hybridfree/eevblog-posts huggingface dataset:
Help with Telequipment D83 - Page 1
Forum section: electronics / testgear

author: Dicko101
author_rank: Newbie
timestamp: July 01, 2023, 06:23:56 am
content: Hi guys, I've had a troll through the various threads but I can't find much help. I have a Telequipment D83 with a dual sweep S2A plugin, it was working fine but the trace has disappeared, I think the CRT has stopped working, if anyone can help me diagnose the problem I would be very appreciative. My S2A plugin is also missing the variable time div A and both delay time A and B time/div knobs if anyone knows where I can find replacement parts.The photo isn't mine but it's the same unit with the knobs I'm looking for.Thanks

author: tautech
author_rank: Super Contributor
timestamp: July 01, 2023, 07:41:12 am
content: I had a D83 some years back, nice CRO.These were made when they were a UK division of Tektronix.A look at the buttons pic shows you have the dual timebase engaged.Press A only.Then set Trigger mode to Auto.Do you have manuals ?At one time they were not available but now can be found online:https://w140.com/tekwiki/wiki/Telequipment_D83

author: wasedadoc
author_rank: Super Contributor
timestamp: July 01, 2023, 08:02:20 am
content: Quote from: tautech on July 01, 2023, 07:41:12 amYou missed this bit of the opening post: "The photo isn't mine".

author: tautech
author_rank: Super Contributor
timestamp: July 01, 2023, 09:52:34 am
content: Here's a link to the 3 I uploaded some years back including a list of equivalent parts:https://elektrotanya.com/showresult?what=telequipment-d-83&kategoria=meter&kat2=allYou won't get far servicing these without a 3KV rated meter as the EHT is -2750V !The EHT oscillator stage is known to fail, mine did a couple times and it was busted when I got it however that was a simple fix after finding the 150 Ohm NTC thermistor in series on the unregulated EHT oscillator supply.Many of the high value carbon comp resistors drift way outta spec or even go open such is the stress on EHT components in CRO's.Best advice is to fix it and ensure it's stable then flick it for a modern DSO that will serve you much better instead of robbing valuable hobbyist time fixing old CRO's.
Amrel PPS 2322 GPIB communication problem - Page 1
Forum section: electronics / testgear

author: jordannedev
author_rank: Contributor
timestamp: May 17, 2023, 02:49:44 pm
content: Hi every one!I have very strange problem with my Amrel PPS 2322 power supply.I bought it before 4 weeks from Ebay an till now I can't find from where is the problem with GPIB communication. First when I bought it I find that on boot on the display shows PPS 1203. I bought new 27C512 EPROM and I flash it with the bin file from Kerry D. Wong bloghttp://www.kerrywong.com/2018/01/07/amrel-pps-2322-programmable-power-supply-firmware-backup/and everything else except the GPIB communication is working just fine. The code that I'm using isCode:import pyvisaimport timerm = pyvisa.ResourceManager()print(rm.list_resources())supply = rm.open_resource('USB0::0x03EB::0x2065::GPIB_12_850323137363517141A0::INSTR')supply.write('VSET1 10.0')supply.write('ISET1 0.5')supply.write('VSET2 12.0')supply.write('ISET2 0.5')supply.write('OUT1 1')supply.write('OUT2 1')When I connect the GPIB to USB adaprter on the front panel of the power supply I get indication for remote "RMT" operation and I'm able to see it as device in NI MAX with the correct address. I see it but there is no communication. I get error that "Timeout expired before operation completed". I try with different end characters with out any succeed.I have also Amrel PPS 18-4 that works perfectly fine with the same code.I found this very useful information herehttps://www.eevblog.com/forum/testgear/motech-amrel-pps-1002-diagramschematic/.Based on that I made some measurement with the logic analyser and I found that the NAT7210 CS pin stay always high no mater what I do with the power supply. I replace the GPIB driver ICs SN75ALS160/161 with new one. I trace the pcb and I did not find any interrupted traces. I check 74HC373 and it is working.The pin connections are exactly the same as shown in the schematic diagram in the post.Can some one, who have the same power supply, to read the CPLD GAL16V8B?If you have any other ides what may cause the problem please share

author: coromonadalix
author_rank: Super Contributor
timestamp: May 17, 2023, 04:29:40 pm
content: pls put a black tape on your eeprom window

author: jordannedev
author_rank: Contributor
timestamp: May 17, 2023, 06:05:25 pm
content: The EEPROM have already black tape, don't worry about that

author: jordannedev
author_rank: Contributor
timestamp: May 18, 2023, 07:20:23 pm
content: Any suggestions?

author: Andy Watson
author_rank: Super Contributor
timestamp: May 18, 2023, 07:29:30 pm
content: How does the power supply store calibration and GPIB settings? Is it possible that these have been corrupted?Can you check that it is set to gpib address 12. And that the overvoltage trip levels are not set at zero.

author: rcjoy
author_rank: Regular Contributor
timestamp: June 29, 2023, 11:28:52 pm
content: Check for continuity between each pin at the GPIB port and the connector on the board.I've had those IDC ribbon cable GPIB connectors fail, and in my case it was also on an Amrel PPSpower supply. One of the data I/O bits was open.
USB to IR interface adapter for Fluke (and not only) - Page 1
Forum section: electronics / testgear

author: serggio
author_rank: Regular Contributor
timestamp: May 17, 2016, 08:57:37 pm
content: Today I finished assembling my USB - otpisolated UART converter for connecting Fluke measuring devices with IR interface to PC.I have tested it on Fluke 289, but all Fluke meters with this communication interface can be connected to PC thru this adapter.PCB was completely developed by me for using with FTDI FT232RL chip and TI open collector/drain or push pull comparators for logic level converting. Micro USB socket placed on front of board for connecting to PC. I decided to place IR emitting diode and photodiode on bottom side, but placement in parallel to PCB like in original converter also can be done. Either T1 or T1-3/4 packages diodes can be used as well.

author: serggio
author_rank: Regular Contributor
timestamp: May 19, 2016, 06:51:53 pm
content: With small T1 diodes I find my IR interface adapter very useful with Fluke 287/289. The main idea was place board on top of device to have compact solution even for storing meter with connected adapter. To be honestly, I like it more than original Fluke IR189USB interface cable solution.some photos below:

author: Dubbie
author_rank: Unknown
timestamp: May 19, 2016, 09:45:55 pm
content: Very nice design there! Now you need to CNC a nice enclosure.Sent from my phone using Tapatalk

author: Helix70
author_rank: Unknown
timestamp: May 24, 2016, 10:37:37 am
content: Well done. What IR detector and transmitter leds did you use?

author: serggio
author_rank: Regular Contributor
timestamp: May 24, 2016, 10:39:16 am
content: I use Vishay TEFD4300 + TSAL4400.? ??? iPhoneTapatalk

author: andyB2022
author_rank: Regular Contributor
timestamp: April 11, 2023, 08:29:11 am
content: Hi, any way I can receive gerber with the PCB please?If not, could you tell me the distance between IR led's ? Thx.

author: daisizhou
author_rank: Super Contributor
timestamp: April 11, 2023, 08:40:09 am
content: https://www.mydigit.cn/thread-254306-1-1.html

author: sl1pkn07
author_rank: Newbie
timestamp: June 28, 2023, 06:28:10 pm
content: Hello. this can work with older scopemeter 9x/105b series?greetings
Tenma 72-7570 Schematic - Page 1
Forum section: electronics / testgear

author: Hamster
author_rank: Regular Contributor
timestamp: June 28, 2023, 02:17:13 pm
content: Anybody have any source to the schematics for this power supply? something is a miss with my right channel ( left channel works ) .My Google Foo is failing me.( looks like a Dual Version of a Aim-TTi CPX400SP )

author: Hamster
author_rank: Regular Contributor
timestamp: June 28, 2023, 02:24:42 pm
content: OK, Found this link here:https://www.eevblog.com/forum/repair/sorensen-xpf-60-20dp/Going to confirm its the same unit and post here, if same unit, i will update that post and delete this postThe power supplies are pretty much the same, the Tenma has a different front, not programmable, no RS232/Remote Power/GPIB interface.The Left / Right Power Supply modules have silk screens of CPX400 PCB , the front has CPX400A CONTROL
B&K 8600 Electronic Load Software - Page 1
Forum section: electronics / testgear

author: Rod___
author_rank: Newbie
timestamp: June 27, 2023, 11:45:47 am
content: Hi,We all know that test equipment software can 'suck'. B&K 8600 electronic load software is an example, the version available on their website won't even install on Windows 7 64bit. even though they say it is compatible with Win. 7,8,10I noticed that when Dave eventually got the control software to work he was using Win 7 in video #862.Does anyone know where I can download a Win 7 compatible version of this software, I've been unable to find 'legacy' versions on the net?Many thanks for any help.RegardsRod
Artek manuals digital download orders working again - Page 1
Forum section: electronics / testgear

author: caiser01
author_rank: Regular Contributor
timestamp: June 27, 2023, 09:45:41 pm
content: Just wanted to share with everyone that I was able to get my digital download order filled from Artek Manuals (http://artekmanuals.com).As many people are now aware, the owner of Artek Manuals passed away in April. His widow has been keeping the business running but so far has only been able to fill orders for manuals on CD placed through the ebay store (https://www.ebay.com/str/artekmedia). Orders placed through the website have been appearing to go through but are never fulfilled.I've been messaging her through the ebay store over the last couple of weeks about an order I placed through the website on June 11th before I knew about the issues with the site. She's been very nice and helpful, and I am very happy to report that she was able to send me Dropbox Transfer links for all 10 of the manuals I purchased.I gather from my conversation with her that she is finally getting the issues with the website straightened out. If anyone has an outstanding order they placed through the website that they haven't gotten a refund for, try sending her an email (Manuals@ArtekManuals.com) or a message through the ebay store. Send her a copy of your receipt (that's what I did) and she can probably get your order filled now. Just have some patience, she's still digging out.For my part, I'm really happy with the manuals I purchased. It's a night and day between the Artek manuals and some of the crap scans Agilent put up back in the early 2000s.
Agilent/Keysight Power Supplies, Sense circuitry - Page 1
Forum section: electronics / testgear

author: R. Johnson
author_rank: Newbie
timestamp: June 27, 2023, 05:42:37 pm
content: Hey all,I'm working on an industrial project that requires a super low noise voltage source that is GPIB controlled, 0-100V. The existing equipment utilizes 6634B power supplies, but requirements have gotten more intense and they're too noisy. We've been playing with a B2901 SMU, and it isn't much better. A capacitive multiplier solves the issue, and the test works beautifully.Only issue now is the voltage drop. I tried using the sense+ wired to the output of the active filter but that just sends the 6634B into protection mode. I thought the B2901 was going to work because the output corrects measured with a basic DMM to the right voltage, but looking at it on a scope it is oscillating at some low distorted freq. I could characterize the voltage drop and adjust the GPIB software to compensate for it, but it seems there should be a more elegant solution for correction that I'm not seeing.
Hantek 5102P: latest firmware? - Page 1
Forum section: electronics / testgear

author: proteusmaximus
author_rank: Newbie
timestamp: March 30, 2019, 09:50:12 pm
content: My first post, and I apologize for what I hope is not a silly question. I recently bought my first 'scope; a Hantek 5102P. I thought it wise to update to the latest firmware, but when I went to the Hantek site, I did not find a file with the words "5102P". I did find "DSO5202P" and two files with "DSO5102BM" in their names.So, simple question: are any of these the correct firmware update for the 5102P? If yes, which one? If no, is there another site with the latest firmware?Thank you for your kind reply,Bob

author: rone62
author_rank: Newbie
timestamp: March 30, 2019, 11:45:59 pm
content: http://www.hantek.com/en/ProductDetail_3_26.htmllatest firmware 25/01/2019

author: proteusmaximus
author_rank: Newbie
timestamp: March 31, 2019, 11:15:41 am
content: Thank you

author: QuitButton
author_rank: Contributor
timestamp: December 17, 2020, 04:50:56 pm
content: There's been an updated firmware released, dated 2020-10-09.Its anyone's guess what's changed.

author: luckyme2
author_rank: Newbie
timestamp: March 14, 2021, 10:23:33 am
content: There's been an updated firmware released, dated 2021-02-25.Its anyone's guess what's changed.Still, it's amazing there are still updates for a scope that is 6+ years old

author: sstandfast
author_rank: Newbie
timestamp: June 27, 2023, 03:35:31 pm
content: I know this is an old post, but I just wanted to share an issue I found with the automated measurement functions in this latest firmware version for archival reasons. I have found that the Voltage Amplitude measurement function is only accurate if the displayed waveform has the vertical resolution set such that the waveform spans across at least four vertical divisions. I noticed this when testing a hand-wound transformer; I was inputting a 4Vp-p sine wave and was expecting a 2Vp-p on the output. The displayed waveform looked perfect and the excitation voltage amplitude measured spot on but the measured output amplitude was reading something like 600mVp-p. I had both CH1 and CH2 displayed with a 1V/div vert. resolution and saw peaks of exactly ±2V on the input and ±1V on the output, but the automated measurement was way off for CH2. I changed CH2 to 500mV/div and then the "measured" amplitude value jumped to 2V as expected. I then experimented by playing with the input amplitude and vertical resolutions and determined that the firmware has a quirk (read bug) in that it requires at least 4 vertical divisions of signal displayed before the measurement tools are accurate. This is independent of the channel being measured. Since this is a trap for newbies I thought I'd pass it along.Regards,Shawn
Equivalent of the Agilent 16700/1660 (etc) training kit for the 1692? - Page 1
Forum section: electronics / testgear

author: davidshoe
author_rank: Newbie
timestamp: June 27, 2023, 12:41:46 am
content: I have the HP/Agilent/Keysite training kit (with the small E2433 Credit Card demo board) for the:16500 series1660/70 series16700 seriesI am looking for the equivalent documentation for the 1690 (probably the same as the 1680, 16900). This is when they switched over to windows based software and the UI is quite different.I did find a demo kit on ebay but it has a different board and a $500(usd) price tag, looks like this supports the 90 pin probes but the 1692 uses the older 40 pin probes which just plug into the E2433.Dug around on the keysight website and couldn't find any of the training kit documentation in pdf format. If anyone needs I can scan the docs for the kits I do have. Or is there a good repository of this stuff other than Keysite?
Siglent SDS 1104X-E - Programmatically Set Roll Mode - Page 1
Forum section: electronics / testgear

author: mcmehrtens
author_rank: Newbie
timestamp: June 29, 2023, 02:04:45 pm
content: At my internship, I do a lot of integration and automated reliability testing using the Siglent SDS 1104X-E. All my scripts are written in Python and interface with the scope via its ethernet interface. TheSiglent programming guidehas been very useful in developing my integration and testing scripts.I've searched the web, the programming guide, and this forum—and asked the all-knowing AI chat bots—but I can't seem to find how to enable "Roll" mode on my scope programmatically. I know there's been discussions in other posts about how there are different types of roll modes based on the time divisions, but I don't think that's relevant here. I would simply like to know what commands I need to send to the scope over ethernet to turn the "Roll" mode button on!As a workaround, for now, I have saved a "clean" scope configuration with only-roll mode on and I can recall that when I need to reset the scope and enable roll mode. The steps for this are:1. On the scope, press "Default", "Roll", "Save | Recall", (on-screen now) "Save", change "Save to External" to "Save to Internal", change the "Setup No. #" to you desired configuration, and finally press "Press to Save." The configuration can be recalled manually in a similar way.2. To recall the roll mode programmatically, send the command "*RCL <num>" where <num> is the configuration number in the range [1,20].Cheers,Matt

author: tautech
author_rank: Super Contributor
timestamp: June 30, 2023, 01:49:38 am
content: Welcome to the forum.Fresh reply from Tech support at HQ:For the SDS2000X Plus/XHD/5000/6000, set the roll mode is that ACQ:MODE ROLLFor other product series, The command is "ROLL ON/OFF" <which should work for X-E series DSO's.Please confirm.
Tektronix 2465BCT PSU connectors - Page 1
Forum section: electronics / testgear

author: zabbit@yahoo.com
author_rank: Newbie
timestamp: June 26, 2023, 10:53:20 pm
content: Last week I purchased a Tektronix 2465BCT at an auction that had apparently passed a Portable Appliance Test the day before. But upon inspection all the PCBs were in a separate box so I'm trying to see if I can reassemble it. One of the items that I'm missing are the connectors between the 2 PSU PCBs. So I know to order the 2.54mm inch long gold pins but can anybody tell me what the gold terminals those pins go through are called so that I can order some as a few of them appears to have fallen off the PCB after it was stored badly.Please see picture of the terminals here:https://photos.app.goo.gl/bpS5JWcDmjBuLNrGA
RS Pro RS-14 DMM oddities with low battery. - Page 1
Forum section: electronics / testgear

author: mendip_discovery
author_rank: Super Contributor
timestamp: June 26, 2023, 05:05:21 pm
content: So today I have mostly been calibrating the RS-14 DMMs and let's just say they are not the best but for a cheap general purpose meter they do.Now one thing I had a few times was that the meter would give me some rather shocking readings. 100 mV AC would show as almost 200 mV. I was about to say this meter is a little out then I remembered this has happened before with cheap meters. Put in a new 9 V battery and it's back to where it should be.What I thought was odd was there was no warning from the meter that the battery was low. I measured one of the batteries at 8.7V.Something to keep an eye on if you have odd readings.Laugh of the day was a gentleman being very fussy about me calibrating this thermometer ASAP as he is using it and I might mess up his test if I don't get it back. Well I went to my bench and turned it on, flat battery. Well he managed to get the 9V down to 1.1V and when I asked for a new battery he sheepishly disappeared as everyone stated to take the piss.
Display for METRAHIT 27I - Page 1
Forum section: electronics / testgear

author: tpd
author_rank: Contributor
timestamp: June 20, 2023, 03:08:55 pm
content: Hi,is there replacement for C155-242-CL display for Metrahit 27I?It looks likehttps://www.aliexpress.com/item/1005005540892085.html?spm=a2g0o.productlist.main.11.21d032beWNUHTg&algo_pvid=ceaf579b-112c-4559-9318-e5e96837fd97&algo_exp_id=ceaf579b-112c-4559-9318-e5e96837fd97-5&pdp_npi=3%40dis%21EUR%2150.8%2130.48%21%21%21%21%21%402102160416872733647088305d0745%2112000033468440256%21sea%21SRB%21730250677&curPageLogUid=aG0ITplYJ1Zrdisplay replacement for cheaper Flukes.Thanks

author: coromonadalix
author_rank: Super Contributor
timestamp: June 20, 2023, 03:54:27 pm
content: sadly youll have to try it yourself, cant recall if the 27 is based on known dmm chipset or exclusives one from gossennot aware if gossen is supplying parts or does not

author: RobinLox
author_rank: Newbie
timestamp: June 26, 2023, 10:44:21 am
content: The display for the Metrahit 27I and/or 27M are made specifically for Gossen Metrawatt. You could ask their support if they would sell you one of the displays or you search for a faulty 27I and/or 27M
Siglent SDL 1020X-E DC Electronic Load - Analog Monitor Outputs - Page 1
Forum section: electronics / testgear

author: zburmeister
author_rank: Newbie
timestamp: September 24, 2021, 08:12:24 pm
content: Hello,I have been working with the Siglent SDL 1020X-E Electronic Load for a bit and so far so good. However, I have not been able to get the analog monitor outputs for current and voltage to work on the rear of the unit. I have connected both outputs to an oscilloscope yet there is no activity on the lines. I have also looked extensively through the unit's settings but have not found a configuration to enable/disable the ports. Perhaps it's a firmware issue, perhaps it's a bad device. Does anyone have any advice? Thanks!Here is a link to the user manual. Items 9 and 10 on page 17 are the two ports I am referring to above.http://siglentna.com/wp-content/uploads/dlm_uploads/2019/04/SDL1000X_UserManual_UM0801X-E01A.pdf

author: tv84
author_rank: Super Contributor
timestamp: September 24, 2021, 09:20:41 pm
content: Why didn't you make the question in the Siglent SDL 1020X-E thread?

author: zburmeister
author_rank: Newbie
timestamp: September 24, 2021, 09:49:40 pm
content: Not sure what is wrong with posting where I did? If you could point me to the right place that would be great. Thanks!

author: tautech
author_rank: Super Contributor
timestamp: September 24, 2021, 10:29:47 pm
content: Quote from: zburmeister on September 24, 2021, 09:49:40 pmNot too much however it ends up cleaner for everyone if everything is in one thread.https://www.eevblog.com/forum/testgear/siglent-sdl1000xsdl1000x-e-electronic-load/BTW welcome to EEVblog.

author: zburmeister
author_rank: Newbie
timestamp: September 24, 2021, 10:50:34 pm
content: Thanks, and sounds good. I didn't realize it was preferred to tag onto a generic thread as opposed to a standalone one.Is there a place I can close/remove this thread?

author: Smokey
author_rank: Super Contributor
timestamp: July 01, 2023, 07:31:00 am
content: Here is the link to this discussion in the other thread and the answer to the question:https://www.eevblog.com/forum/testgear/siglent-sdl1000xsdl1000x-e-electronic-load/msg3709318/#msg3709318Quote from: tautech on September 25, 2021, 05:57:53 am
Overview of high-frequency measurement electronics IEEE Microwave Symposium '23 - Page 1
Forum section: electronics / testgear

author: max-bit
author_rank: Frequent Contributor
timestamp: June 26, 2023, 05:10:29 am
content: An interesting review of high-frequency measurement electronics.FromIEEE Microwave Symposium 2023Performed by "The Signal Patch".https://youtu.be/JmB1Exhz1HQMany different devices. However, I was particularly interested in Chinese Siglent productshttps://youtu.be/JmB1Exhz1HQ?t=1279In the past, this company was considered cheap products from the lower shelf (lower than Rigol)And now ?A spectrum analyzer up to 26.5GHz4GHz 20Gs and 12bit oscilloscopeit's no longer fun and jokesI don't know what the ICs are based on (especially the Chinese are uphill from the USA)But it's worth taking disasembly:)Probably someone will say that the leading measuring companies (Tek, HP (Agilent, Keysight or LeCroy) had such solutions more than 10 years ago, but the Chinese do not give up and if the semiconductors were their own product, and that makes you think.

author: tautech
author_rank: Super Contributor
timestamp: June 26, 2023, 07:37:00 am
content: Performed by "The Signal Path".^ correction made
E5071c netwok analyzer problem - Page 1
Forum section: electronics / testgear

author: yuchungchen
author_rank: Newbie
timestamp: June 26, 2023, 02:40:22 am
content: Hello,I got a problem of "phase lock loop unlocked in e5071c.Which board may be broken?Anybody can help me. Thanks

author: DaJMasta
author_rank: Super Contributor
timestamp: June 26, 2023, 05:05:29 am
content: It's not going to be solvable with basic information or explanation over text, but a starting point would be to thoroughly test the symptoms it shows. Does it show with partial spans? Lower RBWs? If you feed in a signal does it appear at the right frequency? Right level? With extra harmonics? With normal looking sidebands?I'd take a look at the manual for the block diagram of the unit, any info on what board is what internally, and if they have a more detailed description of the error message you're getting. Also worth running a more comprehensive self test if one is available - I know the A models had a vba script that would give you some additional board level test info.A unlocked PLL could be an issue with one of its parts, the VCO, the power supply, the main timebase, any of the amplifiers in that chain, a frequency doubler, a cable - any number of things. More detailed testing may start to point you in a clearer direction, and then it's time to crack it open and start measuring.
Looking for a decent linear IC tester - Page 1
Forum section: electronics / testgear

author: dorkshoei
author_rank: Frequent Contributor
timestamp: June 09, 2017, 05:07:22 pm
content: I'm looking for a decent linear/analog IC tester, something that will test voltage regulators, op-amps, analog switches etc. (no ttl).BK Precision 570a looks great but I was looking for something significantly cheaper.eBay is littered with ones from China but:- they all say they supports 1450 diff chips but no list of what they are- most say these chips include TTL etc and I already have an old BK Precision 560 that will test TTL, SRAM etc.

author: St66666
author_rank: Contributor
timestamp: June 24, 2023, 09:41:04 pm
content: Did you find anything?

author: ledtester
author_rank: Super Contributor
timestamp: June 25, 2023, 12:03:08 am
content: Just doing a search on aliexpress right now I found this listing for the DICT-07 make by Kitek Technologies - an Indian company.https://www.aliexpress.us/item/3256803979462430.htmlTheir page of IC tester offerings (scroll down for the product list):http://www.kitektechnologies.com/universal-digital-linear-ic-trainer-kit.php
E5071c error " phase lock loop unlocked  - Page 1
Forum section: electronics / testgear

author: qnhn90
author_rank: Contributor
timestamp: April 10, 2020, 09:34:43 am
content: hi alli have 1 equipment errror Phase lock loop unlocked.can you share for me?thanks!

author: yuchungchen
author_rank: Newbie
timestamp: June 26, 2023, 02:29:03 am
content: Hello,I also got this problem. Have you finally solved this problem? How to solve it and which pcbboard was broken? Thanks.
Firmware / USB drivers for Atten ADS1062CML - Page 1
Forum section: electronics / testgear

author: jezel123
author_rank: Contributor
timestamp: June 22, 2023, 04:21:53 pm
content: So i recently bought a used Atten ADS1062CML for 60USD. Now, i never had an oscilloscope of my own before, i just used the ones at my school. I heard that you should update the firmware, but I cant find anything, not even on the manufacturers website (which now sells only soldering stuff). Also, I downloaded easyscopeX from siglent site, since it seems some atten oscilloscopes are just rebranded siglent, but when i plug in the oscilloscope into my laptop using a usb a to usb b cable it shows up as an unknown usb device. Where can I find either new firmware or usb drivers for the scope?

author: tv84
author_rank: Super Contributor
timestamp: June 22, 2023, 05:01:19 pm
content: Plenty of info in the forum. Flash the Siglent FW and use it as a Siglent.

author: jezel123
author_rank: Contributor
timestamp: June 23, 2023, 04:03:14 pm
content: Nevermind, found what i needed in the forum
Did DreamSourceLab go out of business? - Page 1
Forum section: electronics / testgear

author: slugrustle
author_rank: Frequent Contributor
timestamp: June 25, 2023, 06:27:11 pm
content: I was checking for updates to DSView, the computer software for the DSLogic family of logic analyzers made by DreamSourceLab and found that their website (https://www.dreamsourcelab.com/) is advertising clothing on the front page... Did DreamSourceLab go out of business? Their github (https://github.com/DreamSourceLab/DSView) shows a release for DSView as recently as January.I hope they just forgot to update their domain registration and will fix the issue soon. I really like the performance of their logic analyzers, considering the price.

author: nomead
author_rank: Contributor
timestamp: June 25, 2023, 06:34:37 pm
content: Their sub pages seem to still work.https://www.dreamsourcelab.com/product/dslogic-series/Everything is on sale, maybe this is a bad sign.

author: slugrustle
author_rank: Frequent Contributor
timestamp: June 25, 2023, 07:00:21 pm
content: And now the original page is working for me again. Maybe there was a mistake doing a website update.

author: mwb1100
author_rank: Frequent Contributor
timestamp: June 25, 2023, 09:43:20 pm
content: Quote from: nomead on June 25, 2023, 06:34:37 pmI think everything has been on sale forever, kind of like how oriental rug stores have a permanent “going out of business” sale.

author: SiliconWizard
author_rank: Super Contributor
timestamp: June 25, 2023, 11:56:53 pm
content: Seems to work fine here. Possibly just a temporary DNS issue. Maybe they just didn't renew their domain name in time, or waited till the last minute and it took a while to propagate back.
Handheld nixie DMM from Yugoslavia - Page 1
Forum section: electronics / testgear

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 23, 2023, 09:27:41 am
content: Looks like it needs external power, so maybe doesn't quite count as handheld, but still cool....http://www.crowave.com/blog/2023/03/27/iskra-digimer-1/

author: RoGeorge
author_rank: Super Contributor
timestamp: June 23, 2023, 10:04:28 am
content: Can't believe that!

author: 2N3055
author_rank: Super Contributor
timestamp: June 23, 2023, 11:20:48 am
content: Iskra had very advanced research...https://www.eevblog.com/forum/testgear/which-was-the-first-oscilloscope-with-lcd-display/msg1092048/#msg1092048I still have their Unimer 3....

author: xrunner
author_rank: Super Contributor
timestamp: June 23, 2023, 11:27:51 am
content: Wow. How much time did it take to get the compact packaging right? There is no wasted space at all. Amazing.
Guess which image is captured which what scope - Page 1
Forum section: electronics / testgear

author: luis garcia
author_rank: Regular Contributor
timestamp: June 22, 2023, 10:16:56 pm
content: In the following picture, there are 3 faces, of the same girl. One of these is the original. The other two are video captures made with these scopes: Rigol DHO1000 and Tek MDO3000.https://1drv.ms/i/s!An8EMrce7bcomkH0atV-SACYAVu1?e=nrhEQ2

author: luis garcia
author_rank: Regular Contributor
timestamp: June 22, 2023, 10:25:40 pm
content: Sorry, dont know what happens but the picture is not included! :-(

author: KungFuJosh
author_rank: Super Contributor
timestamp: June 23, 2023, 01:46:13 am
content: You're trying to link to your personal view of your MS OneDrive account. Download the photo and upload it directly to the forum using the Attachements and other options link under the post editor box.

author: radiolistener
author_rank: Super Contributor
timestamp: June 23, 2023, 02:22:51 am
content: What is the question?
HP 8753B VNA with 85046A test set issue - Page 1
Forum section: electronics / testgear

author: numbersix
author_rank: Newbie
timestamp: June 22, 2023, 07:26:16 pm
content: Hello everyone. I recently got hold of an HP 8753B VNA and an 85046 S-parameter test set. I already had an 8753B with a single port test set and really just wanted to get the two port version, but they never come up for sale in the UK on their own. The very first time I tried it I was able to put a 50ohm load onto the S1 port and get a decent reading, then calibrated it with load, open and short and I got a couple of phase cal errors, but it didn't seem to be too bad. Port S2 worked flawlessly. I then went back to port S1 and my trouble really started.On Smith chart mode using S1 there is just a dot in the centre of the chart that never moves. I have tried changing out the NType cables between the VNA and the test set, I've tried my other VNA, but the result is still the same, just a single dot in the middle of the Smith chart for S1, S2 works fine.Does anyone have any suggestions for what it might be? Are these things at all repairable by mere mortals, or should I just get my money back and keep hunting for another one?Any input is appreciated.
RFT Terz Octav Analysator 01004 - Page 1
Forum section: electronics / testgear

author: Jurek_p
author_rank: Newbie
timestamp: June 22, 2023, 03:22:28 pm
content: I'm looking for any info about a DDR era instrument - RFT Terz Octav Analysator 01004.Schematics, manual or other.Thanks in advance.
Agilent 6812B dimmer waveform programming - Page 1
Forum section: electronics / testgear

author: danils
author_rank: Contributor
timestamp: June 21, 2023, 08:05:25 pm
content: So I acquired a broken Agilent 6812B AC power source and put it back into service.In order to test LED bulbs I need to program a leading edge dimming waveform and I managed to do it in excel and load it into the instrument. Programming is done via the Agilent AC GUI utility via GPIB.The problem is that when I activate the output with the custom waveform, I get an error message that the waveform exceed the instrument peak voltage capability (that is 425Vpk or 300Vrms). Output voltage is set to 230Vrms. With the custom waveform the instrument allows me to program a maximum voltage of 212Vrms.I need the custom waveform to be 230Vrms like the default sine. I really don't understand what I'm missing out. Is somebody able to provide any guidance?Thanks

author: DeepLink
author_rank: Regular Contributor
timestamp: June 22, 2023, 05:40:45 am
content: Have you tried with a much lower signal? Like 50VRMS, just to see if your programming is understood correctly by the instrumentCould also be the high dV/dT of your signal/Hans J

author: danils
author_rank: Contributor
timestamp: June 22, 2023, 11:00:08 am
content: My understanding so far is that the Vrms-Vpeak ratio is different from a pure sinewave (Vpeak = Vrms * 1.41).So it's time for me to do some math and find the Vpeak value for the 230Vrms dimmed waveform and check it does not exceed Vpeak limit of the instruments.
does siglent sds1104x-e need a license for wifi connectivity using tl‐wn725n? - Page 1
Forum section: electronics / testgear

author: abdo salm
author_rank: Newbie
timestamp: June 22, 2023, 11:00:46 am
content: as the title implies, I am hesitant to buy Siglent sds1104x-e so I didn't make up my mind yet, but do I have to buy a license for wifi connectivity in sds1104x-e as it seems some features need a license to be bought like function generator functionality and is this oscilloscope worth the price or is there anything in the same price range that's considered to be looked at?

author: KungFuJosh
author_rank: Super Contributor
timestamp: June 22, 2023, 03:25:00 pm
content: Whether you pay for all of the "options" or search threads to make those "improvements" another way is up to you.

author: BillyO
author_rank: Super Contributor
timestamp: June 22, 2023, 06:36:43 pm
content: The SDS1104X-E needs license keys to enable WIFI, AGW control and MSO functionality. However, all these licensee key can be acquired cost free.Search for the thread(s) on hacking the SDS1104X-E.

author: tautech
author_rank: Super Contributor
timestamp: June 22, 2023, 08:23:23 pm
content: Quote from: abdo salm on June 22, 2023, 11:00:46 amWelcome to the forum.Technically yes, however most just hack it using the online script however if you are reluctant to there is another solution we have been discussing to provide WiFi connectivity for SDS2000X Plus which could also be used for any instrument with LAN connectivity.See here and a few posts before:https://www.eevblog.com/forum/testgear/siglent-sds2000x-plus-coming/msg4899938/#msg4899938
New Spectrum Analyzer by UNI-T: UTS3000B - Page 1
Forum section: electronics / testgear

author: Anthocyanina
author_rank: Frequent Contributor
timestamp: April 07, 2023, 10:05:50 am
content: youtube recommended me a video of someone showing how to use this spectrum analyzer. It looks nice. I'm surprised it has not been posted here.https://instruments.uni-trend.com/SpectrumAnalyzers/1831.htmlon alibaba it is being sold for almost 6k o.oand here's the video i saw:strange png file, from uni-t's website

author: spacehen
author_rank: Contributor
timestamp: June 21, 2023, 12:30:16 pm
content: If ken and barbie had a specy

author: nctnico
author_rank: Super Contributor
timestamp: June 21, 2023, 07:26:01 pm
content: It is not exactly cheap like the other Uni-T equipment. I see prices around 2400 euro for the 3.6GHz version.
AC Power Supply for DUT - Page 1
Forum section: electronics / testgear

author: rvalente
author_rank: Frequent Contributor
timestamp: June 21, 2023, 04:41:24 pm
content: Hello Mates,we're required to test electrical heaters (shower heads and boilers) under NBR12090 and IEC60335-2-35. The DUTs should be supplied from the mains, but often the voltage is under or over the required value. Currently a voltagem stabilizer (transformer with 32 taps) is used to correct the voltage.The ideal equipment would be a AC Power supply (like Chroma or similar) but this is out of the labs budget.Accordingly to the standards the power requirements: Single phase @ 127Vac 5500W, 220V up to 12000W at 50 and 60Hz sinusoidal (nowadays we do not test for 50Hz)The standards does not say anything about harmonic distortionWhat would be good AC power supplies alternatives? I've been thinking about solar inverters, Single phase UPS and even industrial VFDsGreetings, Renan
Looking for R&S CRTU Operating Manual - Page 1
Forum section: electronics / testgear

author: RBBVNL9
author_rank: Frequent Contributor
timestamp: June 21, 2023, 07:47:00 am
content: Hi,Would anyone be able to share with me the Operating Manual for the Rohde & Schwarz CRTU? I looked in all the obvious places and fora, and while the Service Manual for this device is all over the place, I cannot find the operating manual...I also understand that this operating manual is also present in digital form on the Windows 2000 HDD partition within that device.There might exist different versions of the Operating Manual for the CRTU-G (/S) and CRTU-W. But, as a start, any of these would help ;-)Thanks a lot in advance!

author: Bicurico
author_rank: Super Contributor
timestamp: June 21, 2023, 07:59:41 am
content: Here you go...For sure not what you are looking for, though.The thing is, the CRTU is a device for mass-testing/quality control, which has the capability of running custom made test applications. In fact, it basically runs Windows 2000 and has drivers for the RF cards installed, which are then used by different apps. I am not even sure, which apps are shipped on default.Regards,Vitor

author: RBBVNL9
author_rank: Frequent Contributor
timestamp: June 21, 2023, 09:36:46 am
content: QuoteThanks so much, greatly appreciated!QuoteWell, did not want to bother people. But I'm looking into the way the IFIQ modules for the CMU200/300 (option CMU-B71) and for the CRTU (option CRTU-B7) are wired.The IQ in- and outputs on the CMU200/300 are on a 15-pin sub-d connector on the back panel. I made an breakout box for that, but wonder whether the I and Q signals are mixed up in the manual.I wanted to see whether the CRTU Operating Manual would be useful here. Now seeing that manual (page 2.10), I note that that the 15-pin connector has been replaced by a 9-pin SUB-D connector. Fair enough. But the pinout provided in that manual does not tell us where the I and the Q information is... Seems they mistakenly copied the pinout of the DATA CH1 connector just above, and forgot to put the right information for the IQ connector. That is not the first mistake I see in the CMU and CRTU manuals...
Siglent SDG1032x Black screen - Page 1
Forum section: electronics / testgear

author: Ziggy
author_rank: Newbie
timestamp: June 23, 2023, 01:07:28 am
content: Anyone have the recovery files for the SDG1032x please send help! I screwed up and loaded an older FW and now I have a blank screen.

author: tautech
author_rank: Super Contributor
timestamp: June 23, 2023, 01:31:37 am
content: Quote from: Ziggy on June 23, 2023, 01:07:28 amWelcome to the forum.HmmmSend PM with your email address.
HP/Agilent/Keysight E3644A, faulty current measurement or user error?  - Page 1
Forum section: electronics / testgear

author: `
author_rank: Newbie
timestamp: February 14, 2017, 01:20:57 am
content: I picked up a Agilent E3644A as working, but I'm not really convinced that it is completely functional.Pressing "display limit" shows some sane values set.Running it through a dummy load and a multimeter shows a happy 500mA flowing- but nothing significant on the meter.Shorting the output in this condition causes it to correctly jump into CC mode, but doesn't update the display other than jumping around in the noise floor. Have I grossly understood how this is supposed to be working, or is the unit faulty? It is cleared so quickly I can't take a photo of it, but the self diagnostic reports no errors.

author: rauldm
author_rank: Regular Contributor
timestamp: June 20, 2023, 04:13:37 am
content: You can calibrate the power supply
Math hidden functions on Tektronix MDO3000 - Page 1
Forum section: electronics / testgear

author: rauldm
author_rank: Regular Contributor
timestamp: June 20, 2023, 01:44:08 am
content: Hi, everyone, I have a MDO3024, that I hacked to MDO3054 thanks to this forum, I working with servomotors, they use resolver sensors or encoders for speed and position feedback, normally the resolver's calibration is based in put angle offset to zero, but some Moog servomotors only work fine with a offset from 8° to 20°. For this work, normally put in X vs Y mode the scope and I use polar cursor available in TDS3000 and MDO3000 oscilloscopes, even in GWinstek GDS2000E series and get a very closed value and servomotor works fine into machine.The GDS2000E also has a math advanced mode even, includes arc tangent, arc sine and arc cosine, with Arc tangent, I get more easy the right offset value for resolver position, BUT tektronix hasnt this functions in its menu, I see datasheet, programing manual and I send a e mail to tektronix, their response was: you need a high series for get arctan functions.Yesterday I playing connenct my MDO to testcontroller software, in math menu it has a edit box for put math expresions, I put atan(CH1) and I get atan in the scope, after I tried measure atan for get angles from resolver sensor finally I can it.I attached some screenshots from scope, I hope this post can help to someone.
Hantek DSO5202p Cal/Waveform Issues - Insight? - Page 1
Forum section: electronics / testgear

author: WhatsICC
author_rank: Contributor
timestamp: June 14, 2023, 04:36:06 am
content: I recently purchased a used DSO5202p second-hand, but there are a few issues I have noticed. I'm having really bad luck with purchasing "working" used scopes apparently...First, the signal on the probe compensation for both channels is very distorted and both channels display 2 different waveforms from the probe comp test point (1khz/5v)(I also adjusted for x10 comp and adjusted the attenuation and tried different probes.)Second, when I go to do the self-cal; it fails at step 28/38. It displays no error code, just black screen and restarts.My first thought was to update the firmware from its 2018 version to the most recent 2021 version from the Hantek website.The update was successful. However, both issues remain. The signal is highly distorted and different on both channels, and self-calibration is still black screening.I have provided pictures, the system info is a picture taken before the firmware update. Yellow is Ch1, Blue is Ch2I am thinking since the waveforms are different between the channels on the test point that this is a component issue... anyone have insight on what could be the issue here?Thank you for any help!

author: WhatsICC
author_rank: Contributor
timestamp: June 19, 2023, 06:06:02 pm
content: Does anyone have a Hantek support contact? I contacted support@hantek.com last week.I heard they generally respond fairly quick. However, I'm having no luck.Does anyone know the best way to contact hantek?Thanks.
Is Artek Manuals working? HP 8640B Opt 323 manual - Page 1
Forum section: electronics / testgear

author: tatel
author_rank: Frequent Contributor
timestamp: June 19, 2023, 11:09:01 am
content: Hi, on June 7th I ordered a manual from Artek Manuals. No CD shipping, I just wanted a link.Still I haven't received the download link. Tried to get in contact twice, via email and web form. No answer.The only thing I received that could be remotely related (because it was received the same June 7th) is some spam pretending to be perhaps from FedEx, but it just included a (not found) image which redirects you to the classic "poll". I really doubt it has something to do with Artek. I have nothing more on my spam folder.It would be easy to log into PayPal to cancel the payment... problem is, manual for the military version of HP 8640B signal generator (opt 323) seems to be available only from Artek.So, have any of you guys experienced something like this? Do you know any other way to get in contact with Artek People?

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: June 19, 2023, 11:43:54 am
content: I read somewhere on this board I think that the owner of Artek past away and the wife does not know how to do the online links. I believe she only sells CD's on Ebay.

author: tggzzz
author_rank: Super Contributor
timestamp: June 19, 2023, 11:44:11 am
content: Quote from: tatel on June 19, 2023, 11:09:01 amYes, as discussed on this forum and others.QuoteNot people; widow.See other responses on this forum and elsewhere.

author: tatel
author_rank: Frequent Contributor
timestamp: June 19, 2023, 01:13:01 pm
content: Ooops... I knew something unusual was to be expected. I just tried to get in contact via eBay right now. Willing to get it on CD if download isn't possible anymore. The manual I need isn't listed, however. I didn't cancel my order on the web site. Wait and see.Thank you all for your answers.

author: jjoonathan
author_rank: Frequent Contributor
timestamp: June 19, 2023, 01:23:07 pm
content: Yes, Artek's widow knows how to log in to ebay but not paypal or the official emails. Make contact through an eBay listing. Even if the item you need isn't listed, pick a listing and send a message.

author: HalFoster
author_rank: Frequent Contributor
timestamp: June 19, 2023, 03:31:42 pm
content: Linda is trying very hard right now to get all of the orders filled - the ePay ones are going fairly smooth but the website ones are pretty much being unseen. She recommends requesting a refund via PayPal for website orders (if placed that way) and reordering on ePay. It is hoped that the website issues will be straightened out before too long but that has not yet happened.Dave will be very much missed and I know that I, for one, truly appreciate the amount of work she is putting in to lessen the backlog in spite of her loss.Hal