hybridfree/eevblog-posts huggingface dataset:
Owon B41T+ & Zigbee CC2540 CC-Debugger (connect B41T+ to computer through BLE) - Page 1
Forum section: electronics / testgear

author: u666sa
author_rank: Frequent Contributor
timestamp: October 24, 2024, 09:36:33 am
content: What's going on boys and girls.Owon B41T+ is a nice multimeter and when you buy it, you better buy it with bluetooth dongle included, otherwise, you might have a problem purchasing a bluetooth dongle. If you are like me self, living in Russian Federation, that thing is not sold on aliexpress. It is sold in some specialized shops, and when it is available, it cost half a kidney. Then, if you are in the U.S., Europe, or Australia you can purchase it but you will find out that it cost about $20. In this small article, I will give you a better option for:A) half the priceB) you will have a nice sniffer and debugger thingy for that money in addition to connecting your DMM to computerBasically, you have to purchase from aliexpress CC2540 kit (not 2531 be careful)https://aliexpress.ru/item/1005001973376896.htmlKit comes with CC-Debugger and 2540 bluetooth dongle. Bluetooth dongle is programmed with sniffer firmware. All you have to do is program it with bluetooth firmware, file name is CC2540_USBdongle_HostTestRelease_All.hex and it is located in C:\Texas Instruments\BLE-CC254x-1.5.0.16\Accessories\HexFilesTo get the above firmware you download this file from OWON websitehttps://www.owon.com.hk/load.asp?soft_id=211&url=https://files.owon.com.cn/software/pc/owon_multimeter_pc_software_en.zipit contains both multimeter software and BLE StackAlso downloadhttps://www.owon.com.hk/load.asp?soft_id=254&url=https://files.owon.com.cn/software/PC/PC_software_for_OWON_Blue_meter(win10%20win11%2064bits%20system).zipwhich is different multimeter software.Then you have to get SmartRF Studio 7... Which could be a pain. From official TI website it is a pain. But you can google search and get it. Link is not provided here. But basically, you connect your dongle and cc-debugger, fire up SmartRF Studio 7 then launch Flash programmer from upper right corner and flash your dongle with proper firmware. Then you remove cc-debugger and insert dongle and it will work!!!!!!!!!!!Congrads, you just spend about half less money and you get useful packet sniffer and debugger and you can connect your BT41T+ to PC and record a nice youtube video! Spending money on CC-debugger is justifiable, spending money on usb dongle just to connect DMM to PC is not justifiable!

author: Almo
author_rank: Newbie
timestamp: April 25, 2025, 11:52:41 pm
content: Wow! I can see that you made research and can imagine your feeling when it worked.I was going to give up till I red your post, and this encouraged me to give it a try following your instructions.I will make an order from Aliexpress following your link and try it.You were true regarding downloading from Ti, I had to make and account in order to download it.Thank you for sharing your experience
Calibration of Uni-T UTG900 series - Page 1
Forum section: electronics / testgear

author: ptluis
author_rank: Frequent Contributor
timestamp: April 25, 2025, 04:27:29 pm
content: Anybody knows how to calibrate this generator from Uni-t model UTG932/962 ?The issue is voltage difference between Ch1 and Ch2 where Ch2 is 0.4V off, meaning setting sinewave on both channels to 2.5Vpp outputs are:Ch1=2.5VppCh2=2.9Vpp
UTR2830 Series UNI-T - Page 1
Forum section: electronics / testgear

author: ovidiu_vr
author_rank: Newbie
timestamp: April 29, 2025, 12:35:55 am
content: Hello all,UTR2830 Serieshttps://instruments.uni-trend.com/products/lcr-meters/UTR2830Does anyone have this LCR tester UTR2833, maximum test frequency 300kHz, 0.05%, display count 6-bit, maximum test rate 80rdgs/s? The price is very low ~ 1692$ on alibaba, is it worth in time? At this price, they are breaking the market.Does anyone make measurement with UTR2833?Let's share our ideas.

author: KungFuJosh
author_rank: Super Contributor
timestamp: April 29, 2025, 12:44:15 am
content: For that price you can get a better LCR from EastTester's ET35 series. If you want something higher quality and don't need the 300kHz, then I'd look at TongHui or their rebrands.I don't have anything against Uni-T in the lower price range stuff, but that's a lot to trust them with IMO.

author: ovidiu_vr
author_rank: Newbie
timestamp: April 29, 2025, 12:52:29 am
content: For UTR2833E they started with:Display range: R, X, |Z|: 0.00001 Ω ~ 99.9999MΩ;G, B, |Y|: 0.00001μS ~ 99.9999S;L: 0.00001uH ~ 99.9999kH;C: 0.00001pF ~ 9.99999F;D: 0.00001 ~ 9.99999;Q: 0.00001 ~ 99999.9;θd: - 179.999° ~ 179.999 °;θr: - 3.14159 ~ 3.14159;DCR: 0.00001Ω ~ 999.999MΩ;Δ %: - 999.999% ~ 999.999%vs ET3503Cp、Cs：0.001000pF~99.9999FLp、Ls：0.001000nH~99.9999kHRp、Rs、|Z|、Xs：0.001000mΩ~999.999MΩG、B、|Y|：0.001000μS~999.999kSθr：±0.000001rad~3.14159radθd：±0.000001deg~179.9999degD：±0.000001~9.99999Q：±0.001~99999.9The price is low for ET3503, but for how long they will have the same characteristics?

author: KungFuJosh
author_rank: Super Contributor
timestamp: April 29, 2025, 01:46:49 am
content: I've not used either. Martin72 has or had a couple meters from the ET35 series and he said they're the best budget option. IIRC he was happy with the accuracy.In either case, the fixtures will be junk and you'll want to get something better. TongHui makes good fixtures. If you got something like the TH2830, it comes with good fixtures.
R&S SMBV100A Error, need to help! - Page 1
Forum section: electronics / testgear

author: chinhcheng
author_rank: Contributor
timestamp: December 15, 2020, 01:23:54 pm
content: Hi all,I am a newbie, I have received a signal generator from a factory that has some error as below:Is there anybody who can show me the way to resolve these problems?Thank you so much!

author: AJ3G
author_rank: Regular Contributor
timestamp: December 15, 2020, 01:43:23 pm
content: Those are not going to be easy issues to resolve from home. I used to run the same signal generators a few years back. You may want to call R&S in Maryland. Speak to Yale. He used to work for me at the Lab we were using those generators before taking a job with R&S. He is a good guy and will tell you what he knows. Tell Him Rich Sent you.

author: chinhcheng
author_rank: Contributor
timestamp: December 16, 2020, 12:21:46 am
content: Hi AJ3G, tks so much for your informationUnfortunately, I live in Vietnam, so following your guide, I think I should contact RS Vietnam service center for the support.Tks again for your kind support.

author: AJ3G
author_rank: Regular Contributor
timestamp: December 16, 2020, 01:11:54 am
content: Yes, I have been inside the SMBV’s and they are pretty modular. Not impossible to repair to component level, but not going to be easy if its something less than obvious. I have been in the R&S repair facility in Maryland, and from what I could tell, they just swap boards. They may send those boards elsewhere for repair.We used the SMBV primarily for LTE simulation to include experimenting with moving control frequency, and shutting off resource blocks for spectrum sharing. They were very good for this purpose. If you can get it fixed you will have a super fine piece of equipment to utilize.Rich

author: chinhcheng
author_rank: Contributor
timestamp: December 16, 2020, 01:51:02 pm
content: Thank you so much for your informationI also believe that the R&S signal generator better than Keysight one.

author: michal82
author_rank: Contributor
timestamp: April 25, 2025, 03:42:44 pm
content: Did you find out what this “device key missing” error means?I had this one once after a long postal transport on first startup but after restarting it disappeared.
Measall KC901J - Page 1
Forum section: electronics / testgear

author: Battle
author_rank: Contributor
timestamp: April 23, 2025, 08:21:50 pm
content: Just curious has anyone messed with the Measall VNAs much? I wonder if there's any frequency unlocking things that can be done. Similar to how Siglent Spectrum Analyzers can be unlocked for more range. Or if there's any other good tips or tricks to these units.
Hantek DSO02D10 2nd channel inverted ?  - Page 1
Forum section: electronics / testgear

author: IvesH
author_rank: Newbie
timestamp: April 23, 2025, 05:34:01 am
content: Hi all,Checking in to see if somebody has ever had the same on my Hantek DSO02D10 I noticed the channels are inverted ? I can align them by deliberately select invert for one of them in the menu.Both probes connected to the 1Khz reference point then the channels are inverted. I have this scope for a few years now and I only noticed it recently. I have the latest firmware.All feedback appreciated.have a great day,
HP 8566B One Off Option? - Page 1
Forum section: electronics / testgear

author: PA28_140
author_rank: Newbie
timestamp: April 21, 2025, 10:55:00 pm
content: Hi!I recently acquired an old HP 8566B with the 85662A. It's in great condition, bright CRT. It has a custom option (H69). I did check all the publicly available product literature and documentation and found nothing. I've found no other 8566Bs with this option. I did find that H69 is a MATE compatibility option on the HP 70000, however I am confident that that is not it for my 8566B. I emailed Keysight which was a massive waste of time. I was hoping to see if you guys might know anything about this option.Thanks

author: factory
author_rank: Super Contributor
timestamp: April 22, 2025, 09:17:33 am
content: There is a 1994 options list "xls" file that is on the web somewhere.There is no H69 listed for 8566B, but an E69 instead described as (MATE COMPATIBLE USING CIIL COMMANDS W/NATIVE LANG. TURBO NOT SUPORTED)85660A & 85660B have the H69 option listed, "B" description is the same as above, "A" is described as (PART OF 8566A E69 WHICH IS "MATE" COMPATIBLE.).David

author: PA28_140
author_rank: Newbie
timestamp: April 22, 2025, 10:27:55 pm
content: Quote from: factory on April 22, 2025, 09:17:33 amFrom what I have read, the H- prefix usually indicates a custom option or modification. I did just fire the 8566B up and test some MATE/CIIL format commands and those did not do anything. This is still new to me, so I might be missing something. I am going to move it to a different rack next week, so I will open it up when I have it out and see if there is anything different. I did forget this in my original post, but it does have firmware version '2524'.
Rodhe & Schwarz CMU200 B41 part# question - Page 1
Forum section: electronics / testgear

author: Radioman260
author_rank: Contributor
timestamp: April 22, 2025, 12:36:55 pm
content: I need a B41 option module for my CMU200, I have two copies of a service manual and I see part # 1100.2800.02 which I think is the latest service manual part # 1100.4903.82-05In the other manual part # 1100.4903.82-04 I also see 1100.5300.02. I did a scan of ebay and I see all 1100.5300.02.Can I use this (part # 1100.5300.02)? Is there a possibility of a negative effect if installed in a newer unit?Anybody have any for sale?Thank you.

author: sams0el4rif
author_rank: Newbie
timestamp: April 22, 2025, 03:46:13 pm
content: As for finding one, I’d suggest checking with trusted suppliers or forums where parts are sold.Tubidy Mp3
Norma UNILAP 701 X Manual in English - Page 1
Forum section: electronics / testgear

author: tpd
author_rank: Contributor
timestamp: October 03, 2024, 02:24:07 pm
content: Hello,Can anyone share it, please?https://images.kupujemprodajem.com/photos/oglasi/9/17/164848179/tmb-300x300-164848179_65fe91812e8068-014603611.webpThanks

author: coromonadalix
author_rank: Super Contributor
timestamp: October 03, 2024, 04:02:47 pm
content: the 5kv manualthe iso X seems way harder to find ?oh sorry not the iso series ??701x picture of the info panel

author: coromonadalix
author_rank: Super Contributor
timestamp: October 03, 2024, 04:08:42 pm
content: oh sold under Siemens B4110 manual here ans some internals ..IN GERMAN SORRYhttps://www.mikrocontroller.net/topic/534878Siemens_B4110.pdfhttps://www.mikrocontroller.net/attachment/552625/Siemens_B4110.pdfSiemens_B4110_TOC.pdfhttps://www.mikrocontroller.net/attachment/552645/Siemens_B4110_TOC.pdf

author: tpd
author_rank: Contributor
timestamp: October 03, 2024, 04:15:25 pm
content: Thanks, but I was looking for English version, German I have already.

author: coromonadalix
author_rank: Super Contributor
timestamp: October 03, 2024, 04:16:32 pm
content: yeah i edited my previous post before your answer ...if it was sold under Siemens it may exist under another name ...not even sure Siemens as it, End of product lifecycle since: 10.07.08https://mall.industry.siemens.com/mall/en/it/Catalog/Product/7KB4110-8CC

author: colourlessgreenideas
author_rank: Newbie
timestamp: April 23, 2025, 12:28:09 am
content: Here is the 701X English manual.

author: tpd
author_rank: Contributor
timestamp: April 23, 2025, 04:13:41 am
content: Thanks
Rigol DP712 High Resolution Option - Page 1
Forum section: electronics / testgear

author: rkeller
author_rank: Contributor
timestamp: April 21, 2025, 06:56:07 pm
content: to get that extra digit of precision you can choose to pay $63.00 US. For what we are doing it's worth it because we need to measure microamps. Simple, pay online, and I'm waiting for a code to enter to get us into the game, and waiting, and waiting. When I have upgraded other test equipment with this type of built in feature that is unlocked via a code. We've simply got a code or had to input the model number and serial number and within a few nanoseconds, as someone once said "Bobs your uncle". Not with Rigol U.S. It must not be automated and probably has to go through some accounting protocol somewhere and get human OK and keyboarding before we receive a code. Definite room for improvement. After several hours we did reach out to their customer service and they acknowledged the order and that was about it. Still no code. Now I know why it's been hacked, easier and faster...

author: thm_w
author_rank: Super Contributor
timestamp: April 21, 2025, 11:43:14 pm
content: If you are using DP712 to measure microamps, you are using the wrong tool.Readback resolution is 1mA and accuracy is 0.2% + 20mA.As you say can take up to a week:https://www.eevblog.com/forum/testgear/are-rigol-license-keys-automatically-sent-on-purchase/

author: J-R
author_rank: Super Contributor
timestamp: April 22, 2025, 06:34:49 am
content: He probably meant mA.Based on what I've seen from Rigol, I don't think the extra digit for voltage will be meaningful, and the extra digit for current will probably only be meaningful at the lower ends of the scale.Seems like a decent DMM would be the better solution?BTW, both the Keysight E36100 and E36300 series have mA ranges for greatly increased readback accuracy and resolution (varies by model). Also, the calibration procedure is extremely simple and is easily accessed via the front panel menu. If you have a decent DMM, you can complete it in a few minutes.

author: Aldo22
author_rank: Super Contributor
timestamp: April 22, 2025, 07:57:08 am
content: If you really mean microamps, perhaps a so-called process calibrator would be better?Some of them are already available for the price of your module (up to 24mA).In the attached picture 5µA (0.005mA).
...Rohde&Schwarz ZVH4 tracking generator issue - Page 1
Forum section: electronics / testgear

author: VE2UM
author_rank: Contributor
timestamp: July 15, 2024, 04:52:38 pm
content: Hi...At my shop, we currently use a Rohde&Schwarz ZVH4 Antenna/cable/spectrum analyzer.We've been using this portable unit for almost 10 years... but...Two weeks ago, the ZVH4 shown an issue: Noisy s11 / Smith curves and mediocre isolation limits.I analysed the case to find a 50 dB weak tracking generator.On spectrum analyser, the ZVH shows excellent behavior (i can easily measure a -140 dBm signal on a 1 kHz span (30 Hz RBW)), so the "receive" side is no issue.However, in both "Antenna & Cable test" and "Network Analyzer" modes the tracking generator is about 50 dB down, greatly handicapping s11 / Smith measurments (noisy curves) and making isolation tests totally unuseable above a mere 40 dB.On "Antenna & Cable test", the tracking output is the same 50 dB down on both Port 1 and Port 2.Also, TG level (from 0 dBm down to -40 dBm) is linear (from -50 dBm down to -90 dBm).I opened the unit to take pictures to try to spot something revelant w/o success.Our ZVH4 being still useable, i did not go any further (no probing / signal level measurment) with the unit open.Notes:1 - That ZVH4 RF board has SEVERAL SPDT RF switches, mainly 42551 (Peregrine Semi PE42551 9k - 6 GHz SPDT) and S50 / S60 (the nearest device i found on DK is SKY13298-360LF).2 - Several S50 / S60's switches are used in cascade. I suspect that R&S used this arrangment for maximum port-to-port isolation.3 - The "75" devices are probably also RF switches but i didn't want to remove the stickers for reliability purposes.Does anyone have worked with ZVH-4Do you have a service manual or, at least, "Thery of Operation" / block diagramThank you.Normand Martel VE2UM

author: VE2UM
author_rank: Contributor
timestamp: July 15, 2024, 09:33:42 pm
content: More pictures...

author: VE2UM
author_rank: Contributor
timestamp: April 23, 2025, 06:17:59 pm
content: More photos...

author: VE2UM
author_rank: Contributor
timestamp: April 23, 2025, 06:19:12 pm
content: ...more pictures for the ZVH-4 internals

author: VE2UM
author_rank: Contributor
timestamp: April 23, 2025, 06:20:54 pm
content: ...For your eyes only !!!! (PCB RF filter... Lots of search to design these guys...)

author: VE2UM
author_rank: Contributor
timestamp: April 23, 2025, 06:35:02 pm
content: ...more PCB details close to PORT 1.

author: VE2UM
author_rank: Contributor
timestamp: April 23, 2025, 06:36:09 pm
content: RF shield details... Highly complex !
KAIWEETS HT118A or HT118E - Page 1
Forum section: electronics / testgear

author: deriko
author_rank: Newbie
timestamp: April 21, 2025, 07:49:03 am
content: Which one should I buy, and why? 118A has a 600mA fuse and 6000 counts, while the 118E has a 200mA fuse and 20000 counts.I'm struggling to pick the "objectively better one" as I am a newbie who wants something that is good for mostly general/hobbiest use. Something that is accurate and will last a good amount of time.

author: Aldo22
author_rank: Super Contributor
timestamp: April 21, 2025, 09:26:15 am
content: I don't know these meters.I recommend the ZT-225 in this price range for low energy work:https://www.aliexpress.com/item/1005007244323221.html

author: indman
author_rank: Super Contributor
timestamp: April 21, 2025, 11:11:09 am
content: Quote from: deriko on April 21, 2025, 07:49:03 amThe choice depends on what tasks you are going to solve with your counter. It is possible that 118A will be quite enough to solve your problems. Is it possible that you will not have enough 118E to solve other more complex problems? As a beginner, you will need a more expensive option with enhanced protection. And this is another level and, accordingly, the quality and price of the product!
Help help find my license file - Page 1
Forum section: electronics / testgear

author: John smith
author_rank: Newbie
timestamp: April 21, 2025, 01:31:48 pm
content: Hello Gentlemen,This is my first topic in this good place,I want to find my MSO44B /C065157 license file,because I bought it the old one,no original license file,it is different to ask Tek,need your help,Thanks in advance,
SDS2000X Plus some menu items are visualised as "@@@" - Page 1
Forum section: electronics / testgear

author: sja
author_rank: Newbie
timestamp: April 20, 2025, 04:57:53 pm
content: A few menu items on my SDS2000X Plus are shown as @@@. I attach a screenshot of Utility->Menu->System Settings->Date/Time to show what I mean.I've tried recalling the Factory Default, but the problem does not go away.Clearly a software issue.Does anyone know how to workaround it?

author: MarkusAJ
author_rank: Contributor
timestamp: April 20, 2025, 06:55:03 pm
content: Quote from: sja on April 20, 2025, 04:57:53 pmAfter applying the OS update, you must reapply the1.6.2R5.Check this link:https://www.eevblog.com/forum/testgear/siglent-sds2000x-plus-coming/msg5886138/#msg5886138

author: bdunham7
author_rank: Super Contributor
timestamp: April 20, 2025, 07:10:26 pm
content: I had the same issue and I've no idea where I went wrong with the updating process in the first place, but asMarkusAJhelpfully pointed out the updating the OS installs v1.6.2 which is apparently defective and the fix is v1.6.2R5. Download the v1.6.2R5 from the Siglent website and extract just the ADS file to the root directory of a suitable USB flash drive. Turn the scope on, insert the drive and press UTILITY/MAINTENANCE/UPGRADE and find the ADS file and install it.

author: sja
author_rank: Newbie
timestamp: April 21, 2025, 06:08:53 am
content: Thank you very much both of you. That did the trick!
Agilent u3402a DMM AC current offset - Page 1
Forum section: electronics / testgear

author: ander7
author_rank: Contributor
timestamp: April 20, 2025, 05:54:29 pm
content: Recently noticed AC current offset in my Agilent u3402a DMM. Offset value depends on measurement rate and AC current range. DC voltage/current and AC voltage measurements looks aligned with other DMMs.Some examples when nothing is connected to DMM:- 1.3261 mA AC (12 mA range, slow rate)- 132.00 mA AC (1200 mA range, slow rate)AC current measurements are out of spec in slow mode, but looks good if medium or fast rate is selected.Is that a calibration issue or hardware is broken?

author: ander7
author_rank: Contributor
timestamp: April 21, 2025, 04:58:28 am
content: Found similar case on Reddit (https://www.reddit.com/r/Metrology/comments/1flanjy/help_needed_how_to_remove_offset_value_on_agilent/) - AC current offset of 253 mA in slow measurement rate mode is present when nothing is connected to DMM on the second photo. Trying to find schematic for Agilent u3401a/u3402a or Escort 3145a/3146a DMMs.
Uni-T UT-D07B Bluetooth adapter for DMMs - Page 1
Forum section: electronics / testgear

author: keenox
author_rank: Contributor
timestamp: January 23, 2022, 04:08:37 pm
content: Hi!Firstly if this is not the right section, please move the thread.I recently purchased an Uni-T UT-D07B mainly for my UT61E+ (but for other UNI-T meters I have also). It connects to the Android app (iDMM 2.0), but the app doesn't actually display anything. It's totally blank.Has anyone managed to make it work?I would also be interested in an app for PC or an API I could use to create one.Any help greatly appreciated!

author: hapklaar
author_rank: Newbie
timestamp: April 05, 2022, 02:32:43 pm
content: I just bought the same module, for my UT181A, but seem to havce the same issue. I'm able to pair the module with the app, the multimeter chirps twice to indicate a connection (I guess), but then no data in the app. I only see a gauge that doesn;t move.Were you able to get this to work?

author: Shock
author_rank: Super Contributor
timestamp: April 05, 2022, 02:44:56 pm
content: https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/Try this or the PC software that comes with it? Mobile devices and apps are notorious for app connectivity issues. While most Windows stuff has been compatible around vista onwards and older if supported.

author: joeqsmith
author_rank: Super Contributor
timestamp: April 20, 2025, 12:45:22 am
content: I had ran their original Android app without any issues. That app would not load on Android 14. Downloading the 2.0 app, it installs fine. Seems that they now require you register with UNI-T to allow it to work. Sad.

author: joeqsmith
author_rank: Super Contributor
timestamp: April 20, 2025, 10:53:52 pm
content: This phone stuff is all new to me. A quick search, it looks like you can disassemble the original application. I would expect that I could then use the Android Studio to rebuild it for a newer OS.I installed Studio and did their short tutorial. Then tried their emulator. Turning on Bluetooth and attempting to connect, no luck. A quick search in their help:LimitationsThe Android Emulator doesn't include virtual hardware for the following:BluetoothNFCSD card insert/ejectDevice-attached headphonesUSBI was thinking it would just use the PCs hardware and the Windows layers to emulate the Bluetooth. I guess you would just plug and try. Is it 2025??Anyone else try and update that old application? Or the new one for that matter?
Aixun HOT air compatible with nozzles from Quick 861 and Atten 821d? - Page 1
Forum section: electronics / testgear

author: u666sa
author_rank: Frequent Contributor
timestamp: April 17, 2025, 11:10:02 pm
content: Aixun nozzles --https://www.aliexpress.us/item/3256806216510565.htmlQuick nozzles --https://www.aliexpress.us/item/3256806009255051.htmlAtten nozzles --https://www.aliexpress.us/item/3256801220931838.htmlI remember doing research about H314 and reading or watching something about this subject, but I don't remember what exactly was said, because it was half a year ago or so. Now that I am an owner of Aixun H314, I'm wondering if they would fit. I'm especially interested in Atten nozzles, because atten has a certain nozzle that serves as adapter for older generic nozzles for older stations, for which you have nozzles for different BGA chips.

author: thm_w
author_rank: Super Contributor
timestamp: April 18, 2025, 12:13:18 am
content: Wrong forum, you can edit and move it here:https://www.eevblog.com/forum/reviews/Existing threads here:https://www.eevblog.com/forum/reviews/any-options-for-aixun-h310d/https://www.eevblog.com/forum/reviews/aixun-h314-1400w-hot-air-station-has-aixun-jumped-the-shark/"The handle is similar to the Quick 861DW, and the tips are interchangeable, although they differ slightly in mounting diameter."
nanoamp instrument - Page 1
Forum section: electronics / testgear

author: Shimonu
author_rank: Regular Contributor
timestamp: April 15, 2025, 05:58:47 pm
content: I'm working on a battery powered device and I'd like to measure the current consumption both when running and in standby. I'm using an STM32L011 which should have a standby current in the hundreds of nA and at most it should consume tens of mA for short periods.The uCurrent doesn't seem available and I'm not sure it would quite work since it wouldn't autorange even if it can measure all the ranges of interest. I know about the Current Ranger but it seems quite overpriced to me, not great bang for the buck.Budget is pretty flexible as long as it feels worth it. I've looked at some bench multimeters and then I came upon the Otii Arc which seems pretty great. Really pricey(~$1000) but also looks like it does a great job as it's aimed at low power profiling, I'm falling for it a bit. Quite small so it feels good on my limited bench.Is there anything I'm missing that might cost a bit less but still allows me to profile a low power battery device and measure nanoamps with at least 10nA resolution?

author: Kleinstein
author_rank: Super Contributor
timestamp: April 15, 2025, 06:33:21 pm
content: Masuring to the nA range itself is not such an issue. A DMM with 10 M input resistance can us this input resistance as a shunt. The usual 200 mV range would also work as a 20 nA range. Somewhat OK current measurement (though not super accurate) can be done with an external resistor as a shunt. The difficulty is more measuring over a really large dynamic range. For the µC it could help to have a diode in parallel to the shunt, so that it can initially run with a slightly reduced voltage (e.g. some 500 mV) and set up the µC to than measure the current in the sleep mode with mayby a 100 K shunt and only some 10-100 mV at the resistor and diode.

author: Shimonu
author_rank: Regular Contributor
timestamp: April 16, 2025, 10:11:16 pm
content: I've looked a bit into the nRF power profiler 2 and it seems quite useful for a fraction of the price so I think I'll get started with this and it'll likely be good enough. I also realized I don't really want to support the Qoitech subscription model.

author: david300m
author_rank: Newbie
timestamp: April 16, 2025, 10:45:27 pm
content: The PPK2 works great for my Bluetooth LE testing. I recommend double checking the specs to ensure it meet your needs.David

author: Shimonu
author_rank: Regular Contributor
timestamp: April 17, 2025, 06:56:49 pm
content: From the videos I've seen and what I've read about it it should be plenty good. This is also just for hobbyist projects so if it would be a bit off it's no problem. This is all just for my curiosity and fun.
why don't TI and ADI make their own test equipment? - Page 1
Forum section: electronics / testgear

author: Anthocyanina
author_rank: Frequent Contributor
timestamp: April 17, 2025, 09:16:30 am
content: I was putting my analog discovery 2 back in its box after working with it all day and it fell into the box upside down and i saw again the markings on the underside which state "Technology by Texas Instruments", and that made me wonder why they don't make test equipment, and i remembered the analog devices ADALM2000 which is a similar device to the AD2, and i searched if they had any other test equipment thing, and besides the ADALM pluto i couldn't find anything, so that sparked my question, why don't TI and ADI make their own test equipment? they clearly know how those devices work, and they make the chips that basically every test equipment manufacturer uses. does making test equipment need a completely different set of knowledge from that required to make the parts used in test equipment? it seems like since they know how the parts work because they design and make them, they would also know how to put them together to make something like an oscilloscope? is it simply better for a company to focus on the one thing they do instead of tackling multiple areas of the market? I guess HP turning into 3 companies may have had something to do with the company being too diversified?

author: Sorama
author_rank: Frequent Contributor
timestamp: April 17, 2025, 10:21:46 am
content: First “sentence” is probably the longest I have ever read.

author: ch_scr
author_rank: Frequent Contributor
timestamp: April 17, 2025, 10:48:58 am
content: Well, not "full TE" but ready-made modules that are like "almost a device", at least from AD:6 1/2 digit DMM module (not a "full DMM" for various reasons)amazing wideband LCR-meter (only UI is a serial interface)pretty sure there are more...
Singlent SSA3021X Plus / SVA1032X does not complete startup. - Page 1
Forum section: electronics / testgear

author: 808DX
author_rank: Newbie
timestamp: March 28, 2025, 01:48:53 am
content: Hello,In March 2023 with help from several people, I was able to cross flash my SSA3021X Plus to an SVA1032X and enter options.I was able to enjoy the added functionality until March 2025.What I was doing prior to failure.I was aligning an HF radio TX deviation. by sampling a -9.1dBM signal in to this SVA1032X.When done I turned off gear and went to lunch.When I turned on my gear only this instrument failed to start up.Symptom:Power button lit green.press power button.TG button and mode buttons light up green.LCD displays Siglent Logo.TG button and mode button light go off.LCD stays on Siglent Logo.Any help would be appreciated.

author: tautech
author_rank: Super Contributor
timestamp: March 28, 2025, 02:33:34 am
content: Welcome to the forum.Which firmware version were you running ?The last SVA1000X latest version has been pulled from Siglent websites due to some bug but I don't know more.The chaps at the Ohio branch can send you a link to the USB recovery package on request:https://siglentna.com/contact-us/

author: 808DX
author_rank: Newbie
timestamp: March 28, 2025, 03:49:15 am
content: Hello I believe it is running firmware 3.3.2.5 1R1

author: 808DX
author_rank: Newbie
timestamp: March 28, 2025, 03:50:26 am
content: Sorry it should be 3.2.2.5 1 R1

author: 808DX
author_rank: Newbie
timestamp: March 29, 2025, 05:13:30 am
content: THANK YOU Tautech,My instrument is alive as a SSA3032X Plus FW 3.2.2.3.3R1.

author: 808DX
author_rank: Newbie
timestamp: April 16, 2025, 08:32:54 pm
content: Sorry for the late Up date.Life got in the way.Last Post I had used recovery package and got my unit functioning as a SSA3032X Plus with it's all options enabledHowever I had been using it as a SVA1032X for 2 years before it failed to start up.Obviously I wanted it do be an SVA1032X again.Here is what I did.Upgraded SSA3000X Plus Firmware to V3.2.2.5.1R1.performed NAND BU.ADSI looked at the calibration files in the backup, and I see the np_1 and np_2 files for the VNA are still in my unit.Thats good news! No need to telnet or edit anything before cross flash.Looked for and found my copy of hex code edited SVA1000x firmware V3.2.2.5.1R1.Upgraded to that firmware.Success...System shows incorrect model SSA3032X but it is an SVA1032X.Firmware is 3.2.2.5.1R1Serial number and Host ID are intact. YAY!!!License are all valid permanent. did not need to run python script.VNA and DTF functions are present and working. and already have license installed from previous hack back in 2023.So unit is a SVA1032X again.Tested VNA calibrate SOLT and Tested DTF.Sure seems like all is well.
OWON SPE3103 Power Supply -- PC, com port problems - Page 1
Forum section: electronics / testgear

author: u666sa
author_rank: Frequent Contributor
timestamp: April 15, 2025, 03:03:24 pm
content: It says that it lost the connection!I've tried it on two different computers. Same thing. If I use the other software, it actually works.Now, it did work before just fine so what gives now I have no idea. I've tried different cables, different PCs to no avail. What's happening?P.S. I did clean install of Windows 10 on both PCs recently, so perhaps some software misconfiguration?P.S.S. Frankly, now to think about it, I even tried it with same cable on same port a week or so back prior to doing clean install of Windows 10. I don't know what gives here.

author: u666sa
author_rank: Frequent Contributor
timestamp: April 15, 2025, 07:07:57 pm
content: I solved the problem.There is a file in program folder, it's called ini.proInside ini.pro there is a line protocol = modChange it to protocol = comHow in the hell and what is going on? I'm thinking OWON updated the program and made a mistake or something. Because previously everything worked for me just fine.How you suppose to know things like these? I figured it out just by chance. I downloaded software for SPM series power supply and it worked. I went into config files and found a difference. Damn.
AFG3101 reports errors - Page 1
Forum section: electronics / testgear

author: lern01
author_rank: Regular Contributor
timestamp: December 05, 2023, 01:49:45 pm
content: Hi, allMy AFG3101 reports errors during diagnosis and self-calibration, the error codes are 2303 and 1103 respectively, that is CH1 Output offset failure and CH1 Output offset calibration failure. When referring to the maintenance manual, I have doubts about the following maintenance tree. What I understand should be: No, Replace the Genertor board. Yes, Replace the Amplifier board. Asking for your help. I hope you all can make suggestions for repairs. Thank you in advance!

author: alm
author_rank: Super Contributor
timestamp: December 05, 2023, 03:48:49 pm
content: Deja vu:seek help:AFG3000AFG3000 repairRe: Tektronix Arbitrary Function Generators (and Rigol too)

author: lern01
author_rank: Regular Contributor
timestamp: December 06, 2023, 06:58:14 am
content: Quote from: alm on December 05, 2023, 03:48:49 pm

author: lern01
author_rank: Regular Contributor
timestamp: April 14, 2024, 05:51:52 am
content: I have fixed the error. It is a fault of the magnification board, and I have hand-drawn the circuit diagram of the amplifier board. If you need it, please contact me.

author: vylkan
author_rank: Newbie
timestamp: April 15, 2025, 05:36:17 pm
content: Hi! I also have an AFG3101. The error code is diagnosis: 2303, calibration: 1103. Hope you can help. Thank you very much!
Agilent USB DAQ drivers - Page 1
Forum section: electronics / testgear

author: Martin781
author_rank: Newbie
timestamp: April 15, 2025, 07:04:12 pm
content: Hi everyone,I have a question about Agilent USB DAQ U2300A/ U2500A/ U2600A. Does anyone need a license to install and use the device drivers?Thanks.
Do logic analyser cables with test clips at both ends exist? - Page 1
Forum section: electronics / testgear

author: 5U4GB
author_rank: Super Contributor
timestamp: April 15, 2025, 12:48:33 pm
content: I sometimes need to temporarily hook up 8-, 10-, or more-pin setups, which end up covered in wire spaghetti when using standard single-wire-with-grabber-clip connections. My Google fu is failing me on this, there's tons of standard test-clip-to-DuPont-connector ribbon cables for logic analysers around but I can't find any that have test clips at both ends. Worst case I could kludge it by plugging in DuPont-male to DuPont-female ends of cables back-to-back, but it'd be nicer to have a single ready-made cable that does this.The signals going over it are low-speed serial, dry-contact, and similar, so any generic product is fine, I don't need anything exotic.Does anyone know of anything, or an appropriate Google search term, to find this if it exists?

author: RAPo
author_rank: Super Contributor
timestamp: April 15, 2025, 01:01:24 pm
content: I usethese clipson both ends of a Dupont cable.
Hacking the $18 Fnirsi DSO152 portable oscilloscope - Page 1
Forum section: electronics / testgear

author: david.given
author_rank: Contributor
timestamp: April 17, 2024, 09:15:39 am
content: Warning: I made this.As a 200kHz oscilloscope I don't think it's worth much, but as a CH32F103-based Blue pill development board in a nice case with a high-bandwidth screen, battery and charger and USB-C, it's potentially pretty useful.I've since found out that Fnirsi make the DSO153, which is an upgraded model with signal generation support. This looks similar but has a different microcontroller and a more complex board and, obviously, an output analogue stage. I can't get a good picture of what the microcontroller is but it's likely to be an upgraded CH32F. It's another $10 more expensive, which takes it out of the sub-$20 sweet spot of being-cheap-enough-to-buy-as-a-component that the DSO152 is in, but if anyone does want to build a custom diagnostic tool it might still be worth a look...

author: Atlan
author_rank: Frequent Contributor
timestamp: April 17, 2024, 07:09:30 pm
content: One pin is enough for programming ? I program the CH32v003 via the SWDIO pin.

author: david.given
author_rank: Contributor
timestamp: April 18, 2024, 09:07:24 am
content: The V models are RISC-V based, though, and AFAICT they use a different debugging protocol; I've never used one. This one's an ARM and uses the standard two-wire SWD protocol (which is both a good thing, because it's standard, and a bad thing, because it uses two wires...).

author: Just_another_Dave
author_rank: Regular Contributor
timestamp: July 27, 2024, 12:47:46 pm
content: DSO153 is supposedly able to measure up to 1MHz, which could be enough for some testing on the go or for conducting small repairs (e.g checking if a power converter is working fine). However, it seems to be unable to save measurements, so modifying its firmware to be able to send them to a computer over usb could make it more useful

author: coromonadalix
author_rank: Super Contributor
timestamp: July 27, 2024, 02:11:10 pm
content: loll to play pong on itkudos

author: Atlan
author_rank: Frequent Contributor
timestamp: April 02, 2025, 02:51:10 pm
content: I tried upload the (original fnirsi web page) BIN with a new uP but it doesn't work. Could someone fix it?Thank you.P.S: I have the input part redrawn, but only on paper for now.

author: Atlan
author_rank: Frequent Contributor
timestamp: April 14, 2025, 08:45:00 pm
content: Nobody came up with anything? So at least we'll play, added support for the ON/OFF button. Upload code with wch linkE or stlink v2I'm not sure about the relay contacts. Errors are possible.

author: Atlan
author_rank: Frequent Contributor
timestamp: April 15, 2025, 09:51:13 am
content: Added on/off, fixed colors, game level display.
Who made this power connector? Used on BK Precision 3020 and others - Page 1
Forum section: electronics / testgear

author: scopeman
author_rank: Frequent Contributor
timestamp: April 15, 2025, 03:07:43 am
content: Anyone know who made this power connector? It's similar to the PH-163 used on HP equipment but smaller.This example is from a BK Precision 3020 sweep function generator.The manual lists BK's part numbers as 770-018-9-001 and the mating power cable as 420-022-9-001.The two end pins appear to be 7/16 inch apart with the centered ground lower. The receptacle is about 13/16ths wide by 1/2" tall inside.I have looked through several old Allied Electronics catalogs and have come up empty. would like to find an actual drawing or datasheet.The alternative is to hack out this one and put an IEC C6 in there but I would prefer not to have to do that.Thanks!SamW3OHM

author: floobydust
author_rank: Super Contributor
timestamp: April 15, 2025, 03:49:49 am
content: Is this it? Switchcraft AC3G.Drawing here:https://www.eevblog.com/forum/metrology/fluke-ac-dc-differential-voltmeter-893a-main-plug-old-style/msg5794279/#msg5794279

author: scopeman
author_rank: Frequent Contributor
timestamp: April 15, 2025, 03:55:23 am
content: Sorry no it's not that one. That one is the PH-163 common on HP instruments and has wider spacing and the receptacle is deeper.There were two Belden cables that worked with this connector. The caution is that the difference between the two connectors is the hot and neutral were reversed.I guess before the IEC types there was no real standard for the pin mapping. So if you use the wrong one unknowingly on a HP instrument you break the neutral with the power switch instead of the hot side.Thanks for responding anyway.Sam

author: scopeman
author_rank: Frequent Contributor
timestamp: April 15, 2025, 04:00:42 am
content: Here is the site where I found info on the PH-163:http://madrona.ca/e/powerConn/index.htmlAlso here is a link for a 3D printable model and details for the pins. They do work quite nicely if you can find the pins. I have been tempted to try Molex/Waldom 0.093 female contacts with these when I get a chance.https://www.thingiverse.com/thing:4862134Sam
Yokogawa DL-1200 DL-1300 difference? - Page 1
Forum section: electronics / testgear

author: hiwi
author_rank: Newbie
timestamp: April 14, 2025, 03:33:02 pm
content: Hi,as mentioned in the subject, what is the difference between these two models?They seem to be the same from the general specs, some other key mappings, other firmware and PCB layout but what else?I can't find any infos or technical specs for these oscilloscopes.Ralf
JDSU MSAM additional option key - Page 1
Forum section: electronics / testgear

author: pateanatale
author_rank: Contributor
timestamp: April 14, 2025, 01:19:21 pm
content: Hi,i have two JDSU MSAM Module with MTS-8000 mainframe.1° MSAM Module has more additional option enable2° MSAM Module has more additional option disablemy question is this:can i clone the license key of eeprom from 1° MSAM to 2° MSAM?which eeprom are they installed in?can i enable new additional options?On the main board there are two JTAG connections, one 4pin and one 6pin.do you know this kind of form? i can send some photos.thanks for your support.
Hathaway Beta Calibrator Model 235 - Page 1
Forum section: electronics / testgear

author: Taimer81
author_rank: Regular Contributor
timestamp: April 10, 2025, 08:38:58 am
content: Hello!Please help me find the "Master Cal IMMS" program for the "Beta Calibrator Model 235". Mee need to use it to calibrate the device, as far as I understand, this can be done with it.It's old and needs to be taken care of.Thanks.

author: Kean
author_rank: Unknown
timestamp: April 10, 2025, 10:30:58 am
content: Please do not double post.Duplicatehttps://www.eevblog.com/forum/metrology/hathaway-beta-calibrator-model-235-458128/

author: Taimer81
author_rank: Regular Contributor
timestamp: April 10, 2025, 10:49:50 am
content: I didn't post the post correctly. But I could not delete it.I am very sorry.

author: Taimer81
author_rank: Regular Contributor
timestamp: April 12, 2025, 05:22:18 am
content: Please tell me. Now there is a company called Hathaway that produces calibrators. I can't find any information about them on the Internet. I am thinking of contacting them to ask about this program.

author: Aldo22
author_rank: Super Contributor
timestamp: April 12, 2025, 08:57:58 am
content: It says “Martel” on it, doesn't it?It seems to have had something to do with Fluke.https://www.fluke.com/en-us/products/calibration-tools/martel

author: Taimer81
author_rank: Regular Contributor
timestamp: April 12, 2025, 07:51:20 pm
content: User manual

author: Taimer81
author_rank: Regular Contributor
timestamp: April 13, 2025, 03:27:51 pm
content: Calibration was performed 29 years ago.
Owon HDS2102S & Victor 2102S Similar enough to Flash the same Firmware? - Page 1
Forum section: electronics / testgear

author: 0ks
author_rank: Newbie
timestamp: April 12, 2025, 11:23:29 am
content: Hi,I'm in the market for a portable oscilloscope and after some research, I decided to go for an Owon HDS2102S.However, while looking for the Owon, I came across theVictor 2102S, which is nearly identical in terms of specs and functionality but about $40 cheaper than the Owon where I live!The only downside I see with the Victor is that their official website is a bit of a mess, and I couldn't find any firmware updates on it.So, I was wondering if anyone knows if you can flash Owon firmwares onto these Victor scopes?
Thoughts on the ADCMT/ADVANTEST 7461A ? - Page 1
Forum section: electronics / testgear

author: PascalNE
author_rank: Regular Contributor
timestamp: April 11, 2025, 08:19:57 pm
content: I've been looking to buy a new 6.5 digit multimeter to replace my old 1980s ones. I've been intending to get an Agilent 34401a or maybe a kiethley 2000 but have been finding it hard to find one in my price range. I've seen a few 7461As for sale and they seem pretty comparable even having USB and generally being more modern. So has anyone had any experience with one? Are they reliable and as accurate as they claim?Thank you, Pascal.

author: coromonadalix
author_rank: Super Contributor
timestamp: April 11, 2025, 10:19:10 pm
content: so far the other 2 have some schematics and how's to ... advantest not so much ... as for quality, with time you may get answers, maybe there is some teardowns ?

author: PascalNE
author_rank: Regular Contributor
timestamp: April 11, 2025, 10:46:58 pm
content: Yes the lack of good technical documentation is worrying hopefully the fact that it is newer will help it but certainly a consideration.

author: J-R
author_rank: Super Contributor
timestamp: April 12, 2025, 02:04:48 am
content: Have you considered a used 34461A? The large color display is a huge plus in my opinion for daily use.

author: coromonadalix
author_rank: Super Contributor
timestamp: April 12, 2025, 02:38:06 am
content: 34461 get the black ones, they seem less prone to problems3446x i would avoid them in gray white ....

author: PascalNE
author_rank: Regular Contributor
timestamp: April 12, 2025, 07:58:00 am
content: The 34461a is definitely a superior multimeter they just seem to be a lot more money being keysight