hybridfree/eevblog-posts huggingface dataset:
Siglent - do SCPI commands for key strokes or the rotary encoder exist? - Page 1
Forum section: electronics / testgear

author: EE-digger
author_rank: Frequent Contributor
timestamp: October 12, 2024, 05:05:23 pm
content: Specifically for Siglent SVA or SNA but of possible use to all instruments.I've been creating SCPI scripts for functions that either don't exist or for convenience. It would be more than handy if there were SCPI commands for key strokes or especially for knob rotation. Yes, you can program most functions but a knob[nn|up|down] would work when the focus is on any field that takes knob entry, saving tons of work.Any such commands out there ??

author: Tjuurko
author_rank: Regular Contributor
timestamp: October 12, 2024, 06:04:34 pm
content: Look in file "SDG_Programming Guide_PG02-E05C.pdf" section "3.36 Virtual Key Command"https://siglentna.com/download/16164/?tmstv=1728754057This command works since SDM3065X.It might work with SVA or SNA too.

author: EE-digger
author_rank: Frequent Contributor
timestamp: October 13, 2024, 01:53:25 am
content: Thank you. Very interesting. I'll give it a shot with some of their examples and syntax.

author: tautech
author_rank: Super Contributor
timestamp: October 13, 2024, 03:09:30 am
content: Programming manual specific to SVA and SSA analyzers:https://siglentna.com/wp-content/uploads/dlm_uploads/2019/09/ProgrammingGuide_PG0703P_E02B.pdf

author: EE-digger
author_rank: Frequent Contributor
timestamp: October 13, 2024, 03:52:00 am
content: I have the SNA programming manual but did not see any references at all to keys, knobs, virtual keys.Also, tried some commands (knob and up, down related) from the other post and while they "succeed", they don't appear to do anything.

author: egonotto
author_rank: Super Contributor
timestamp: October 13, 2024, 04:27:27 am
content: Hello,I found the “Virtual Key Command” in the program manual for the SDG6000. As far as I can remember, I have also used it successfully.But in the program manual for SDS3000X HD and the linked SSA and SVA program manual this command is not to be found.Could it be that “Virtual Key Command” is a replacement for a web interface?Best regardsegonotto

author: eTobey
author_rank: Super Contributor
timestamp: October 13, 2024, 06:58:14 am
content: Have you just tried this command???You can check out my "webpage"-link. I have succesfully made buttons of my scope trigger things. Also i have made F1-F12 keys control functions of the scope.And i made some neat features ;-)
Rigol DHO800 Clock Calibration - Page 1
Forum section: electronics / testgear

author: monz
author_rank: Contributor
timestamp: October 12, 2024, 09:44:47 pm
content: Hello, I can't seem to find any info on calibration of the DHO800/900 series. I have a DHP814 and when using it's frequency counter it's off by quite a bit. Anyone know how to adjust this or have the calibration manual?I found calibration manuals on Rigol's web site, but they don't list these models.

author: DaJMasta
author_rank: Super Contributor
timestamp: October 12, 2024, 10:21:06 pm
content: How much is quite a bit? If it's more than like half a percent, the likelihood that it's triggering or your source is far greater. It's likely that there is no calibration for the timebase - it's probably a TCXO that's trimmed at the factory and may not even be adjustable on the board.

author: monz
author_rank: Contributor
timestamp: October 12, 2024, 11:40:38 pm
content: For 10.000,000MHz I get 9.999,96MHz. So it looks like it's off by 40Hz. Specs say +- 25ppm which I think makes it just out of spec if I'm interpreting it right. This would give a max low of 9.999,75

author: The Soulman
author_rank: Super Contributor
timestamp: October 12, 2024, 11:59:06 pm
content: 9.999,96MHz is only a 4 ppm error.
Battery resistance meter YR1035+ serial port mod + software - Page 1
Forum section: electronics / testgear

author: Sairus
author_rank: Contributor
timestamp: October 12, 2024, 10:02:58 am
content: Hi there.Recently I play with battery resistance meter YR1035 from YAOREA (pretty useful tool for its price). Then I disassemble it and find something interesting.By design it have ability to communicate with PC by using UART-USB bridge but IC is not populated.After some research I found that IC is CP2102 I ordered cheap module as parts source.Then I take all unpopulated parts from module and instal it to my unit.Success now YR1035 can connect to PC. After connecting it send data by itself.To use this data I write simple software.Features:• Displaying of current readings.• Ability to keep a log of received readings.• Setting up the method of recording data in the log.• Ability to save data to a CSV file.• Setting up colors and OBS mode.• Settings save after closing ap p lication• Embedded documentation (russian and english)Videohttps://www.youtube.com/embed/LuBJ04A4zaMFile link:dropbox.com/scl/fi/0kgq076osb7zf3xxnxeaf/YR1035.exe?rlkey=cnbjk3hmpvoi4vmyd8k8pqt2x&st=7xco6kzj&dl=0orhttps://drive.google.com/file/d/15RiIxyQN5sFVREX_wV8IGdXL4w3nX4p0/view?usp=drive_link

author: xtech
author_rank: Regular Contributor
timestamp: October 12, 2024, 11:32:27 am
content: Nice, thanks for sharing

author: Sairus
author_rank: Contributor
timestamp: October 12, 2024, 01:07:05 pm
content: Logging have three modes:All – all data is written.By time interval – recording at regular intervals (interval can be set in 1 second increments).Lock mode – one-time recording of stable values (you can enable a sound notification about successful recording in the table). Very useful if you need ranged bunch of bateries by voltage or internal resistance just measure then analyse log.https://www.youtube.com/embed/IrXo85dHeKU?si=iYM4-_i4YK9pQLFX
Lecroy Wavepro 7300A serial triggering - Page 1
Forum section: electronics / testgear

author: law
author_rank: Regular Contributor
timestamp: October 10, 2024, 06:20:21 am
content: Hiya,I have a Wavepro 7300A. It has serial decode and can decode SPI well.Has anyone managed to convince these units to do serial triggering? EG off an SPI frame? Or am I wishing too much?Thanks

author: law
author_rank: Regular Contributor
timestamp: October 10, 2024, 06:48:26 am
content: Maybe Wavescan will do what I want.Does anyone happen to have a manual for it? I've had a dig around, but can't seem to find one...

author: nctnico
author_rank: Super Contributor
timestamp: October 10, 2024, 10:03:34 am
content: Quote from: law on October 10, 2024, 06:20:21 amThese scopes have very simple triggering systems in their hardware so no support for pattern triggering which is needed to trigger on a sequence of specific events in a signal. Wavescan is done purely in software so catching a message is unlikely to happen due to lack of speed. In the end the Wavepro 7k series is not very suitable for doing embedded debugging.

author: law
author_rank: Regular Contributor
timestamp: October 14, 2024, 12:16:36 am
content: No problems. I ended up managing to trigger off a different condition that got me the capture I needed.Thanks again
Impedance Measurements? - Page 1
Forum section: electronics / testgear

author: Lowkus
author_rank: Regular Contributor
timestamp: October 12, 2024, 03:15:50 am
content: I'm a beginner at electronics and have a goal of eventually selling in volume what I design, so I want my designs to be professional quality. I've recently been planning a project that is going to involve a high-speed ARM chip and I want to match the impedance correctly as it communicates with other devices on the board...1) Is there an inexpensive way to verify that impedance is matching between devices? Or do engineers favor using hardware measurement tools?2) Should I buy a vector network analyzer to determine impedance? Or some other type of test equipment?3) If I should buy a VNA, I will probably want one that can do 3GHz to 6GHz speeds. Is there a brand/model of VNA you recommend that might fit (or exceed ) that specification?4) I was reading that VNA's are easy to damage. Is that true, and if so how would I use it correctly and safely?5) Does anyone have URL's to the YouTube videos Dave has made related to impedance and how to measure it?

author: noisyee
author_rank: Contributor
timestamp: October 12, 2024, 09:44:08 am
content: For high-speed digital interconnection, like DDR, PCIe, we usually assume devices themself are impedance matched correctly and we designers only care about PCB trace (sometimes plus connectors). We generally have little to no method to verify those devices because 1. they are active termination (not a passive 50ohm resistor) 2. some have variable termination value depending on function or setting 3. some are bi-direction IOs and 4. some have advanced feature to compensate impedance mismatch.Even PCB trace, verify it's characteristic impedance is not cheap. A trusty VNA is already very expensive, fixtures and probes to test trace impedance can easily cost more than an entry-level VNA. Not to mention differential trace require 4-port VNA. Although some DIY probes, like an open coaxial, can perform the test, they are not that accurate and sometimes cause false negative result.If you are serious about your design but can't afford those expensive instruments, I recommend:1. Find a reliable PCB manufacture, their technical team will help you do proper controlled impedance design, some even provide verification report.2. Design and order a small test board if necessary, with only controlled impedance trace (which later will be used on your project) and coaxial connector, then it can be tested and characterized without costly fixture or probe.3. Carefully follow IC manufacturers' design guide and protocol specification.If you really want an instrument, an entry-level VNA would do the job, presume you don't need that high level of measurement accurate or need to provide compliance test report, your main goal is to study the concept and do some experiments.VNA and other RF instruments are sensitive to port overload/over voltage and ESD damage. Follow your instrument user guide and it should last for decade.
digital oscilloscope file format - Page 1
Forum section: electronics / testgear

author: analog pro
author_rank: Newbie
timestamp: October 10, 2024, 05:08:25 am
content: Am having digital oscilloscope owon sds1104.-When i save my waveform into my usb-storage(not internal storage of scope), it only saves in ".bin" format. Is there a way i can change this format from bin to say csv.-Also is there a software that i can use to analysis the waveform i've saved in my usb-storage, whether the format of the waveform is bin or csv or any other?NOTE: I TRIED THE SOFTWARE PROVIDED IN THE CD-ROM BY OWON. THE ISSUE I HAVE WITH IT IS THAT, WHEN YOU SELECT "data table", THE TABLE DOES NOT SHOW THE TIME CORRESPONDING TO THE VOLTAGE DATA-POINTS. Is there a fix for this?Thanks in advance

author: ebastler
author_rank: Super Contributor
timestamp: October 10, 2024, 05:57:06 am
content: I don't have that scope but have checked the user manual (page 29, or page 34 of the PDF file):https://files.owon.com.cn/probook/SDS1104_Four-Channel_Oscilloscope_USER_MANUAL.pdfPress Utility > Function > Save > Type: Wave.Then the menu should offer you a "File Format" option, where you can select BIN, TXT, CSV.Hope this works as advertised! By the way -- when asking such a model-specific question, it's best to put the exact brand and model number in the title of your thread.
SCPI virtual features: Siglent SDS800X HD, SDS2000X HD and the like - Page 1
Forum section: electronics / testgear

author: eTobey
author_rank: Super Contributor
timestamp: September 27, 2024, 08:12:17 pm
content: I created some neat scripts for the Siglent SDS X HD Series. I uploaded it to Gitlab:https://gitlab.com/Tobey16/siglent-virtual-featureIn that link are the informations about it.The following posts are of no relevance.

author: 2N3055
author_rank: Super Contributor
timestamp: September 27, 2024, 09:58:03 pm
content: You opened another one topic for the same thing.. again.

author: Simon
author_rank: Unknown
timestamp: September 28, 2024, 08:32:57 am
content: Where is the other topic?

author: 2N3055
author_rank: Super Contributor
timestamp: September 28, 2024, 08:47:05 am
content: Quote from: Simon on September 28, 2024, 08:32:57 amhttps://www.eevblog.com/forum/testgear/siglent-sds800x-hd-scpi-commands-crashhang-edge-trigger/msg5657147/#msg5657147He does that all the time. Starts one, and then opens another one when he thinks he wants more attention.He has dozens of posts on same (acknowledged) bugs spread across numerous topics.. As soon as 2 days pass, there he goes again.. Because it was not solved yet so he reports it again.He basically wants to bully the solution, creating negative publicity...Annoying as he**..At the end, nobody knows what is going on anymore. In some Siglent topics, there are more of his "look at me" posts than those that are talking about something real.

author: eTobey
author_rank: Super Contributor
timestamp: September 28, 2024, 10:01:40 am
content: Quote from: 2N3055 on September 28, 2024, 08:47:05 amThat topic is me asking for help because of an issue! This one is offering areallyneat script. That is a big enough difference, that i considered opening a new topic.Like i said before:Read and comprehend.... (*whisper*: and save a few words)You (and those who thanked your post - and others) are still keeping on trying to make me look bad. Yes, there were disputes, but its about time to move on, dont you think so?

author: bateau020
author_rank: Frequent Contributor
timestamp: September 30, 2024, 09:02:19 am
content: Looks interesting, can you put it on github? Would be easier than downloading individual files, especially regarding searching for updates.

author: bateau020
author_rank: Frequent Contributor
timestamp: September 30, 2024, 03:01:24 pm
content: Gitlab or GitHub or one of the other public repos, no matter. Thanks.

author: eTobey
author_rank: Super Contributor
timestamp: October 10, 2024, 01:13:23 pm
content: New feature:Switch between measures with cursor on measures with F1-F8 keys.See first post.(Removed msvcrt for keystrokes which was only for windows)
Brüel & Kjær 1" lab microphone differences - Page 1
Forum section: electronics / testgear

author: FrodeM
author_rank: Contributor
timestamp: October 10, 2024, 01:28:29 am
content: Recently I have tried to look into this, but not found any good answer.The first set of Brüel & Kjær 1" laberatory microphone capsules were the 4131/4132 types. These are the free-field and pressure-field versions of practically the same mic, similar to how the 4133/4134 1/2" mics are related and the 4135/4136 1/4" mics are.Later on, they would produce the 4144/4145 pair of 1" lab mics, a pair that immediately replaced the 4131 and 4132. The problem here is that it's clear they did something, but there are no mention in any manual what they did. As soon the new version was out, it's almost as if the old version never existed according to the literature. The 1/2“ and 1/4" versions did for reference not change at the time, on the other hand.So I will ask, do any of you have any idea of what may have changed for the 1" mics, and why?

author: Bryn
author_rank: Regular Contributor
timestamp: October 10, 2024, 06:58:13 am
content: While the microphones somewhat look the same, the newer models are actually optimised for certain things, with the 4144 model for pressure-field measurements and the 4145 for free-field and sound pressure measurements. Should also note that the 4144 model can take measurements within a wider frequency range between 2.6 Hz to 8 kHz.
RTA4000 series (RTA4004) Cursor issue - Page 1
Forum section: electronics / testgear

author: Donald376
author_rank: Newbie
timestamp: October 11, 2024, 04:18:42 am
content: We bought an RTA4004 some time ago and have the latest firmware in it and reported a problem with the use of cursors. R and S agreed that it was an issue and promised a firmware update but that was a couple of years ago and no updates since then. I was wondering how others manage to use the scope without this being a problem.Here is the issue. As an example I took a sample at 200ms / division and 8.33MSa/s on a single trace. I opened a zoomed window and zoomed into 1ms/ division. Then if I use cursors set to vertical mode the cursors skip straight across the zoomed area - so the cursors can not be used in the zoomed area. Sometimes you can get a cursor to appear in the zoomed area but each click of the rotary know jumps it back out of the zoomed area. It is not that the zoomed area is small compared to the sample rate. 1ms has 8330 samples so no issue with time resolution. Normally when the cursors gets to the zoomed area the movement is re scaled to move smoothely through the zoomed area but it seems if you have long sweep times the smallest increment for the cursor is too big.I made a video of it herehttps://drive.google.com/file/d/1td03Oxqv0ewVbjLqrX72WyYuXFH5ydiP/view?usp=sharing. I aint no Youtuber.Do other RTA4000 users see this issue? It seems that zooming in and measuring some time with cursors is a very fundamental activity - are people doing this a different way that is not an issue?
Firmware for Fluke 9100/9100E Calibrator  - Page 1
Forum section: electronics / testgear

author: electronic_guy
author_rank: Regular Contributor
timestamp: October 08, 2024, 02:50:50 pm
content: Hi,I’m looking for Fluke 9100/9100E calibrator firmware update PCMCIA card image any version. Please share with me if anybody has it.Thank you.

author: coromonadalix
author_rank: Super Contributor
timestamp: October 08, 2024, 04:20:17 pm
content: not to be confused with another Fluke 9100 system ..

author: electronic_guy
author_rank: Regular Contributor
timestamp: October 10, 2024, 04:06:28 am
content: Any one who can point me in the right way, please.
East Tester ET54x0, LED simulating - Page 1
Forum section: electronics / testgear

author: Noir_47
author_rank: Newbie
timestamp: October 09, 2024, 03:05:49 pm
content: Hello.Can someone explain how to use such an electronic load to test a dimmable DIY LED driver?If possible, I would like to simulate the current consumption of an LED strip (or single LED) of about 300mA.The real LED strip is powered by 12V and consumes about 2.5A (12W per meter). But it is still on the way.
34901A logger card current measurement burden resistor change during logging - Page 1
Forum section: electronics / testgear

author: KlausKragelund
author_rank: Regular Contributor
timestamp: October 06, 2024, 02:30:09 pm
content: HiI am using a 34901A logger card for current measurement (channel 21)Page 21 of this link:https://www.avionteq.com/Document/34901A-specification-sheet.pdfI have the unit logging voltages also, and have set CH21 to manual range 1ABut when the logger scans the channel, the burden resistors is not fixed on CH21. Seems like it normally shorts out the burden resistor when other channels are captured and opens when it scans the currentThat means the burden resistor changes in the measurement, and affects other measurements.Is it possible to have the burden resistor present always, so the resistance does not change?ThanksKlaus

author: TizianoHV
author_rank: Regular Contributor
timestamp: October 07, 2024, 08:05:08 pm
content: I had your same problem with my 34901A. I almost never use the current channels. I use one of the voltage channels with an external shunt and the math function to display the value scaled in amps.The 34970A uses a 0.1Ohm resistor for the 1A range, and 10Ohm for the 10-100mA ranges. The 0.1Ohm resistor is nothing special.What level of accuracy do you need? I use a 0.2Ohm 5W 20ppm/°C up to 4A or a 1Ohm film resistor for lower currents (consisting of multiple resistors in parallel).

author: Kean
author_rank: Unknown
timestamp: October 08, 2024, 11:39:52 pm
content: Yes, it has to do it this way as there are two selectable current channels on the 34901A but only one current channel implemented in the 34970A meter section.As suggested, you can avoid this by using an external shunt and a voltage channel. Of course you lose the auto ranging feature selecting between the two internal current shunts.
ODP3031 Power Supply - Page 1
Forum section: electronics / testgear

author: raminrajabi
author_rank: Contributor
timestamp: September 15, 2024, 08:29:24 am
content: Hello,I've run into an issue with my power supply during a battery charge test, where I accidentally connected the battery in reverse, resulting in damage to the unit. I replaced the damaged MCP3901A0 IC, which temporarily restored functionality, but the same IC continues to fail whenever I attempt to charge a battery.I contacted the vendor for a replacement board, but they informed me that the product is discontinued due to its age. Unfortunately, they were unable to provide the front-end schematic, citing confidentiality.Upon further inspection, I noticed a blown resistor connected to the voltage sensing circuit. I have marked the Blown resistor in red rectangle with some suspicion resistors in red font in the attached picture. I also replaced the SGM8272 IC for in case they damaged also.If anyone has the same board and could share the resistor values for the components marked in red, or if someone more experienced could assist in identifying the correct values, I would greatly appreciate it.Thank you in advance!

author: raminrajabi
author_rank: Contributor
timestamp: September 15, 2024, 08:40:06 am
content: more pictures.

author: raminrajabi
author_rank: Contributor
timestamp: October 08, 2024, 03:42:25 pm
content: I hope you're doing well.I have managed to draft a schematic for the section of the board where the resistor has blown. Any assistance or insight you could provide would be greatly appreciated.Thank you in advance for your help.
Old Schlumberger Oscilloscope - Page 1
Forum section: electronics / testgear

author: alicejacka
author_rank: Newbie
timestamp: October 06, 2024, 09:45:16 am
content: I recently bought a Schlumberger oct587b oscilloscope, which came with a ce5886b vertical draw, and a btv5851 horizontal draw. Does anyone have a manual or any information about any of these parts?I really appreciate the help,AliceFRENCH:Désolé, je ne parle pas français donc ceci est traduit.J'ai récemment acheté un Schlumberger oct587b, qui était livré avec un tirage vertical ce5886b et un tirage horizontal btv5851. Quelqu'un a-t-il un manuel ou des informations sur l'une de ces pièces ?J'apprécie vraiment l'aide,Alice
Searching for Systron Donner 6152 Frequency Counter Manual - Page 1
Forum section: electronics / testgear

author: KK7DTE
author_rank: Newbie
timestamp: October 10, 2024, 03:36:43 am
content: I bought a beautiful Systron Donner 6152 Frequency Counter and would really appreciate a user/service manual to calibrate it and get it running. Been coming up empty (some people have found the 6152A, which is actually quite a different model). Thanks for any help or leads!
UNI-T UT8802E with Sigrok - Page 1
Forum section: electronics / testgear

author: ThomasL
author_rank: Newbie
timestamp: May 27, 2022, 11:38:10 am
content: Hello everyone,I recently acquired a UNI-T UT8802E bench multimeter. It's a relatively cheap device, and it features USB connectivity. I wanted to use it with Sigrok, but it wasn't supported, so I implemented a driver in libsigrok. It seems to be working fine for me, but I was wondering if any owner of this meter would be interested in giving it a try and test it before I submit the code upstream.Also, I developed that under Debian GNU/Linux 11. I don't know if it would work on Windows-based machines, I suppose it should.Sources are published on GitHub :https://github.com/thlc/libsigrok/tree/feature-uni-t-ut8802eI can assist you if you are unfamiliar with compiling stuff under Linux.Thanks!-Thomas

author: sims070
author_rank: Newbie
timestamp: October 05, 2024, 05:00:05 pm
content: Hey, just acquired one. Any update on this? Thanks
Does anyone have firmware/drivers/software for Aeroflex 3250 spectrum analyzers - Page 1
Forum section: electronics / testgear

author: DaJMasta
author_rank: Super Contributor
timestamp: February 19, 2020, 07:10:11 am
content: As the title says, is there a package available for download anywhere, or maybe a firmware package stashed away on a hard drive somewhere?It runs XP so I'd expect a standard installer, and it would be an easy upgrade if it were available, but while I've seen an application with several different version numbers, I have no idea which is the latest, and with the company buyouts and the many rebrands, I don't think I've yet checked all the places, but I'm out of ideas.The most recent version I've seen is 2.60, but there could be more recent. It should work on 3251/3252/3252/3254 analyzers and any rebrands, so it may be worth uploading somewhere if someone's got access to it.

author: analogRF
author_rank: Super Contributor
timestamp: August 16, 2020, 01:01:22 pm
content: were you able to find any of the software updates for 3250 line?I am looking for V2.60 which I think is probably the last version.

author: Vince38
author_rank: Newbie
timestamp: September 18, 2020, 05:24:07 pm
content: HelloI'm very interested by the firmware too and by the PC software to drive it.I have contacted the support but they said that it's an obsolete analyzer and proposed to me to buy a new analyzer.Best regardsVincent

author: matimati
author_rank: Newbie
timestamp: April 08, 2022, 07:17:28 pm
content: I also would be very happy, if anyone has software for the Aeroflex/Cobham 3250 spectrum analyzers. Even an earlier version than 2.60 would help me much!I have a 3252 with ISA version 2.226 and DSP version 1.3.3.2. These versions do not match and this seems to make the instrument unstable.Thanks for every hint,Matthias

author: analyzerrepair
author_rank: Newbie
timestamp: November 02, 2023, 04:30:41 pm
content: Would you share any version you might have?

author: alexandraquiroshi
author_rank: Newbie
timestamp: October 05, 2024, 07:02:43 am
content: Hello! Can you found new verion Aeroflex 2.60 ?
Old Bob Pease Video, Year? - Page 1
Forum section: electronics / testgear

author: SeoulBigChris
author_rank: Regular Contributor
timestamp: October 04, 2024, 10:22:08 am
content: I stumbled onto this old Bob Pease video where he is the host of a National Semiconductor show. There are many of these on YouTube. I was very aware of Bob Pease from the journals, but somehow his YT presence escaped me back in the day. Anyway, what year were these made, roughly speaking?This particular video they introduce a Tektronix AFG 3252 arbitrary function generator. The engineer from Tektronix is boasting about all the new whiz-bang features, things that we almost take for granted these days. I especially like the floppy disk drive mounted in the oscilloscope in the video (maybe TDS 684A? the resolution is low, hard to make out exactly). Maybe from the mid 2000s?The special IC the engineer mentions, the Generator on a Chip (GOC), did it have a long run, or was it quickly replaced by better and faster ones?https://youtu.be/ap3TlKM-5o4

author: Kean
author_rank: Unknown
timestamp: October 04, 2024, 08:29:39 pm
content: At 4:55 they mention two new products (LMH6702 and LMH6559) which came out around 2003 (based on early datasheets), but the printout they show at 6:25 says May 2005, so that should be close.
EDC 4600 AC Voltage Standard - Service Manual Anyone? - Page 1
Forum section: electronics / testgear

author: scopeman
author_rank: Frequent Contributor
timestamp: October 04, 2024, 05:29:42 pm
content: I have a basket case EDC 4600 AC Voltage standard that I would like to get going. Does anyone have a service manual with schematicsfor this beast?SamW3OHM
Add serial port to Fluke 741B - Page 1
Forum section: electronics / testgear

author: Grubi
author_rank: Contributor
timestamp: February 24, 2017, 09:34:50 pm
content: Hi, here is my first post on eevblogFluke 741B is the little brother of Fluke 743B.http://www.testequipmentdepot.com/fluke/calibrators/744.htmMain difference (what I know for now)is that 743B support some advanced data logging and has RS232 (Canon9) port to download logged data (or transmit this directly) - I guess they have quite a difference on firmware side, but not much on hardware one. Recently I got my hands on used Fluke741B, and was curious to see what is behind cover of what it shoud be a serial port. And - Voila! - there is place for soldering RS232 connector, labeled Fluke 744-3034?Naturally, I can just solder cables to RS232 connector and use RS232 to USB adapter - but I doubt if I really get some data out of it.Anyone test similar thing before me? Good or bad results?I tried to open 741B today, but after easy removing first 6 bolts, it is quite a work to disassemble it further,and today is too late already. On the other side I don't want to damage a working calibrator,which I just start palying with.

author: sprit
author_rank: Regular Contributor
timestamp: April 20, 2023, 06:39:47 pm
content: Hi Grubi,Do you have any update? Yesterday im soldered the DB9 to the pcb but it not working. I think its causes by the missing "T1 transformer".This device has the same design as the Fluke 744, but the Ram part has been reduced by 2 (4 Sram on the 744) and T1 (small transformer located on the RS232 board :palm . My 741 is having booting problems, I I guess it's a software bug, I don't know what to do now, do you have any ideas?SincerelyFeng~

author: michal82
author_rank: Contributor
timestamp: October 04, 2024, 08:00:42 am
content: Replace battery under LCD, RTC chip is connected to power control
Aaronia Spectran V6 ECO - Page 1
Forum section: electronics / testgear

author: probe
author_rank: Contributor
timestamp: October 10, 2024, 06:46:56 am
content: Late to the party here, but Aaronia has an ECO version out of the Spectran V6. It seems juuuust within reach of a hobbyist, even more so if you can send them a copy of your radio amateur license, as then they'll give you a nice discount. With HAM discount the 1RX 9kHz-6GHz version is €1500 ex VAT. The 1RX+1TX 9kHz-6GHz €2525 ex VAT.They seem the real deal. Any reason why I shouldn't replace my "liberated" Siglent SA/VNA and FLexradio HF rig with one of these? What's the catch?https://aaronia.com/en/produkte/spectrum-analyzer/spectran-v6-eco

author: electr_peter
author_rank: Unknown
timestamp: October 10, 2024, 08:20:48 pm
content: Aaronia has offer nice pieces of kit with price tags to match. In context of your current T&M, consider usage of standalone instrument vs USB one. Also check if you need any SW licenses with Spectran ECO.
Excel - Visual Basic - 34401A Execute subroutine from a Function key - Page 1
Forum section: electronics / testgear

author: Jester
author_rank: Frequent Contributor
timestamp: November 10, 2016, 01:42:53 pm
content: I have a working subroutine that gets the desired reading from a HP 34401A DMM and places it into the desired cell when I click on a button that I added to the spreadsheet.However I'm probing the circuit while doing this, so I'm using my left hand to drive the mouse and get it pointing to the button,it would be much better if I could simply tap a key instead up click on the button.I realize that you can assign a Ctrl-Key to initiate a subroutine, but again this is a PITA using a two-sequence key press when trying to simultaneously probe with my right hand.Is there a way to have one of the function keys (F1-F12) initiate the subroutine?I tried the following code (my subroutine is called "Measure_Click), however it does not work.Private Sub Workbook_Activate()Application.OnKey "{F10}", "Measure_Click"End SubIf I can't use a function key, what about some other easy to operate external device for example I could connect a PB switch to a serial port and toggle RTS, I could even mount the PB to the probe handle that would be really slick.Solved I needed to add the name of the worksheet...... this worksPrivate Sub Workbook_Activate()Application.OnKey "{F10}", "LPF.Measure_Click"End Sub

author: dmderev
author_rank: Contributor
timestamp: October 06, 2024, 07:01:22 am
content: Did you solve your problem? I am interested into the same - reading data when needed into Excel while measuring parts manually. Would like to use some USB trigger (a pedal from old mouse or keyboard).Ideally after capture it should go on next row so that the results are collected as table. Anything you could share? Thanks!
IBM-632 diode tester user manual? - Page 1
Forum section: electronics / testgear

author: ASML
author_rank: Newbie
timestamp: October 10, 2023, 08:25:23 pm
content: Hi folks, I'm looking for a manual and more info, it's probably a noval bulb rectifier tester. Inside it needs a 45 or 67.5V plate battery and a glow battery. But how to use is the main goal. I did have a EZ80 rectifier for testing.

author: Paul3456
author_rank: Newbie
timestamp: October 02, 2024, 08:15:13 am
content: Hello,what you have here is a testing device for an IBM pluggable unit containing Germanium crystal diodes and dates from around 1958.The values on the scale are typical testing values for "the minimum back resistance of about 400K and a maximum forward resistance of about 200 ohms".These diodes are mounted on a pluggable unit (see the second module from the left on the added picture). A pluggable unit contains 12 diodes, therefore you have 12 positions on the rotating switch to select the diode you want to test. You need 2 voltages 1) a 1.5V D battery for testing the forward resistance and 2) 90V DC for testing the backward resistance. On the EXT position you can also test single diode via the EXTERNAL inputs.The device exists in 2 versions 1) with a 9 pin tube-style socket for IBM-604 style PU's and 2) a 10 pin tube style socket for IBM 650-style PU's.Do NOT put a tube in the socket as this might create short-circuits.Hope this helps you,Paul
TM 5006 versus 5006A - Page 1
Forum section: electronics / testgear

author: frantisek
author_rank: Regular Contributor
timestamp: October 01, 2024, 08:58:19 am
content: Hello! Can someone please enlighten me on the difference between TM 5006 and TM 5006A? I can't find the TM 5006A somehow. Thank you.

author: Roehrenonkel
author_rank: Frequent Contributor
timestamp: October 01, 2024, 09:56:36 am
content: Ahoi frantisek,Athttps://w140.com/tekwiki/wiki/TM5006you can find manuals for both (right side).The berrytech-links are dead.But why do you ask? Do you have an "-A"?Best regards

author: coromonadalix
author_rank: Super Contributor
timestamp: October 01, 2024, 10:17:34 am
content: wayback machine work to some extenthttps://web.archive.org/web/20210811181902/https://w140.com/tekwiki/wiki/TM5006https://web.archive.org/web/20211130125537/http://barrytech.com/tektronix/tektm500/tektm5006.htmlhttps://web.archive.org/web/20211127031347/http://www.barrytech.com/tektronix/tektm500/tektm5006a.htmlmost notable : was the case color and the ac socket ... one has a switch, the other is only an iec one ??
Tagarno microscope 9 way DSUB controller pinout - Page 1
Forum section: electronics / testgear

author: bobof
author_rank: Contributor
timestamp: October 01, 2024, 07:46:28 am
content: Just picked up a total bargain Tagarno IBIS HD on eBay - which appears to basically be the same as the ZIP minus the OSD. It has some special function colour palettes for contrast enhancement / inversion to aid visual impaired folks - it was sold as a visual aid originally. It's fitted with the same No.4 lens and has the same ~250mm working distance. Looks like it will be a great addition to the lab for what I paid for it (£130!!!).It didn't come with the controller (was apparently optional at the time, according to the manual). Been quoted a ridiculous £450 for it as a replacement part. OK, so it's using a MEC Navimec switch set, but unless the thing is gold plated, it ain't worth that! How complicated can 5 buttons attached to a DSUB be, right?Has anyone either found a pinout or torn down / reverse engineered one of these controllers for doing some custom control etc? There are 5 buttons on the factory controller, but actually on this model for my application only the zoom +/- are useful (maybe adding a 3rd button to press them both simultaneously and switch to manual focus mode). I'd love to add remote zoom / focus control to it.
Fluke 289 internal battery replacement ? - Page 1
Forum section: electronics / testgear

author: tonycstech
author_rank: Regular Contributor
timestamp: October 01, 2024, 10:19:24 pm
content: My fluke keeps telling me to set the time and date every day because i turn it off form the mains and its powered by DC brick instead of batteries.So my guess internal battery is low. It read 1v or less.I think it should be 3v but i dont know for sure. My assumption is based on voltage measurement when meter is ON.OS there a replacement i can buy somewhere ?part number ?Its sport welded so i guess it will be sold with the tabs already spot welded or not ? I cant really solder that battery the way it is because it will overheat and get damaged.

author: coromonadalix
author_rank: Super Contributor
timestamp: October 01, 2024, 11:16:09 pm
content: this is not a battery, its a super capacitor, if its not rusted dont touch itit serves as time memory / clock for logging purposesif you dont put any cells in your battery pack, at one time for sure it will ask to set things, since this capacitor will discharge over time

author: tonycstech
author_rank: Regular Contributor
timestamp: October 02, 2024, 12:17:05 am
content: Quote from: coromonadalix on October 01, 2024, 11:16:09 pmThe whole reason why i have a multi meter is to touch things i am not supposed to.So i followed your advice and put a small rechargeable battery in there. Ill let you know if it blows up

author: tonycstech
author_rank: Regular Contributor
timestamp: October 02, 2024, 12:30:46 am
content: Found a replacement on amazonhttps://www.amazon.com/Pcs-Super-Capacitor-0-2F3-3V-6-8x1-4mm/dp/B099KQZHFNHopefully someone will find it helpful

author: BeBuLamar
author_rank: Super Contributor
timestamp: October 02, 2024, 09:50:07 am
content: Call Fluke and claim it under warranty.

author: coromonadalix
author_rank: Super Contributor
timestamp: October 02, 2024, 10:00:06 am
content: oh he did play in it loll bad boy lollhttps://www.eevblog.com/forum/testgear/fluke-189iian-%28289%29-service-manual/schematics see c145 page 48 of the last thread by dave ............... Full documentyou could put an cr2032 or any 3.3v battery ... maybe one with a holder

author: tonycstech
author_rank: Regular Contributor
timestamp: October 02, 2024, 02:47:25 pm
content: So the battery trick didnt work. It died overnight. Brand new battery and i expect the super capacitor will work even less so.Conclusion: That battery/SuperCap is to keep the memory/clock alive only for a very short period of time to swap batteries.The deeper i go into fluke, the better it gets.Once i am done with the batteries and charging circuit, eBay it goes.

author: coromonadalix
author_rank: Super Contributor
timestamp: October 02, 2024, 03:06:50 pm
content: since you have diodes in the supercap circuit, a coin cell should be able to keep it alive ?? unless you powerdown your meter for long times ? and drains out the cell or the charging battery you triedbut a rechargeable battery in this circuit need more parts at least an resistor in serial or something not to overcharge this battery ??
Anyone familiar with the EMCO OSC-10T scope? - Page 1
Forum section: electronics / testgear

author: psyon
author_rank: Contributor
timestamp: September 28, 2024, 08:58:55 pm
content: I picked this up earlier today for a few bucks at a garage sale. Turns on and appears to function, but I am trying to find out more about it, and if possible find a manual for it. Google searches haven't turned anything up. Anyone familiar with these?

author: Bryn
author_rank: Regular Contributor
timestamp: September 29, 2024, 07:28:15 am
content: Apparently, manuals for that specific kind of oscilloscope are very scarce in general. I would suggest contacting EMCO directly for any manuals they may have in their archives or even for general information on the device itself.

author: tunk
author_rank: Super Contributor
timestamp: September 29, 2024, 10:50:15 pm
content: It could possibly be rebadged.If you open it, you may find some clues about who made it.

author: psyon
author_rank: Contributor
timestamp: September 29, 2024, 11:07:28 pm
content: Quote from: tunk on September 29, 2024, 10:50:15 pmWell, at first I didn't think there was any clues. The PCB says "Oscilloscope 460 S" on it. At first that turned up some Eico models that didn't resemble this at all, but then this page popped uphttps://www.radiomuseum.org/r/eico_oscilloscope_460s.htmlNow the issue there is that when I search for EICO 460S, that is the only one that comes up that resembles this, and the manuals that I find appear to be for older tube versions.
nic 1170 nicolet instrument corporation four ch digital oscilloscope 1978 - Page 1
Forum section: electronics / testgear

author: oz2cpu
author_rank: Frequent Contributor
timestamp: September 26, 2024, 06:56:52 am
content: here is my Nicolet Instrument corporation instrument is called 1170 on the front,model 1174 on the back, plug in module model 171/4 four input signal digitizer,42cm wide, 32cm height, 64 cm deep including heatsink and knobs, it uses 200 watts, weight 35 kg !!20 x 2114 ram chips = 10kbytes, 5 x 2901 CPU / ALU chips with their own micro code run its simple software,serial out done using shift registers and byte to chars converters, all in all a super fun instrument to play with,this maybe also explain the length of the video. Nicolet corp is from madison wisconsin usa, the year 1978 is written on all circuit boards.you see it is also full of wirewrap, i think this reveal either prototype, or very low volume, or they are all adjusted to each customers special needs,anyone know more about this unit ? have seen one ?https://youtu.be/2JooC7lhuiY

author: Kleinstein
author_rank: Super Contributor
timestamp: September 26, 2024, 07:07:50 am
content: Wire wrap was sometimes still used for low volume production units. I have seen an old calculator with a "backplane" done with wire wrap. A really nasty example I have seen was a Cray super computer with a huge pile (~ 10 cm thick from memory) of wire wrap, with all the same colorSome parts look to complex to easy make a 2 layer PCB for this.

author: tggzzz
author_rank: Super Contributor
timestamp: September 26, 2024, 10:21:14 am
content: In the mid 70s, the Modcomp4 computer was completely wirewrap. TTL, naturally, but not one of the faster/later variants since the wirewrap pins acted as stubs.CNC control of wirewrap guns was normal, to reduce the error rate.

author: iMo
author_rank: Super Contributor
timestamp: September 26, 2024, 11:21:36 am
content: Would be great to see it working..The board cpu made of 2901 slices - that o'scope cost you an arm and a leg in '78, my bet..

author: Kean
author_rank: Unknown
timestamp: September 26, 2024, 01:44:58 pm
content: As I commented on the video, Data General microNOVA mini computers from the 70's also had some wire wrapping on their back planes. Although I don't think it was to the same extent as that Nicolet.

author: oz2cpu
author_rank: Frequent Contributor
timestamp: September 29, 2024, 11:57:27 am
content: thanks a lot for all your comments,i think most of the most important comments was added to the YTthat is most uptimal for the future since people will be able to find it at that location,
Fluke 289 no live trend ? - Page 1
Forum section: electronics / testgear

author: tonycstech
author_rank: Regular Contributor
timestamp: September 28, 2024, 01:05:34 am
content: I was under the impression Fluke 289 has live view of a trend/graph but i cant seem to find it anywhere in the menus or buttons.Am i missing something ?Or it can only do recording and then analysis ?If thats true, is there another meter that is not bugger than this that has live view of either voltage or resistance etc that will obviously cost half of that anyway ?

author: smaultre
author_rank: Regular Contributor
timestamp: September 28, 2024, 01:20:22 am
content: You can use handled oscilloscope/or Fluke199 with recorder feature.

author: tonycstech
author_rank: Regular Contributor
timestamp: September 28, 2024, 02:45:21 am
content: I could hire an illegal immigrant for less to sit there and record voltages in real time drawing a graph at same time.Would be cheaper than buying $2K device to do just one thing.

author: J-R
author_rank: Super Contributor
timestamp: September 28, 2024, 03:44:06 am
content: Too many DMMs to count with Bluetooth, IR/USB/serial and either live graphing on the DMM itself or to an app on your phone/tablet/computer.

author: graybeard
author_rank: Frequent Contributor
timestamp: September 28, 2024, 03:50:14 am
content: I have a 189II=287 that has that mode. It worked well once I set it up. I had the RTFM to find it.

author: bdunham7
author_rank: Super Contributor
timestamp: September 28, 2024, 03:53:23 am
content: Quote from: tonycstech on September 28, 2024, 01:05:34 amIt doesn't have that sort of feature, it is only record and "playback" with the on-screen functionality pretty limited. Somehow some people think it works like a low-BW oscilloscope and it doesn't. You can use the IR3000FC adapter and a suitable phone to both view the values remote them and graph them. Or you can use the IR189USB cable and a suitable PC with TestController software. I have all of these and the last one is best for most electronics stuff while the remote method is handy at times for industrial or home electrical work.

author: tonycstech
author_rank: Regular Contributor
timestamp: September 28, 2024, 03:55:51 am
content: I was thinking about Fluke 867B but Fluke 867B is garbage.It does have what i need but it has so many issues with the rotating switch, its incredible it was sold to public without proper testing.It would be OK if they had the turn switch parts for sale but they dont, making that meter obsolete trash.And it takes too much space for what it does. It could be half its size if they wanted to make it compact.

author: BeBuLamar
author_rank: Super Contributor
timestamp: September 28, 2024, 10:19:31 am
content: Get a meter with Fluke Connect. The Fluke Connect apps does do a live view trend. I do it with the 189 and 289 and the IR3000FC module.
Tektronix Raptor (TDS3000) Prototypes - Page 1
Forum section: electronics / testgear

author: nidlaX
author_rank: Frequent Contributor
timestamp: September 29, 2024, 03:46:34 am
content: I'm curious if anyone here ended up purchasing one of the Tektronix Raptor prototype units that were auctioned off in 2018? My notes indicate it may have been part of the Stratos Product Development liquidation, but it's been a while. I was hoping to see a teardown of the unit but didn't want to pay the price of admission at the time.

author: xtech
author_rank: Regular Contributor
timestamp: September 29, 2024, 06:37:29 am
content: Do you have any photos from that auction you can share? Curious how they looks

author: nidlaX
author_rank: Frequent Contributor
timestamp: September 29, 2024, 08:32:44 pm
content: Here are the photos I saved from the reseller on eBay. The item was originally listed as part of the Stratos Product Development asset liquidation auction.Notable differences (aside from the obvious labels) that I see from comparison with a TDS3054:Chassis plastic is smooth, not texturedBattery door cover does not have CAT rating, battery pack model #, or patent informationBattery door lists power rating as 30 Watts max (as opposed to 75 Watts max)Battery door cover design is slightly differentNo DC portNot the DPO boot screen

author: KE5FX
author_rank: Super Contributor
timestamp: September 29, 2024, 10:37:37 pm
content: It's just not the same without theCorporate Memphissplash screen!

author: squadchannel
author_rank: Frequent Contributor
timestamp: September 30, 2024, 12:06:36 am
content: the print button is worn out.i wonder if they had trouble debugging it

author: coromonadalix
author_rank: Super Contributor
timestamp: September 30, 2024, 02:16:07 am
content: what's up with the water droplets ?

author: nidlaX
author_rank: Frequent Contributor
timestamp: September 30, 2024, 08:24:03 pm
content: Quote from: coromonadalix on September 30, 2024, 02:16:07 amProbably seller cleaning it up for presentation without bothering to dry it off.