hybridfree/eevblog-posts huggingface dataset:
Ipm6300 Power Quality Analyzer - does anyone have one? - Page 1
Forum section: electronics / testgear

author: Bakaman
author_rank: Contributor
timestamp: May 04, 2024, 07:27:07 am
content: Hi Chaps, being a bit of a nerd, I'm interested in measuring all sorts of stuff and have a collection of gear. A while back whilst I bought this handy power analyser which is sold in the UK by RS PRO, which tends to mean low-end. Anyway, I want to measure dips and/or spikes on a 230V supply on a project that has been blowing input surge protector-related fuses on some battery charger rectifiers. The 15A fuses link with an MOV that starts to clamp at 800v pk, so I'm thinking that this is a relatively high energy surge, but only seems to happen infrequently - 7 different sites blew a module in 5 months across 100± railway sites, never twice in the same location.But this is not a question about the surge, but about the ipm6300. There isn't much information about it. It logs current, voltage power etc. But it also has a fast transient logging mode - that records dips and swells and outages, which might be what I'd like to leave on site for a few days for collecting generally noisy supplies.I've got the software but I'm not sure if it is running OK. I can download the transient file list into the Windows programme, but there doesn't seem to be anything happening when it is there, and there is no option to save or see an image or data points re surge magnitude or shape etc.So does anyone have one of these beasts?

author: Bakaman
author_rank: Contributor
timestamp: May 04, 2024, 07:49:45 am
content: The device itself apparently detects transients as fast as 40us, which would seem to indicate that it is detecting fast peak transients like my Fluke 289.I can set a threshold (5-99%) which vary by that amount from a particular rms voltage, and displays a time stamp and an H, L, or 0 for each event, and its duration in terms of supply frequency cycle counts. Not much use in itself other than indicating that there was a swell, dip, or outage at that time - how big wast it? was it a peak voltage of 375v, or 575v? Anyway, hopefully the device has also recorded more info with a number of samples for each event that I can save and view or analyse on a pc.I know that I'm expecting a lot from a small cheap device, it might not do what I want which is OK. There is no info in any help files, nor explanations in any manuals.I just want to know if anyone has had better success in obtaining transient info out of this than I have.Thanks.
Siglent SDG6000X changing duty cycle glitch - Page 1
Forum section: electronics / testgear

author: KlausKragelund
author_rank: Regular Contributor
timestamp: May 01, 2024, 11:30:40 pm
content: HiI have a couple of SDG6022X, hacked of course, bought partly since I would use the synchronization feature between 2 units to do 3 phase PWM for switch mode control.I did some tests on one unit, and when the duty cycle is changed it makes a nasty glitch, the output goes low for some time. That means I cannot use it for controlling switch modes and other nice stuff.Anyone know if this glitch is fixed? (version I have is 6.01.01.36)Anyway, I have a dirt cheap china Feeltech arb generator, and it does not make a glitch. Go figure....RegardsKlaus

author: tautech
author_rank: Super Contributor
timestamp: May 01, 2024, 11:40:46 pm
content: Quote from: KlausKragelund on May 01, 2024, 11:30:40 pm2 years older than the most recent version:https://int.siglent.com/upload_file/zip/firmware/Spectrum_analyzer/SDG6000X_V6.01.01.36R8_EN.zip

author: H.O
author_rank: Frequent Contributor
timestamp: May 02, 2024, 05:19:27 pm
content: I don't see it mentioned in the revision history in the file tautech linked to but why not try updating just in case.I know it does not help but my Rigol DG4162 acts in the same way, very bad indeed when testing locked antiphase PWM motor controler. Really annoying on an expensive instrument. It's been discuessed here before and IIRC other DDS type generators do it too while some don't.On the SDG6000X, is it possible to modulate the dutycycle using either the other channel or external input and if so, does THAT work as one would expect?

author: Performa01
author_rank: Super Contributor
timestamp: May 03, 2024, 10:43:38 am
content: My SDG6052X with FW 6.01.01.36R8 doesn't output any glitches when the duty cycle of a square wave is altered.Duty cycle modulation works flawlessly of course, as demonstrated here (reply #1148) with the help of a Track Plot of the duty cycle measurement across a record:https://www.eevblog.com/forum/testgear/siglent-sds800x-hd-12-bit-dsos-coming/msg5436737/#msg5436737EDIT: Hardware Version: 01-00-00-78-38

author: KlausKragelund
author_rank: Regular Contributor
timestamp: May 03, 2024, 01:11:13 pm
content: I updated to 6.01.01.36R8 as listedIt still has the glitch. Occurs every time as far as I can see. See attached imageI have a SDG6022X, Hardware 03-00-00-78-38Settings:Square, 100kHz, 5Vpp, 2.2VDC offset, 10% dutyThe other SDG I have, does not produce the glitch, same HW and same SW versionThe one that produces the glitch has serial number that is higher (newer instrument). See image of versions.
AimTTI QPX750SP product recall - Page 1
Forum section: electronics / testgear

author: jc101
author_rank: Frequent Contributor
timestamp: March 21, 2024, 11:38:10 am
content: It seems there is a recall for the QPX750SP Power Supply Serial Numbers 580064 to 585809.A link to the recall pdf is here ->https://resources.aimtti.com/docs/Aim-TTi_QPX750SP_Recall_Notice_Mar2024.pdfText of the recall noticeQuote

author: woody
author_rank: Frequent Contributor
timestamp: May 03, 2024, 08:30:15 am
content: My QPX7540 was affected by this problem and has been updated since.The process was painless. I contacted AIM-TTI. Pick-up by UPS, return a couple of weeks later.The only snag was that UPS missed that this was a return on a repair so they charged me some customs fee. We have Brexit to thank for that I suppose.Anyways, the supply is back and working again. And supposedly safe :-)
Looking for the Wavetek/Meterman/Amprobe HD160B calibration procedure - Page 1
Forum section: electronics / testgear

author: Kosmic
author_rank: Super Contributor
timestamp: May 02, 2024, 08:15:54 pm
content: Hello,I'm looking for the Wavetek/Meterman/Amprobe HD160B calibration procedure.Already have the document for the HD160C but I think the B revision is different.Thanks,
Disassembly of Rigol DM3058 and DM3058E - Page 1
Forum section: electronics / testgear

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:19:09 pm
content: Previously, there were detailed photos of this device on this forum, but they are outdated. I'm posting photos of my dm3058e, I hope they will be useful or interesting to someone.The device itself turned out to be quite pleasant to use. Noise at measurements of 5 ppm, more digits in the interface. A fairly low temperature coefficient of about 2ppm/K. A measurement is sent to the interface in slow mode every 0.5 seconds.The Agilent command mode works crookedly enough.

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:20:46 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:21:53 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:22:38 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:23:17 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:23:53 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:24:26 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:25:43 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:26:26 pm
content: foto

author: Nanitamuscen
author_rank: Contributor
timestamp: April 30, 2024, 04:28:16 pm
content: The photos are voluminous, it does not allow you to upload more than two at a time. I did not upload it to other sites so that the photos would not disappear there.

author: coromonadalix
author_rank: Super Contributor
timestamp: May 01, 2024, 12:05:57 am
content: thksI'm surprised to see an adsp xxxxx processor in there
TDS3000/TDS3000B series scopes calibration experience - Page 1
Forum section: electronics / testgear

author: benj38
author_rank: Frequent Contributor
timestamp: March 22, 2020, 02:16:06 pm
content: Hi guys,Does anybody know how tedious (or not) it is to manually calibrate a TDS3000B series scope?According to the service manual, one needs a DC voltage source, a leveled sine-wave generator, and a fast-rise generator. One then enters the calibration process and keeps feeding the desired inputs from one of these generators to the scope, following the on-screen instructions.While I do not have the generators recommended by the service manual, I do have equipment that I can persuade to generate signals within the same specs (e.g., as a DC voltage source, I can use a lab power supply and a very accurate voltmeter). This, however, can become very tedious if the process calls for hundreds of different inputs.If anybody has experience with this please advise.Thanks in advance!

author: phenol
author_rank: Regular Contributor
timestamp: December 03, 2022, 07:47:17 am
content: I went through the calibration routine of my tds scope as it had channel-to-channel skew issues. I am not entirely sure if it was there in the first place or came as a result of me hacking it to from 3034 to 3064 as described elsewhere on the forum.There are 56 steps, most of which ask you to apply various DC voltages from 200mv to 70V in either polarity on all channels simultaneously.Towards the end it prompts you to feed 80MHz 400mV p-p and 55kHz 200mV pp signals to each channel individually.For the last step you’ll need a negative voltage steep rise/fall time pulse generator going from 0 to -2.2V feeding all 4 channels simultaneously with equal lengths of coax.I had to roll my own generator. it’s that last step i was interested in and it did fix the skew, but it seems you can’t just skip calibration steps and pick any random one you want to execute.

author: dj9ss
author_rank: Newbie
timestamp: April 30, 2024, 01:18:30 pm
content: Hi,I successfully performed factory calibration multiple times on my TDS3032B, after extending it to four channelsThe fast rise time signal was provided by the negative fast rise output of a PG506, so I didn't have to roll anything myselfAll required DC voltages were delivered by Fluke 5101B calibrator. For the 80MHz I could use a E4437 signal generator.For the remaining 55kHz I initially used a function generator, but later I switched to using the output of the I/Q modulator ARB in the E4437.In general the procedure is not critical, however, I observed the software occasionally proceeded to the next step without me pressing any key, causing the step to fail. Fortunately you can easily repeat failed steps.All in all you can perform factory calibration in less than one hour, provided you have everything prepared before starting.Regards
Fluke 187,189 continuity beep sound - Page 1
Forum section: electronics / testgear

author: anddrej
author_rank: Newbie
timestamp: April 29, 2024, 05:56:44 pm
content: Hello,I have different dmm's...Fluke 117, 175, 187, 189, 289 Flir DM92, Agilent U1253b and only at Fluke 187&189 got "distorted" beep sound when checking continuity.Is this really real beep from this meters or it's something wrong?I wanted to ask this so many times in the past but today, as i got another 187 and its same shitty beep.I like to have same as i have on all other Fluke meters...simple as that 🙂

author: coromonadalix
author_rank: Super Contributor
timestamp: April 29, 2024, 06:56:00 pm
content: distorted beep ..... when you move the probes while they touch themselves ?

author: anddrej
author_rank: Newbie
timestamp: April 29, 2024, 07:21:47 pm
content: No..when you just put probes together or even short on plugs

author: mahi
author_rank: Regular Contributor
timestamp: April 29, 2024, 07:42:22 pm
content: It's normal. All Fluke 187/189 have the "chirping" buzzer. It's one of the few things I don't like about the meter.For those not familiar with the 187/189 buzzer, check the Fluke 189 review by N8FDY:https://youtu.be/a4RJ7lZPLBE?t=1585(continuity beeper @ 26:25)

author: coromonadalix
author_rank: Super Contributor
timestamp: April 29, 2024, 08:03:03 pm
content: yep normal for 187 189 ....

author: anddrej
author_rank: Newbie
timestamp: April 29, 2024, 08:36:45 pm
content: Yes i got from many its "normal" but honestly speaking for me its not 😁.It's just annoying chirping sound which makes me thinking that measuring continuity is not right...but hey..obviously it's just me who not lke this.Still wandering why is that only on 187/189 meters...

author: Fungus
author_rank: Super Contributor
timestamp: April 29, 2024, 08:55:47 pm
content: I don't have any data but I always imagined it was to make it easier to hear in a noisy environment.(easier than a single tone)

author: anddrej
author_rank: Newbie
timestamp: April 30, 2024, 06:45:22 am
content: Could be, but for me is strange and obviously im not the only one

author: coromonadalix
author_rank: Super Contributor
timestamp: April 30, 2024, 10:04:41 am
content: love it .... hate it .... that's your choice, or simply change meter model ??There was meter(s) with variable tone upon the read value ... Fieldpiece and some Beckman Industrial had it too, THEY where more annoying than 187 189 lollthe chirping signal come from the meter mcu, unless you find a way or hack the meteri do have 189 meters. i could say i was a bit surprised at first, but i live with that, and it work well, sensitive and fast.

author: anddrej
author_rank: Newbie
timestamp: April 30, 2024, 01:03:44 pm
content: Agree with all what you said.Nah...I'm using 175 for continuity...was just thinking that will be nice to get same "ear pleasant" tone on 187/189
UTG932 testing by multiple instruments with a lot of screenshots - Page 1
Forum section: electronics / testgear

author: bb1
author_rank: Regular Contributor
timestamp: April 27, 2024, 04:58:03 pm
content: UTG932 is popular 30 MHz waveform generator and 100 MHz frequency counter.The attached PDF describes test results for output frequencies up to 90 MHz and the input frequencies up to 185 MHz,as well as some glitches.

author: bb1
author_rank: Regular Contributor
timestamp: April 27, 2024, 05:03:35 pm
content: PDF

author: electr_peter
author_rank: Unknown
timestamp: April 27, 2024, 09:16:43 pm
content: Useful data on UTG932 in pdf. There is a main thread onUTG932/UTG962with detailed info in case you missed it.UTG932 can be easily persuaded to become UTG962. Also, BNC connector replacement is a good idea.QuoteInteresting way to obtain higher frequency output.QuoteCurrent peaks are from inrush current to input caps of SMPS. It is not that bad, there much worse cases where switches fail in time (weld themselves) due to uncontrolled high inrush current.Most powerbanks with <2A should work except those with have very quick overcurrent detection. Solution is to add simple soft-start circuit to limit inrush current.

author: bb1
author_rank: Regular Contributor
timestamp: April 29, 2024, 12:54:17 pm
content: Here is very short Python code to send ARB waveform to UTG. As is it defines 10 sin periods in the waveform, but you can change the formula for "signal" to define any other ARB shape. To send modulation waveform just replace "CARRier" by "MODulate". Of course, you need free Python and numpy and pyvisa packages.import numpy as npimport pyvisarm = pyvisa.ResourceManager()uniGen=rm.open_resource('USB0::yourUTGaddress::0::INSTR')t=np.arange(0,4000,dtype=np.float64)/4000# define waveform , here N=10 sin periods:N=10signal= 32767*np.array(np.sin(2*np.pi*N*t))signal=signal.astype(np.int16)# send to UTGh1=b':115\r\nVPP:1.000000\r\nOFFSET:0.000000\r\nCHANNEL:1\r\nRATEPOS:0.000031\r\nRATENEG:0.000031\r\nMAX:32767.000000\r\nMIN:-32767.000000\r\n:4000\r\n'showName='t1'uniGen.write(':WARB1:CARRier '+showName+' ')uniGen.write_raw(h1+signal.tobytes())
Keysight 34450A Help - Page 1
Forum section: electronics / testgear

author: Louis_C
author_rank: Contributor
timestamp: May 02, 2024, 04:28:25 pm
content: Hello all. I'm looking for some help on a Keysight 34450A. All calibration tests pass except for 100mV AC @ 100kHz. It reads 94.837. The Low limit is 96.700 and the high is 103.3. I tried performing the internal calibration and entering the new corrected reading for this test point and the unit rejects it and fails. I flashed the firmware to the latest version available ( 01.03-01.02). I'm not sure what else to do here. Can anyone give me some advice as to what to look at next? Thanks!

author: Simon
author_rank: Unknown
timestamp: May 05, 2024, 07:01:32 am
content: DO NOT DOUBLE, TRIPLE....... POST. EVERYONE WILL HATE YOU.
TDS 5XXX Series Oscilloscope External screen no trace - Page 1
Forum section: electronics / testgear

author: Amper
author_rank: Frequent Contributor
timestamp: October 29, 2022, 04:18:43 pm
content: Hi!I hope it hasnt already been discussed but im having an issue with my TDS5104. The scope works as supposed and has one external VGA port which also works as it should.The issue is that when i set up the external screen using parameters similar to the internal screen and set the external as the primary in the operating system the scope program executes as it is supposed to, its running and can be operated but will not show the traces.Is there any way to fix this?best regards

author: abel98
author_rank: Newbie
timestamp: January 15, 2024, 12:29:06 am
content: Hello Everyone !Has there ever been an answer to this question ?I have TDS5104 which does not show the traces on MAIN screen.I replaced the acquisition board with "known-good one" but it did not change anything.Everything works and no error codes when running diagnostic. And the cursors show the X-points where the input waveform supposed to cross them .Help, anyone ?? I was searching a lot but seems no one has the same issue !!Best regards !

author: gianrisa
author_rank: Contributor
timestamp: April 28, 2024, 07:59:23 pm
content: Hey you should have two vga output, one it is the PPC outout and the other one is the Main board PC output. The Tekscope doesn't allow high resolution on the screen if you increase the resolution of the external screen you will not see any waveform output.
Which Arbitrary function Generator  Can Hold after generate Arbitrary waveform - Page 1
Forum section: electronics / testgear

author: ElectronicABC
author_rank: Newbie
timestamp: April 28, 2024, 02:49:07 pm
content: For Rigol DG1062Z,output Arbitrary waveform in *.raf then cycle again，but how to hold after the latest point?and I test the Burst mode ,but there is 1ms zero voltage Pulse before it go to Idle (as set ) level.
Firmware update for Gratten ADS1102CAL+ oscilloscope  - Page 1
Forum section: electronics / testgear

author: Sergo
author_rank: Newbie
timestamp: April 23, 2024, 01:18:38 pm
content: Hi allHelp please I wanted to update my device.I've been looking for firmware for Gratten ADS1102CAL+ for a few days now.I wrote to the manufacturer and suppliers of different countries, they do not answer me.I tried to upload the results from other oscilloscopes, but the problem is that my oscilloscope does not open the flash drive, but just gives an error if it does not find the right one.The chip is installed Cyclone® IV EP4CE10 FPGA.Photo attached:

author: tv84
author_rank: Super Contributor
timestamp: April 23, 2024, 02:24:05 pm
content: No need to open a new thread. There are some threads in this forum that detail this precise matter.BTW, if you specified the FW version that you have, probably someone could immediately tell you that there is no newer FW.Be careful when dealing with that device as it's easily "brickable".

author: Sergo
author_rank: Newbie
timestamp: April 23, 2024, 06:56:27 pm
content: Thank you for your replyI tried to upload other firmwares, but it didn't work I ordered a programmer to try to get a dumpCan you please tell me how to find the place where I need to connect the usb ttl?My board is like this (open.jpg)Software Version 1.08Hardware 1.00Product Type ADS11023CAL+Serial NO. 111020S1403103596

author: tv84
author_rank: Super Contributor
timestamp: April 28, 2024, 11:56:00 am
content: This is the only Atten CAL+ FW I ever saw.Version: 1.90.0
Heads up on MicSig Probe - Page 1
Forum section: electronics / testgear

author: watchmaker
author_rank: Unknown
timestamp: April 27, 2024, 09:13:43 pm
content: I was cruising and came across the DP10013 on Amazon. It was $190USD but then Amazon provided a $35 coupon. Of course I had to use it; but check and see if you get offered the coupon. I know for a fact I am not that special (except to my wife)(sometimes).

author: WattsThat
author_rank: Frequent Contributor
timestamp: April 27, 2024, 09:47:47 pm
content: Just grabbed one with the same deal.Thank you very much for posting!

author: KungFuJosh
author_rank: Super Contributor
timestamp: April 27, 2024, 10:24:30 pm
content: That's a decent deal. I have the same probe, but I got it 6 years ago for $115. That's almost $150 now, right? lol

author: J-R
author_rank: Super Contributor
timestamp: April 27, 2024, 11:46:52 pm
content: Looks like it is actually a "SainSmart Official" store-wide sale. So be sure to check out their other items if you have money burning a hole in your pocket...
Agilent 4338B adjustment program - Page 1
Forum section: electronics / testgear

author: brian_stine
author_rank: Newbie
timestamp: September 09, 2017, 03:16:13 am
content: Hi. There is an adjustment program for the Agilent/HP 4338B (Milli-ohm meter). It is used to calibrate the instrument. It has part number Agilent PN 04338-65005. It is no longer available. Does anyone have a copy or know where I can get it? Thanks for any help.

author: TERRA Operative
author_rank: Super Contributor
timestamp: April 24, 2024, 08:06:20 am
content: Epic grave digging of an old thread here, but I'm now looking for this software too if anyone has found a copy?

author: TheDefpom
author_rank: Frequent Contributor
timestamp: April 27, 2024, 10:16:52 pm
content: yeah me too, I just purchased a broken unit (not in my hands yet so it may not even need it).
Help me chose my pogo pin for THM Test Points on my PCB plz - Page 1
Forum section: electronics / testgear

author: fishywisky
author_rank: Newbie
timestamp: April 29, 2024, 08:10:39 am
content: Hello everyone,I have a slight problem. I'm in an internship and don't know much about Pogo pins. I wish to select a type to come and touch the THM test point on the board that is given to me. The test points look like the ones in the linked picture. If anyone could help me, it would be really nice.Have a nice day!(Sorry for my poor English)

author: Kean
author_rank: Unknown
timestamp: April 29, 2024, 10:57:54 am
content: Pogo pins are not normally used with that style of test point. You are generally better off probing without a through hole test point, onto a bare SMT pad or maybe an open through hole pad.There are various head designs like the crown point that can help probe a non-flat surface.That style of test point are not so commonly used these days, except in R&D. You would normally use a hook type test clip with them, like seen in the photo at top right.Are you planning to use pogo pins from above or below the PCB?If you were probing from above, you might be able to use a large concave (inverted cone) head pogo, like a P25-A2 or P100-A2.If probing from below, it would depend on how much the particular style of test points used protrude from the PCB surface.

author: fishywisky
author_rank: Newbie
timestamp: April 29, 2024, 11:52:54 am
content: Thank you, Kean. I will discuss all of this with my internship supervisor.
Fluke RLC - PM6304 serial interface card RS232 - Page 1
Forum section: electronics / testgear

author: minolta
author_rank: Contributor
timestamp: April 27, 2024, 10:45:14 am
content: Hello,who has downloaded firmware (EPROM dump 27C1001 - OTP) for serial interface card RS232 (label on my eprom is PM9549 v 2.2 , but probably could be used similar version too).Has anybody it?I have unit that can not receive command, sending is OK. I have tested all possible, now I need to check FW.I can upload main firmware (from the main board) v. 1.8 (EPROM 27C512) if somebody needs this.Thank you for help!..
VESA mount for Rigol HDO4000 / DHO4000 - Page 1
Forum section: electronics / testgear

author: jwise
author_rank: Contributor
timestamp: April 27, 2024, 04:28:56 am
content: Hi all,On the suggestion (?) of this forum, I got myself a DHO4404. I find that I'm in a bit of a crunch for desk space, so over the past few days, I modeled together a VESA mount for the back of it that attaches where the battery pack that Rigol couldn't be fucked to sell us would have gone.I've attached some photos. If you're in the Bambu universe you can download it from MakerWorld here:https://makerworld.com/en/models/444674Or if you're in the Prusa universe, from Printables:https://www.printables.com/model/858885-rigol-dho4000-hdo4000-vesa-mountOr if you want to mod it for yourself, here's the onshape link:https://cad.onshape.com/documents/bfa89435db8323d375fd32a1/w/511571cd0b08c31e0ffa8b79/e/48ab0b03f2c55600799ae151I made it out of PETG and a bunch of M4 heat stake thread inserts. Probably PETG is the right play because the tabs are relatively thin and you want as much layer adhesion as you can get around them. But if you have an expensive 3D printer and an expensive scope, you can make a decision for yourself as to what kind of plastic you want holding your scope off your desk :-)I have some other cheap-ass test equipment projects that I should get to writing up. Some day...Regards,joshua
CMU200 - Page 1
Forum section: electronics / testgear

author: elettronica52
author_rank: Newbie
timestamp: October 30, 2019, 01:33:49 pm
content: My cmu200 has the failed rf signal generator. The test loop of the inputs fails and also the fm deviation. Everything else works. It gives me no faulty module. I measured the signal at 13.8 Mhz in input rxtx is 20 mV. And there are the various modulations. I measured the output of the sma tx and there is only noise with a very low signal, of a few microV. I sent a 10 Mhz signal to the frontend module and it appears at the output.Has anyone repaired this rxtx module?IZ2GGS

author: markus_jlrb
author_rank: Regular Contributor
timestamp: October 31, 2019, 01:20:59 pm
content: Dear OM IZ2GGS,take a look at MC-Forumhttps://www.mikrocontroller.net/topic/433164#newSome experts for R&S device issues are available there.Good luckMarkus

author: snickers
author_rank: Contributor
timestamp: April 24, 2024, 09:25:45 pm
content: Some experiments with built in FMR6 (i815 chipset) Ethernet adapter.Success!

author: markus_jlrb
author_rank: Regular Contributor
timestamp: April 25, 2024, 05:07:34 pm
content: How you load the C:\NET\NET.CFG during boot?Via Autoexec.bat?Markus
Amber model 3500 distortion / noise measuring set manual / service manual - Page 1
Forum section: electronics / testgear

author: oddbits
author_rank: Newbie
timestamp: April 22, 2024, 08:41:37 am
content: Hi all , hope this is the correct area for this ?Does anyone know where i can get a manual / service manual , for a AMBER model 3500 distortion . noise measuring set . Searched and searched with no luck , can not find any info on web about this units ?.Any info would be greatly appreciated .many thanks..

author: Arts
author_rank: Regular Contributor
timestamp: April 23, 2024, 01:55:46 am
content: Are you sure it's a 3500? I think that was the very first Amber analyzer model, and I'm rather surprised that one made it to the UK. I do have three Amber 3501 analyzers, and I believe that the circuitry may be similar. Mind, these days I have trouble remembering to put on pants before leaving the house, so who knows...

author: oddbits
author_rank: Newbie
timestamp: April 23, 2024, 07:26:33 am
content: yes 3500 , i have 2 , one in fair condition and one in good condition , both have dead battery , one does take power the other does not, so are they worth the hassle and time to try a repair ?, Thinking i may get one good one from the 2 ? , but like i say can not find any info on the web about them.
Issue with EEVBlog 121GW - Page 1
Forum section: electronics / testgear

author: Feliksas
author_rank: Newbie
timestamp: April 21, 2024, 02:58:48 pm
content: Well...today, this happened to me(this is an already desoldered banana socket panel)To be honest, I haven't got the slightest idea where to find a replacement part (I'd imagine it is gonna be pretty specific to this particular multimeter), maybe Dave or someone else could help?

author: coromonadalix
author_rank: Super Contributor
timestamp: April 21, 2024, 04:09:12 pm
content: ask in the 121gw thread or directly send a pm to Dave Jones search "EEvblog" memberlink to send him an emailhttps://www.eevblog.com/forum/pm/?sa=send;u=3

author: DaJMasta
author_rank: Super Contributor
timestamp: April 21, 2024, 08:04:14 pm
content: The entire banana jack assembly ripped out of the meter through the front plastic without breaking the tabs in between?

author: Feliksas
author_rank: Newbie
timestamp: April 22, 2024, 07:24:04 am
content: Quote from: DaJMasta on April 21, 2024, 08:04:14 pmNo, as I've specified under the image, this is an already desoldered assembly, the issue is with the guts of the first (and most used) connector falling right the heck out when pulling the probe outTherefore, there is nothing holding the contact plates together now, which is a recipe for intermittent contact, with the probe wiggling around in the socket...The thing is, it actually broke off, like, during the first week of usage, I tried to glue it back together several times, which worked for a while...but enough is enough, the part needs to be replaced altogether.

author: J-R
author_rank: Super Contributor
timestamp: April 22, 2024, 09:03:57 am
content: Ignore the silly comment from DaJMasta; this is a known issue with some of the 121GW units and Dave will send you a replacement jack assembly.Side note, UEi seemed to actually reduce the inside diameter of the jacks in later units for some reason. For example, units starting with SN#18 are larger than units starting with SN#20. Out of curiosity, what does your serial number start with?

author: Feliksas
author_rank: Newbie
timestamp: April 22, 2024, 09:34:19 am
content: Quote from: J-R on April 22, 2024, 09:03:57 amWill need to check when I'm home, but I do remember that the board revision is dated 2018UPD: Yep, the serial is 1808xxxxx

author: J-R
author_rank: Super Contributor
timestamp: April 22, 2024, 10:37:57 pm
content: Here's the specific notification from Dave of the potentially impacted serial numbers:https://www.eevblog.com/forum/testgear/eevblog-121gw-multimeter-issues/msg2792850/#msg2792850
Yihua 982-iii review - Page 1
Forum section: electronics / testgear

author: griz17
author_rank: Newbie
timestamp: April 18, 2024, 09:10:05 am
content: Hi guys, does anyone have any review on this soldering station? It is 30W/40W JBC clone c210 c115 tips, thanks

author: psitem
author_rank: Newbie
timestamp: May 01, 2024, 03:57:15 pm
content: Well, I took a chance on it since Amazon could deliver the C245 version the next morning. I'm coming from a genuine Pinecil v2 with just the bundled tip. Until a few months ago I'd never touched a soldering iron to something without ruining it, but since needing to... not ruin things... I've probably done a thousand joints adding headers to MCUs and various other boards.The whole thing in the box weights 35 ounces. There are no instructions in the box. Changing settings involves holding one or both buttons while powering on (C/F, English/Chinese, Temp offset). Mine arrived set to F and English. It sleeps at 200C. After a while sleeping the display shows a coffee cup and after a much longer while it turns off completely and the power switch must be cycled. The attachments can attach to either side. The cord material feels the same as every random USB cable on my desk, not as nice as the silicone cable from Pine64.The handle connector is a 4-pin that looks very square to my eyes. Not JBC. Seems like that's typical for Yihua? And the original 982 uses a different 5-pin connection? I think that's going to be a deal-breaker for me.I used the chisel tip to solder headers to 4x Waveshare ESP32-S3-Zero boards with the same random roll of 0.8mm 67/37 1.3% flux from Microcenter that I've been using. My first couple joints at 360C didn't go so great so I bumped it to 370C and it was smooth sailing, no better or worse than I've been doing with the Pinecil set to 360C. I don't have anything to check the tip temperature with so 🤷‍♂️

author: psitem
author_rank: Newbie
timestamp: May 01, 2024, 09:04:50 pm
content: Quote from: psitem on May 01, 2024, 03:57:15 pmI let it sit a very long while and did not experience this "turned off completely" state again, so I guess it may have crashed that time. Or maybe it was user error with the switch but that feels like I'm gaslighting myself. From the 200C sleep to 370C it's 5-6 seconds. In the coffee cup state it seems to power off the iron completely and takes around 10 seconds to reach 370C from room temp. Those include the time for the screen to update to reflect that the iron has been un-docked, which is around a full second. From a cold power on to 370C is about 12 seconds.That's plenty fast for me but it is a bit slower than my Pinecil on a 65W adapter. The temperature displayed has been stable, with no overshoot, while I've used and fiddled with it. My Pinecil jumps around a bit just sitting there.The solder holder bracket is a couple mm too narrow for the dowel, which is the same dowel I received with a Yihua X-2 stand. Nothing a bit of careful bending can't fix but it was definitely closer to square as I received it than after I "fixed" it.
Leader LAG-54 Audio Generator -- Capacitor ID? - Page 1
Forum section: electronics / testgear

author: TimeBandit
author_rank: Regular Contributor
timestamp: April 27, 2024, 06:32:20 pm
content: I'm in the process of replacing the electrolytic capacitors in a Leader LAG-54. The two that I'm wondering about are the 100uF 160V axials in the power supply section. The appearance suggests something unique about them, but I don't know what. A search for Nippon Chemi Con "DL" series doesn't come up with anything. Also, no schematic, parts list, or even user manual is available for this unit (I've contacted Leader too). Thoughts?Edit: I added a (too small) photo grabbed from a thread someone posted about a similar, if not the same, type of cap in an Akai reel to reel deck. It appears the "DL" may equal "Light Disch" written on this other capacitor.
HAMEG HMO-1022 latest Firmware - Page 1
Forum section: electronics / testgear

author: FrickelPit
author_rank: Newbie
timestamp: April 22, 2024, 06:19:06 am
content: Hey Test-Aficonados,I can‘t believe, that R&S not even offering firmware downloads for the EOL HMO oscilloscopes.Does someone have latest firmware and/or programs for the HMO-1022?Happy testin‘!-Pit

author: pdenisowski
author_rank: Super Contributor
timestamp: April 22, 2024, 02:45:47 pm
content: The latest I found internally was:HMO724_HMO1024 Firmware V04.531Would that help? If so, I'll find a way to post it somewhere for you.
Keithley 2000 with strange problems - Page 1
Forum section: electronics / testgear

author: Roebas
author_rank: Newbie
timestamp: April 21, 2024, 12:56:07 pm
content: Hello, I'm new here but I hope there is much knowledge present in this community that hopefully someone can help me. I bought a few weeks ago a Keithley 2000 but the first tests immediately showed that the meter was not working at all as it should. I got a lot of faults performing the self test. I decided to replace all electrolytic capacitors and yesterday I only had fault 401.2 left.Today I tried again and now the meter passes the selftest completely without any fault.But the meter is still not working correctly:1)when I switch on the meter and put it in VAC mode the meter shows a value between 8V and sometimes 130V, even with the inputs shorted. Even if I connect then a AC source the actual value is not displayed. If I then put the meter in "auto" mode, I hear a clicking of a relay and suddenly the meter displays the correct value.2)If I push the front/rear switch in VAC mode, the string "rear" is not displayed. In all other modes (VDC, Ohm, Frequency,...) it displays this string in the display. Although not displayed the string "rear" the meter is indeed displaying the value of the source connected to the rear side.Does anyone have an idea what I could test to find the cause of this problem?Your help would be much appreciated.
Tektronix TDS-3000 looking for firmware version 3.39 - Page 1
Forum section: electronics / testgear

author: matth
author_rank: Contributor
timestamp: April 20, 2024, 06:33:37 am
content: I have a Tektronix TDS-3034 which is running firmware version 1.10 and I need to update this to version 3.39 to do the bandwidth hack.Has anyone got a copy of 3.39 that they would be willing to share with me please ?RegardsM

author: alm
author_rank: Super Contributor
timestamp: April 20, 2024, 12:06:45 pm
content: I found this when searching for TDS3000 3.39:https://www.eevblog.com/forum/testgear/tds-1000-2000-3000-bw-hack/msg1260362/#msg1260362

author: coromonadalix
author_rank: Super Contributor
timestamp: April 20, 2024, 07:57:44 pm
content: and have fun getting some good floppieshad fun to find a few to do an upgradeDo read the text file in the zip

author: alm
author_rank: Super Contributor
timestamp: April 20, 2024, 08:04:39 pm
content: Or if you want to use a more modern USB stick or SD card:https://www.eevblog.com/forum/testgear/tds-1000-2000-3000-bw-hack/msg5397158/#msg5397158.

author: matth
author_rank: Contributor
timestamp: April 22, 2024, 06:37:33 am
content: I got the firmware (thanks to someone that sent it to me) and I have now successfully updated my 3034 to a 3054 with the latest firmware. Now all I need to do is crack open the Dallas chip, put a new battery on that and then replace the dead CCFL tubes.

author: alm
author_rank: Super Contributor
timestamp: April 22, 2024, 02:39:45 pm
content: What was wrong with the firmware uploaded in the thread I linked that you needed someone to send it to you? It might be worth sharing that firmware here.
Metex MXG-9802A software  - Page 1
Forum section: electronics / testgear

author: tomcer34
author_rank: Contributor
timestamp: April 20, 2024, 06:21:07 pm
content: Hi, some year's ago I got from school Metex MXG-9802A. It's very good frequency gen, but I would like to use software for it and discover it's potential. But it seem that it's quite old or Metex went under the soil. I don't know, do you guys have experience with this model and potentially software for it with manual?

author: coromonadalix
author_rank: Super Contributor
timestamp: April 20, 2024, 07:43:09 pm
content: or under this name tooVoltcraft MXG9802AConrad MXG-9802https://www.eevblog.com/forum/testgear/manual-for-tenma-72-6644-function-genfreq-counter/Tenma 72-6644I think you need to find at least the rs232 commands in manuals and see if you can code somethinggoogle search pop many user manuals but they lack pages, not complete

author: alm
author_rank: Super Contributor
timestamp: April 21, 2024, 03:06:05 pm
content: You can find the Conrad manuals (German is the most detailed)hereandhere. It was likely shipped with a floppy disk with software, but I didn't find an archive of that. Since the software required an IBM PC-compatible, it is likely for DOS, so it's doubtful you could run the software on anything resembling a modern PC. Conrad would sometimes have a protocol description on their website, but the product is long discontinued so there appears to be no trace of this instrument on their website.It appears to still be supported by theAbacom ProfiLabsoftware, but I wouldn't recommend spending that kind money on this.

author: coromonadalix
author_rank: Super Contributor
timestamp: April 21, 2024, 04:06:13 pm
content: At least try the demo version ?ProfiLab-Expert40(Demo).exe around 11 megs
Adding Front Panel Connector to Agilent/Keysight DC Communication Source - Page 1
Forum section: electronics / testgear

author: ZGoode
author_rank: Frequent Contributor
timestamp: April 10, 2024, 06:59:24 am
content: I'm working on adding a front panel connector to my 66321B. I was wondering if I should add a shielding braid around the cable since it runs right next to the main power transformer. I'm currently using an unshielded 18awg 5 conductor stranded cable to route the V+, V-, Sense+, Sense-, and Ground. While, I know adding shielding shouldn't hurt anything, I don't know if it is worth it in this case.The main reason I am asking, is I do not have any on hand and would have to order some copper braid if I wanted to do that. If people don't think it is necessary, I probably won't bother.Any thoughts here?

author: Hydron
author_rank: Super Contributor
timestamp: April 10, 2024, 08:02:27 am
content: Not necessary. Anything from the transformer will be mains frequency magnetic fields, you can't easily stop them but they won't cause issues with this anyway. Just keep the sense wires twisted together.I'm working on my own front breakout for a 66309D - going with a box on the side though. Will share designs once done.Finally if you get the chance could you take high res photos of the small board that's connected by flying wires? Am interested in what is on that board, given it's the main difference between the 66309/66311 and the 66319/66321 units.

author: ZGoode
author_rank: Frequent Contributor
timestamp: April 10, 2024, 04:43:37 pm
content: Yeah, I can go ahead and get you some images when I tear the thing back down later today. I gotta take it back apart to put the front label on the panel.

author: vaualbus
author_rank: Frequent Contributor
timestamp: April 14, 2024, 10:55:28 am
content: On the board there is a MOLEX connector used when the option 521 is used, in there you have both output voltage and current; I think what is missing from that connector is teh sense line (saying this because option 521 do no close the sense line when you have the output off, resulting in an "erroneous" reading on the display)So "hacking" that MOLEX connector I guess is way better than having to modify the back too.

author: ZGoode
author_rank: Frequent Contributor
timestamp: April 20, 2024, 03:18:25 am
content: That's good to know. Although I do still want access to the sense lines, so I'm probably going to stick with my current solution.
Siglent SAA 3021 Memory recall. - Page 1
Forum section: electronics / testgear

author: Wendy Moss
author_rank: Newbie
timestamp: April 18, 2024, 03:59:58 pm
content: Hi peeps... I am having difficulty in recalling screen shots on my Siglent SAA3021 Spectrum analyser.Anyone out there found the same ?? and is there a key sequence please.

author: tautech
author_rank: Super Contributor
timestamp: April 18, 2024, 08:05:23 pm
content: Quote from: Wendy Moss on April 18, 2024, 03:59:58 pmIn the File menu, when file type is set to PNG, just press Save then Enter.

author: Wendy Moss
author_rank: Newbie
timestamp: April 19, 2024, 02:18:23 pm
content: Hi Tautech. It was not storing the displays I was having trouble with. it was retrieving them after, to compare. I have now worked it out, after a lot of button pushing. To display a stored file.. PRESS FILE Using the Up/Down buttons select the required file.... Press OPEN / LOAD on the On screen menu. Easy when you know how. It is a shame Siglent do not cover this important feature in their User Manual.

author: tautech
author_rank: Super Contributor
timestamp: April 19, 2024, 09:37:47 pm
content: Quote from: Wendy Moss on April 19, 2024, 02:18:23 pmIs yours the earlier SSA3021X or the touch and mouse capable SSA3021X Plus ?Either way you should be able to Copy/Paste internally saved files to USB and IIRC Cut/Paste also.
reading Keysight 3458A serial number - Page 1
Forum section: electronics / testgear

author: analogRF
author_rank: Super Contributor
timestamp: April 18, 2024, 01:25:24 pm
content: I have a 3458A with the S/N sticker missing.The firmware revision is 9.2Is there any way I can read the serial number of the instrument?ID? only says HP3458A and obviously it does not understand SCPI language

author: Roehrenonkel
author_rank: Frequent Contributor
timestamp: April 18, 2024, 01:52:15 pm
content: Hi analogRF,...try "*IDN?"Good luck

author: analogRF
author_rank: Super Contributor
timestamp: April 18, 2024, 01:55:47 pm
content: Quote from: Roehrenonkel on April 18, 2024, 01:52:15 pmlike I said this instrument does not understand SCPI commands

author: egonotto
author_rank: Super Contributor
timestamp: April 18, 2024, 02:14:18 pm
content: Hello,perhaps the EEVblog Metrology-Forum is a better place for this question.Best regardsegonotto

author: coromonadalix
author_rank: Super Contributor
timestamp: April 18, 2024, 03:56:39 pm
content: Quote from: analogRF on April 18, 2024, 01:55:47 pmsame toughtsthe keysight manual specify ID? and not IDN? for a id request, and it report only the model nothing more it seems,It was asked in another thread here in the pastno SN sticker sound suspicious, these stickers don't remove themselves or fall off easily ?? is it an Fleabay purchase ?

author: wasedadoc
author_rank: Super Contributor
timestamp: April 18, 2024, 04:29:59 pm
content: Quote from: coromonadalix on April 18, 2024, 03:56:39 pmEspecially on an item which lists at the price it does!

author: BU508A
author_rank: Super Contributor
timestamp: April 19, 2024, 05:21:16 am
content: Quote from: analogRF on April 18, 2024, 01:25:24 pmCould you provide us a picture of the rear of your 3458A like this one from xDevs?I'd also recommend to write xDevs a PM or send him an email. Perhaps he can provide you some help.And I think egonotto is right, this thread should be in the metrology section.

author: analogRF
author_rank: Super Contributor
timestamp: April 19, 2024, 11:31:55 am
content: This thread is continued in the eevblog Metrology forum
Measurement:Current compliance/current protection of GPP-4323  - Page 1
Forum section: electronics / testgear

author: Sariel
author_rank: Regular Contributor
timestamp: April 21, 2024, 07:14:34 am
content: Hello all,I have measured GPP-4323 response when it enters CC mode and limits output current by lowering the output voltage.The output voltage reduced from 3V to 1V in about 200ms.Exponentially decline waveform.How can I calculate the GPP-4323 output capacitance? How can I know the discharging resistance of the circuit? What are the common values?The protection time is really slow. Many actual devices can be damaged until CC kicks in.How do power supply manufacturers usually design the output current protection circuitry?Are SMU devices faster when they enter CC mode and if yes, then why? What different circuitry are they using?Have you ever built an external CC to protect your circuits instead of the CC circuitry of the lab power supply?