter for $50 (1kV)I feel like 10 years ago the prices were like 10x higher. Am I wrong?I feel like this tool got so cheap it belongs in a beginner repairs shop now. I feel somewhat blind sided by extremely low price of some of these HV meters.
Fnirsi dso-tc3 M-tester mode not working - Page 1
Forum section: electronics / testgear

author: holmerz
author_rank: Newbie
timestamp: November 17, 2024, 08:21:16 am
content: HelloNew to this forum.I have a Fnirsi dso-tc3, that I use for component testing and I'm afraid I've toasted it!When testing resistors and capasitors it says "Cell" and transistors it recognizes as diodes.Can't seem to find any info in the manual on this.Have any had the similar experiences?In advance thanksErik

author: axantas
author_rank: Regular Contributor
timestamp: November 17, 2024, 08:35:50 am
content: There is a Fnirsi Whatsapp Group. They are quite helpful.https://www.eevblog.com/forum/testgear/fnirsi-tc3/msg5459951/#msg5459951I would ask them directly.

author: indman
author_rank: Super Contributor
timestamp: November 17, 2024, 01:58:57 pm
content: Quote from: holmerz on November 17, 2024, 08:21:16 amPlease use the search service on this forum next time to avoid creating duplicate thread in topics.Take a look at this topic, maybe the information in it will help youhttps://www.eevblog.com/forum/testgear/fnirsi-tc3/

author: holmerz
author_rank: Newbie
timestamp: November 17, 2024, 05:58:39 pm
content: Thanks for the links
Wall-powered tester (especially continuity) - Page 1
Forum section: electronics / testgear

author: brandon.arnold
author_rank: Contributor
timestamp: November 16, 2024, 07:33:27 pm
content: Hi all. This may be an unsual ask but I'll give it a shot. Can anyone think of a continuity tester like this:- compact- wall-powered- no battery, no notification that the battery is running out, no auto-off to conserve batteryI spend a lot of my free time reverse engineering PCBs. My environment is usually the couch. The problem I come up against, is my volt meters have batteries that seem to go out very quickly. The majority of the time they sit there unused, but when I need to do a test, I want it to be ready to go. Usually I have to rotate the dial, press a button, put the leads together to make sure it's working. And on top of that, the meter has a battery timeout; basically it will start beeping telling me to turn it off, and will even turn itself off eventually. This is borderline infuriating to meOn the other hand I don't want a giant lab table setup on the end table, here, either.-Brandon

author: brandon.arnold
author_rank: Contributor
timestamp: November 16, 2024, 07:51:33 pm
content: Huh.This OWON one on Amazonmay do.Edit: Just bought. Let's see.I read the manual and it has wall power, can disable auto-off, and does continuity test with a beep.
Bottom, is thermopro the caddilac or there are better units? - Page 1
Forum section: electronics / testgear

author: u666sa
author_rank: Frequent Contributor
timestamp: November 17, 2024, 10:02:55 am
content: Bare with me.In my part of the woods, thermopro preheat is the best. Like nothing better, all the pros use it. iPhone repair, laptop repair, video card repair. If you need BGA work, this is the way to go. We talking about people who use Leica microscopes, in other words wallet has some depth to it.These are individually made, not mass produced, after you order one, you have to wait while they build it for you. English website -https://termopro.ru/en/soldering_products/pcb_preheaters/Russian website -https://termopro.ru/catalog/termostoly_podogreva_pechatnyx_p/termostoly_serii_np/English is kinda basic and outdated, you might need a VPN.Basically question is this. Everyone is using these around here, like I said. But is there something better?I'm asking this Q because I'm moving to the U.S.A.I can't order one of these from the U.S.A., the only option is to buy it now and take it with me.I'll be doing notebook and iPhone repairs, BGA work is a must. I hate doing BGA without the bottom, especially laptop GPUs and CPUs.At my work I use thermopro. At home I don't have a bottom. This one was on my must gets, but now question is if there are better things that are accessible to me?
HP 6632B CV+CC Error - Page 1
Forum section: electronics / testgear

author: Astralix
author_rank: Regular Contributor
timestamp: November 16, 2024, 11:41:29 am
content: This is probably the wrong place to post this help for repair, so I copied it herehttps://www.eevblog.com/forum/repair/hp-agilent-6632b-showing-cv-and-ccThe forum doesn't let me delete this post. Sorry!
NanoVNA H4 attenuator reading jumping - Page 1
Forum section: electronics / testgear

author: u666sa
author_rank: Frequent Contributor
timestamp: November 16, 2024, 09:28:01 am
content: I have NanoVNA H4, with SD card, version 4.3, bought it fromhere, it's the real thing, not fake. Firmware as from Hugen 1.2.27, I upgraded it to DiSlord 1.2.40, behavior did not change.Basically, after calibration, when two cables connected together, I'm measuring -759 umdB to 515 umdB (and prior to firmware upgrade it was showing 0 dB to -0 dB).Then I insert20 dB 25W attenuator, and I'm getting values jumping like so..... -20.55 dB, -20.54 dB, -20.56 dB. It stays mostly on -20.55 dB.Then I insert30 dB 2W attenuator, -30.05 dB, -30.02 dB, -30.01 dB, -30.03 dB, -30.04 dB.What's going on? What's up with jumping?Then, if I decide to use these attenuators in TinySA Ultra to measure power, I also have power jumping. For example TID-RADIO H3 is jumping from 5.5 watts all the way to 6.1 watts.
Victor 98a+ calibration - Page 1
Forum section: electronics / testgear

author: Dezmond2
author_rank: Contributor
timestamp: November 14, 2024, 03:26:03 pm
content: How to calibrate Victor 98a+

author: valcher
author_rank: Contributor
timestamp: November 14, 2024, 06:23:09 pm
content: Hello!I have a Victor 79A+ multimeter-calibrator, but I don't know if it will help you, the devices are different.To enter the calibration mode, you need to press the REL and RIGHT buttons on the switched-off device and turn the switch to the parameter where you need to calibrate. Range selection - RANGE, scale start/end - REL, data saving - Hz. Each calibrated range is saved separately.Voltmeter calibration example:Range 0...5 volts.Close the inputs - 0 volts.Press - REL / go to the beginning-end of the scale /Apply 5 volts to the input.Press - Hz / save calibration /Press - RANGE / select the next range /и.т.дPlay around with the keys, your device may have other entry points into calibration. But be careful, mine has a three-key combination to reset the entire calibration, I got caught.Удачи!

author: Dezmond2
author_rank: Contributor
timestamp: November 14, 2024, 08:05:04 pm
content: And what happen after "turn the switch to the parameter where you need to calibrate"? DMM turn on?98A+ not have LEFT button. On pic you mark RIGHT button? )

author: valcher
author_rank: Contributor
timestamp: November 14, 2024, 08:20:06 pm
content: That's right, the right one, I did something wrong.While holding the keys, move the switch to measurement and the device switches to calibration mode.

author: Dezmond2
author_rank: Contributor
timestamp: November 14, 2024, 10:23:05 pm
content: Hold + Range + Power = Calibrating Mode

author: Dezmond2
author_rank: Contributor
timestamp: November 15, 2024, 02:34:55 am
content: I have chines guide for calibrating...

author: valcher
author_rank: Contributor
timestamp: November 15, 2024, 03:32:14 pm
content: Great, the calibration method is the same.

author: Fungus
author_rank: Super Contributor
timestamp: November 15, 2024, 08:02:32 pm
content: Quote from: Dezmond2 on November 15, 2024, 02:34:55 amYou can put it through google translate:https://translate.google.com/?sl=auto&tl=en&op=docs
Siglent SDS1102CML+ stuck on boot screen? - Page 1
Forum section: electronics / testgear

author: bugeyed
author_rank: Newbie
timestamp: September 15, 2021, 01:43:57 am
content: My SDS1102CML+ O-scope was purchased March 6, 2018.I used it twice & packed it away. Today I set up my new bench & found that the O-scope is stuck at the boot screen. I tried the Power-On press Math button repeatedly without success. I have read that there may be a USB recovery operation that is available. Can someone shed some light on this?Regards,Kev

author: tautech
author_rank: Super Contributor
timestamp: September 15, 2021, 02:01:39 am
content: Welcome to the forum.PM sent.

author: p4linnovation
author_rank: Newbie
timestamp: February 11, 2022, 01:42:40 am
content: Quote from: bugeyed on September 15, 2021, 01:43:57 amI am having the same issue with my 1052DL+. Did you ever find a fix for it?

author: dorkoti
author_rank: Newbie
timestamp: October 23, 2024, 08:37:32 am
content: Hello, I just got the Siglent SDS1102CML+ but same problem, it is stuck on the bootscreen. I tried to hit the math button but it didn't help.SO i wondered if @tautech could help with the mehtod to recover from this issue.TYA.

author: tautech
author_rank: Super Contributor
timestamp: October 23, 2024, 09:40:31 am
content: Quote from: dorkoti on October 23, 2024, 08:37:32 amWelcome to the forum.Siglent EU HQ have the tools to help you.info-eu@siglent.com

author: grvitya
author_rank: Newbie
timestamp: October 24, 2024, 08:15:08 pm
content: My Siglent SDS1102CML+ have same problem, it is stuck on the bootscreen. Trick with Math button doesn't work.

author: tautech
author_rank: Super Contributor
timestamp: October 24, 2024, 10:05:26 pm
content: Quote from: grvitya on October 24, 2024, 08:15:08 pmWelcome to the forum.As above, contact German EU HQ and they will provide the recovery package.

author: w5egm
author_rank: Newbie
timestamp: November 16, 2024, 02:11:03 am
content: Hello everyone!!I have a Siglent SDS1102CML+ that was pruchased in April of 2021 and hasn't been heavily used. It got bbricked after turn it on 36 times, sent back to Siglent USA for repairs, and got bricked again a week after I got it back...Is there any way to get it back in business without send it to Siglent USA???Thanks in advance

author: tautech
author_rank: Super Contributor
timestamp: November 16, 2024, 03:53:53 am
content: Quote from: w5egm on November 16, 2024, 02:11:03 amWelcome the forum.A couple of ways...1. The good ol' Math button bashed repeatably at boot < try several times.If no success, GOTO #22. PM me with the SN# and your email address.
Multitester TC1 - IR decoding function upgradeable ? - Page 1
Forum section: electronics / testgear

author: Martin72
author_rank: Super Contributor
timestamp: March 09, 2019, 09:42:03 pm
content: Hi,Today a chinese Multitester TC1 has arrived - Nice little thing, including an ir-code testfunction:Unfortunately, it "knows" only one code, the hitachi ir code…Much more useful would be the decoding of RC-5 or RESC-80 codes.Are there a chance to tune this thing up, maybe it already exists a hack for it ?Martin

author: ballen
author_rank: Regular Contributor
timestamp: November 15, 2024, 11:02:37 am
content: Martin, I have the same tester and the same question. Did you or someone else figure out a way?

author: Martin72
author_rank: Super Contributor
timestamp: November 15, 2024, 07:36:56 pm
content: I hadn't followed this up, but at the time I had found an RC-5 code tester:https://www.sprut.de/electronic/pic/projekte/rc5test/index.htmA very informative website in other respects as well (last updated in 2018, who knows how much longer it will be around).
HP-53131A Korean vs US manufacture - Page 1
Forum section: electronics / testgear

author: stephen.x.thomas@pm.me
author_rank: Newbie
timestamp: November 11, 2024, 11:10:51 pm
content: I have two HP-53131As in excellent cosmetic condition that were clearly well-kept instruments. The Korean-made unit is likely newer (serial KR912007xx) with five calibrations and the US-made unit (serial 3546A092xx) has ten. Initial testing shows they are equally accurate. I did a complete tear down and cleaning for both. The capacitors look good in both units and their build quality is visually similar. The US-made one has marginally better BNC ports, perhaps from less wear.I planned to upgrade and keep only one but not sure which to choose. I considered upgrading both and see if one improves more, but I thought it a fair question to ask if anyone has more experience with these units.

author: TERRA Operative
author_rank: Super Contributor
timestamp: November 12, 2024, 06:22:21 am
content: I'd keep the newer one if it passes all self tests and performance verification.If there were any improvements made between the two serial numbers, it'll have them, and the VFD potentially won't have faded so much (depending on individual run-time, but replacement VFD's are available on ebay etc).It's not too hard to replace the BNC's as they are still available. I replaced all the BNC's and the serial/GPIP ports on my 53132A just 2 days ago. They were damaged and rusted, now they are shiny and new.

author: stephen.x.thomas@pm.me
author_rank: Newbie
timestamp: November 12, 2024, 06:39:49 pm
content: The newer one has firmware 3703 and the older unit has 3427. Viewing side by side, the older one actually has a much higher contrast VFD, so maybe I will swap the front panels and start modding there.

author: TERRA Operative
author_rank: Super Contributor
timestamp: November 12, 2024, 10:21:43 pm
content: If you have access to a chip programmer (and maybe new chips if the ones in your instruments are PROM, not EEPROM), here is the latest firmware.Youmayneed to recalibrate after the update, but it's not too hard to do.

author: stephen.x.thomas@pm.me
author_rank: Newbie
timestamp: November 12, 2024, 11:45:24 pm
content: This is great advice, thank you. The newer unit has four AM27C010-150JC chips. I had to remove a label to identify them. I sourced AT27C010-70JU which is a one-time write but it should be the last time these units are modded.

author: TERRA Operative
author_rank: Super Contributor
timestamp: November 15, 2024, 03:53:13 pm
content: They should work fine.
Fluke 382A Reference Board - Page 1
Forum section: electronics / testgear

author: rajeshvs
author_rank: Newbie
timestamp: November 03, 2024, 03:17:52 pm
content: Hello Everyone,I’m looking for a manual or parts information for the Fluke 382A. The reference board (382A-401) in my unit is different from what is described in the available online manuals. I have checked various sources, but most of them only cover the older reference board version(313A-418).I have two burned resistors on my board:R123 – BurnedR114 – Half baked, perhaps 470Ω?This issue is likely caused by CR106 Zener (?) too.If anyone could share a photo of a good reference board, or share the component values, or provide a schematic/manual for this revision, I would greatly appreciate it.Thank much in advance!

author: wn1fju
author_rank: Frequent Contributor
timestamp: November 04, 2024, 12:34:42 pm
content: Here is a picture of the reference board.R123 looks to be brown-orange-red and measured 1.3K in circuit.R114 looks to be yellow-violet-red and measured 4.5K in circuit.CR106 looks to be a 6V Zener, measured by putting 5ma across it from a current source and measuring the voltage drop (not precise).I hope this helps. This piece was buried under 10 pieces of heavy test equipment and a pain in the back to get to!!!

author: rajeshvs
author_rank: Newbie
timestamp: November 04, 2024, 08:36:41 pm
content: Wow, this is great—you made my day!Thank you so much, wn1fju, for your time and effort. I really appreciate it.

author: rajeshvs
author_rank: Newbie
timestamp: November 04, 2024, 11:10:57 pm
content: Since I'm at it, here’s an internal pic. The reference diodes are buried deep inside. The failed resistors are part of the oven temperature sensing circuit.

author: DG5NGK
author_rank: Newbie
timestamp: November 14, 2024, 03:30:27 pm
content: I can confirm this, see picture below taken from my 382A with SN 82906Could measure slightly different values:R114: 4.7kOhm+-10% according to the color code, measured 4.26kOhm in circuit. (4.40kOhm with Q106 removed)R123: 1.3kOhm +-10% according to the color code, measured 1.29kOhm in the circuit.I assume the board from wn1fju was previously repaired? I can see some differences at R109, Q106, C102 and C103.My PCB looks untouched. The protective varnish is present on all solder joints.It would be nice if someone could provide the schematic and parts list for the 382A-401 master ref module.Or a more recent user manual for the 382A. My last one is dated November 1, 1964 and is from SN 240.It shows updates up to SN 300 (code W) and SN 325 (code U)Interestingly, there is an auction with SN 326 (www.ebay.com/itm/355750647388)It already appears to have no R8 calibration trimmer on the back. But it still has the labeling for it. So it should already have the 382A-401 inside. But maybe it was replaced later.And there's one with SN714 (www.ebay.com/itm/266783594476)This one looks pretty shiny, and also has the 382A-401 in it.Maybe someone can take a look at the 383B user manual? It might contain the same reference module, as it is very similar to the 382A.