hybridfree/eevblog-posts huggingface dataset:
Data format in Fluke View 2 software. - Page 1
Forum section: electronics / testgear

author: geggi1
author_rank: Frequent Contributor
timestamp: September 28, 2021, 04:33:39 pm
content: Is there anybody that is familiar with this software?I have done some measurements on a VFD and would like to use some vertical markers on the Y axes to get an idea about values above a certain voltage.My project is to troubleshoot a VFD that in the past has killed two motors. The motors are expensive and custom builds about 450kW at 690V 60Hz.My client is considering replacing the VFD because they are old (+20 years)Is there anybody that know some software that will accept a data export form the Fluke View2 software and that will give me more options for markers, math and filters?

author: bdunham7
author_rank: Super Contributor
timestamp: September 28, 2021, 04:55:16 pm
content: I have a few versions of Fluke View, but I've no idea what the '2' is. What test instrument are you using?

author: geggi1
author_rank: Frequent Contributor
timestamp: September 28, 2021, 05:13:53 pm
content: IM using the 190-504 II. I beleve this is the latest model

author: bdunham7
author_rank: Super Contributor
timestamp: September 28, 2021, 05:38:46 pm
content: OK, I see the '2' now. I'm not familiar with that version and haven't used that scope. But isn't the file from the scope simply stored in a .csv format that can be opened in Excel?

author: asis
author_rank: Frequent Contributor
timestamp: September 29, 2021, 08:36:56 am
content: Hi,Check out the screenshots.Fluke View2 lets you create reports using cursor measurements.The data block in the upper right is very informative.Also, it is possible to analyze the results made and saved by SW of an earlier version of Fluke View ver 4.4 (Scope Fluke199x).You will need to register your device on the website to receive a key to SW Fluke View2.
Tektronix TLA5204B boot error 3 long beeps - Page 1
Forum section: electronics / testgear

author: Zigortxu
author_rank: Contributor
timestamp: September 28, 2021, 06:33:42 pm
content: Hello,I have a tektronix TLA5204B, I have not used it in 2 years and now when I connect it, the instrument emits 3 long beeps but no appers nothing in the screen and only work the fans.It makes the 3 beeps as soon as I press the button, and the button is in red.Anybody know which is the problem? and how to solve it?I hope anybody could help me.Thanks very muchSorry for my englishZigor
Rigol DS2202A knob failure - Page 1
Forum section: electronics / testgear

author: v8dave
author_rank: Regular Contributor
timestamp: September 27, 2021, 05:23:31 am
content: Hi all,I have a DS2202A which has an issue with 3 of the adjustment knobs. The horizontal time base scale and position knobs and the intensity knob all have the same issue. All of the others are fine.When I rotate them, the count is random and jumps between up and down count making it impossible to set the time base and trigger center location. Same for the intensity knob when I try to use that for settings etc.I've dismantled the front panel PCB to check and couldn't anything obvious. The intensity knob is hardly used so wear and tear don't seem to fit the failure mode. It seems to be something that is common to both but the PCB only has 1 FPGA handling the controls and all the other knobs and buttons are fine.Anyone else had this before and found a fix for it before I decide to send it to Rigol for repair? It's out of the warranty period now.

author: TheDefpom
author_rank: Frequent Contributor
timestamp: September 27, 2021, 05:34:55 am
content: Just a complete guess, but it is possibly a power supply issue, could be noise on the rails.

author: Circlotron
author_rank: Super Contributor
timestamp: September 27, 2021, 06:57:49 am
content: Does the knob encoders have mechanical contacts or Hall effect sensors? I have a digitally tuned radio radio that has a pair of quadrature mechanical contacts on the tuning knob and the setting can be very jumpy, but if I rotate the knob a number of revolutions it comes good.

author: v8dave
author_rank: Regular Contributor
timestamp: September 28, 2021, 01:47:33 pm
content: Quote from: Circlotron on September 27, 2021, 06:57:49 amYes, these are the ones made by Alps. They are mechanical. I've used the very same units before in a design and they have been very reliable. This seems strange that only 3 of them are affected which sort of points to something being common but without a schematic or probing the PCB, not much I can do to diagnose it.Rigol has offered me a new PCB assembly to fit myself so I am going to order this tomorrow. The price is about the same as I would end up paying for 3 new encoders and only a chance it would fix the fault.

author: v8dave
author_rank: Regular Contributor
timestamp: September 28, 2021, 01:48:36 pm
content: Quote from: TheDefpom on September 27, 2021, 05:34:55 amNot really as the other knobs for the other controls are 100% fine.
Looking for small travel-friendly o-scope probes - Page 1
Forum section: electronics / testgear

author: Harrkev
author_rank: Contributor
timestamp: September 27, 2021, 03:42:31 pm
content: I would like a pair of SMALL oscilloscope probes. 100 MHz and under $30 USD. I have tried searching for this, but all probes seem to be roughly the same size. What I would ideally like is the total probe length (including witch's hat and strain relief) to be 5 inches (13 cm) or less, and thinner cables would be nice too. Does anybody even know if such a thing exists?Thanks in advance.

author: tooki
author_rank: Super Contributor
timestamp: September 27, 2021, 04:41:33 pm
content: Well, if it’s any help, on the Testec passive probes, the cable is actually removable — it connects via a push-fit BNC connector completely hidden within the strain relief. I have no idea how many insertion cycles they can handle. (Testec doesn’t advertise replacement cables as spare parts or even mention the removability anywhere, so it’s clearly not intended to be a user feature.)
DYI Analog Voltmeter  - Page 1
Forum section: electronics / testgear

author: richmit
author_rank: Contributor
timestamp: September 25, 2021, 07:43:18 pm
content: A friend of mine has an old Yokogawa voltmeter on his bench. No power switch. No batteries. No ranges. Just pick up the probes and measure. That's pretty handy, and it got me thinking about an old Simpson 15-0-15 microamp meter I have on the shelf. In the distant past I put it to good use for low noise measurements, low impedance voltage measurement, and the occasional bridge. I still occasionally use it, but it would be perfect for building myself a lowish Z voltmeter.I still wanted to be able to use the meter directly -- that's what the white post is for. I also frequently use the meter with a 10K, 10-turn pot in series -- that left most red post isn't a post at all, it is the knob for a long life pot. Using the center red post one gets the meter in series with that pot. Finally the top and bottom posts are the voltmeter ranges: -25 to 25V at 1 Mohm and -1 to 5V at 200 Kohm.Anyhow, I it turned out well. It's very functional. Super easy to read -- it has a fat, high visibility needle. I have it mounted on a swing arm on the right side of my bench by my DMMs. Kinda adds some nice steampunkeyness (sp?) to the bench.

author: bdunham7
author_rank: Super Contributor
timestamp: September 25, 2021, 08:34:47 pm
content: Do you know what the resistance of the meter movement is and if it is diode-protected? If not, you might save yourself some heartache if you added diodes and maybe some series resistance so that the total meter resistance was at least 10k-ohms.

author: richmit
author_rank: Contributor
timestamp: September 25, 2021, 08:45:26 pm
content: Quote from: bdunham7 on September 25, 2021, 08:34:47 pmThe meter is 1822 ohms, and isnotinternally diode protected. I had to add my own. I also put in a fuse. I doubt I'll ever trip it with the stuff I work on, but I figured better safe than sorry.

author: tautech
author_rank: Super Contributor
timestamp: September 25, 2021, 08:51:51 pm
content: Nice scope richmit.What probes have your paired with it ?

author: richmit
author_rank: Contributor
timestamp: September 25, 2021, 09:02:20 pm
content: Quote from: tautech on September 25, 2021, 08:51:51 pmWhen I got the scope I had hoped to use my Cal Test CT3290RA (a clone of the Tek P6139A), but my scope's input capacitance is on the high end and those probes wouldn't compensate!!So I have two sets of probes. The ones in the photo are the ones I use everyday -- 300MHz probemaster 4900s. When I need more bandwidth I use Keysight N2873A -- nice probes, but the longer, stiff cables make them annoying on a small bench -- accessories are also stupid expensive for them.

author: tautech
author_rank: Super Contributor
timestamp: September 25, 2021, 09:32:45 pm
content: Quote from: richmit on September 25, 2021, 09:02:20 pmOK thanks.Got some of these 350 MHz 10x sense probes to characterize as they are very well priced:http://www.pintek.com.tw/product_detail/landersound/index.php?Product_SN=26541&Company_SN=6002&Product_Site_Classify_SN=17073
Prism Instruments PPS50DT - Page 1
Forum section: electronics / testgear

author: david.saliba
author_rank: Newbie
timestamp: February 01, 2021, 08:03:30 pm
content: Hi,I am new to the forum so be gentleI have bought an amazing old Power supply ( well amazing for the price vs performance) called PPS 50 DT by a company named PRISM instruments. This seems to be an old product from a company that moved business a bit.I found nothing on their site about equipment.Does anybody know about these devices and has a manual (esp for the gpib).Thanks for your time reading appreciate it.

author: andymcc
author_rank: Newbie
timestamp: April 08, 2021, 04:04:43 pm
content: Hi David, did you find a manual ? I also need one for a similar unit I just acquired (Model 5042). It seems they were originally sold under the brand of 'Prism Electronics' of Cambridge, but this changed to 'Prism Instruments', and the model numbers were changed. Another company, Tinsley Instruments, may also have been involved. I've spoken to folk at both companies, but due to the age of the units, they were unable to find any documents or assist with other info. I've uploaded some pics from the sales leaflet to this post, this has a sticker on it showing Tinsleys address which they moved to in 1991, so the units were presumably still being sold in the early to mid 1990's. There's some info on the IEEE488 support on the leaflet. I will continue to try and find further info and post up here if I find anything.Andy McC, GB

author: david.saliba
author_rank: Newbie
timestamp: September 26, 2021, 05:51:10 am
content: Still Looking.. But thanks a lot for the details.I actually managed to get in touch with the guys but .. surprise they have no docs or info left.I mean seriously how hard is it to keep a manual for posterity.. a pdf .. somethingAnyways if I find one i will share ofcourse..d.

author: david.saliba
author_rank: Newbie
timestamp: September 26, 2021, 05:54:42 am
content: Also the leaflet you sent is very useful .. I will have a look once i get the IEEE488 interface and learn how to use it..Thanks again.
MHS 5200P Signal Generator - Page 1
Forum section: electronics / testgear

author: gico750
author_rank: Contributor
timestamp: August 23, 2021, 07:23:57 am
content: Hi everyone, for some time I have this signal generator, 25Mhz two channels, it is working, with a USB connection to the PC and related software.On the rear panel it has, among other things, the outputs of channels CH1 and CH2 "power out" but connecting the oscilloscope probe I can't find any signal, do you have any information about it? maybe something wrong? In any case I can't understand what this output is for and if it probably doesn't work. I tested the front output ch1 and ch2, they run perfectlyIn the manual it indicates it as a connector on the rear panel but does not specify anything else.In the photo (internally) you can see on the left the voltage regulator board with a lot of cooling ...I thank in advance whoever wanted to help me understand.

author: gico750
author_rank: Contributor
timestamp: August 23, 2021, 07:29:08 am
content: I would like to upgrade with THS3092 chips, then improve output signal.I have another question, when I connect a small loudspeaker to the normal front output, the signal distorts a lot perhaps due to the absorption of the speaker.That's why I would like to understand how to use the rear outputs which should be power.

author: gico750
author_rank: Contributor
timestamp: September 27, 2021, 11:36:41 am
content: yestarday the chip was arrived, i replace they but the signal is bad a so i install the original.... unfortunately the waveform worsens at the same frequency and amplitude so I'm back with the original chips.
seek help  RIGOL ds6104 flash chip data  - Page 1
Forum section: electronics / testgear

author: gao415517
author_rank: Newbie
timestamp: September 25, 2021, 03:12:58 pm
content: My RIGOL ds6104 flash chip data is lostAsk someone who can share the firmware read out by the editor or 32 megabyte memory dump fileEmail: gao40555315@163.com.
Please show the purpose of D5 and D6 - Page 1
Forum section: electronics / testgear

author: abdulbadii
author_rank: Frequent Contributor
timestamp: September 30, 2021, 10:35:47 pm
content: Would anyone please help out explain or show what is the purpose of D5 and D6 in circuit:

author: TurboTom
author_rank: Super Contributor
timestamp: September 30, 2021, 11:25:14 pm
content: These are the voltage doubler / rectifier diodes for the moving-coil instrument (R22).Btw, you could have asked this question in yourother topicas well, this would have helped to keep the "noise" in this huge section of the forum a little lower...Cheers,Thomas

author: David Hess
author_rank: Super Contributor
timestamp: October 02, 2021, 07:14:12 pm
content: The diodes are half-wave rectifying the AC signal to the DC meter. The meter could also have been put inside a bridge rectifier but that would double the voltage drop from the diodes.
Textronix TDS724A firmware update - Page 1
Forum section: electronics / testgear

author: DC1MC
author_rank: Super Contributor
timestamp: September 23, 2021, 06:35:40 pm
content: Hello everybody,it seems that after almost 10yrs in my possession I've finally got a ceramic section for the AUX2 channel that was broken on TDS724A and prevented SPC to ever complete.The Chinese >:Dbayer that had one for sale all this time, didn't sold it but it only slightly increased the price, this is real commitment.Anyways, I've got a "for parts" TDS520A and I hope the seller didn't totaled ALL the attenuators and left one for me.All the other parts, buttons and stuff will be up for grabbing later if someone is interested !!!But now that I will reopen it and re-calibrate I wish to also do the sample memory and bandwidth upscale and I was wondering if someone has a firmware newer than the 4.1 that I have and is willing to share.If so, please let me know.Cheers,DC1MC

author: HighPrecision
author_rank: Unknown
timestamp: September 24, 2021, 03:18:54 pm
content: Hi again,today I've successful upgraded the firmware of my very old TDS744A, with old flash chips (28F020), I was in the same boat as you wondering if the CPU board is compatible with new firmware... a big jump from v1.0.1e to v4.2.1e. Also the SPC calibration procedure passed OK.Now I have two cosmetic parts that I want to replace, if available from your parts unit, the rear plastic panel, my panel is broken in one corner at top side. The second part are the rubber buttons on right side of display (soft-keys), on my unit one button is missing on the external part.For your doubt on firmware I think you can try to install the 4.2.1e, 'tektool' software can backup the original firmware, also the NVRAM content, in case of incompatibility it's possible to reflash from backup and fully restore the unit. There are internal jumpers to define the instrument model.Best, Stephano

author: DC1MC
author_rank: Super Contributor
timestamp: September 24, 2021, 05:22:21 pm
content: Quote from: HighPrecision on September 24, 2021, 03:18:54 pmThanks for the answer, after fiddling with my units I've decided to sell them both for what I thing is an acceptable price (not really just parts, but also not in that condition), see the TEA thread.Cheers,DC1MC
Hantek IDSO 1070A software installation - Page 1
Forum section: electronics / testgear

author: phred01
author_rank: Contributor
timestamp: September 24, 2021, 03:41:22 am
content: Just to help anyone installing the software on Win7Straight out of the box put the cd in to the PC DVD drive there were not errors during installation. Using the WiFi it was plug & play dream. Very smooth & slick connection via the PC or Android. Downloaded from APKpure the IDS01070A app Easy install on a Android 6 tablet ..... connection was easy..... great for a novice! So just to checkout USB Windows 7 side. Did the Black plug to the USB port and the Red plug to an external power source. PC flashed up driver not found. Device manager showed a yellow triangle against IDSO1070A.Created an account with Hantek registered my unit then downloaded software package. This will need to be unzipped. There are 2 folders Android & Windows. Click on Windows folder then driver subdirectory. There are 2 drivers available 32 bit & 64 bit. Select the appropriate driver for your OS. After installation heard a click coming from IDSO1070A and the software found the scope It appears The ST driver was not part of the installation disc BTW the Android app from APKpure is the newer one
Standby Power 3478A & Tektronix 2431L - Page 1
Forum section: electronics / testgear

author: PixieDust
author_rank: Frequent Contributor
timestamp: September 24, 2021, 03:00:20 pm
content: Anyone know approximate figures for how much these units consume while off? I don't have a way to test this unfortunately.

author: AVGresponding
author_rank: Super Contributor
timestamp: September 24, 2021, 03:16:01 pm
content: Can't speak to the Tek as I don't own one, but the 3478A uses approximately nothing; it has a hard power button.In any case it only uses around 9W when on, with a 0.63 power factor.

author: PixieDust
author_rank: Frequent Contributor
timestamp: September 25, 2021, 03:26:23 am
content: Thanks AVGresponding.As for the oscilloscope, any similar models would do. I would imagine all of the scopes of that vintage would consume similar amounts when off.

author: bdunham7
author_rank: Super Contributor
timestamp: September 25, 2021, 03:42:27 am
content: If you look at the wiring diagram for any of those scopes, you'll see that the power switch interrupts both sides of the line input and typically there is only a high impedance shunt (470k on the 2432 diagram) inside the power inlet. So at 220V, you'd have about 450uA and 100mW of power consumption. AFAIK, that's it.

author: PixieDust
author_rank: Frequent Contributor
timestamp: September 25, 2021, 07:04:44 am
content: Thanks bdunham7!

author: Per Hansson
author_rank: Unknown
timestamp: September 25, 2021, 08:28:11 am
content: Well, except when you have Rifa caps in the IEC inlet filter: then it can go up to around 10Amps, once.
Do you know the screen model of rigol ds1054z? My screen is broken. Thank you - Page 1
Forum section: electronics / testgear

author: jack-c
author_rank: Contributor
timestamp: September 22, 2021, 11:41:00 am
content: Thank you

author: marcus h
author_rank: Contributor
timestamp: September 22, 2021, 09:51:57 pm
content: Google "rigol ds1054z replacement lcd screen part number"I've seen replacement LCDs on AliExpress, for example, butcan'tsay anything about the quality:https://www.aliexpress.com/item/1005002616147615.htmlhttps://www.aliexpress.com/item/1005002766366177.htmlHope this helps!

author: coromonadalix
author_rank: Super Contributor
timestamp: September 23, 2021, 01:56:04 am
content: Since on the second link you have the Innolux part number try to search on other sites ..... maybe you could find one less pricey ??

author: james_s
author_rank: Super Contributor
timestamp: September 23, 2021, 02:02:21 am
content: You might want to open up the scope and look at the part number on the original display you have too. There is a possibility there may be multiple hardware revisions and it is not guaranteed they all use the same display.

author: jack-c
author_rank: Contributor
timestamp: September 24, 2021, 02:57:39 am
content: I know the model is tm070rdh11
GenComm GC7105B (base station analyzer) stuck on boot - Page 1
Forum section: electronics / testgear

author: Event0
author_rank: Newbie
timestamp: September 23, 2021, 09:07:02 pm
content: Hi everyone,I have recently acquired a GenComm (the company that became JDSU and now VIAVI) GC7105B base station analyzer for my ham radio uses.The problem is... that it's broken (bought on ebay for 150€), in particular when i turn it on, after the first boot screen, a second boot screen appears and then the analyzer get stuck, i think it might be a "software" related issue. i tried booting it just with the main board (and the front panel) but the problem remains, on the sd card inside there are just a few files.I couldn't find anything about this product online , no firmware or recovery files, not even a tread about my problem...I have also tried using JDView and it seems to connect and download data from the Analyzer just fine.Anyone who has this Analyzer is willing to exchange some info, maybe a way to acquire a new firmware?
Keysight 34461A Application Error Dialog Covers Screen - Page 1
Forum section: electronics / testgear

author: ralphrmartin
author_rank: Frequent Contributor
timestamp: October 26, 2020, 07:01:03 pm
content: I have a standard Keysight 34461a with (latest 3.02) firmware, which after it has been running for a few minutes, pops up a dialog error sayingApplication Error Application AGILENTLXIWEBSERVICE.EXE encountered a serious error and must shut down.This is extremely tedious as it covers the main display, and I can see no way of dismissing this dialog - so I have to reboot the device.Weirdly, it only seems to happen if I also have some Rigol equipment on the same network, and indeed, I wish to use that equipment at the same time (I'm trying to calibrate it with the 34461a).Does any one have any insight as to how to stop this happening? A firmware reload did not help. Thanks.

author: mightyohm
author_rank: Regular Contributor
timestamp: September 22, 2021, 11:58:44 pm
content: Did you ever find a solution for this? I have a 34465A with the latest firmware (3.03) that is doing this as well.
Keysight Parts cannot be ordered? - Page 1
Forum section: electronics / testgear

author: MarginallyStable
author_rank: Regular Contributor
timestamp: September 22, 2021, 07:27:58 pm
content: I'm trying to order a replacement stand (U1241-64701) for my meter from this pagehttps://www.keysight.com/my/viewPart/U1242BI press the "add to cart" button, but it seems to add it to my "shopping list" instead. I can open up the shopping list and the checkout button is greyed out (I am logging in). When I check the actual shopping cart button at the top right of the page, it says it is empty.Anyone had any luck ordering from this system?

author: LaurentR
author_rank: Frequent Contributor
timestamp: September 22, 2021, 08:42:46 pm
content: Ordered recently with no issue, but I can't anymore.Even if you're logged in, you get the "To order online in Parts Online Store / Register" message and the "Register" text is actually a link to a store-specific registration page I had never seen:https://support.keysight.com/KeysightdCX/s/user-registration?language=en_US&appId=pos(haven't tried to register)

author: DaJMasta
author_rank: Super Contributor
timestamp: September 22, 2021, 09:43:45 pm
content: They have been really mucking with their US site, at least, for a few months. Has been sort of garbage for ordering in my experience as well. It took some additional effort, but their phone sales reps are helpful, so even if your part or the unit it fits don't show up in searches (happened), if you add an address to your account but aren't allowed to click the checkout button (happened), if you use a special form to request an address change and never get a reply/verification (happened), or even if you just login and after being redirected several times you end up in a place that won't let you buy anything (happened), the phone ordering is likely still workable.I had a little trouble when I ordered a few months ago and there was some confusion as to whether or not I needed to be part of a company to purchase from them (ultimately they shipped to me without my company name, but in the wake of the UK Keysight stuff, who knows), and when they send you a sales order email it will have a whole list of questions that they're not expecting to be answered and that in many cases don't apply to the order, but it can be done.

author: J-R
author_rank: Super Contributor
timestamp: September 22, 2021, 11:58:09 pm
content: Recently I dealt with them for a warranty renewal. It's true their website is sort of in limbo at the moment and completing the purchase was a bit convoluted. They stated it probably wouldn't be fixed until sometime in 2022. I'm guessing the project fell off the rails or something...But regardless, they were generally very easy to reach via e-mail and phone:https://www.keysight.com/us/en/contact.htmlIn my case I e-mailed them to get the quote, then had to call in to pay with a credit card. While they do ask for a company name, they don't require a business license (which I do have) or any other type of proof. So there's no reason you couldn't just make up a company name...
NI GPIB-PCI adapter to work with old Agilent or other third party software? - Page 1
Forum section: electronics / testgear

author: pizzigri
author_rank: Regular Contributor
timestamp: September 19, 2021, 08:50:01 am
content: Hi!I tried looking for this on the forum but could not find a conclusive answer.I have a GPIB-PCI adapter from NI that I want to install in my Win10 lab PC.I want to use older free Agilent software such as Intuilink Counter for my 53131A, DMMutility etc, and also also other freeware SW that is NOT LABView or Benchvue.Problem is also the HUGE package that NI wants to install in my PC - over 1.2 GB of compressed bloatware??? WTF? I only need a device driver to connect to my GPIB devices (currently five, ranging from an old HP5385A to an Agilent E3631).Is there a smaller footprint NI driver install that i can use, or a previous stable driver etc that does not dump GB of crap on my small 128GB SSD?I am new to this PC control thing.Did I do the right thing to buy the (used) GPIB adapter or I should do something different?I'm quite frustrated....Also, the 34410A uses a USB connection, and I don't know if it will interfere with a GPIB connected 34401A in the same app (Agilent DMM Utility).All my best!Franco

author: lastguy
author_rank: Contributor
timestamp: September 20, 2021, 09:35:07 pm
content: I don't think your PC has PCI slot? No wit is PCIe.I used to use USB-RS232 to control Agilent power supply, not very reliable due to USB protocol - per keysight says.You can buy USB-GPIB adapter, even shipped from China. But NS might block its (legal) old h/w version and you might need old driver.

author: alm
author_rank: Super Contributor
timestamp: September 21, 2021, 06:55:09 am
content: The interface between most software and GPIB hardware has been standard for probably two decades (Gpib32 and VISA), so software like IntuiLink should work fine provided you have the right NI-488.2 version installed.The caveat with older interfaces like this is the interface needs to work in your computer (the already mentioned PCI slot), the NI 488.2 software version needs to support the interface (might well need an older version, check the readme), and the NI 488.2 software needs to support your OS.I'm not aware of a smaller driver package than NI 488.2. You might need NI or Agilent VISA for IntuiLink, I don't remember.

author: pizzigri
author_rank: Regular Contributor
timestamp: September 25, 2021, 07:10:37 am
content: Thank you for your replies!The PC I’m using has a single PCI slot and I have already installed the NI card inside the case. I find it under devices in Windows 10 system, and was about to install the drivers when I realized NI wanted me to download and install 770 mb of stuff for version 17.6 of 488.2. Which is crazy. Hence, my request here.Version 21, the latest, wants over 1.2 gb of disk space.... so I looked at earlier versions, but it does not go older than 17.6.maybe there’s a way to erase parts of the installation once done to leave only the actual driver?
HP 5316B External Ref Frequency - Page 1
Forum section: electronics / testgear

author: TaylorD93
author_rank: Regular Contributor
timestamp: September 21, 2021, 06:48:18 pm
content: Hi All,I have a HP 5316B Universal Counter, I am looking at connecting a 10MHz GPSDO, which has a quoted output of 1VRMS.The HP 5316B Service manual available direct from the Keysight website, says that the input reference can be 1, 5 or 10MHz at 1.0VRMS, but the User Manual for this instrument states only 500mVRMS input (at the same frequencies)Admittedly the Input circuit has a 464 Ohm series resistor and a 10nF Capacitor, which is then protected with two 1N4150 switching diodes to "limit" the peak amplitude to approx 0.6V and has 1kOhm resistor to deck (when in the External ref switch position) which will divide it down a little.So i wondered, does anyone here use the 5316B (Or 5328A) Universal counters and what amplitude reference have they connected to the Ref Input?Given the circuit,i suspect that it will be finewith the 1VRMS sine wave, and perhaps the User Manual should say a Minimum of 500mV?Thanks,Taylor

author: bdunham7
author_rank: Super Contributor
timestamp: September 21, 2021, 07:55:40 pm
content: Mine works fine at 1VRMS
HP-8591E - Page 1
Forum section: electronics / testgear

author: Eyecue
author_rank: Contributor
timestamp: September 20, 2021, 12:25:49 am
content: RBW amp fail at 1 Khz. I made the crystal shorts and went through calibration but the filter wont adjust out like the image shows in the service manual. i.e. there is a sharp peak and not a smooth butterworth type of curve. Any suggestions? I am wondering about a bad PIN diode. I ran a NANOVNA on the crystals and can see them at 21.4 MHz but now the unit is saying that there is too much noise in the bandwidth and I am now getting RBW amp fail.
HP-3577A  SN2535xxxx - Page 1
Forum section: electronics / testgear

author: avvidclif
author_rank: Regular Contributor
timestamp: September 19, 2021, 01:08:14 am
content: Recently purchased this set with a known display problem (none) Working otherwise. Digging into to it when the 1345 HV board is plugged in it overloads the 15v supply and basically causes the machine to shut down (protection circuit). Since the -2450v supply is not there and it uses a voltage doubler circuit I'm fairly certain the caps in it are bad. I've seen this type of problem before on other gear. I have the caps on order. Any other thoughts as I wait on parts?Also I have the S-Par test set. I have the feet to tie the 2 together but can't figure out what screw size is used. This was when they transitioned from US to Metric. I tried a 6-40 but too big. Someone said the smaller metric version was 4-7 but it doesn't work either. I have both tap and dies sets but nothing seems to be right. I ordered some 3mm screws and going to try them. Anybody goat a clue what the two sizes were, both Imp and Metric. Buying a few screws at a time isn't bad but shipping is killing me. I would just as soon not keep experimenting.
Tektronix P5205A - Mod to use non tek supply - Page 1
Forum section: electronics / testgear

author: rvalente
author_rank: Frequent Contributor
timestamp: September 20, 2021, 01:08:43 pm
content: Hello Mates,i've came across a bargain P5205A but I do not own a 1103 tekProbe nor wanna buy one. Can I mod the P5205A to use an external power supply (or batteries?)Greetings, Renan
Sencore ST-65/66 manual - Page 1
Forum section: electronics / testgear

author: rjonst
author_rank: Newbie
timestamp: September 16, 2021, 08:57:32 pm
content: Hello,First time on this forum. I am a fairly amateur tech on 70-80 stereos, beginning about 2 years ago. Actually renovating/repairing my first stereo (Sansui 881) was quite a treat. It took a few months of constant attention and (home) work and it was a surprise to me, that it did work out. The next step was to refine the Stereo signal and then adjust the multiplexer, but I did not have the equipment or the access to anyone who could do this. I spent a few months looking for and finding some of the required equipment to do this and other things. However, have found that much of the equipment you find around these days needs to be repaired before you can use it. So, many pieces bought and lessons learned over the past 8-10 months.Not to bore anyone with all this, but I was looking for a Sencore -165 for quite a while. This instrument seemed to be the go-to device for my purpose and the few attempts of acquiring one were snatched out of my reach by more knowledgeable individuals.I recently scored a Sencore T-65, which for all necessary purposes can do some of what is needed but there is no manual. There was nothing on BAMA either. So my opening here is to ask if there is any known source for the schematic for the ST-65/66 // Many thanks for any helpRJ

author: tautech
author_rank: Super Contributor
timestamp: September 17, 2021, 07:24:02 am
content: Welcome to the forum.Why not contact Sencore and ask them for a manual:https://www.sencore.com/product-category/all-products/sencore/
Teledyne/Lecroy (Siglent SDS1204X-E) T3DSO1204 firmware update, help! - Page 1
Forum section: electronics / testgear

author: ninevoltz
author_rank: Newbie
timestamp: September 16, 2021, 07:09:16 pm
content: I just got a T3DSO1204 and cannot figure out how to update to the latest firmware. I was able to update with the .ADS file from an older update, but the newer update with four files (rootfs.cramfs) does nothing when I copy it onto my USB stick. What am I missing? Also, when I plug it into my Windows machine with the USB cable there is no device driver loading. I have EasyScope installed, but Windows device manager tells me there is no driver loaded.

author: tautech
author_rank: Super Contributor
timestamp: September 16, 2021, 07:47:50 pm
content: Quote from: ninevoltz on September 16, 2021, 07:09:16 pmWelcome to the forum.In the latest FW package there are 2 parts; an OS update and the firmware update.The order in which they are installed is not important.It is all done from a USB stick.See this post and those before and after for info on how best to do it and what to see on the scope (Sys Info) after the updates.https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg3655267/#msg3655267
Looking to part with my analog oscilloscope  - Page 1
Forum section: electronics / testgear

author: DaveAgain
author_rank: Newbie
timestamp: September 15, 2021, 06:45:03 am
content: Hi All,just looking for some room on my bench.....it's a bwd 539c both channels work well.....free to a student or someone poor which is most of us pick up boronia

author: tautech
author_rank: Super Contributor
timestamp: September 15, 2021, 09:08:01 am
content: Welcome to the forum.Member wolfy007 collects BWD stuff so you might like to send him a PM.His profile only indicates he's in NSW so where that fits with you near Melbourne IDK.

author: DaveAgain
author_rank: Newbie
timestamp: September 16, 2021, 06:42:51 am
content: Thanks for the reply but it looks like he is another state 10 hours away and because I am giving it away I'll Keep it advertised a 20mhz analog oscilloscope Bertha has been a reliable and hardy scope but I just don't need two..... I am sad to see her go but go she must

author: wolfy007
author_rank: Frequent Contributor
timestamp: September 16, 2021, 11:33:31 am
content: Hopefully she goes to a good home.Should you not find someone to pick it up, and you still feel the need to let it go, send me a PM and maybe we can arrange something.
How about micsig AC/DC current probe? Anyone tried ever? - Page 1
Forum section: electronics / testgear

author: jacklee
author_rank: Regular Contributor
timestamp: June 25, 2021, 09:49:46 am
content: I want have a AC/DC current probe long ago, however the price sometimes even more expensive than oscilloscope always stopped me....From this videohttps://youtu.be/jiRtoyBD1FYit makes me hesitated again. Current probe should be useful, while it could see more than multimeter. So if there's any one had bought this probe?

author: Fungus
author_rank: Super Contributor
timestamp: June 25, 2021, 12:22:25 pm
content: There's been several threads on here:eg.https://www.eevblog.com/forum/testgear/micsig-cp2100b-current-probe/https://www.eevblog.com/forum/testgear/micsig-current-probe-cp2100b-tests-and-comparing/Overall they seem very good value for money.

author: jacklee
author_rank: Regular Contributor
timestamp: June 28, 2021, 07:58:03 am
content: thank you very much, it helped a lot

author: scoper007
author_rank: Contributor
timestamp: June 28, 2021, 09:41:40 am
content: Have one, highly recommended!

author: Micsig_support
author_rank: Regular Contributor
timestamp: September 16, 2021, 10:24:12 am
content: see this link.
Siglent SDS2000X Plus - slightly more expensive alternatives? - Page 1
Forum section: electronics / testgear

author: cheater
author_rank: Regular Contributor
timestamp: December 06, 2020, 04:25:37 pm
content: Hi all,I'm looking for a new scope in the budget range. I need something relatively cheap to work on analog projects and on slower digital projects (8-bit micro boards, vintage electronics, digital sections of CRT tvs, home automation, ...). I've first thought that the Rigol MSO5000 series was a good idea at 900 Euro, but looking at reviews it's very noisy and it has a super sluggish UI, which will be annoying to me. I've seen a really nice comparison of the Rigol MSO5000 with the Siglent SDS2000X Plus *, and that seems to fare much better in the usability and noise dept, and you can hack it up to 500 MHz instead of 350 MHz for the Rigol. The price hike to 1200 Euro isn't that much for me to be honest. So I was wondering if for a little bit more I could get something nicer still? Both the Rigol and the Siglent are hackable, so for my uses at this point I'm basically comparing the highest spec model at the entry level price. The 500 MHz bandwidth is okay, but if you tell me for a little bit more I can get 750 MHz, or better decoding, or a stronger CPU for running more maths functions / better fft, or for runningscopehal / glscopeclient(which would be really great to be able to do that), then I would be super happy. I think the weak CPU on both scopes is what really kills it for me, but the fact the Siglent is less noisy is just so much better for me.I don't really care that much about included probes.4 channels, 350 MHz or more, and the ability to do nice FFT and bode plots is a must for me. It would be nice if either scope could reach say 12 or even 14 bits FFT by use of long-term averaging, but I only need that up to ~100 MHz, and I really need that down to DC.I don't know one thing. Does either of those scopes have curve tracing capability?Neither scope allows a sonogram ** - basically an FFT display where the vertical axis is frequency and horizontal axis is time, like you see eg in audio players or in HAM radio software. That would be super useful for the work I do, too.* Here's the comparison video btw.** Here's a sonogram

author: MathWizard
author_rank: Super Contributor
timestamp: September 16, 2021, 08:01:20 am
content: So where are all the side by side reviews of all these scopes, aren't there professional tech reporters for the industry, like there is for the PC industry ?? Actually the PC reviews need a lot more EE's to do the reviewing, of the actual electronics.So how does the SDS2000X+ compare to the big brands like KS and Tek that have similar main spec's like BW, but probably cost closer to $2k than $1k (for the 2104X+) ??I don't need a better scope than my hacked 1104x-e, but with videocard prices gone wild, I can justify a faster and more accurate scope.
Fluke 8040A DMM Restoration/Repair - Page 1
Forum section: electronics / testgear

author: atkelar
author_rank: Contributor
timestamp: September 16, 2021, 12:03:12 am
content: I had another piece of test equipment on my desk - a 1983 vintage DMM, Fluke 8040A. It arrived with some issues from an ebay sale and I'm quite happy to have it back in working order. A little shout out to Dave in the video, because... it was just too good a chance not to- because I had to redo that flatflex connection and also changed cleaned and replaced some parts, I did re-calibrate it to the best of my abilities; which might leave some absolute accuracy to be desired, but at least it adds up to the cheapar DMM that I have factory calibrated, so at least the ballpark numbers are in range. Any ideas on how to do "low cost" voltage standards in the higher range? I found some reference chips for 10V DC but this thing's calibration manual calls for "750V AC, 10kHz" for reference(and yes, I am weird, but the presentation format is fun IMHO)
OpenTAP: An Open Source Project for Test Automation - Page 1
Forum section: electronics / testgear

author: Jurkstas
author_rank: Newbie
timestamp: September 14, 2021, 08:09:36 pm
content: Hi all,has anyone here tried the OpenTAP (https://opentap.io/) yet?

author: alm
author_rank: Super Contributor
timestamp: September 15, 2021, 06:05:38 am
content: No, I haven't, have you?From their website, it looks somewhat interesting to me, but the fact that it only supports some Keysight instruments severely limits the usability for me. I imagine they're hoping for external contributors to develop those, but that might turn out a chicken and egg problem: the product needs users for people to be motivated to develop instrument drivers, yet it needs drivers to get users unless you run a pure Keysight lab.I don't know if there's a generic VISA driver that can send raw SCPI commands.

author: Jurkstas
author_rank: Newbie
timestamp: September 15, 2021, 07:22:16 pm
content: Not yet, just reading their docs so far. Trying to understand what it is. It seems to have very little attention on Internet, not sure why. I've been passively looking for some platform/framework to formalize my experiments a bit. I am wondering if this could be a good platform for home lab automated experiments or small scale functional testing. The stuff I use professionally is not usable at home due to licensing. Some Keysight's plugins seem to be free for personal and up to 3 user non-enterprise use. From Results Viewer CE EULA:Quote

author: LaurentR
author_rank: Frequent Contributor
timestamp: September 16, 2021, 12:00:48 am
content: If you want to hack something at home, just install the Keysight or NI Visa stack and use that as an interface to send SCPI commands. It does USBTMC, IP, Serial, GPIB and many others and it's free.Most instruments come with a thorough SCPI documentation.There is a bit of work to write the sequences for each instrument but it's honestly not hard and you want to get to know your instrument anyway. There are plenty of examples of such code on Eevblog using PyVisa (Visa library for Python) or Matlab depending on your preference.
I need help finding out if this Hitachi DSO is good or not - Page 1
Forum section: electronics / testgear

author: Farrow
author_rank: Contributor
timestamp: September 14, 2021, 11:47:51 pm
content: Hello guys, I'm looking for an oscilloscope to add to my workbench. I don't know much about scopes and have never really looked for one because in my country they are rare and the ones available for sale are stupid expensive. Because I'm on a budget, I was exclusively looking for analog scopes but then I came across this Hitachi VC-6545 dso scope. This thing doesn't have any real information on the internet, some basic specs, a few blurry pictures and lots of eBay listings.I mainly work with micros, motors and power electronics. I want a scope to help me understand circuits better and make debugging easier. Now let's make one thing clear, I'm not except and to be honest, I don't even understand what I want, so your guy's help will be very much appreciated.I found its service manual if that helps:http://ftb.ko4bb.com/manuals/180.149.218.84/Hitachi_VC-6025_6045_6525_6545_Oscilloscope_Service_Manual.pdf

author: AndrewBCN
author_rank: Frequent Contributor
timestamp: September 15, 2021, 11:17:03 am
content: I would still recommend that you check the prices of new inexpensive Chinese DSOs delivered to Pakistan.If you really, really must buy a used scope, I suggest you watch this video:
Brymen BM257s or Uni-T UT61D+? - Page 1
Forum section: electronics / testgear

author: AlexTee
author_rank: Contributor
timestamp: September 16, 2021, 11:49:53 am
content: Hi.Can't decide over those two.The problem is there are no detailed reviews of either meter. I understand that it is preferable to go for a higher quality product like Brymen, but the 61D+ can be mine for less than 45 USD imported directly from China.What are your recommendations?

author: Fungus
author_rank: Super Contributor
timestamp: September 16, 2021, 12:34:31 pm
content: What are you going to use it for? How much will the Brymen cost you where you live? Why that model of Brymen?If I was going to go low-end I'd get an Aneng 870 (or a Uni-T UT139C if you're a Uni-T fan)

author: AndrewBCN
author_rank: Frequent Contributor
timestamp: September 16, 2021, 02:12:43 pm
content: Quote from: AlexTee on September 16, 2021, 11:49:53 amIt's a rather simple decision. If your budget is < 50€, go for the UT61D+. If your budget is ~110€, go for the Brymen BM257s.https://brymen.eu/shop/bm257s/

author: PA4TIM
author_rank: Super Contributor
timestamp: September 16, 2021, 02:58:27 pm
content: Brymen is very good, in the same arena as brands like Fluke. Uni-T is good looking junk.

author: AlexTee
author_rank: Contributor
timestamp: September 16, 2021, 08:16:07 pm
content: Quote from: Fungus on September 16, 2021, 12:34:31 pmMostly electronics repair/development, rarely - residential electrical works.LoZ is a handy feature I'd like to have, as well as Temp measurement. Bar graph is a nice addition, too.For the budget limit of 100 Euro, I can only afford up to Brymen BM257s with these three features built-in, and since I don't work with High Voltage over 220 V RMS, I though the UT61D+ might also meet my requirements. Aneng 870 is not on par feature wise, and its build and quality is inferior to even Uni-t UT61D+.

author: AlexTee
author_rank: Contributor
timestamp: September 16, 2021, 08:19:47 pm
content: Quote from: AndrewBCN on September 16, 2021, 02:12:43 pmAgree, however, the UT61D+ is a newer model, and it might have quicker Auto-Ranging and capacitance testing, but that is just an assumption, because reviews are missing for both.