hybridfree/eevblog-posts huggingface dataset:
EEvBlog 121GW Bluetooth - Page 1
Forum section: electronics / testgear

author: Zfrenchy
author_rank: Contributor
timestamp: October 22, 2024, 12:46:17 am
content: hello all,Apologize in advance if the topic was discussed before, but the forum is so huge, I cannot find the info I am looking for.Just got my multimeter GW121, bought it especially for the bluetooth function, which can be a very good help for my day job of troubleshooting low voltage. But, I am disappointed, the Android App (Meteor) cannot be installed on my phone, because the phone is too recent, now I am limited to deploy my laptop and the Windows app (which I was required to buy a more recent Bluetooth/USB dongle).What is the most recent Android App for this multimeter, for live reading, and logging through Bluetooth ?

author: coromonadalix
author_rank: Super Contributor
timestamp: October 22, 2024, 11:58:05 am
content: you have an huge 121gw thread here you should have done a search and posted there instead, but do a read it may help you

author: Zfrenchy
author_rank: Contributor
timestamp: October 26, 2024, 02:23:51 am
content: just past 2 hours of my life looking for answers about what recent app will work with the 121gw.experience not good, nothing recent work with an Android phone.If I do not find an reason to keep this meter, I will classified EEVBlog 121GW as a SCAM product, not giving the result spec on the product !

author: ejeffrey
author_rank: Super Contributor
timestamp: October 26, 2024, 02:51:51 am
content: Quote from: coromonadalix on October 22, 2024, 11:58:05 amI mean the last page of the 121GW thread also basically says there is no app supported on any recent Android version. Which is pretty much par for the course with android. Simple intrinsically secure apps are kicked off for being "out of date" even though there is nothing wrong with them while adware laden crap that is privacy violating by design is promoted as long as it gets recompiled once a year for the latest android version (cramming ever more invasive ads and trackers in while they are at it).

author: Zfrenchy
author_rank: Contributor
timestamp: October 26, 2024, 03:02:53 pm
content: If is just that, nobody can recompile for the newest android OS ?

author: Kean
author_rank: Unknown
timestamp: October 26, 2024, 04:43:45 pm
content: Quote from: Zfrenchy on October 26, 2024, 03:02:53 pmGo for it. The source code is available, and so it Android Studio.

author: EEVblog
author_rank: Unknown
timestamp: December 03, 2024, 09:51:59 pm
content: FYI, the Meteor app for the 121GW was just updated today for Android 14 compatibility:https://play.google.com/store/apps/details?id=com.westerncomputational.meteor&hl=en_AU&pli=1
Oscilloscope Specifications Questions - Page 1
Forum section: electronics / testgear

author: Vancouver_Kid
author_rank: Newbie
timestamp: December 03, 2024, 05:51:49 pm
content: Hello,I've never paid too much attention to oscilloscope voltage specifications as well as probe voltage vs frequency derating graphs. Yet, I've never toasted any scopes even though I do power-related work...I attached an image showing the voltage spec of a scope from Siglent (SDS800X HD) I'm looking into, and saw the front end can handle 400Vpk up to 10 kHz (pretty classic), presumably with asine wave. Now, within the smps world the switch node is usually a square wave (voltage measurement). Square waves have much higher frequency content, so, that spec should derate very quickly not only from the fundamental switching freq POV (because you are most likely switching at 30kHz to 500kHz, or higher) but also with the added harmonics.Do scopes show "Max Input Voltage" spec with different waveforms, say with square waves?Or, is that why we just say #$%@ it and use a HV isolated diff probe and forget about it for measuring anything DC-coupling related?Let's say you don't have access to a HV isolated diff probe but want to measure that switch node with a 10X probe, how would you figure out using datasheets or any information to see if that square wave of "X" amplitude and frequency won't nuke your setup (probe to scope front-end)? Let's assume a PFC feeding some DC-DC input stage, so, 390VDC output with a 20VACrms ripple, and measuring the voltage at the switch node of a hard switched half-bridge.Cheers

author: 2N3055
author_rank: Super Contributor
timestamp: December 03, 2024, 07:02:02 pm
content: Quote from: Vancouver_Kid on December 03, 2024, 05:51:49 pmIt is 400V Peak. Means Peak. AC or DC or AC+DC.At no point voltage applied to input should have more than 400V. DC-10kHzOver that, I've seen some scopes specify how derating curve looks, like 20dB/oct or something like that.I don't know what is specification for SDS800xHD.And I will repeat this once: it is NOT recommended to use classic passive probe for SMPS work.Probe frequency derating is only minor part of that reason.Most important reason is that one side of the probe is hard grounded to PE terminal on power cord and will create big badaboom if it touches some energized part of ground referenced circuit.Which can happen even without intention (probe slips, ground clip unclips and falls where it should not..).Active differential probe has both probes "safe" to connect anywhere in circuit.That also makes some measurements possible that otherwise would not be: a voltage across any part of the circuit.
Hack Micsig STO1104C to E version - Page 1
Forum section: electronics / testgear

author: ptluis
author_rank: Frequent Contributor
timestamp: December 02, 2024, 04:49:40 pm
content: Is it possible to hack the micsig STO1104C to the E version STO1104E? increasing the memory to 70mpts? Besides memory differences are there any other differences?
What can I do get the SDS804 to trigger this waveform - Page 1
Forum section: electronics / testgear

author: hp3310a
author_rank: Regular Contributor
timestamp: December 02, 2024, 02:38:59 pm
content: Hi everyone,after 30 minutes of trying to get this to trigger correctly (I tried edge, pulse, interval, slope), I'm running out of ideas what I can do.So this is more an academic question, I guess. I have this power supply voltage that somehow gets the counter signal added on top (not sure how that happens, maybe through ground?). Of course it would be great to get rid of THAT, but I first like to be able to see it clearly (in run mode, stopped works OK).There are lots of spikes and I guess that's what is throwing it off. Any ideas?

author: Mahagam
author_rank: Regular Contributor
timestamp: December 02, 2024, 02:47:33 pm
content: Try to set hold-on to 120us. Its located in the trigger menu.

author: hp3310a
author_rank: Regular Contributor
timestamp: December 02, 2024, 02:50:41 pm
content: Brilliant, works great, thank you!

author: newbrain
author_rank: Super Contributor
timestamp: December 02, 2024, 03:12:39 pm
content: Looking at the signal, another setting that might have helped is HFR (High Frequency Reject), from the manual:Quote
Gould K20 Logic Analyzer probes - Page 1
Forum section: electronics / testgear

author: Vaionko
author_rank: Newbie
timestamp: December 02, 2024, 02:37:21 pm
content: A bit of a long shot, but: I have acquired a (free) Gould K20 Logic analyzer, but I don't have the probes for it. I have reverse engineered most of the input connector, but there are some outputs for the active probe.I'm wondering if anyone here would happen to have a probe for this device and could give me some pictures. There are zero pictures of the probes that I can find online.
Recommendation for a signal generator covering FM band - Page 1
Forum section: electronics / testgear

author: davorin
author_rank: Unknown
timestamp: December 01, 2024, 10:04:54 am
content: Good morning (o;For some electronic projects I'm looking for an affordable signal generator that can cover the FM band and maybe do FM modulation as well.Preferably with LAN port for remote controlling.thanks in advance

author: Kean
author_rank: Unknown
timestamp: December 01, 2024, 11:15:26 am
content: As you mentioned wanting to get a Siglent SSA in another thread, maybe look at a Siglent SDG.I'm not sure what other features you want, or your budget, but both SDG1032X and SDG2042X support FM modulation and LAN control. They can also be "enhanced" for an increase in max frequency.I don't own any Siglent gear yet, but I have been reading up on them of late...See this video for a comparison of the models

author: davorin
author_rank: Unknown
timestamp: December 01, 2024, 11:20:36 am
content: Hmmm…then the SDG2122X….as I would need max. frequency of 108MHz plus 10.7MHz…Or can the bandwith be unlocked as well on lower models?Not cheap but affordable ;-)

author: Kean
author_rank: Unknown
timestamp: December 01, 2024, 11:26:14 am
content: Yeah, sorry - you'd need the 120MHz model for the full FM band.My understanding is you can unlock the lower SDG2000X models to the 120 BW - but you best read the corresponding threads on that yourself.https://www.eevblog.com/forum/testgear/siglent-sdg2042x-hack-door-closed/- skip to page 8 or so to save timehttps://www.eevblog.com/forum/testgear/unified-keygen-script-for-siglent/

author: Aldo22
author_rank: Super Contributor
timestamp: December 01, 2024, 11:57:39 am
content: TinySA isveryaffordable.

author: David Hess
author_rank: Super Contributor
timestamp: December 01, 2024, 05:16:11 pm
content: Might be better to use a simple fixed local oscillator and mixer to upconvert the output of a lower frequency modulated source.

author: GigaJoe
author_rank: Frequent Contributor
timestamp: December 01, 2024, 06:07:46 pm
content: maybe this one ?https://vi.aliexpress.com/item/1005004144175784.html

author: wasedadoc
author_rank: Super Contributor
timestamp: December 02, 2024, 11:26:43 am
content: Quote from: GigaJoe on December 01, 2024, 06:07:46 pmMake sure you use an attenuator to tame its 500 MegaVolt output level.

author: Mahagam
author_rank: Regular Contributor
timestamp: December 02, 2024, 01:28:53 pm
content: I have Siglent SDG2042X unlocked to SDG2122X.I turned it on as a "transmitter" in the broadcast range and caught the signal on the SDR receiver.
SCPI programming Siglent SSA3032X-R VNA mode  - Page 1
Forum section: electronics / testgear

author: amar87
author_rank: Regular Contributor
timestamp: December 01, 2024, 06:41:36 pm
content: Dear Forum,I would like to be able to download a touchstone file from the device in VNA mode, however i can only save on a USB stick which is extremely annoying.So i thought i would donwload the data from the screen via SCPI commands and could make my own touchstone file with python. However i can't figure out how to get the X (frequency) values.After consulting the programming manual I could find the :TRACe:DATA? 1 command but this seems to give an array but this seems to be the Y values for the trace. Does anyone know how to do this ?

author: Someone
author_rank: Super Contributor
timestamp: December 02, 2024, 06:07:49 am
content: Can do like the other brands and calculate it locally:https://helpfiles.keysight.com/csg/FFProgrammingHelpWebHelp/Examples/Python_Example.htm

author: amar87
author_rank: Regular Contributor
timestamp: December 02, 2024, 11:40:26 am
content: Thanks a lot, yes i can calculate it locally but to me it makes sense that they have implemented this the data is there. I will give it a try.
Rohde Schwarz SFU - Interferer - Page 1
Forum section: electronics / testgear

author: OliverWirthg
author_rank: Contributor
timestamp: December 02, 2024, 10:22:26 am
content: I would like to ask about the capabilities of the R&S SFU with option K35: ARB generator and option K37: Interferer management. My question concerns the document "Digital dividend: testing of TV receivers":https://www.rohde-schwarz.com/sg/applications/digital-dividend-testing-of-tv-receivers-application-card_56279-12352.htmlIt states that the interferer signal can be played using the ARB generator. The document states that the I/Q file can be played in R&S format or generated by "R&S®WinIQSIM2" - in this case the corresponding option is needed - for LTE signal e.g. R&S®SFU-K255.If I would like to play e.g. LTE signal in the ARB generator without the corresponding option K255, is this possible if the I/Q file is in R&S format? Is it possible to synthetically generate such a file or is it possible to upload it?Thanks....
Owon SPE3103 power supply - Page 1
Forum section: electronics / testgear

author: IC_Toaster
author_rank: Regular Contributor
timestamp: December 01, 2024, 08:52:38 am
content: I bought this power supply and I received it yesterday.The main complaining I have read or seen on videos is the fan noise. I have not had problem to it so far because I proved the power supply just with a 150 ohms resistor, so the output power is very low.The issue I have found is what I think is too much electrical noise. Some peaks are greater than 1 volt for a 5v output.I attach some pics obtained with the oscilloscope.Is this noise acceptable?Should I return the power source?

author: Hydron
author_rank: Super Contributor
timestamp: December 02, 2024, 09:38:22 am
content: I think that's a similar model to one I returned for being wildly unacceptable for electrical and audible noise at all power levels. I had a look inside mine but not a lot could be done to improve it - already had snubbers etc (resistors of which were getting rather hot even at low power, so reasonable fan speed was needed). A shame given the price, reasonable build (though not design) quality and other features.Edit: checked amazon history and yes, the one I got is a "SPE6103" - the 60V version. If it were me I'd send it back, but you will know your use case better than me, might be fine for some tasks where noise isn't an issue. Also added a scope cap to demonstrate the scale of the issue.
Rigol DS2202A licence missing. - Page 1
Forum section: electronics / testgear

author: reduss
author_rank: Newbie
timestamp: November 21, 2024, 10:12:41 am
content: Hi. I have a problem with my Rigol DS2202A. I wanted to unlock the functions but I saw that I first had to update to the latest version. Old version 00/03/01. While uploading a new one, the progress bar stopped and did not complete the installation. I found new software 00/03/06 and uploaded it: During startup, I pressed "help" twice, inserted the pendrive and the new software was installed. But now there is a problem because I have no additional options. The UTILITY - Installed button is completely gray and cannot be pressed.I downloaded the dump file via "RigolBildschirmkopie" 32MB and uploaded it to RIGUP 0.4. Unfortunately, rigup shows NO KEYS. I recorded the IND value in the ULTRA SIGMA program. My file only has 50 count and I can only see the serial number and model. Someone else on the forum has COUNT:306 and you can see the encrypted keys. I don't have that. Is there any way to fix this?? How to add licence? Thank you for any help. Radek

author: tv84
author_rank: Super Contributor
timestamp: November 21, 2024, 10:49:51 am
content: Have you tried using the Riglol old keygen with default key?https://gotroot.ca/rigol/riglol/

author: reduss
author_rank: Newbie
timestamp: November 21, 2024, 11:09:26 am
content: Yes.Not working. Im not sure but is for DS2202 mode, not DS2202A.Alsow i tryed DS2000A_Upgrade_Utility_1_0_0_0_Installer.exe and inform : invalid software.

author: reduss
author_rank: Newbie
timestamp: November 21, 2024, 11:57:35 am
content: Here is link to download my dump:https://we.tl/t-vzykRvgYIN

author: reduss
author_rank: Newbie
timestamp: December 01, 2024, 10:05:12 am
content: New linkhttps://we.tl/t-UwxL9rDJ1e.

author: Fenstergucker
author_rank: Regular Contributor
timestamp: December 01, 2024, 01:29:23 pm
content: 'rigup v0.4' works with your file. I have sent you the keys via PM, maybe they will work.Peter

author: reduss
author_rank: Newbie
timestamp: December 01, 2024, 08:57:54 pm
content: Thanks Fenstergucker and tv84. All working !
Enabling option 010 to Agilent 4395A LCR meter - Page 1
Forum section: electronics / testgear

author: matthieu.e
author_rank: Regular Contributor
timestamp: December 02, 2024, 11:04:03 am
content: Hello,I plan to buy a Agilent 4395A for LCR measurement.I saw a unit without the 010 option (the LCR measurement option).Did someone succeed to unlock this option here in the forum ?

author: RomDump
author_rank: Regular Contributor
timestamp: December 02, 2024, 01:33:38 pm
content: Quote from: matthieu.e on December 02, 2024, 11:04:03 amThe instructions areRe: 4395A software. However, you have to patch the EEPROM. No one has currently figured out how to reproduce the upgrade disk.
Enertec/Schlumberger 2630 Programmable Reciprocal Counter - Page 1
Forum section: electronics / testgear

author: Nazareth
author_rank: Contributor
timestamp: May 14, 2014, 01:41:48 pm
content: Hi,New to the forum and thought I would start by seeing if anyone has a counter like this. I recently aquired one of these for nothing and can't seem to find a manual or schematic anywhere. It was made in France, maybe all the schematics and manuals are there. If anyone has any info on this piece of equipment, please share. Thanks.Naz

author: Nazareth
author_rank: Contributor
timestamp: June 10, 2014, 02:51:11 am
content: Update: I found the only manual w/schematic for this counter on E-Bay today and won the bid. If anyone took the time to try to find this manual, thanks to you. This thing seems to be rarer than a 1959 Les Paul, too bad I can't get that kind of money out of the counter though.Naz

author: retrolefty
author_rank: Super Contributor
timestamp: June 10, 2014, 02:58:28 am
content: Quote from: Nazareth on June 10, 2014, 02:51:11 amwhich is even rarer then a 1959 Les Paul I bet.

author: Nazareth
author_rank: Contributor
timestamp: June 10, 2014, 03:02:07 am
content: Haha, got to love the 1959 Lea Pau too. I fat fingered that. Now corrected, thanks.

author: idrad_08
author_rank: Newbie
timestamp: December 01, 2024, 04:22:19 pm
content: Hi there,i know it's been 10 years...But i now have the option to buy such a device and like in your case 10 years ago i can't find any information like a manual or so. Does anybody maybe have some information about the specs (of the 2631). It's crazy that the internet is empty if i google it (including archive.org).Thanks a lot in advanceGreetings
SSA3021X Plus questions - Page 1
Forum section: electronics / testgear

author: Battle
author_rank: Contributor
timestamp: November 22, 2024, 08:17:52 am
content: Are there any hardware differences from the Siglent SSA3021X Plus to the SSA3032X Plus or even SSA3075X Plus?Or to put it more frankly..If you have a 3021X Plus, will it unlock into a 3032X Plus or even the 3075X Plus? Or is there hardware limitations that prevent this kind of upgrade?

author: coromonadalix
author_rank: Super Contributor
timestamp: November 22, 2024, 12:19:38 pm
content: SSA3021x was unlocked to SSA3032x with no problemsnever tried the SVA conversion

author: Battle
author_rank: Contributor
timestamp: November 22, 2024, 01:11:42 pm
content: That's cool, thanks.I wish the SSA to SVA procedure was more consolidated, direct & to the point. Involving current production of these vs older post, firmwares & possible hardware missing etc.

author: davorin
author_rank: Unknown
timestamp: December 01, 2024, 09:57:46 am
content: Good morning (o;Just thinking about getting me a Siglent SSA model for me with the xmas bonus (o;Is there like a chart which model can be unlocked to what model and what features can be enabled with the python keygen?I assume a non-Plus model can't be unlocked to a Plus model due to hardware differences? At least I see different values for DANL. Or is the main difference the touchscreen?Though the SSA3021X-Plus is currently on sale until December 31st here...
Agilent 16801A Manuals - Page 1
Forum section: electronics / testgear

author: burnhamcontrol
author_rank: Newbie
timestamp: May 03, 2024, 05:22:24 pm
content: I am looking for info on a 16801A logic analyser, have found some manuals but could do with some circuit diagrams to use for fault finding. Anyone have anything that might be useful ?

author: alm
author_rank: Super Contributor
timestamp: May 03, 2024, 05:38:40 pm
content: I doubt you'll find any circuit diagrams. I think the last HP logic analyzers that had their schematics published came out in the 1980s (e.g. the 1630 series). You might be able to find block level diagrams, and otherwise search for troubleshooting reports on this forum and the HP_Agilent groups.io group. I'd expect the 16800 series acquisition boards to be fairly similar to the 16750 series of plug-in blades for the 16700 and 16900 series.

author: gslick
author_rank: Frequent Contributor
timestamp: May 03, 2024, 06:44:52 pm
content: Quote from: alm on May 03, 2024, 05:38:40 pmThe 16803A, 16806A, and 16823A logic acquisition boards are essentially identical to 16910A 102 channel logic acquisition modules.The 16802A, 16804A, and 16822A logic acquisition boards are essentially identical to 16911A 68 channel logic acquisition modules.The 16801A and 16821A logic acquisition boards are essentially identical to 16912A 34 channel logic acquisition modules, but 16912A modules never existed as standalone products.The 16821A, 16822A, and 16823A pattern generators boards are essentially identical to 16720A pattern generator modules.As far as I know there must be some different values in the EEPROMs of these modules that lock them to use in 16800 series analyzers and normally prevent their use in 16900 series analyzers.Anyway, if any self tests fail on the logic acquisition boards there probably isn't a lot that can be done to try to repair them, other than looking for corroded PCB traces that sometimes happens due to the corrosive adhesive issue on the skid runners on the bottom of the logic acquisition boards.

author: vishaldotgupta
author_rank: Regular Contributor
timestamp: November 30, 2024, 06:31:09 am
content: i have 16821A with few test failing for pattern generator. board is a such clean and no corrosion etcany idea on schematics or detailed block diagramor may be information on 16720A which can be compared
Agilent 16801A Logic Analyzer Repair - Page 1
Forum section: electronics / testgear

author: burnhamcontrol
author_rank: Newbie
timestamp: May 11, 2024, 06:46:12 am
content: I have an Agilent 16801A logic analyser that was booting without issues, but now does not boot and gives one long BIOS beep and gets no further. Does anyone know the bios codes for these machines as I cant find anything in the service manual.I have ordered replacement DDR ram modules as a starting point for fault finding

author: vishaldotgupta
author_rank: Regular Contributor
timestamp: October 30, 2024, 06:13:42 am
content: i would suggest pulling out motherboard from unit and connect it to std atx desktop psu and external vga monitor and short the two power pin on motherboard.if all good it should boot to biosthe internal psu of logic analyser wont work unless everything is okay

author: burnhamcontrol
author_rank: Newbie
timestamp: November 05, 2024, 03:25:43 pm
content: Did manage to get this sorted in the end, had to replace the motherboard which was a standard item off the shelf

author: vishaldotgupta
author_rank: Regular Contributor
timestamp: November 30, 2024, 06:27:23 am
content: good to know.i believe your unit is a two slot model and the second should be a pattern generator.Mine unit is failing few test on pattern generator
Fluke 2640 Netdaq Remote Command Set ? - Page 1
Forum section: electronics / testgear

author: tridac
author_rank: Regular Contributor
timestamp: November 18, 2023, 03:41:34 pm
content: Have searched for the docs describing the network or serial remote command set for the 2640, with no result. Need to write my own network based app to drive this, so does anyone know where the remote command set documentation can be found ?. The similar function HP34972 uses a SCPI command set, and is well documented, but can't find the command set the 2640, in any of the existing manuals for the product.Thanks...

author: alm
author_rank: Super Contributor
timestamp: November 18, 2023, 10:40:43 pm
content: Looks like theLabVIEW driverwas also using the DLLs that came with the DAQ software. So I guess it's a binary protocol rather than something common like SCPI. If you manage to find a (trial) version of the software and a computer / virtual machine to run it on, you might be able to intercept the network traffic using a tool like Wireshark and reverse-engineer if you have the time and motivation.If you need results quickly, I'd look at better documented solutions like the HP instrument or something like the Labjack. Inthis reddit postsomeone was also looking for alternatives because they could not control the Fluke DAQ without using its software.

author: tridac
author_rank: Regular Contributor
timestamp: November 19, 2023, 04:43:41 pm
content: Thanks, more or less what I found. Their software was pretty underwhelming, from memory, and the lack of docs for the remote command set makes it unusable here. Picked up an HP 34972a a while back, 6.5 digit and extensively documented. Fluke are usually pretty good, so why this blatant market control ploy ?. If I buy an instrument, expect to be able to use all it's functions, not just a subset, nor be forced to buy their expensive bloatware apps to use it. Still, HP Benchlink is not ideal either, windows centric, bloatware install, several packages needed, at vast expense. Better to write your own if you can...

author: fenugrec
author_rank: Frequent Contributor
timestamp: September 30, 2024, 06:17:52 pm
content: Found this,https://github.com/Doridian/NetDAQ, they have documented some of the protocol, and indeed it's a custom binary thing.

author: tridac
author_rank: Regular Contributor
timestamp: November 30, 2024, 12:39:55 am
content: Thanks for that, but found an hp34972a, and sold the NetDaq. The 34972a scpi command set is in the manual and is network enabled.. Worked out of the box. Most Fluke kit is first class, so wonder what happend there ?. Potentially great product spoiled by lack of info.
Looking for sample oscilloscope pictures.  - Page 1
Forum section: electronics / testgear

author: sparkyinak
author_rank: Contributor
timestamp: November 30, 2024, 09:11:31 am
content: Does anyone have any oscilloscope screen captures or screen shots of AC sine waves during a ground fault you're willing to share? I can't find any on the internet. Thanx in advance👍🏼😁👍🏼

author: tggzzz
author_rank: Super Contributor
timestamp: November 30, 2024, 10:16:57 am
content: Quote from: sparkyinak on November 30, 2024, 09:11:31 amWhat type of ground fault?For what purpose; what do you expect/want/need to see?Realise most scopes only work when safely and correctly connected to a working PME. Fully isolated scopes (e.g. Tek THS710) don't have that limitation.

author: Traceless
author_rank: Frequent Contributor
timestamp: November 30, 2024, 10:51:19 am
content: Are you looking for something likethis?

author: sparkyinak
author_rank: Contributor
timestamp: November 30, 2024, 07:01:18 pm
content: Any for referencing. Although I have no issue with tripping a breaker or fuse, I do not want to risk damaging my scope. I scoured the internet and came up with squat. If you you have any examples with details, I'd appreciate it. I'm new with using scopes and trying to learn how to interpret the data. Although I have a general idea, it's good to have references.

author: tggzzz
author_rank: Super Contributor
timestamp: November 30, 2024, 07:15:14 pm
content: You are dealing with high energy systems. That realisation alone should give you cause for thought.See the safety and praxis references athttps://entertaininghacks.wordpress.com/library-2/scope-probe-reference-material/Carefully. Note that there is one example where anexperiencedengineer using a scope on the mains took precautions -and still killed themself.Physics is unforgiving, and disregards both good intentions and what you thought.

author: sparkyinak
author_rank: Contributor
timestamp: November 30, 2024, 07:32:33 pm
content: No because I already have it. I'm the one who posted it. I'm not sure that's a short, fault or some sort of an interference. Hence the post...🤣🤣🤣

author: tggzzz
author_rank: Super Contributor
timestamp: November 30, 2024, 08:46:52 pm
content: Quote from: sparkyinak on November 30, 2024, 07:32:33 pmCare to give us a clue what that is referring to?(The quote button to the top right of the post makes that easy)
HP 410b / 410c Probes & Leads Repair / Replace - Page 1
Forum section: electronics / testgear

author: The Doktor
author_rank: Regular Contributor
timestamp: April 04, 2022, 07:13:00 am
content: I am currently repairing my HP 410b VTVM, as well as trying to provide some help to another fellow who is doing the same.The main thing I'm interested in is the AC probe and it's cable. I purchase some Belden 9222 quite cheaply a while back planning to use that to replace the probe cable. Is that a good choice, or is it likely to have the center conductor fatigue and break in short order? If the 9222 is not a good choice, is there a better Triax cable you can recommend? I have seen that kiss-electronics.com sell something they say is superflex Triax for the probe lead, for $35. I'd rather try to do it cheaper, but that is an option if there is nothing else recommended.Are there any other problems with the AC probe that I should be aware of? I have had good luck with it over the years, but if it is prone to any type of problem, I would still prefer to take steps to prevent it.For the DC lead, what is a good, highly flexible coax to use for that?ThanksEd

author: kbrill
author_rank: Contributor
timestamp: April 04, 2022, 05:14:30 pm
content: I have a 11036a probe ( complete ?) as well as many partial assemblies which include cable & plug . while tarnished all are new replacement parts I purchase at a large military electronics auction in bulk .Contact me if this will be of any help .Ken

author: DrewUSN
author_rank: Newbie
timestamp: November 29, 2024, 11:41:11 pm
content: I have a 410B that needs an AC assembly, would you happen to have one or parts of it? I know this an old thread but I’m looking for options.Thx,Drew

author: kbrill
author_rank: Contributor
timestamp: November 29, 2024, 11:59:38 pm
content: I only have partial probe assemblies :consisting of the following :1251-0209 telephone plug11036-42102 bootactual cable red11036-42101 boot11036-62101 tube socket and cable assemblyAll components are new and pre-assembledHardly a complete probe but the most often required replacement partsCost would be minimal

author: kbrill
author_rank: Contributor
timestamp: November 30, 2024, 12:02:59 am
content: You probably should have contacted me directly as I am not really following that threadI only have partial probe assemblies :consisting of the following :1251-0209 telephone plug11036-42102 bootactual cable red11036-42101 boot11036-62101 tube socket and cable assemblyAll components are new and pre-assembledHardly a complete probe but the most often required replacement partsWhile doubtful if this would be of any assistance to you the cost would me minimal
Looking for user feedback of the following BK Precision lines of power supplies - Page 1
Forum section: electronics / testgear

author: freakquency
author_rank: Newbie
timestamp: November 01, 2016, 03:52:00 pm
content: Particularly, life, durability, and ease of use. Has it met your expectations?And the topology; for example, what is the core regulator or is it discreet. Any feedback would be appreciated.Single Output DC Power SuppliesModels 1710A, 1711A, 1715A, 1730A & 1735Ahttps://bkpmedia.s3.amazonaws.com/downloads/datasheets/en-us/17xxA_datasheet.pdfSingle Output DC Power SuppliesModels 1620A, 1621A, 1623A, 1626A & 1627Ahttps://bkpmedia.s3.amazonaws.com/downloads/datasheets/en-us/1621A_datasheet.pdf

author: Hydrawerk
author_rank: Super Contributor
timestamp: November 29, 2024, 11:07:59 pm
content: Who is the original manufacturer of BK Precision Model 1715A?? There are not many PSUs with 60V 2A and fine current setting... Is it made by MCP??https://www.mcpsh.cnOr by GW Instek?I think that most BK precision products are rebadged.
comparison between TEKTRONIX 492 and RIGOL DSA815TG - Page 1
Forum section: electronics / testgear

author: george79
author_rank: Contributor
timestamp: November 28, 2024, 10:19:48 pm
content: Hello, i want to buy a spectrum for my lab. Im working on RF equipment, amplifiers, LPF etc in frequencies max of 200Mhz. Size is not a problem, and the price for the two spectrums with added TR503 on the TEKTRONIX is about the same.Please what do you say on that? Pros and Cons???Thank youGeorge

author: xtech
author_rank: Regular Contributor
timestamp: November 29, 2024, 07:41:30 am
content: Don't know anything about Rigol but I have Tek492 and Advantest R4131A. I really hate 492 but paid 300 eur and it has 21GHz so I'm using it from time to time. Worst thing is that you have to manually peak internal mixer bias. Dynamic range is also poor. In the past I had HP 8559 (also 21GHz) and this was my best SA, Advantest is also nice but dynamic range is worse (and 3.5GHz only). Tek was never good at SAs - HP 141 was also a terrible boat archor. If we are talking about 40 years old instrument best is to look on HP.

author: wn1fju
author_rank: Frequent Contributor
timestamp: November 29, 2024, 01:47:27 pm
content: I have both the DSA815TG and a Tektronix 2754 spectrum analyzer (which is a slightly "better" version of the 492). The Tek spectrum analyzers are hopelessly complicated, not particularly well thought out in the user interface area, and are not for the novice when they need repair (assuming you can get the microwave assemblies).If I'm looking at spectra below 1.5 GHz, there is no reason I would ever turn on my Tek 2754. So if you are sure that you don't need/want higher frequency coverage, get the Rigol. A simple choice in my opinion.

author: george79
author_rank: Contributor
timestamp: November 29, 2024, 09:01:28 pm
content: Thanks for the replies, i will get the rigol. I was thinking the age of the TEK and its full of tantalum capacitors and other parts that they are ready to die and im afraid to give my money and dont have support.
SPD3303C Calibration - Page 1
Forum section: electronics / testgear

author: 7thSenpai
author_rank: Contributor
timestamp: December 27, 2023, 05:28:20 pm
content: Hello,I have a Siglent SPD3303C for about a year now and noticed now on Ch2 sits on reading 0.01 Ampere reading even without load. I figure I need to calibrate it. I have the service manual that seems poor to explain in detail calibration procedures. I mean al the manual says is to run some python script that I am suppose to magically have. So I'm here, has anyone ever performed calibration to this PS? Does anyone have any more documents for calibration? Much appreciated in advanced.

author: slugrustle
author_rank: Frequent Contributor
timestamp: January 21, 2024, 07:07:13 pm
content: I have the same question. Two python scripts are mentioned in the attached E01A version of the service manual: VoltageCalib.py on page 14 and CurrentCalib.py on page 15.Some interesting things about this:1. The version E01B service manual which is presently available on Siglent's website says nothing about how to perform calibration.2. The "quick start" document that is really the product manual talks about the SCPI commands, but none of the documented commands have anything to do with calibration.3. The EasyPower utility program does not appear to have any functions related to calibration.

author: lugamodder
author_rank: Newbie
timestamp: September 27, 2024, 12:45:44 pm
content: Quote from: slugrustle on January 21, 2024, 07:07:13 pmWere you able to calibrate the unit or find python scripts from the service manual?

author: daisizhou
author_rank: Super Contributor
timestamp: September 27, 2024, 11:55:12 pm
content: The SPD3303D I use has a voltage on channel 1 that is always 0.01-0.02v higher.Please see the pictures below.I don't know how to calibrate it

author: lugamodder
author_rank: Newbie
timestamp: September 28, 2024, 12:48:01 pm
content: Quote from: daisizhou on September 27, 2024, 11:55:12 pmI have the same problem with SPD3303D.SCPI Calibration commands, described in SPD3303X service manual (and on this forum) are not accepted by the device.And Silent support couldn't help. Perhaps calibration commands for SDP3303C will work, because this device is quite older than SDP3303X. Or there is some device feature, such as a line ending character or a separator in a command, that is different for X and D.

author: daisizhou
author_rank: Super Contributor
timestamp: September 28, 2024, 12:59:27 pm
content: My CH2 channel is very accurate,CH1 is also accurate initially, but due to frequent use, CH1 gradually deviates.It looks like a hardware deviation, possibly due to aging of relay contacts or capacitors.

author: Terraqua
author_rank: Newbie
timestamp: November 29, 2024, 05:54:42 pm
content: Did you find a solution? I also have a 10mA offset without a load... (A little less because it jumps from 0 to 10mA all the time...)
Which DC Load? - Page 1
Forum section: electronics / testgear

author: Hrvoje_CRO
author_rank: Regular Contributor
timestamp: November 28, 2024, 06:06:39 pm
content: Hi!I am buying a quality, stable and reliable DC load for max. ammount up to 1000-1200 euros.So main question is which one?Thank you in advance,Kind Regards,Hrvoje

author: Gribo
author_rank: Frequent Contributor
timestamp: November 28, 2024, 07:46:32 pm
content: This thread should be either in the Power section or the general test equipment. What are your requirements? Current? Voltage? max power? Size? Programming interface?
New Tektronix Isolated Current Shunt Probe  - Page 1
Forum section: electronics / testgear

author: Techmark
author_rank: Newbie
timestamp: November 28, 2024, 04:50:15 pm
content: Hey all,Have you heard about the new Tektronix Isolated Current Shunt Probe?https://www.tek.com/en/products/oscilloscopes/oscilloscope-probes/isovu-isolated-current-probesIt seems to be RF isolated and on specs has incredible CMMR. It is certainly cheaper than their Optically Isolated Probes, but I'm concerned here about the shunt current measurements on the High Side. Did anyone use this probe or have some experience with it?
Needed: Wandel & Golterman DT-10 Manual / Service Manual - Page 1
Forum section: electronics / testgear

author: Astralix
author_rank: Regular Contributor
timestamp: November 28, 2024, 02:02:57 pm
content: Hi!I am on the Hunt for a Manual and Service Manual for the old Data-Analyzer DT-10.Unfortunately, the usual sources do only have DA-10 papers as scans.Any help there?Astralix
MDP3000: How to reach the max input differential voltage? - Page 1
Forum section: electronics / testgear

author: fgervais
author_rank: Newbie
timestamp: November 28, 2024, 01:44:06 pm
content: I'm looking at the differential probe MDP3000 specification and I see that the max input differential voltage at 1000x is 3000V.However I am puzzled on how this can be reached because the Max voltage to ground is stated at 1000V.Within those constraints, I imagine the widest that can be measured is -1000V (1000V to ground) and +1000V (1000V to ground).But this only make 2000V of the 3000V input limit.How can the full 3000V be measured staying within the max voltage to ground spec?
Desperate requests for Tektronix 11302 oscilloscope - Page 1
Forum section: electronics / testgear

author: Gianni
author_rank: Contributor
timestamp: November 28, 2024, 02:56:20 am
content: Dear All,I have a wonderful 11302 oscilloscope that works rather well but fails Enhanced Accuracy, often destroying its setup and becoming unusable. Before sending more information, I have two questions:- has someone the files for EPROM upgrade to level 3.1?- is there someone with some knowledge who would try to help me in this repair?Desperately thanksGianni

author: squadchannel
author_rank: Frequent Contributor
timestamp: November 28, 2024, 03:04:57 am
content: available in TekWiki.https://w140.com/tekwiki/wiki/ROM_images

author: Gianni
author_rank: Contributor
timestamp: November 28, 2024, 09:06:28 am
content: Thank you!But I am not sure about the versions. My 11302 has a set of EPROMs with -06 revision index and it is the 2.7 version (see attachment) . On TekWiki, the files for the 11302 has a revision index of -03, thus older, I think.Maybe that the 3.1 version is the one of the 11302A? Many things let me think so, for example I saw a photo of a 1302 with a label "Updated to 11302A".

author: squadchannel
author_rank: Frequent Contributor
timestamp: November 28, 2024, 09:37:09 am
content: ROM images listed as 11302 "A" on TekWiki is revision -05.the photo shows "-06", so I guess the ROM in the photo is from 11302 "A" based on the revision. (guess.)backup that ROM image and write the -03 revision to it, it might change something.for more information, you may want to ask in the TekScopes forum.

author: Gianni
author_rank: Contributor
timestamp: November 28, 2024, 09:39:24 am
content: Thnks for answering, but nobody answered on Tek forum.Have you some experience about this oscilloscope?

author: squadchannel
author_rank: Frequent Contributor
timestamp: November 28, 2024, 09:45:04 am
content: No, I have no experience at all.There must be someone more professional.

author: Gianni
author_rank: Contributor
timestamp: November 28, 2024, 10:07:14 am
content: thanks anyway!
BSIDE 09 and 07, 2ch handheld DSO+DMM, claimed 50/25MHz (August 2024) - Page 1
Forum section: electronics / testgear

author: tunk
author_rank: Super Contributor
timestamp: August 01, 2024, 02:18:31 pm
content: Two new models, BSIDE 09 and 07:- claimed 50MHz (07: 25MHz)- sampling rate 250MSps (07: 208MSps)- dual channel- 20mV-10V/div- 100ns-20s/div- 4" screen, portrait, 480*320 pixels- size 217*85*36mm, weight 384g- DMM 6000 count- signal generator, 7 curve types, 2MHz- current price a bit below US$80https://www.aliexpress.com/item/1005007307834964.html

author: RAPo
author_rank: Super Contributor
timestamp: August 01, 2024, 02:27:01 pm
content: I've ordered the O9. It should be in later this week.

author: tunk
author_rank: Super Contributor
timestamp: August 01, 2024, 02:55:20 pm
content: Just found this video by 12voltvids released two weeks ago:https://youtu.be/NqCQ6o-D0ro

author: RAPo
author_rank: Super Contributor
timestamp: August 03, 2024, 12:28:31 pm
content: The O9 is in.Look&feel/leads/case: very niceDMM: nothing really bad, nothing really goodFG: This is not good. The amplitude is always positive, although the drawing of the selected waveform suggests otherwise. If you set a frequency of 0Hz in a sine wave, it will, in fact, switch to a high frequency. You cannot use FG and an Oscilloscope together.Oscilloscope: cumbersome workings: In OSC mode, you see a menu called Cursor/Measure, but you must "open" this functionality in the channel menu before anything happens. Auto mode is really slow and often misses the signal. The screen can only be saved as .bmp, with no waveform saving.More tests to follow but for now the Zoyi-703 is much better.Quote from: RAPo on August 01, 2024, 02:27:01 pm

author: wilfred
author_rank: Super Contributor
timestamp: November 28, 2024, 01:15:48 am
content: I was looking around for a few days and saw this one on AliX almost by accident. I saw the 12voltvids YT review but there isn't much else to be found. And then found my way back here to see if there was any discussion on it. I did see a Bside branded 702S which was strange.I like the form factor of this scope and the silicone shield it has. I want it for working on the car and the vertical aspect and not being slippery hard plastic might make tucking it into position easier. No stand is less of an issue.I liked the review of the Bside 01 linked in this threadhttps://www.eevblog.com/forum/testgear/new-handheld-scopedmm-bside-01-1ch-10mhz48msps-(nov-2023)/msg5490670/#msg5490670Is there something similar for the Bside 09/07?There are always oddities you may not find in reviews. But I'm also tempted by the touchscreen 02 version.Give me some things to help decide. Please.
My Philips PM3050 Oscilloscope is giving  wrong frequency from cal output. Why? - Page 1
Forum section: electronics / testgear

author: Tulpar
author_rank: Newbie
timestamp: November 26, 2024, 09:19:01 pm
content: My Philips / Fluke PM3050 Oscilloscope is giving the wrong frequency value from the Cal output. Does anyone know why?The user manual says that the calibration output should be 1.2V (p-p) 2kHz. When I measure, I see a value of approximately 0.57 ms = 1.75 kHz. I also tested with another oscillator and the oscilloscope can measure 2 kHz as it should. Does anyone have any ideas on how to fix the calibration output or what the problem is?

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: November 26, 2024, 11:04:05 pm
content: The Cal output is really just to use as probe calibration. They are used to calibrate the probes for best square wave. Yours is off more than I would hope for but most of them are not accurate as freq standard, they are usually off quite a bit. The voltage is usually pretty good but although scopes are good volt meters they are not excellent volt meters,

author: Tulpar
author_rank: Newbie
timestamp: November 27, 2024, 12:18:27 pm
content: I thought that the calibration output would give an output at the frequency written in the user manual. The square form of the wave seems to be correct, I guess there is no problem then. Thank you for your help.

author: tggzzz
author_rank: Super Contributor
timestamp: November 27, 2024, 12:29:07 pm
content: The cal out signal would be just as effective at 1kHz or 5kHz. Its sole purpose is to enable you to tweak the LF response of *10 "high" impedance probes.
HP8903B and Pete Millett Software PCI GPIB Win 7 Pro 64 (Solved) - Page 1
Forum section: electronics / testgear

author: Johnny10
author_rank: Frequent Contributor
timestamp: January 20, 2017, 04:41:40 am
content: I just purchased a National Instruments PCI-GPIB card and am trying to install Pete Millett's software for the HP8903.I wonder if anyone has good step by step instructions that they have had success with?64bit Win 7 Pro, National Instruments PCI-GPIB 183617G-01, HP 8903B.There is a lot of information for earlier Operating systems and USB devices.But I am having no luck in my method of installation.I continually receive an 801 Driver not found error.

author: Johnny10
author_rank: Frequent Contributor
timestamp: January 22, 2017, 03:10:51 am
content: OK, Problem solved.Deleted the found instrument, created a new instrument renamed to Audio Analyzer, Problem solved.

author: andreal1967
author_rank: Contributor
timestamp: November 27, 2024, 12:06:36 pm
content: is the software compatible with the national USB gpib interface?
Rigol Ultra Scope Issue - Page 1
Forum section: electronics / testgear

author: kudagaci
author_rank: Newbie
timestamp: November 28, 2024, 03:14:05 pm
content: Hey everyone,I'm able to use Ultra Sigma including print screen function with an USB connection. But whenever I try to start Ultra Scope, it appears on task manager for a while and then disappears with a Timeout error in Ultra Sigma. Even I try to start Ultra Scope alone with offline mode same thing happends.I'm using a Windows 11 PC and tried all compatibility modes, uninstalled/reinstalled NI VISA, Ultra Sigma, Ultra Scope but that didn't change anything at all, stopped antivirus before starting application but no joy.Anyone has a suggestion? Ty!

author: _Wim_
author_rank: Super Contributor
timestamp: November 28, 2024, 07:43:49 pm
content: You can use thishttps://www.eevblog.com/forum/testgear/rigol-screen-capture-vcl-windows-application/instead.The ultra scope software is very buggy

author: kudagaci
author_rank: Newbie
timestamp: November 28, 2024, 07:56:14 pm
content: Thanks. I'm already able to take a screenshot via Ultra Sigma. The device itself is visible in both NI-MAX and Ultra Sigma/Ultra Scope bundle. To sum up, only issue is Ultra Scope does not continue to the scope interface even via offline mode. Somehow the app itself does not continue and closes itself after timeout. It's probably something compatibility/video driver/OS related issue but I'm out of solutions.