hybridfree/eevblog-posts huggingface dataset:
GW Instek GDS-1000 series Remote Display  - Page 1
Forum section: electronics / testgear

author: roadtodream
author_rank: Newbie
timestamp: August 19, 2021, 07:36:02 pm
content: Project now is open sourced, feel free to contribute if you like.https://github.com/RoadToDream/SzRemoteOsc-------------------------------------History------------------------------------------So I have just got my GW Instek GDS-1054B three days ago, enjoy it. Only problem is that it doesn't provide a remote interface.I quickly build a simple program that provides ability to view oscilloscope remotely, plan to add more features to make it a fully operation remote oscilloscope in the next few weeks(300+ apis to it may take a while). Project will open source after it's a little more complete.Windows and macOS version provided. Hope you like it.default IP address is 192.168.0.128 Port 3000Program running on macOS Big Sur starts up slow(especially for fist time, around 20 seconds, afterwards it will be faster, that's also why macOS not having a single file package), there is currently no way to improve(PyInstaller and macOS compatibility), running directly from source file is instant(so will be improved after open source, stay tuned).Let me know if you have any question, it's my first time using Python so there must will be errors(was using C++).email: roadtodream.tech@gmail.com

author: roadtodream
author_rank: Newbie
timestamp: August 30, 2021, 06:34:42 am
content: Project now is open sourced, feel free to contribute if you like.https://github.com/RoadToDream/SzRemoteOsc
BM235 - current measuring oddness - Page 1
Forum section: electronics / testgear

author: Matt-
author_rank: Newbie
timestamp: August 29, 2021, 01:14:17 am
content: Hi!I've been a happy user of my EEVBlog BM235 for a few years, but have recently run into an odd problem.Trying to measure current in the mA range does not allow the target board (a TinyPico) to boot. If I move the lead to the relevant jack for the Amperage range, it works fine, but the resolution is poor (as you'd expect).I broke out my backup meter, a UNI-T UT210E, and it's showing 2.4Ω across the probes when on mA, and 0Ω when across the A jack.Is this typical, is it likely the cause of my issue, and can anyone suggest how to debug?Many thanks in advance.

author: AVGresponding
author_rank: Super Contributor
timestamp: August 29, 2021, 08:01:50 am
content: Meters like this measure current by measuring the voltage drop across a known resistance. For lower currents you need a higher resistance, which introduces a higher "burden voltage", effectively lowering the voltage available to the DUT (device under test).This can result in the voltage being too low for the DUT to work properly. Dave has a video on this (split into two parts):EDIT: You can try to find yourself a solution if you have access to a precision resistor, say 1R 1% (or better, preferably). Connect the 1R in series between your psu and the DUT, and measure the voltage across it with the mV range on your BM235.It'll read 1mV per 1mA, approximately. Note that both the tolerance of the resistor and the accuracy of the meter need to be allowed for, and if the current is high enough it'll heat the resistor and skew the reading more.

author: Matt-
author_rank: Newbie
timestamp: August 29, 2021, 08:41:51 am
content: Awesome advice. Thanks so much, @AVGresponding
Inside the Krautkramer Ultrasonic Flaw Detector USE 1 - Page 1
Forum section: electronics / testgear

author: Camilo71515
author_rank: Newbie
timestamp: August 28, 2021, 10:52:01 pm
content: Hi there! I've finally got my hands on to the Krautkramer machine and decided to share some pictures of this beautiful aparatus with you.Inside of it I could find quite a variety of components, Si and Ge transistors, metal can opamps and DIP IC's, a Nuvistor and some Vaccum tubes.All the modules seem to be in perfect condition with the exception of some jammed potetiometers. I don't know if this works, nor do I have the probe to test it. Sadly I can't repair it since I don't have a need for it nor have the time it may need, so I may use the modular structure to build something else
Just ordered an HP54501A from ebay. Will it be useful for beginner/starter proje - Page 1
Forum section: electronics / testgear

author: Baltic_wh4le
author_rank: Newbie
timestamp: August 28, 2021, 05:19:41 pm
content: Hello. Bit of a noob here. Saw a some posts about the HP 54501 here and i want to ask if it will be ok for just normal use and tabletop breadboard projects?

author: Andrew_Debbie
author_rank: Frequent Contributor
timestamp: August 28, 2021, 05:27:31 pm
content: Never used one, but the specs are not good compared to a modern DSO.10MS/s and 500 points of memory is going to be limiting for many uses, especially for any single shot waveforms. I'm sure it is interesting from a historic point of view.

author: sokoloff
author_rank: Super Contributor
timestamp: August 28, 2021, 05:28:22 pm
content: It’s slow (in terms of max sampling rate), but if the circuits you’re working on are similarly slow (in terms of bandwidth of signals), it’s fine.Hopefully you’re not into it for several hundreds of dollars. At a price point of a decent textbook, you’ll probably learn some things and hopefully enjoy it.

author: merox
author_rank: Regular Contributor
timestamp: August 28, 2021, 08:20:15 pm
content: Quote from: Baltic_wh4le on August 28, 2021, 05:19:41 pmOh dear, I hope it was cheap or at least came with probes because...Quote from: Andrew_Debbie on August 28, 2021, 05:27:31 pmI really love the handling and the UI of the 54501A but it's really kind of useless because of its limited sample rate and memory depth. If the signals you're going to probe are well below 1 Mhz it won't be a problem and you'll have a great scope but otherwise it was a complete waste of money from my point of view.I gladly switched my old 54501A for an even older 54200A because it has a way higher sample rate despite being a 6-bit scope. But since I'm doing mostly digital stuff, that's ok for me.
Fluke 123 continuity buzzer - Page 1
Forum section: electronics / testgear

author: melovelo
author_rank: Newbie
timestamp: August 27, 2021, 08:00:50 pm
content: Fluke 123 scopemeter when set to continuity will sound buzzer intermittently without test probe and common probe touching. I can’t see why so any ideas please.

author: AVGresponding
author_rank: Super Contributor
timestamp: August 28, 2021, 08:28:47 am
content: There's a fair chance of some contaminent or foreign object down in the jacks or on the pcb. Give it a careful clean with IPA and dry it thoroughly and see if that helps.
SONY/TEKTRONIX AWG2020 - Page 1
Forum section: electronics / testgear

author: crj.guy
author_rank: Newbie
timestamp: August 28, 2021, 04:55:12 am
content: Hello All,I don't post a lot of questions asking for help here, generally because I find that the question has already been asked and answered by someone else a few years back.But in this case..HELP!!!!!!I haven't found what I need in the forum so here is my question. I picked up an used Sony/Tektronix AWG2020, with the intention of using it in my poor mans E&E Lab however the input power is set for something other than what we use in the US of 120vac. What I need is a wire diagram or some guidance on how to reconfigure the PSU to 120vac.Can anybody help me?Please?

author: bdunham7
author_rank: Super Contributor
timestamp: August 28, 2021, 05:19:27 am
content: Can you post a photo of the back? According to the manual it appears to work on whatever voltage is provided and I didn't see any procedure for changing it. The back panel may have something different to say.

author: DC1MC
author_rank: Super Contributor
timestamp: August 28, 2021, 05:22:53 am
content: The manual for 2021 (that is not that different) says it should go from 90-250V plus some exotic rack and military voltages and frequencies. So I think it should be OK as the standard US mains.Cheers,DC1MC

author: pcprogrammer
author_rank: Super Contributor
timestamp: August 28, 2021, 05:23:38 am
content: A simple search with google gave me these links.This one is about the repair of such a unit.http://www.jvgavila.com/awg-2020.htmThis one states to have a service manual, but you need a login to get to it.https://www.valuetronics.com/product/awg2020-tektronix-arbitrary-waveform-generator-usedThis is on this blog and is about the restoration of a unithttps://www.eevblog.com/forum/repair/tektronix-awg2020-restoration/This one is the service manual for the 2021. Not sure if it is the same, but see what you can get out of it.https://xdevs.com/doc/Tek/AWG2021.pdf
keysight 3446XA firmware 3.0.3 - Page 1
Forum section: electronics / testgear

author: NoisyBoy
author_rank: Frequent Contributor
timestamp: September 09, 2021, 03:14:02 am
content: For the Keysight 3446XA owners out there, firmware 3.0.3 is out with some fixes to the web UI. Update was painless as usual, I used the front USB to upgrade the units, and I was able to successfully update both a 34461A and 34465A to the latest firmware.Good luck.
In search of:  Dana 5370 nixie tube voltmeter manual - Page 1
Forum section: electronics / testgear

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: March 31, 2018, 06:04:13 pm
content: I just picked up a Dana 5370 voltmeter and would like to restore it. However, I am unable to locate a manual to help in this effort.PLEASE let me know if you have any information.The meter says "dana" only. Not "racal dana". I guess it's to early of a model for that.It might share a manual with the Dana 5330 but I'm not 100% sure.Thanks!

author: JDubU
author_rank: Frequent Contributor
timestamp: April 01, 2018, 07:09:36 pm
content: This?https://www.ebay.com/itm/Dana-5330-5370-Digital-Multimeters-Instruction-Manual-980440-/111909296655

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: April 01, 2018, 08:43:56 pm
content: Quote from: JDubU on April 01, 2018, 07:09:36 pmI already saw that auction BUT the description says it's a manual about some other brands power supply.I emailed the seller to verify if the picture or the description was correct. Have not heard anything in 2 days.

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: April 03, 2018, 01:32:26 pm
content: I was able to find the Dana 5370 manual so thanks to everyone who helped.Now, I'm looking for the manual to the plugin for the 5370.It's aDana 700signal processing unit and has it's own manual. They did not include the plugins in the 5370 manual.I have seen the one listed on the auction site BUT the seller is asking $50. That is a little high for me especially considering what I paid for the 5370.Thanks again!

author: CambridgeMart
author_rank: Regular Contributor
timestamp: August 26, 2021, 12:09:53 pm
content: Old thread I know, but looking for the same information. You mentioned you found the manual, but you didn't say where!
Open Time Server Project - Page 1
Forum section: electronics / testgear

author: dazz1
author_rank: Frequent Contributor
timestamp: August 25, 2021, 10:15:04 am
content: HiSomething I found out there.Knowing that there are those seeking absolute time here is a link:https://github.com/opencomputeproject/Time-Appliance-Project/tree/master/Open-Time-Server/I have no connection to the project.Dazz
New ET5410 - Page 1
Forum section: electronics / testgear

author: gico750
author_rank: Contributor
timestamp: August 26, 2021, 09:41:27 am
content: So, from the first tests made I can say that it behaves well, I have set the language to English, Italian is not there.It is very well made, sturdy and well painted, the beep is perhaps a little too loud while pressing the keys but it can be remedied with a small felt pad attached above the capsule, the fan is very quiet, also correct in the 2021 models in the 2020 was louder, it automatically increases the speed as the temperature rises.The menu is very easy and intuitive so there are absolutely no difficulties in entering the various settings, I tested the battery test function, first in CC (constant current) mode and then in CR (constant resistance)I can immediately say that the 2021 versions like mine already have the updated firmware, carrying out the aforementioned mode (CR) on the battery test, the old versions did not, plus it is possible to continuously adjust the current load during the test .I put photos of the version so maybe you can check for it was in possession of older models.
Tektronix TDS3012B-NV floppy drive? - Page 1
Forum section: electronics / testgear

author: wd5jfr
author_rank: Regular Contributor
timestamp: August 25, 2021, 04:02:34 pm
content: The floppy drive doesn't work anymore and needs to be replaced. Is it a standard IBM floppy drive and are the connections same as a PC?ThanksHank

author: coromonadalix
author_rank: Super Contributor
timestamp: August 25, 2021, 05:31:00 pm
content: seems to be the TEAC-FD-04HF-2300 floppy, it's supposed to be wtih an fpc connectorTDS 3012 wiki, some manuals and a service manual, not sure it's completehttps://w140.com/tekwiki/wiki/TDS3012https://www.ebay.com/itm/TEAC-FD-04HF-2300-OEM-Replacement-for-TEAC-FD-04HF-2300-floppy-drive-3-5-1-44-/264161251659?_ul=IL

author: james_s
author_rank: Super Contributor
timestamp: August 25, 2021, 07:39:04 pm
content: It's a laptop floppy drive, so thinner with a different connector than the ones used in desktop PCs but otherwise similar. There are at least some variations, I swapped parts between an older and newer TDS3000 a while back and found the floppy drive from one wouldn't fit in the front panel of the other but I don't recall the exact details.
Rigol MSO1104Z enabling all options - Page 1
Forum section: electronics / testgear

author: just me
author_rank: Contributor
timestamp: August 25, 2021, 06:43:48 am
content: Hello. I'm kinda new to these forums,so pardon any noob issues. Without going into all the facts,I just want you to know that I'm recovering from a traumatic event,not covid,and I'm partially paralyzed and lacking some of my faculties. I have a Rigol MSO1104Z scope that I would like to enable all the options. I have only succeeded in updating it to the latest firmware. 00.04.04.SP4.I have tried to follow all of the instructions and suggestions but I can't seem to make anything work. I've downloaded compressed files with the GEL files only to not be able to extract anything. And yes I did rename the files to .rar first. PLEASE could someone provide a condensed instructions with needed links to the needed files. PLEASE. I want to give this scope to my nephew before he goes to college with all options enabled. I appreciate any help.

author: Fungus
author_rank: Super Contributor
timestamp: August 25, 2021, 08:41:00 am
content: As you can read in the other thread you posted to, the MSO is much more difficult to hack than the DS model.Short version: You need to open it up and use a JTAG programmer. All the information is in that thread.
Pico SXRTO opinions? - Page 1
Forum section: electronics / testgear

author: moore
author_rank: Contributor
timestamp: August 24, 2021, 04:20:28 pm
content: So PicoTech has a couple of models of a "sampler extended real time oscilloscope", see here:https://www.picotech.com/oscilloscope/9400/sxrto-sampler-extended-real-time-ghz-oscilloscopeI recognize that for a lot of T&M applications this isn't much use vs a true real time scope. But it just might fit my use case - need high BW and have a pulsed kHz source that needs to be triggered on and measured. I've never considered a conventional sampling scope because I would need a sync to trigger on, and even then it would take minutes to build up a waveform.Anyway, curious for opinions on this.

author: DaJMasta
author_rank: Super Contributor
timestamp: August 24, 2021, 05:19:02 pm
content: Sampling scopes meet a lot more of the use cases for high bandwidth scopes (eye diagrams, jitter analysis, etc.) because they were going to be building up intensity or color graded diagrams and statistical analyses from many acquisitions anyways, but the big benefit here and otherwise is price. Only your frontend needs to operate at the full rated bandwidth, and the price here reflects that - only $20k USD for a 4 channel, 16GHz bandwidth scope is only just a realistic price for a similar realtime scope on the used market, and is probably 1/4 to 1/5 the price of your cheapest realtime options on the new market.

author: moore
author_rank: Contributor
timestamp: August 24, 2021, 05:59:28 pm
content: I have a 16GHz RT scope, but it breaks once a year and costs $5-$10k and a month to repair each time. So I am less enthusiastic about the used market than I used to be, at least for high BW, high waveform rate scopes. One of the repair shops said such performance scopes tend to get built right at the bleeding edge of spec and often fail due to overheating after a few years.If I had the $$ for sure I'd just get a new one and extended warranty and not stress about any of this.Anyway, I thought this Pico model was an interesting compromise between sampling and RT.
User/Service manual request for protek 3201 Spectrum analyzer - Page 1
Forum section: electronics / testgear

author: czorgormez
author_rank: Contributor
timestamp: August 26, 2021, 01:41:34 am
content: i have one faulty Protek 3201 spectrum analyser, somehow receiving frequency is shifted around 5 mhz. so i need service manual or at least schematics of this device.
Program to backup data from Tek TDS via Arduino - Page 1
Forum section: electronics / testgear

author: null-a
author_rank: Newbie
timestamp: August 23, 2021, 08:05:47 pm
content: Howdy -- first time poster here.I wrote a small Python program to copy data from my Tektronix TDS540A, using an Arduino running AR488 for the GPIB interface. I thought it might be of interest to some folks here. Here it is:https://github.com/null-a/tek_tds_backup_toolI was already aware of "tektool", but I don't have GPIB hardware compatible with that, so I put this together to make use of what I already had.
Keithley 6500 continuity beeper - Page 1
Forum section: electronics / testgear

author: Ground_Loop
author_rank: Frequent Contributor
timestamp: August 24, 2021, 07:16:32 pm
content: I recently picked up a DMM 6500. The continuity beeper is very faint and I have extreme tinnitus close the beeper frequency. Has anyone else been bothered by the faint beeper enough to attempt a boost? Is there a way to attach pass/fail to the trigger output or one of the IOs on the accessory cards? It is the only bench meter I have with continuity checking and I need it to be useful.
TDS3032 firmware request - Page 1
Forum section: electronics / testgear

author: veedub565
author_rank: Frequent Contributor
timestamp: August 20, 2021, 09:51:16 am
content: Does anybody have a copy of the v3.39 firmware for a Tektronix TDS3032 that I can download ?I want to do the BW hack, but my scope has v1.17 and won't recognise the communication module. I've got v3.41 but that won't work with the hack, so i need something in between.

author: Orange
author_rank: Frequent Contributor
timestamp: August 20, 2021, 12:56:16 pm
content: Here you go

author: coromonadalix
author_rank: Super Contributor
timestamp: August 20, 2021, 05:27:26 pm
content: have fun finding floppies like i did loll

author: veedub565
author_rank: Frequent Contributor
timestamp: August 20, 2021, 07:35:14 pm
content: Ah that's great thanks, I knew someone somewhere would have a copyFloppy discs I got, sorting a working floppy drive is going to be the hard part

author: veedub565
author_rank: Frequent Contributor
timestamp: August 23, 2021, 07:31:43 am
content: Ok So I had a go at this today, discs 1 & 2 loaded ok, disc 3 seemed to load ok but now it's stuck saying insert disc 3, when disc 3 is already inserted. Any idea's ?

author: veedub565
author_rank: Frequent Contributor
timestamp: August 23, 2021, 08:09:23 am
content: **UPDATE**I sorted this now, the discs I was using were probably around 25yrs old. Somone just lent me 4 brand new discs and it updated first time no problems at all. I guess old discs just don't work too good after a while.

author: tv84
author_rank: Super Contributor
timestamp: August 23, 2021, 02:01:38 pm
content: Quote from: veedub565 on August 23, 2021, 08:09:23 amWhen you say brand new, what do you mean? Just manufactured? But these things are still in manufacturing?
Variable Current source 50Hz, AC ,0 - 40A - Page 1
Forum section: electronics / testgear

author: Faringdon
author_rank: Super Contributor
timestamp: August 19, 2021, 11:03:22 am
content: Hi,We need a Variable Current source 50Hz, AC ,0 - 40A.Also, need it to be isolated as it will be injecting current into a small PCB trace which is carrying UK mains live.Ive searched the web but cant find anything at all at any price.Please tell if you know of anything?

author: joeqsmith
author_rank: Super Contributor
timestamp: August 19, 2021, 02:01:01 pm
content: I assume the burden voltage for your device is well under 10V. This was the first hit from Google:http://www.amp-line.com/products/ac-constant-current-sourcesIf you are under 2V, maybe the AL-100-CR-H-S. They don't show the option for 50Hz but they do offer it. I guess you just need to contact them.http://www.amp-line.com/images/PDF/HF-CR%20Adobe%20Data%20Sheets/CR-H-S_and_CR-L-S/AL-100-CR-H-S.pdf

author: threephase
author_rank: Regular Contributor
timestamp: August 20, 2021, 09:15:14 pm
content: A secondary current injection test set will do what you require, but they aren't cheap.The SMRT1 from Megger will inject 30A continuous or up to 60A short duration. Hope you are sitting down when you read this as it will set you back in the region of £8k.There are manually operated test sets available that are cheaper, but they are still in to 4 figures.

author: Helix70
author_rank: Unknown
timestamp: August 23, 2021, 11:40:54 am
content: Also Omicron CMC353 et Al. There is a Chinese one called kingsine that is cheaper, but usable

author: capt bullshot
author_rank: Super Contributor
timestamp: August 23, 2021, 11:54:20 am
content: What's your accuracy and stability requirement?A variac plus a low voltage / high ampere secondary mains transformer may do the job.Maybe something like I've used to adjust a power meter:https://www.eevblog.com/forum/repair/voltech-pm3300-power-meter/msg3541126/#msg3541126
SPD3303 Terminal spacing  - Page 1
Forum section: electronics / testgear

author: gogoman
author_rank: Regular Contributor
timestamp: August 23, 2021, 05:35:23 am
content: Hello the SPD3303 output terminal spacing is wider than the standard banana to BNC connector. Is a wide version of the the banana plug available which connect to the plus and minus terminals.thanks

author: tautech
author_rank: Super Contributor
timestamp: August 23, 2021, 05:46:32 am
content: Yes for these it's 20mm instead of 3/4".Not aware of 20mm banana to BNC adapter availability.
access menu of ref CALIBRATOR level on newer Gigatronics Spanawave power meters - Page 1
Forum section: electronics / testgear

author: yus
author_rank: Contributor
timestamp: August 22, 2021, 03:28:40 pm
content: I have 2 Gigatronics meters: an older 8541C and a newer 8652C. I was always suspecting that their ref 50MHz calibrator levels are lower than the expected 1 mW = 0dBm+- power. Yesterday I had time to check.* older 8541C cal output was about -0.3dBm after 30 min on and continued drifting down,* newer 8652C cal output was about -0.6dBm after 30 min on and continued going down.(From the Gigatronics user manual it is possible to see that their calibrators are not supposed to be continuously on. There is an option to keep it on. But since it is probably not supposed to be on,the design may have not paid much attention to cal power stability.)I did not have time to see if the output is going to level at some time. I may do it later.I also decided to check the calibrator of an old Anritsu ML4803A which was probably not serviced in over 20 years. In contrast to Gigatronics its calibrator was almost spot on at-0.006dBm and the output power did not drift at all.The older 8540C series power meters ( 8541C / 8542C ) are service friendly: the user and maintenance/service manuals are available. The calibrator 0dBm ref level can be adjusted through the menu by the owner.The newer 8650 series power meters ( 8541C / 8542C )are not service friendly: the service manuals are not available(see next post). The user manual still has the Calibrator Verification Procedure. It is the same as for the older 8540C series. But now instead of explaining the procedure for adjusting the calibrator 0dBm ref level the manual just says:If any of the instrument performance characteristics are not within specifications, refer the problem to Giga-tronics Customer Service.I almost sure that there is the same type of adjustment procedure for the calibrator 0dBm ref level on the newer meters. It is just hidden from the user.So, my questions are:* If you know how to activate and access the menu for ref calibrator level adjustment on the newer Gigatronics / Spanawave meters, or* if you know where the service / maintenance manual can be found-- please post it.

author: yus
author_rank: Contributor
timestamp: August 22, 2021, 09:07:47 pm
content: romal76pointed out the answer in the threadGigatronics 8652A power meterA separate service manual for the newer meters do exist openly: "Series 8650A Universal Power Meters Service Manual"https://manualzz.com/doc/6319810/series-8650a-universal-power-meters---gigaand has the description of how to change the CALFACTOR-s. In the manual see:2. Adjustments & Performance Tests -> 2.2 Calibration Procedure -> 2.2.3 1 mW Reference Output Adjustment
Used Test Equipment Reseller in Europe - Page 1
Forum section: electronics / testgear

author: ts125rider
author_rank: Newbie
timestamp: August 09, 2021, 07:49:33 am
content: Hi!In the USA there is big business built around used test equipment refurbishing and reselling. Is there any alternative to this for europeans?We would like to acquire a temperature chamber, which can go up to +175 °C and down to -40 °C (at least). It is crucial to receive a proper invoice as well to the equipment for tax reasons.Thanks and Regards,Mate

author: daqq
author_rank: Super Contributor
timestamp: August 09, 2021, 08:22:57 am
content: There generally are local ones, such ashttps://www.elexbrno.cz/. Not sure about big Europe spanning ones.

author: bateau020
author_rank: Frequent Contributor
timestamp: August 09, 2021, 01:58:51 pm
content: You might tryhttps://www.instrumex.de/. Not sure if they have the equipment you are looking for in stock, but they might be able to find it for you.

author: tszaboo
author_rank: Super Contributor
timestamp: August 09, 2021, 03:47:08 pm
content: We got ours from Amikon.https://www.amikon-shop.de/waerme-klimaschrankThey seem to have chambers like your requirements.

author: ts125rider
author_rank: Newbie
timestamp: August 09, 2021, 04:41:00 pm
content: Thanks for the tips guys!The Amikon Shop looks great!

author: Neper
author_rank: Frequent Contributor
timestamp: August 22, 2021, 08:20:17 pm
content: Rosenkranz have been a household name in Germany for many years:https://www.rosenkranz-elektronik.com/enRalf
Agilent/Keysight X-series spectrum analyzer N9020A Hacking - anyone done this? - Page 1
Forum section: electronics / testgear

author: wldshy
author_rank: Contributor
timestamp: January 02, 2020, 06:13:25 pm
content: Well, it seems an Agilent/Keysight N9020A-503 MXA spectrum analyzer will find the way to me. Unfortunately it seems to come with the basic config, so I wonder if anyone managed to hack any of these or any other X-series spectrum analyzer. Of course my main interest is to enable the N9020A-EDP, N9060A series spectrum analysis extension, N9063A analog demod, N9064A digital demod, N9068A phase noise meansurement, N9069A noise figure meansurement, N9051A pulse meansurement and N6141A EMI test, but getting some of the other options would be nice, too.Any ideas?

author: wldshy
author_rank: Contributor
timestamp: January 02, 2020, 06:16:02 pm
content: following attach some useful file from os.

author: wldshy
author_rank: Contributor
timestamp: January 06, 2020, 05:02:21 pm
content: here paste 2 lic from my 9020 license folder.for reference onlyFEATURE N9020A-EDP agilent 1 permanent uncounted \HOSTID=VDH=N9020A,MY53281892 TS_OK SIGN="0111 225E 25A7 7707"FEATURE N9020A-YAS agilent 1 permanent uncounted \HOSTID=VDH=N9020A,MY53281892 TS_OK SIGN="0358 DE91 3786 7DB7"

author: nexus
author_rank: Regular Contributor
timestamp: August 22, 2021, 05:08:14 am
content: Out of curiosity, was any progress made on enabling software options? I'm assuming your analyer runs windows xp.

author: Bicurico
author_rank: Super Contributor
timestamp: August 22, 2021, 08:38:00 am
content: Not much help, but this seems to be a Globetrotter FlexLM type of license.There are keygen for several products using it, so the algorithm should be easy to find.Of course you will need the seeds, so it becomes necessary to either use a hacked daemon or use IDA Pro on it.

author: tv84
author_rank: Super Contributor
timestamp: August 22, 2021, 02:54:00 pm
content: Quote from: nexus on August 22, 2021, 05:08:14 amAFAICR, wldshy was using a patched software. As such, those licenses that he shows are bogus and only serve to foul the daemon.
How much noise is normal with a TDS7104 - Page 1
Forum section: electronics / testgear

author: Its me
author_rank: Contributor
timestamp: August 22, 2021, 09:10:44 pm
content: Hello experts,without a probe, the oscilloscope will show this noise.Is that normal?RegardsIts Me

author: Johnny10
author_rank: Frequent Contributor
timestamp: August 22, 2021, 09:57:12 pm
content: Mine shows 1.1-2.2 mV peak to peak.Just after start-up

author: Specmaster
author_rank: Super Contributor
timestamp: August 22, 2021, 10:14:50 pm
content: Depending on what the settings are on the inputs, yes it is normal.

author: RolandK
author_rank: Regular Contributor
timestamp: August 23, 2021, 05:15:39 am
content: Your scope is broken - give it to meTo see the noise of the scope you should prevent any pickup with an open input, short the input or put a 50 Ohm Termination on it. And no wire loop...

author: Its me
author_rank: Contributor
timestamp: August 23, 2021, 10:28:04 pm
content: Quote from: RolandK on August 23, 2021, 05:15:39 amDas könnte Dir so passenEven with short-circuited inputs, the noise does not change.When I connect the probe to ground nothing changes in the noise.A connection to Probe Compensation provides this result.I suspected that the capacitors were failing on my TDS7104.My Tektronix TDS 684A oscilloscope that was not used for 9 yearsalso showed this noise. Shortly afterwards it was broken.As it turned out, many capacitors on the TDS 684A have leaked.If the noise on the TDS7104 is normal, I don't need to worry.
N9344C teardown and repair - Page 1
Forum section: electronics / testgear

author: nexus
author_rank: Regular Contributor
timestamp: August 21, 2021, 05:57:13 pm
content: Hey all,Thought I'd share a blog post I put up regarding a recent gamble I made on a handheld SA for auction online.Tearing it down and injecting some power revealed a shorted bulk tantalum capacitor across the input (with the help of a thermal camera).Replacing this failed power component brought the instrument back to life.Also took a look inside a few other pieces, such as the GPS module and "smart" battery pack for fun.Enjoy:https://neonkev.com/2021/08/21/agilent-n9344c-handheld-spectrum-analyzer-repair/
20USD for a cheap analog multimeter, to check polarity - Page 1
Forum section: electronics / testgear

author: Frederico Acardi
author_rank: Contributor
timestamp: August 21, 2021, 05:10:15 pm
content: Hello I need a cheap analog multimeter on aliexpress or ebay.Do you have recommendation ?I need something analog to check polarity of coils, and guitar pickups. My digital meter is to slow to see if its a negative peak or positive peak first.Thank you.
Siglent SVX1015X bizarre trace, please help - Page 1
Forum section: electronics / testgear

author: airlomba
author_rank: Contributor
timestamp: August 20, 2021, 11:36:07 am
content: Hello all,I have a friend that owns a Siglent SVA1015X that present a bizarre behavior... Please, have a look at the picture below. The connection is a simple coax cable (50 Ohm), from PORT1 to PORT2. Then the TG function is activated and the result is as shown on the picture. The frequencies where the slopes appear are always the same. The difference in magnitude is about 4dB.I would appreciate very much any comment about what could be wrong with this equipment (or its operator).Thank you all for your time.Best regards,Emmanuel.

author: tautech
author_rank: Super Contributor
timestamp: August 21, 2021, 05:57:11 am
content: Yes I see similar with a new unit freshly updated with the latest V3.2.2.4.0R2 firmware.When the TG trace is Normalized any errors in flatness are removed.
Fluke and Tektronix Catalogs of the 1970s and 1980s - Page 1
Forum section: electronics / testgear

author: pjhenley
author_rank: Contributor
timestamp: March 28, 2020, 01:33:48 pm
content: Does anyone have access to old test equipment catalogs from Fluke and Tektronix? The Internet Archive has a limited collection. I think it'd be great to make these public online in some way. Manuals are easy to find. Catalogs, not so much.

author: David Hess
author_rank: Super Contributor
timestamp: March 28, 2020, 05:45:38 pm
content: TekWiki has most but not all of the old Tektronix catalogs:http://w140.com/tekwiki/wiki/Tektronix_Catalogs

author: pjhenley
author_rank: Contributor
timestamp: March 28, 2020, 10:22:36 pm
content: That is very helpful, David. Thank you! Now we just need a Fluke wiki.

author: View[+]Finder
author_rank: Unknown
timestamp: August 21, 2021, 12:49:26 am
content: http://bama.edebris.com/manuals/fluke/catalogs/A link to Fluke catalogs from the (free) Boat Anchor Manual Archieve BAMA
How much does AC constant current sine source cost? - Page 1
Forum section: electronics / testgear

author: Faringdon
author_rank: Super Contributor
timestamp: August 20, 2021, 01:15:21 pm
content: Hi,Does anyone know how much this sine source costs?AL-200-CR-H/Shttp://amp-line.com/products/ac-constant-current-sourcesWebsite doesnt say. Friend says quote requests are just followed with lots of questions, without a quote ever being given.
pick between Tektronix TDS1012 or hantek dso5102p - Page 1
Forum section: electronics / testgear

author: ErwinsCat
author_rank: Regular Contributor
timestamp: August 20, 2021, 08:52:15 am
content: I might be able to choose between Tektronix TDS1012 or hantek dso5102p.the hanteck is almost new the Tektronix is in used condition. good physical condition. the hanteck is 200 power up legit but do not know about Tektronix as they can be hacked to show zero (it showing around 200 anyway).they both come with 2 original probes and a power cable. I'm having a hard time deciding which one to pick.appreciate any insight and reasoning why you might have to choose one or another.thanksKa_who

author: wraper
author_rank: Unknown
timestamp: August 20, 2021, 09:05:55 am
content: Even though some people are ready to pay for TDS1012 as much as for a modern low end scope, IMHO It's not worth even $100. It's just an obsolete instrument which wasn't that good to begin with. Hantek often makes a reasonable hardware but software side usually sucks a lot. Dunno how good dso5102p is with latest firmware though.Quote200 what, MHz? Hacked to show zero what?At what price they are offered? Maybe none of them is worth it.

author: Andrew_Debbie
author_rank: Frequent Contributor
timestamp: August 20, 2021, 10:25:31 am
content: Quote from: wraper on August 20, 2021, 09:05:55 amPower Cycles. The scope keeps track of the number of times it has been powered on.

author: wraper
author_rank: Unknown
timestamp: August 20, 2021, 10:31:49 am
content: Quote from: Andrew_Debbie on August 20, 2021, 10:25:31 amThanks, It was written in the way that confused me.
Integration of Pulses on Rigol - Page 1
Forum section: electronics / testgear

author: calli
author_rank: Regular Contributor
timestamp: August 19, 2021, 11:53:16 am
content: Hi,I have a Rigol DS 1102 Z-e and wanted to integrate some pulse (in fact a light flash).I have a trigger, I get nice curves.Then I used MATH to switch on integration and after fiddling with the knobs I got a nice integration curve. However...Where does it tell me the area of that curve?While looking though the manual I also found the auto measure function which als gets an integration and tells the area (but is not that sophisticated and only uses the whole screen), but why is that not shown in the MATH part? What do I miss? I can also track or position the cursors, but no area under blue function curve?The image shows my try. The yellow Area is the auto-measure function.Cheers,carsten

author: calli
author_rank: Regular Contributor
timestamp: August 19, 2021, 02:06:41 pm
content: Wow thanks! Not sure if I had found that myself over timeAnd the Statistics! Sweet!Cheers,Carsten
Siglent SDS 1xx4X-E: How to ... - Page 1
Forum section: electronics / testgear

author: sibir
author_rank: Newbie
timestamp: April 09, 2020, 03:28:24 am
content: Being somewhat new here I hope not to violate any etiquette, but the "Siglent SDS1104X-E and SDS1204X-E Mixed Signal Oscilloscopes" thread is way too big. So maybe this can be a more narrow "How to ..." thread?My question: I took a sequence of 201 square pulses which turn out to vary in length, unexpectedly so. I was hoping to get the Mean and Std-Dev by measuring +Width and turning on Statistics.Strangely, Statistics only looks at the last of the 201 frames until I start manually flipping through the history with the Universal Knob. But I do have to do that very carefully and slowly otherwise it skips frames. Is that the only way? It seems there should be a better solution to get statistics on the history of frames, no?My FW is 6.1.35R2, but I had pretty much the same issue with 6.1.26

author: tautech
author_rank: Super Contributor
timestamp: April 09, 2020, 05:21:47 am
content: With any measurement you must give the DSO enough sample points to work with to give meaningful results.Generally the more waveform cycles you give it the better the results will be however there is a tradeoff in that give if too many and it will slow results some. Trial and error with the timebase setting will indicate a sweet setting for fast and accurate results.The waveform above looks just like a PWM as this one is from a Siglent STB-3.Neither of these are from a Stopped SDS1104X-E but are captured waveforms to USB on the fly.

author: sibir
author_rank: Newbie
timestamp: April 12, 2020, 04:03:29 pm
content: My hope was to get statistics on the finite number of traces I had captured in the sequence and not on some random traces.And since they are all saved it would be rather simple, no time constraints. And as I mentioned, I can even get what I need by slowly flipping through the traces.So at this point, I just would like to suggest a software improvement, namely that statistics is applied to the traces stored in a sequence if the acquisition has stopped.Not holding my breath though...

author: MathWizard
author_rank: Super Contributor
timestamp: August 21, 2021, 01:08:25 am
content: Ok I can't find the main page for this so.........How do I "save last settings" on the SDS1100/1200 models ? I suppose I could turn it off w/ the button, but.......Just now I had the mains power lines flickering, due to a storm, I never checked the weather, I just thought it was the power gird on the fritz. So despite the scope being on for a while, each time I lost my settings, and it just loaded the settings from the last proper power down procedure.

author: tautech
author_rank: Super Contributor
timestamp: August 21, 2021, 03:04:17 am
content: Quote from: MathWizard on August 21, 2021, 01:08:25 amSave/Recall>Save>Setup>Internal or External.Internal memory provides for 10 setups.^ No RTFM as this is just intuitive.....have a play.....Recalls in a second or 2 and just works !
Phase Angle Voltmeter - Page 1
Forum section: electronics / testgear

author: aw_rw1
author_rank: Contributor
timestamp: August 18, 2021, 08:54:35 pm
content: Does anyone know how a phase angle voltmeter works?I am suppose to read a voltage from one, but I am not sure what the voltage means. Is it the VRMS of signal or a combination of the signal and reference?Attached is a picture of a North Atlantic 321A.

author: 0culus
author_rank: Super Contributor
timestamp: August 19, 2021, 03:10:49 am
content: If it works like my HP vector voltmeter (probably very similar) you make phase measurements by establishing a known phase reference using the left hand input (marked "ref"...the accessories for mine include a coaxial short for this purpose) and making phase measurements of the signal of interest relative to that using the phasemeter scale. The magnitude is read off the voltmeter scale. In the case of the 8405A , it works on a 50 ohm system, so with some simple transformations, you can then plot points at different frequencies on a Smith chart. It was a poor man's VNA from a time when VNAs were basically nonexistent, and when they did show up (HP 8410 system being one of the earliest, iirc), they were beyond the budget of many labs. The 8405A, incidentally, also has an interesting feature with two 20 kHz outputs on the rear panel. These are essentially sampled versions of the RF signals on the inputs, with phase relationship preserved, so even a very narrowband oscilloscope could be used to look at signals up to 1GHz.:https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1966-05.pdf
Scienscope Vizor vs VE Mantis vs anythingelse - Page 1
Forum section: electronics / testgear

author: YetAnotherTechie
author_rank: Regular Contributor
timestamp: August 16, 2021, 09:46:03 pm
content: Hello,Has anyone tried the Scienscope Vizor eyepieceless microscopes?They seem to be an alternative(the only one???) to VisionEngineering Mantis, much cheaper, around 1500$Or, if you know ofanymanufacturer of similar eyepieceless microscopespleasemention them here.Presbyopia has arrived, i can't manage with binocular microscopes and +eyeglasses are destroying my vision.Thank you.

author: 4thDoctorWhoFan
author_rank: Regular Contributor
timestamp: August 17, 2021, 11:37:36 am
content: Some years ago, I got the original Mantis scope off the auction site for about $200 with a couple of lenses. I love it and use it all the time.Not sure what they are going for now but since they are obsolete you might find a good deal.Although, I had to try twice on the auction site as the first one I ordered arrived with all the mirrors inside the head unit in pieces. They need to be packed well.

author: Pinkus
author_rank: Frequent Contributor
timestamp: August 17, 2021, 10:10:02 pm
content: I do own a Mantis Vision and this Scienscope thing looks almost identical.https://www.scienscope.com/vizor-series-binocular-microscopes/Housing and stand are the same (just differing color). Just the mounted lens are looking different.They look so much identical, I would bet, they licensed from Vision Engineering the right to build the 'old' Mantis (Vision now does have newer ones, looking a bit more modern). Or they are purchasing these old Mantis from Vision and are just relabeling them.EditInteresting: it looks like the are allowing three lenses in the lens holder (not only two) and possibly these lenses does come with a higher working distance than the original Mantis lenses.Edit2:Yes, definitely a Mantis, but a bit modified: 3 lenses in the holder, dimmable LED lighting. See here:I like the holder with the three lenses - this makes me think about how to modify my Mantis (I am wondering why I never thought about this).
what File Format does Micsig TO1104 support ? - Page 1
Forum section: electronics / testgear

author: gurusonwheels
author_rank: Newbie
timestamp: April 15, 2019, 04:58:18 pm
content: what File Format does Micsig TO1104 support ?I have tried all kinds from other scopes .im trying to get some ref waveforms copied over to the TO1104but i can not find anything it can read .anyone know how to convert picoscope refs to use with this one ?driving me nuts ...

author: Micsig_support
author_rank: Regular Contributor
timestamp: April 16, 2020, 11:06:06 am
content: hello,Micsig scope support BIN, CSV, WAV formart.you can install PC software to read the waveforms. download it from Micsig website.

author: voltsandjolts
author_rank: Unknown
timestamp: August 17, 2021, 10:35:47 am
content: Hello Micsig,The user interface of dat2csv needs some improvement (see attached) but it does work; select input file and output file then it does the conversion of reference wave to csv.For me it crashes after four conversions (repeatable fault), so I need to restart the program.http://www.micsig.com/html/list_64.html
Fluke PM6306 LCR Meter: can not compute impedance from R and C - Page 1
Forum section: electronics / testgear

author: sjlukacs
author_rank: Newbie
timestamp: August 16, 2021, 09:11:45 pm
content: hello one and all,so i'm connecting a raspberry pi to a Fluke PM6306 LCR meter via GPIB. and i'm trying to do a very simple thing. i put a capacitor into the test clips, hit AUTO and the meter measures and displays capacitance in uF as the primary display and either the impedance or phase as the secondary display.ok, so in python i'm connected to the meter and setting the frequency and then grabbing the resistance, R, the capacitance, C, and the impedance, Z. i'm then using R and C to compute the impedance to see if the computed value matches the meter's impedance and it is not close at all. the code is:Xc = 1/(2*pi*f*C)impedance = sqrt(R**2 + Xc**2)where f is the frequency Hz, pi is 3.14159, and R and C are returned from the meter's interface. i believe these are the correct equations.i'm getting like:f: 3000.0, Z: 12.637, Zcomputed: 124.54949566680497, R: 123.9, C: 4.1763e-06where Z at 12.637 is no where near Zcomputed at 124.549.what am i missing here? thank you in advance, lucas

author: 2N3055
author_rank: Super Contributor
timestamp: August 16, 2021, 09:58:17 pm
content: You might look at the notions of serial and parallel equivalent circuits of impedance.Some quickly found texts on the topic. Chroma white paper is very good.https://assets.testequity.com/te1/Documents/pdf/series-parallel-impedance-parameters-an.pdfhttps://www.allaboutcircuits.com/textbook/alternating-current/chpt-5/series-parallel-r-l-and-c/http://www.freeclassnotesonline.com/Equivalent-Circuits-Lab.phpIn short, if you connect only capacitor, you will have complex impedance from predominantly reactance of capacitor, in series with small ESR of capacitor.You need to measure in serial mode.At 3 kHz, 4.1763uF will have 12,7-j Ohm and ESR in seriesshould be much less than 123,9 Ohm. Aluminum elco might have 10 Ohm ESR, ceramic or block capacitors fraction of the Ohm...You can verify all this with an oscilloscope and signal generator and a single resistor if you have the equipment..There are even applications for PC where you connect LCR to a simple circuit connected to audio card and can do measurement.I mention that only for educational purpose. You have Fluke PM6306 so use that. Of course, that is if Fluke PM6306 is fully operational and in the spec.If not, a sanity check might be in order, to verify whether it is operator or your instrument is not OK.Fluke PM6306 in good shape is top of the line instrument. Take time to learn to use it properly. It will be worth it.

author: sjlukacs
author_rank: Newbie
timestamp: August 17, 2021, 12:59:56 am
content: yes, that was it. putting the lcr meter in serial mode made all of the computations match and finally make sense. thank you so much for your help. lucas