hybridfree/eevblog-posts huggingface dataset:
Siglent Easy Scope + Windows 11 - Page 1
Forum section: electronics / testgear

author: joeqsmith
author_rank: Super Contributor
timestamp: September 12, 2025, 08:31:37 pm
content: Friend was trying to use this combo and could not get it to work. I tried. Could ping the scope fine, software just will not connect. PC using two Ethernet ports. One dedicated to test. Tried it in admin mode, no luck. Same software / scope on Win 10, works fine. Known incompatibility or is there a trick to getting it to work with Win 11?

author: tautech
author_rank: Super Contributor
timestamp: September 12, 2025, 08:57:23 pm
content: Quote from: joeqsmith on September 12, 2025, 08:31:37 pmAll Easy**** SW has a NIVISA dependency for the required LAN and USB drivers.Instead of the full and bloated NIVISA install just the NIVISA Runtime package will provide the required connectivity drivers.

author: coromonadalix
author_rank: Super Contributor
timestamp: September 12, 2025, 09:54:00 pm
content: R&S visa can do the job tooRhode Schwartz ...

author: joeqsmith
author_rank: Super Contributor
timestamp: September 13, 2025, 06:00:27 am
content: Interesting as that PC would have some version of NIVISA on it. I'll check the documentation and see what they call out for a specific version.

author: tautech
author_rank: Super Contributor
timestamp: September 13, 2025, 06:52:44 am
content: Quote from: joeqsmith on September 13, 2025, 06:00:27 amLet me know what you find.If the scope was PC connected via USB before installing VISA Windoze will assign its own USB driver which won't talk with any Easy**** SW but with a simple driver reassignment this can be corrected for it to use the correct driver from the NIVISA install.Helped a few sort this in early days from W7 and on with a small doc pointing out how to correct it, as attached.

author: joeqsmith
author_rank: Super Contributor
timestamp: September 22, 2025, 04:48:31 pm
content: Just an FYI. Installing the latest NIVISA solved it. If my memory serves me, it seems I had installed an older copy on that particular PC. It seems there was a problem with some of the NI hardware that required an older version of VISA that would still work with Windows 11. On Windows 10, I have a different version of NIVISA that supported that same hardware. That combination was not a problem with your software.We had since bought new hardware that NI currently supports, and so this shouldn't be a problem.
The Fluke 28 II battery door slightly bulging - Page 1
Forum section: electronics / testgear

author: tyreman1
author_rank: Newbie
timestamp: September 21, 2025, 01:54:24 pm
content: Not to beat an old issue or topic ...I have seen some of the posts from years ago on this .Does it matter if the Fluke 28II battery door bulges a bit?

author: rvalente
author_rank: Frequent Contributor
timestamp: September 21, 2025, 02:11:36 pm
content: You may loose the IP rating, specially for liquids.
Alientek LT1 LCR Tweezers (ATK-PTLT1) with 5V voltage meter and signal generator - Page 1
Forum section: electronics / testgear

author: bffargo
author_rank: Regular Contributor
timestamp: September 21, 2025, 08:05:56 pm
content: This was a new item that popped up last month on Ali. It seems to be very similar to the even newer ZOYI MD-2 as far as features; but not identical.Mine came with HW Ver: 1.1 and SW Ver: 1.5. There is a new v1.6 available on their web site dated 2-SEPT-2025.https://en.alientek.com/download.html● Support 0.1V/0.3V/0.6V/1.0Vrms test voltage● Support 100Hz/120Hz/1KHz/10kHz test frequency.● Resistance, capacitance, inductance measurement function● Voltage, diode, and on/off measurement functions● Sweep measurement function● Intelligent device type recognition● Support series and parallel equivalent modeling● 1.14-inch IPS LCD, fine and rich display.I picked one up a month ago on the Early Bird special for ~$30 USD after discounts and coupons. It jumped back up to ~$45USD for a month, but dropped again today to ~$27 USD and additional $2 to $4 in coupons you can stack.

author: bffargo
author_rank: Regular Contributor
timestamp: September 21, 2025, 08:52:49 pm
content: I merged the marketing images from both listings and tried to highlight (in green squares) which of the units had better specs / features making it easier to compare. Overall, it looks like the new ZOYI is the better unit; unless you need the 1V max test level instead of .6V.Zoyi MD2 over Alientek LT1+ 100KHz measuring+ Lower percentage and count variance across all 3 measurement types+ Supports P parameter+ -30V to +30V (instead of +/- 5V) voltage measurements+ 3 additional signal types can be generated+ Comparison function+ 3 columns of parameters on sweep mode and last column can be switched to specific measurement desired+ 4 key control vs. 3 key? Possibly "Duty" control on non-square wave signals?Where Alientek is better (again, per their paper specs):+ Supports 10miliohm to 1 ohm measurements+ Supports 1 volt test level+ Both ESR and EPR+ Supports Vmin to Vmax for sig gen not just 0V-3V forced Vpp but limited to 0.5V to 3.0VNote: I am just a hobbyist, I may have misidentified something reading through all of the specs. LMK if anything needs correcting.

author: ptluis
author_rank: Frequent Contributor
timestamp: September 21, 2025, 10:43:14 pm
content: I compare the measurements of LT1 with DM40C and they are surprisingly similar, really good precision in fact. LT1 is fast taking measurements, feel good in hand, nice grip. The only think it can't do is identify a diode in auto mode, something they could fix in a new firmware update. I bought mine for 21€
Anritsu MD8470A Software - Page 1
Forum section: electronics / testgear

author: TylerPeppy
author_rank: Newbie
timestamp: September 21, 2025, 12:36:46 pm
content: Hi everyone,Was looking at an Anritsu MD8470 on Ebay that's selling for $200 CAD and I would really like to futz around with learning more about W-CDMA and mobile networks. Problem is, it doesn't have any software on it... I figure you can just install Windows XP on it, and then load the software seperately. Anritsu has a download page for the software, but my account keeps giving problems for logging in; does anyone have backups or some of the software they could potentially share?Thanks,Tyler
Tektronix FG-501A adjustments/calibration - Page 1
Forum section: electronics / testgear

author: Zephyr
author_rank: Newbie
timestamp: September 15, 2025, 08:09:20 pm
content: Has anyone worked on one of these and gone through the adjustments procedure? I have one here that is in very good shape, I recently replaced all the electrolytic caps in it (but not the tantalums), and while all the voltages are correct, there is an offset issue with the triangle and sine waves. The square wave output seems fine. The triangle wave seems to be filtered to produce the sine wave, since the adjustments for those interact (i.e., adjusting the triangle wave pots will change the sinewave too). There seems to be a bit of an offset that keeps everything a bit too positive. I can improve things with the adjustments, but never get it "dead on" (withing 10-20mV or so), and it changes a LOT across the output voltage range. If I set it up nice at the fully CCW position on the output level control, it will be off by about 0.5-0.75V at the fullly CW position of the output control. If I set it up to be right at the fully CW position (which is really touchy, and the procedure says to set the offset at the fully CCW position), then it will be off around 0.3-0.5V or so at the fully CCW position.Is it really just this bad in terms of "zero flatness" across the range, or I am maybe missing something? The adjustments procedure doesn't really talk about checking things across the output range, it's an very abbreviated procedure. Has anyone else seen anything like this or have any ideas? I'm thinking I'll replace the 5 or so tantalums in there too, but I'm not so sure that is the problem since everything else seems to work pretty much fine and within spec.Bill

author: Zephyr
author_rank: Newbie
timestamp: September 19, 2025, 11:43:07 am
content: Anyone have any ideas?Bill
What modern Spectrum Analyzer can do than the year 2000 HP gear? - Page 1
Forum section: electronics / testgear

author: Wilson__
author_rank: Frequent Contributor
timestamp: September 19, 2025, 05:38:54 am
content: For Rigol or similar Digital oscilloscope at 900 to 1000 USD, 4 channels , new one has tons of extra function that the old one do not have. especially mixed signal and complex digital condition to trigger and store long waveform, then, to dig out information laterI have not use NEW AGE Rigol or similarspectrum analyzer. Are they still doing very similar job as the year 2000 HP gear. Basically a well calibrated radio receiver with auto sweep tuning.Many thanks

author: fourfathom
author_rank: Super Contributor
timestamp: September 19, 2025, 06:41:19 am
content: The newer SAs can give you modulation analysis, occupied bandwidth measurement, automated harmonics analysis, markers and marker math, and plenty more. Many of these features will be an extra-cost upgrade, and different SAs will have different options and features. It's worthwhile to review the specs -- you might find a feature that's useful to you.

author: Wilson__
author_rank: Frequent Contributor
timestamp: September 19, 2025, 01:26:28 pm
content: What are the Pro and Con for buying a 20 years old traditional HP spectrum analyzer vs. a new one, if so, which brand? Is Rigol or similar good and cost effective. Just the entry level model.For development use. Not for daily routine for doing repetitive tests as in FCC/IEC/EN compliance approval test lab where 'auto calculation' is very useful.No really high frequency work. Need to cover 2.4GHz Bluetooth and WiFi. No coverage for 5/6 GHz WiFi.Many thanks

author: Arhigos
author_rank: Regular Contributor
timestamp: September 19, 2025, 01:41:23 pm
content: Quote from: Wilson__ on September 19, 2025, 01:26:28 pmI guess some organizations may need a remote control compatibility with some old software.Also many people love the build quality and very detailed service manuals.And, people who used those instruments in the past may feel familiar with interface, etc
Discovered OWON calibration key sequence entry XDM multimeter - Page 1
Forum section: electronics / testgear

author: modz786
author_rank: Regular Contributor
timestamp: February 19, 2025, 02:08:42 pm
content: OWON XDM SERIES MULTIMETERS; my XDM1241I discovered the key sequence to get into debug mode for meter calibration so I thought to share with everyone as OWON is unhelpful in all aspects of post sales and warrantyPress following keys sequentiallyUTILITYMATHUP ARROWRANGEDOWN ARROWthen on screen select DEBUGwrite down what you see for a rainy day referenceyou can press RANGE to move the red pointer across to the Coef sectionDUAL will move along to the digit you want to change and use the ARROW keys for thisMATH is to save exit

author: Dan77
author_rank: Newbie
timestamp: May 15, 2025, 06:30:29 pm
content: I have an Owon XDM Bench variant of this multimeter 2041 but this calibration key sequence does not work.Any suggestions??

author: The Soulman
author_rank: Super Contributor
timestamp: May 15, 2025, 06:40:40 pm
content: Would like to hear about the xdm2041 as well.

author: uwe_k
author_rank: Newbie
timestamp: September 22, 2025, 07:06:36 am
content: Any news here?I also have a 2041 and want to "improve" it :-)
Who makes BC337-40 with “K in circle” marking on back? - Page 1
Forum section: electronics / testgear

author: Cardride
author_rank: Newbie
timestamp: September 17, 2025, 06:44:36 pm
content: Hi everyone,I'm trying to identify the manufacturer of a BC337-40 transistor I recently acquired.The component has the standard marking "BC337-40" on the front, but on the back (bottom), there's a small "K" inside a circle (see photo).I've checked datasheets from major manufacturers like ON Semiconductor, NXP, STMicroelectronics, and Fairchild — none use this marking.The transistor has no brand logo or name visible on the body. It’s likely a generic or rebranded part, possibly from a Chinese distributor.Could anyone recognize this marking?Is it common among certain OEMs or distributors?Here are the details:Part: BC337-40 (TO-92)Front: "BC337-40"Back: "K" inside a circle (see attached image)No logo or brand visibleFunctionally works fine (tested)Any help identifying the manufacturer or source would be greatly appreciated.Thanks in advance![Your username]📎 Photo attached

author: David Hess
author_rank: Super Contributor
timestamp: September 18, 2025, 09:53:27 pm
content: Diotec seems to put a T on theirs, and Fairchild an F.

author: oPossum
author_rank: Super Contributor
timestamp: September 18, 2025, 10:29:04 pm
content: What are the exact markings of the front?
MSO5074 - Logic Analyzer Vref defective? (ask for feedback) - Page 1
Forum section: electronics / testgear

author: gentilkiwi
author_rank: Newbie
timestamp: September 16, 2025, 08:58:13 pm
content: On the Rigol MSO5074, I had a problem with the official PLA2216 probe: unable to get values on D0 to D7 inputs but... D8 to D15 are OKSo I created my own PCB (CMOS/TTL compatible) and I now have my debug pins... surprise! It seems the problem isn't with the PLA2216 probe,but on the oscilloscope side.I made some measure on the two Vref pins:VThreshold(mV)VREFD7-D0 (mV)VREFD15-D8 (mV)37006534192500533.52981650450219.41400424189.51250409.6175.31200407173.5900374.7141.50285.4553.6100001283.31054.41000384149.8The 'correct' Vref seems to be: VREF= (VThreshold/ 10) + 50mV- it's what I have on the D15-D8 partOn the not working one, it seems to be VREF= (VThreshold/ 10) + 285mV- it's what I have on the D0-D7 partAnyone know about the correct values on their side ?Bonus question: what can be the problem on the oscilloscope side ? :')

author: thm_w
author_rank: Super Contributor
timestamp: September 17, 2025, 12:35:59 am
content: This is going to be an insulting question but, did you set them the same on the scope side? Did you do a probe cal?See page 208 of the manual.

author: gentilkiwi
author_rank: Newbie
timestamp: September 17, 2025, 05:03:55 am
content: That's not at all an insulting question!Yes, Threshold was set for each measure in this menu, even manual oneCalibration is failing with home made PCB, don't have the PLA under the hand right now... do you know how it's measured on the PLA side ?

author: gentilkiwi
author_rank: Newbie
timestamp: September 17, 2025, 09:46:56 pm
content: You were right; the two strange "offset" values are calibration-dependent.It's definitely the probe (not the scope): calibration is OK on a borrowed one (with a smaller offset measured), but fails on the original.Hopefully homemade (and limited to 3.3/5V) are not calibration/vref dependent.

author: thm_w
author_rank: Super Contributor
timestamp: September 17, 2025, 09:59:31 pm
content: From what I remember the cal is internal, you can just externally short probe detect and it should work. If there is an issue maybe the external probe is loading the signal down.If you have a fixed 3.3V trigger in hardware then Vref wouldn't matter. You can look over some of the schematics in the original threads.

author: gentilkiwi
author_rank: Newbie
timestamp: September 18, 2025, 07:52:04 pm
content: Unfortunately, shunt PADetect to GND (wire or 1K resistor) is not enough to PASS the calibrationFI, I measured what happen on Vref when doing calibration (a failed one)
Looking for info, schematics, photos of a HP 44497A HV Option for the 3457A DMM - Page 1
Forum section: electronics / testgear

author: TERRA Operative
author_rank: Super Contributor
timestamp: September 17, 2025, 12:36:59 pm
content: I occasionally need to measure up to 1000VAC RMS but as my 34461A and 3458A don't posses the ability for such a thing, I'm thinking to acquire or build the 44497A HV Attenuator card for my 3457A.Does anyone here have one they can take some good photos and measurements for me so I can replicate the board, or is there schematics etc for this card anywhere?Or maybe sell it to me?Any help would be greatly appreciated.
Owon B41T+ Hidden feature - Page 1
Forum section: electronics / testgear

author: ptluis
author_rank: Frequent Contributor
timestamp: September 17, 2025, 07:57:02 am
content: I've found a hidden feature not mentioned on the user manual of this multimeter from owon.It's "Auto Hold function", really useful to keep the measurement when both hands are occupied. To enter it press "Hold" button for more than 3 secs and the hold label starts blinking, take your measurement and wait until "hold" label stops blinking, the value will be kept until you press "hold" button again.
LCR-TC1 input expansion case (3D printing) - Page 1
Forum section: electronics / testgear

author: SBTC
author_rank: Newbie
timestamp: August 25, 2025, 04:19:10 am
content: Any interest in a custom LCR-TC1 case which adds the ability to use insulated banana probes and a foot pedal for triggering? (I just don't want to bother cleaning up the files for publishing if no one cares)

author: scopeman
author_rank: Frequent Contributor
timestamp: September 17, 2025, 01:52:26 am
content: Sure!Looks like a nice job!I could knock it out on my Bambu Lab X1C. Step files work great if you would supply them.Thanks!SamW3OHM
Review - AC/DC clamp meter Hioki CM4375-50 - Page 1
Forum section: electronics / testgear

author: Jiri Bekr
author_rank: Contributor
timestamp: March 15, 2025, 09:48:54 pm
content: Hello guys, I review and test some equipment, mainly multimeters and power tools. Since some of my content would be of use worldwide, I make some YT videos also in English language (my main channel is Czech).As I am cooperating with Teste - Czech distributor for Hioki, they sometimes lend me some made in Japan pieces for testing. So after nearly one year of field testing (I am electrician working in industrial factory low voltage distribution rooms - 3 phase stuff), I made review for this Hioki clamp guy.Thumbnail attached. It contains some usefull stuff for deciding whether you need to watch the video, or not. Video is available on Youtube and OdyseeLink on YouTubehttps://youtu.be/3pKAXVQlqdsLink on Odyseehttps://odysee.com/@jiribekr:b/Hioki-CM4375-50-EN:2

author: walter.aranda
author_rank: Contributor
timestamp: September 17, 2025, 03:29:06 am
content: Hello, thanks for the video, it’s very complete and informative. I have the same clamp model here with me, and I’ve noticed that when using the Gennect software during harmonic analysis, the clamp introduces noise in the form of pulses around 125Hz. The clamp is not connected to anything, and I’ve tested it away from power lines or fluorescent lights. I don’t know what could be causing this. I’m using Eneloop rechargeable batteries, fully charged, but the problem persists. Maybe that noise is being introduced in the same circuit for the Bluetooth transmitter. I don’t know if you have the same issue.
Ti450 IR Fusion Camera/Fixed Mount RSE600 Thermal Camera - Page 1
Forum section: electronics / testgear

author: nckadfam
author_rank: Newbie
timestamp: September 15, 2025, 03:51:21 pm
content: I am trying to sell two IR Cameras. One is a Ti450 Pro used but in excellent condition. The other is a fixed mount RSE600 Thermal Camera. I would like 7500 for both and would prefer to sell them together but would separate. 5K for the fixed mount (retails for 20k) and 2500 for the handheld (retails for 5k).

author: DaneLaw
author_rank: Frequent Contributor
timestamp: September 15, 2025, 04:08:29 pm
content: So your just dropping in from the sidecurb trying to flip 25k of retail MSRP gear, and wont even take a minute to examine the forum, and where and what guidelines you need to follow or what subsection that is relevant for "selling"..Keep going, you're on a roll..https://www.eevblog.com/forum/buysellwanted/
Does anyone recognize this encoder from a Tek DPO4054? - Page 1
Forum section: electronics / testgear

author: ArcticGeek
author_rank: Regular Contributor
timestamp: September 15, 2025, 01:35:15 pm
content: Hello all,I have a rotary encoder that comes from a Tek DPO4054 that has a broken shaft and I'm trying to find a replacement. I've checked the Bourns and Alps websites, as well as Digikey and Mouser and haven't seen anything that really comes close to this. There's no markings on it other than those pictured on that back which aren't real helpful. It's possible that Tek used a custom part for this, but I thought maybe someone out there has seen some like this.I'm attaching a few pics to help identify what type this is.Thanks in advance.

author: squadchannel
author_rank: Frequent Contributor
timestamp: September 15, 2025, 01:40:18 pm
content: https://www.eevblog.com/forum/repair/mso4014-rotary-encoder-switch/msg5546025/#msg5546025I looked into it in the past. Noble SDB161

author: ArcticGeek
author_rank: Regular Contributor
timestamp: September 15, 2025, 02:15:16 pm
content: @squadchannel Many thanks!Yes that does indeed look very close to the original. It looks like the original might have 24 ticks and all the ones I'm finding are 36 ticks, but that just might be good enough.I actually did a search here on eevblog but never ran into the post you mentioned...I supposed its because I searched for MSO4054 and MSO4104.....not MSO4014Thanks again for the tip.
Search calibration software for Tonghui TH1942 benchtop (or BK Precision 5491B) - Page 1
Forum section: electronics / testgear

author: old-papa
author_rank: Newbie
timestamp: September 14, 2025, 03:58:50 pm
content: Hello,I'm looking for the "TH12024" calibration software for a "Tonghui TH1942" benchtop multimeter. (or BK Precision 5491B)I got the device from an estate sale, unfortunately without anything included. It displays about 1-2% too high in the DCV range. Calibration is done via USB using software.Old-Papa
New handheld DSO+DMM, BTMETER BT-50M, 2ch, 50MHz/200MSPS (september 2025) - Page 1
Forum section: electronics / testgear

author: tunk
author_rank: Super Contributor
timestamp: September 13, 2025, 04:27:13 pm
content: Yawn, do we need yet another:- 2ch, 50MHz, 200/280MSPS- record length 128kB- 20mV - 10V/div- DMM 6000 count- signal generator- size 183×100×44 mm- price on aliexpress around US$120 (too much given that comparable models from Zoyi etc. costs around $70-80):https://www.aliexpress.com/item/1005009233270386.html
Lecroy DDA scope problems - Page 1
Forum section: electronics / testgear

author: 174929851
author_rank: Newbie
timestamp: September 13, 2025, 04:15:32 pm
content: Dear allI bought a Lecroy DDA5005A scope two years ago,during two years of my use,it function good.But last week,It was fault without any sign.When the Xstream software boot,my scope will be identified as DDA3000 incorrectly,and there is no waveform in scope.What should I do to solve it?Thanks for your comment

author: DaJMasta
author_rank: Super Contributor
timestamp: September 14, 2025, 06:30:59 am
content: There are probably more error messages/behaviors than that, and they will tell you better what to look at. The architecture of the DDA5005 is nearly identical to the WavePro 7000 series scopes, and there are a few big threads on troubleshooting and working in them on here - maybe that's a good place to start.

author: 174929851
author_rank: Newbie
timestamp: September 14, 2025, 07:01:34 am
content: Thanks you advice.I suspect the DS2433 ROM chip on PCI card first,because I replace the card from another scope(WP7100),the model changed.Is there any way to recovery DDA5005 model,Does anyone have DDA5005 eeprom dump?
IDS6072A-U Firmware - Page 1
Forum section: electronics / testgear

author: Mr Lurpak
author_rank: Contributor
timestamp: September 09, 2025, 07:43:51 am
content: Hi all,I have recently repaired an IDS6072A-U Firmware (RSPRO rebranded ISOTECH) ISOTECH IDS6072A-U and is looking for Firmware updates and manuals for it. Does anyone have the newest firmware? or can direct me to where ISOTECH informations/updates can be found?I don't seem to be able to find official ISOTECH support site (unlike Siglent which has great support) and of course I did reach out to RSPRO for help but their answer is just it is discontinued so NO info.Cheers.

author: Tjuurko
author_rank: Regular Contributor
timestamp: September 09, 2025, 10:37:19 am
content: Very similar to:https://www.gwinstek.com/en-global/products/detail/GDS-1000-U

author: Mr Lurpak
author_rank: Contributor
timestamp: September 14, 2025, 01:51:27 pm
content: Got the right FW and up and running again.
New handheld DSO+DMM, RC7105, 2ch, 50MHz/200MSPS (september 2025)  - Page 1
Forum section: electronics / testgear

author: tunk
author_rank: Super Contributor
timestamp: September 13, 2025, 04:14:04 pm
content: Yet another:- 50MHz/200MSPS, 2ch- 20mV - 10V/div- 10ns - 20s/div- storage depth up to 128kB- signal generator- DMM 6000 count- screen 3.5"- size 180x86x33mm- price from around US$90 on aliexpress:https://www.aliexpress.com/item/1005009722822572.html- looks like there's also a 20MHz single channel model, RC7102
New: Rigol RSA6000 Series Real Time Spectrum Analysers up to 26GHz - Page 1
Forum section: electronics / testgear

author: enjoi4283
author_rank: Newbie
timestamp: September 12, 2025, 12:31:12 pm
content: RIGOL has just launched the RSA6000 series, a new generation of real-time spectrum analysers aimed at RF engineers working in communications, radar, EMI/EMC pre-compliance, and general spectrum monitoring. The RSA6000 covers models up to26.5 GHzwith real-time bandwidth options up to200 MHz.Key Performance SpecsFrequency coverage: 5 kHz – 8.5 GHz / 14 GHz / 26.5 GHz depending on model.Real-time analysis bandwidth: up to 200 MHz, with 100% probability of intercept (POI) as low as 3.83 µs.Scan rate: up to4 THz/sin RTSA mode for rapid spectral monitoring.Dynamic range:DANL down to –163 dBm/Hz(typ.), phase noise of –108 dBc/Hz @ 1 GHz, 10 kHz offset.Sampling & demodulation: up to 200 MHz VSA demodulation bandwidth for modern modulated signals.Analysis Modes (Five Instruments in One)GPSA – Traditional swept spectrum analyserRTSA – Real-time spectrum analysis with trigger and mask functionsVSA – Vector signal analysis (200 MHz BW)ADM – Analogue demodulation (AM/FM/PM)EMI – Pre-compliance with CISPR filters and limit linesUsability & ConnectivityTouch-optimised UI (large display with multitouch operation)Remote access via web control and FTP server (no client software required)Automation through SCPI, LAN, USB for integration into test systemsModel LineupRSA6085: 9 kHz – 8.5 GHzRSA6140: 9 kHz – 14 GHzRSA6265: 9 kHz – 26.5 GHzOptions include preamplifiers, tracking generators, EMI application software, advanced measurement kits, and bandwidth upgrades.AnthonyLambda Photometricshttps://www.lambdaphoto.co.uk/https://www.lambdaphoto.co.uk/test-instrumentation/test-measurement.html
Rigol RSA3030n vs SVA1032X - Page 1
Forum section: electronics / testgear

author: trevwhite
author_rank: Frequent Contributor
timestamp: September 08, 2025, 05:27:47 pm
content: Hi, doesn't seem to be much conversation about the RSA3000 SA with VNA. I see they can be upgraded and so can the SSA3000x plus so I am wondering if anyone has comments about the RSA3030N or the SVA1032X which seem to be comparable models at present.Thanks

author: Sorama
author_rank: Frequent Contributor
timestamp: September 08, 2025, 06:24:38 pm
content: Scopes??These are SA or VNA.

author: trevwhite
author_rank: Frequent Contributor
timestamp: September 08, 2025, 06:30:09 pm
content: Apologies, and corrected. Thank you.

author: enjoi4283
author_rank: Newbie
timestamp: September 12, 2025, 11:50:14 am
content: UK Rigol distributor here (https://www.lambdaphoto.co.uk/)We're currently looking for people to review the RSA3000. Would you be open to writing a review if we sent you our demonstration unit?AnthonyLambda Photometrics
PFL780 from Polar Instruments - Missing Software! - Page 1
Forum section: electronics / testgear

author: BinaryDust
author_rank: Newbie
timestamp: September 11, 2025, 07:58:17 pm
content: Hi everyone!I was cleaning my lab recently, trying to get rid of this pile of "I'll restore it later" kind of instruments, aka. the pile a shame.Anyway, I found a PFL780 into it and I thought it would make a nice addition to my current setup.After a quick dusting, it seems to power-up nicely, but I'm stuck there since I can't get my hands on the software needed to use this instrument.I went to polar's website, but I can't find any download links, and it even seems like a license is requiredSo I searched on all my shelves and in any drawers for a CD or floppy disk containing the software and an activation key, but found nothing, except a VHS of the training program for the PFL in question. It could be useful for later, I guess!I just contacted Polar Instruments by e-mail, I'm waiting for them to reply, but I've really low hopes since I obviously don't have any active Polarcare agreement (program to have support and maintenance).I wanted to share this story to you all, since some of you may be able to help me!I thought it would be very sad to let this wonderful instrument die just because of missing software, so I made this post as a last resort!If you have any ideas of how/where to get this software, to make this PFL usable again, please share your knowledge to us all!Thank you for taking the time to read this little storyAlso, I'm a newbie there, please tell me if my post is missing something!
Hameg Analogue oscilloscopes - Page 1
Forum section: electronics / testgear

author: Doggone
author_rank: Contributor
timestamp: September 12, 2025, 02:44:28 pm
content: Greetings to all existing members - just joined the forum today so starting first post with a question re Hameg dual trace scopes - I have just finished repairing/refurbishing a single channel Scopex 1979 vintage oscilloscope - (Photo attached) a fairly easy job but now considering purchasing a dual channel scope and can see there are quite a few Hameg analogue scopes available at low prices - all listed as 'spares or repairs' granted given the age of these scopes they are all going to need some repair. I did download the service manuals for some of these models and note that they use a number of I.C's unlike My early Scopex which only used transistors.My question is - can replacement I.C's be obtained should any prove to be duff? I understand that a lot of manufacturers then, and especially now, use I.C's specially made for the manufacturer and usually carry no markings or identification - making replacement very difficult.Nick

author: MadTux
author_rank: Frequent Contributor
timestamp: September 12, 2025, 02:52:35 pm
content: Old analog Hameg should be free of custom parts from what I know.Digitizing Hamegs like 1507 use smallish FPGAs for digital stuff, not sure if they have external config, i.e you can replace them without losing the config.HMO Hameg have custom parts, from what I know.

author: Aldo22
author_rank: Super Contributor
timestamp: September 12, 2025, 05:24:34 pm
content: Quote from: Doggone on September 12, 2025, 02:44:28 pmA few months ago, I bought a 40-year-old Hameg and just cleaned it up a bit.I haven't had to repair anything yet. I could maybe replace the electrolytic capacitors, but “If it ain't broke...”I would look for one that works, they don't cost much anymore.https://www.eevblog.com/forum/testgear/my-brand-new-old-hm203-4/msg5872100/#msg5872100
High-Resistance/Conductivity measurement with the Brymen 789 - Page 1
Forum section: electronics / testgear

author: hp3310a
author_rank: Regular Contributor
timestamp: September 10, 2025, 07:48:22 am
content: The Brymen 789's specs resistance measurement up to 60MΩ. However, you also have conductivity measurement (S = 1/R) with a resolution of 0.01nS (=100GΩ).I measured the resistance of my ESD-mat and the reading stabilized at about 4nS (=250MΩ) within 1 minute (dropping down from initial 10nS) which is already far outside the normal resistance range.From a brief encounter with an Advantest hi-resistance meter I know: These things are non-trivial to do. So how reliable is the conductivity that the 789 measures?
Siglent SDM3055 Incorrectly powered with 230V instead of 110V - Page 1
Forum section: electronics / testgear

author: dexar
author_rank: Contributor
timestamp: September 10, 2025, 07:43:41 pm
content: I have just bought a Siglent SDM3055. When I first powered it up the input fuse blew. Since I bought it from another person in my country I never thought of looking at what voltage the AC input was set to. When checking the fuse I saw to my great surprise that the input was set to 110V and not 230V. I opened it up and nothing seemed burnt, the caps looked ok so I replaced the fuse and set it to 230V and powered up it again. It now turned on correctly and it seems to work ok.It looks like a tradional linear design with a big transformer and a couple of taps to the two different PCBs and what look like a linear regulator. I am a bit worried that something took a hit. Does anybody know if it has some kind of crowbar overvoltage protection that caused the input fuse to break?

author: tautech
author_rank: Super Contributor
timestamp: September 10, 2025, 08:30:10 pm
content: Do some test measurements from trusted voltages, resistances etc as a check its working correctly.Then check the FW installed and update as/if required.The last 2 updates must be done from a specific version so check the version installed and be sure to read the version notes in the downloads.https://int.siglent.com/download/firmwares/?ProId=26
Scientific SMO502 (rebranded Siglent SDS1052DL/DL+) stuck in boot - Page 1
Forum section: electronics / testgear

author: abhijithekv
author_rank: Newbie
timestamp: September 08, 2025, 09:12:58 pm
content: Hi,I have a Indian rebranded version of the Siglent SDS1052DL/DL+ (50MHz, 500MSa/s) called the Scientific SMO502 that is stuck in a bootloop. This DSO was not powered for quite a while. Now when the power button is clicked, I can see the boot logo (of Scientific) and the relays click but doesn't successfully boot. I am also unsure if it is "DL" or "DL+"I have tried the pressing Math button rapidly during the start and haven't had any success.Power Board PCB inside has the following marking:SDY8.007.314ACMLP_210500Main Board PCB has the following marking:SDY8.007.107GCML_190300I have attached pictures as well.The DSO is out of warranty. Please suggest any possible steps to get this working again.Many thanks,Abhijith

author: abhijithekv
author_rank: Newbie
timestamp: September 08, 2025, 09:18:27 pm
content: Adding pictures of Main Board and Power Board.

author: tautech
author_rank: Super Contributor
timestamp: September 08, 2025, 09:23:06 pm
content: Siglent HQ can provide a USB recovery package.Close the unit as there is no need to access the PCB's for this procedure.support@siglent.com

author: abhijithekv
author_rank: Newbie
timestamp: September 08, 2025, 09:30:32 pm
content: Hello @tautech,Thanks for your response. Can you please help me identify the model so that I can email Siglent and ask for the right recovery package?Regards,Abhijith

author: tautech
author_rank: Super Contributor
timestamp: September 08, 2025, 09:34:26 pm
content: Quote from: abhijithekv on September 08, 2025, 09:30:32 pmFrom the mainboard image it looks like a CML+ however the SN# will tell the full story.Just tell HQ the real rebranded model # and SN# and that will be enough.

author: abhijithekv
author_rank: Newbie
timestamp: September 10, 2025, 01:48:59 pm
content: Hello @tautech,Any other email ID? I haven't heard back from them yet. No support ticket created too.Edit: They got back and provided a recovery package with "500MSa" in the filename. All I had to do was to put the files in the root of a 4GB pendrive formatted to FAT32. Plugged it in and powered the scope. After a while it booted successfully.PS: Leave the scope on for ~15mins and then run the self cal before using. I have the files saved. If someone needs it, just send a PM.Best,Abhijith
Agilent DSO/MSO 8000 series scopes AutoProbe Assembly removal - Page 1
Forum section: electronics / testgear

author: F1GWR
author_rank: Regular Contributor
timestamp: September 06, 2025, 08:04:20 am
content: Hi,I need to remove the front plate of my MSO 8104A. Therefore downloaded the Service Man at:https://www.keysight.com/us/en/assets/9018-18234/service-manuals/9018-18234.pdfHowever, beforehand I must remove the AutoProbe Assembly (page 104 steps b and c). Next page Fig. 6-9 is unclear. In real there are *two* small rectangular openings at the said location. The lower one allows to slightly pry forward the AutoProbe face plate when I insert a blade screwdriver. And the upper one next to the third attenuator assembly does nothing.To avoid damaging anything I didn't dare pushing too hard on the screwdriver.Does anyone have the experience on how to properly remove that AutoProbe assembly?

author: F1GWR
author_rank: Regular Contributor
timestamp: September 09, 2025, 09:28:56 pm
content: As supposed initially, the service manual is wrong!In real there are 2x2 "claws" located below the first and third attenuators. To loosen the Autoprobe Assembly simply pry each upper and lower claw alternatively with a screwdriver for each set and the assembly finally gets free. Beside that some flat cables as well as the calibration cable SMB connector need to be unplugged and logic connector cable retaining clamp removed. The four BNC's loosening require a non-standard 16 mm pipe wrench. The dust surrounding the optical encoders need to be cleaned as well as the LCD display.

author: LazyDebug
author_rank: Newbie
timestamp: September 10, 2025, 01:29:20 am
content: The service manual's instructions (Fig. 6-9) were incorrect or unclear for your specific model. Instead of the single opening shown, there are actually two sets of retention clips ("claws") located beneath the first and third attenuators.The proper removal method is to gently and alternately pry each upper and lower clip with a flat-blade screwdriver. Applying pressure gradually and alternating between the clips allows the AutoProbe assembly to release evenly without damage.Your additional notes about disconnecting the flat cables, the SMB calibration cable, and the logic connector retaining clamp are crucial for a complete and safe removal. The need for a 16mm pipe wrench for the BNC nuts is also a valuable tip for anyone else attempting this procedure.Thank you for posting your solution. This kind of practical, hands-on information is incredibly helpful to other technicians and engineers who might run into the same problem. You've not only solved your own issue but also created a helpful resource for the community.
MSO5000 AWG Gen1 broken? - Page 1
Forum section: electronics / testgear

author: AngusBeef
author_rank: Regular Contributor
timestamp: September 08, 2025, 05:03:47 pm
content: Probably I've done something dumb that I don't recall, or possibly it just failed randomly, but here's the TLDRMSO5000 has two AWG's, and for me, Gen 1 works at 1.59v amplitude (0v offset). If i increase it to 1.60v or more there is a "click" as it changes (i assume) to some circuit able to generate its higher amplitudes, but this results in the waveform just flatlining.Gen 2 works as expected, and works at 1.59v amplitude and below, as well as working properly in the higher region after it clicks.Gen 1 seems like it's the hardcoded default for Bode Plot analysis, and I couldn't figure out how to change it to use Gen 2, so this is a potential issue with having one bad generator :\I'm assuming I've either burned something up or a component has failed. Has anyone opened up the scope for repairing this before? I assume there may be some kind of fuse or I'll need to swap out a dead component but I'd like to avoid going in blind.

author: thm_w
author_rank: Super Contributor
timestamp: September 08, 2025, 08:47:40 pm
content: Its not too hard to open, just takes some time to remove the metal cover part. Then the generator components are easily accessible.Do you have an external function generator?

author: AngusBeef
author_rank: Regular Contributor
timestamp: September 09, 2025, 09:38:10 am
content: I don't have an external function generator - I have usually just used an Arduino. Definitely would be a decent investment.I was looking athttps://gitlab.com/thmjpr/fg_boost/down the road as well to get +/-5v from the AWG here at some point, but I have too many other projects at the moment.Thanks for the video - that does look straightforwards. I'll report back once I've taken it down and gotten a look.
Info: RCA WV-511A Picoampmeter? - Page 1
Forum section: electronics / testgear

author: Stray Electron
author_rank: Super Contributor
timestamp: September 07, 2025, 08:59:53 pm
content: Does anyone know anything about these? I can't find a manual or even an ad for one. I picked up one in very nice condition a few days ago. It was buried in the back of one of my buddies ham shack and he doesn't even remember having it. It has one row of push buttons for + - Zero Ma ua na and a second row of buttons labeled 30 10 3 1 .3 and .1 and a nice sized mirrored scale analog meter. The power on lamp is a neon bulb so that will give you some idea of the age. And it has a 1998 Cal sticker on it so it must have been a rather accurate device. There are three banana jack terminals on it; a black for for ground and a red and whites ones marked "input".It is not a WV-510A meter! But Google insist that it is, no matter how many quotes I put around the model number!

author: Vgkid
author_rank: Super Contributor
timestamp: September 07, 2025, 10:44:37 pm
content: Give it a teardown , and take a bunch of pictures. Try not to touch anything. You might be able to get a rough idea from the chips/parts used.

author: Tjuurko
author_rank: Regular Contributor
timestamp: September 08, 2025, 12:32:15 pm
content: The advertisement was in magazine "Electronic Design 20, September 28, 1972".

author: Stray Electron
author_rank: Super Contributor
timestamp: September 08, 2025, 01:42:30 pm
content: Quote from: Tjuurko on September 08, 2025, 12:32:15 pmInteresting, they claim that it can also be used as an amplifier or a a voltmeter. It has a two pin connector on the rear for what looks like an output recorder. Next to it are two push buttons; one marked 1 V and the other 1 Ma. so I'm guessing that you can get 1 volts or 1 Ma when it's reading full scale on each meter scale. Therefore I suppose that you could consider it an amplifier. But without knowing what the input resistance is then there's no way to use it as a voltmeter. it's amazing how much easier to use electronics TE has become in 50 years!I guess that I'm going to have to break the seals and open it up and see if it does have batteries in it anyway so I will try to get some photos and post them. But it won't be right away. This week's project (hopefully it will get done this week!) is to put a new roof on the house.A side note: I talked to a buddy this AM and the local .GOV finally came out and inspected his large personal solar project and gave their approval so I hope to visit him soon and get some pictures.
AstroAI AM33d Review and Teardown - Page 1
Forum section: electronics / testgear

author: electronupdate
author_rank: Regular Contributor
timestamp: September 07, 2025, 02:32:13 am
content: A look at what is one of the best selling budget meters on the Amazon website.https://www.youtube.com/FuCQetNcprQ

author: herr_shaibel
author_rank: Newbie
timestamp: September 07, 2025, 05:43:10 am
content: Correct link:
New handheld DSO, Tooltop ET852C, 2ch, 50MHz/200MSPS (August 2025) - Page 1
Forum section: electronics / testgear

author: tunk
author_rank: Super Contributor
timestamp: August 06, 2025, 01:50:59 pm
content: - 50Mhz bandwidth- 200MSPS sampling rate- dual channel- storage depth up to 128K- time range 10ns/div - 20s/div- vertical range 20mV/div - 10V/div- signal generator, sine 5MHz, others 2MHz- 25000 counts true RMS multimeter- 3.2" screen, 320*240- 2200mAh li-ion battery- size 181*89*40mm- prices on Aliexpress from around US $80Photo from:https://www.olx.ua/d/uk/obyavlenie/ostsillograf-tooltop-et852c-3v1-multimetr-3v1-ostsillograf-multime-IDYroWW.html

author: rvalente
author_rank: Frequent Contributor
timestamp: August 06, 2025, 02:37:57 pm
content: Pretty much like all the others, where is the encoder for vertical and horizontal? They all get this wrong!

author: tunk
author_rank: Super Contributor
timestamp: September 07, 2025, 12:02:07 am
content: Also sold as the Victor 152S for about the same price as the Tooltop.
ESG-1000A Unlock Synthesizer - Page 1
Forum section: electronics / testgear

author: ua4yhz
author_rank: Regular Contributor
timestamp: September 07, 2025, 07:28:10 pm
content: Hi AllI'm trying to unlock the upper frequency of the ESG-1000A generator. The model name and the upper frequency on the device screen change, but the synthesizer still works up to 1 GHz. Tell me, who knows where and with what command to unlock the upper frequency of the generator?I am also writing a useful program for myself for adjusting and calibrating generators of the ESG series.Best regards, Aleksandr ua4yhz.
Firmware v2.90 for R&S SFU - Page 1
Forum section: electronics / testgear

author: gamalot
author_rank: Super Contributor
timestamp: September 05, 2025, 11:45:42 am
content: It looks like R&S has closed the download, and someone is looking for it. This maybe not the latest version, but it's better than nothing.https://mega.nz/file/bJk3EKbR#mM5a0ifwaE2ml34y60JndUOo79JTmcRv99OPh0oRM2U
CURVA S MEGURO MSC983C - Page 1
Forum section: electronics / testgear

author: rigonlee
author_rank: Newbie
timestamp: September 04, 2025, 09:11:32 pm
content: Hello, I have this equipment and I would like to see the s curve, for f.i adjustments of fm, but after the purchase I don't know if I need an equipment called a sweep generator to generate 10.7mhz and inject in the 1st f.i of fm to then see the s curve, maybe I don't know how to connect the cables, I would like colleagues to help me, thank you 73 pu5rsl. VC 3165 0.01HZ-2.4GHZ FREQUENCY METER RF GENERATOR AM/FM - 120 MHZ SWEEP/FUNCTION GENERATION MINIPA MFG-4201A - 2 MHZ GW GOS-623 20 MHZ OSCILLOSCOPE SWEEP OSCILLOSCOPE MEGURO MSC983C
DMM Input / Banana Socket Protection Plugs - Page 1
Forum section: electronics / testgear

author: geralds
author_rank: Contributor
timestamp: September 02, 2025, 01:20:08 pm
content: Can someone tell me where I can get banana socket protection plugs (and correct me if terminology for these is incorrect)? I can't find such plugs on Mouser etc., nor on Aliexpress...Example of what I mean is attached (this is a screenshot from Joe's latest review of the Hioki DT4282).Many thanks

author: Aldo22
author_rank: Super Contributor
timestamp: September 02, 2025, 02:27:48 pm
content: https://www.aliexpress.com/item/1005006123073957.html

author: BILLPOD
author_rank: Frequent Contributor
timestamp: September 02, 2025, 07:58:26 pm
content: Good Morning Geralds, I use the plugs that come on a new set of test leads. They don't fit tight, but they work great on bench meters.

author: geralds
author_rank: Contributor
timestamp: September 02, 2025, 10:33:31 pm
content: Thank you both, Aldo and Billpod. The "plugs" on a new set of test leads are "blind" sockets (they cover the banana plugs of the test leads - at least for the test leads that I connect directly to the DMM inputs. Thus they would not fit. I will try to order the ones linked by Aldo, when I am back in Switzerland (seller does not seem to deliver to Germany...).I find it a bit odd that I cannot find these plugs at any of the usual electronics distributors (except for some Stäubli caps for safety sockets that you find on bench meters / PSUs etc. I am not familiar with 3D printers, so printing these myself is unfortunately not an option for me.If anyone has a link for these plugs at a European store I would be grateful if you can post it here.

author: KungFuJosh
author_rank: Super Contributor
timestamp: September 02, 2025, 11:20:59 pm
content: https://www.myflukestore.com/product/fluke-input-cap-amp-jack-plug-for-digital-multimeter-pack-of-10

author: Aldo22
author_rank: Super Contributor
timestamp: September 04, 2025, 04:50:55 pm
content: I just tried something out.You can make something like this yourself.Take a piece of tubing and one of those extremely useless test lead protective caps. A pair of scissors and voilà!Holds tight and looks decent.