hybridfree/eevblog-posts huggingface dataset:
Janatek Annie-USB Logic Analyzer Software - Page 1
Forum section: electronics / testgear

author: newex
author_rank: Contributor
timestamp: March 02, 2018, 07:42:19 pm
content: hi,I received a gift Janatek Annie-USB, but unfortunately the CD with the program is lost.I know that this is old device and it is not compatible with the new windows, but I would like to try using it.Please share the program who has this device. I will be very grateful.
RESET MHS5200A's counter from the panel? - Page 1
Forum section: electronics / testgear

author: GerardWassink
author_rank: Contributor
timestamp: August 01, 2017, 07:20:38 am
content: Hi guys,Has anyone figured out a way to RESET the counter (MSR-MODE:COUNTR) on the MHS 5200A please?Kind regards,Gerard

author: GerardWassink
author_rank: Contributor
timestamp: August 03, 2017, 05:47:15 am
content: bump...

author: diyfan
author_rank: Newbie
timestamp: March 02, 2018, 01:49:37 pm
content: If you are stil there:arrow to the left means reset or start

author: GerardWassink
author_rank: Contributor
timestamp: March 02, 2018, 03:27:22 pm
content: Thanks dude, that was it!Where did you find this info? It's not in the standard manual....Gerard

author: diyfan
author_rank: Newbie
timestamp: March 02, 2018, 04:13:44 pm
content: try and error. but there is a better manual found in a forum

author: GerardWassink
author_rank: Contributor
timestamp: March 02, 2018, 05:43:43 pm
content: That's the manual I was referring to. No reset to be found in there.Anyway, glad you found it dude!Gerard
Datron 1062 MT-5, different digital pcb? - Page 1
Forum section: electronics / testgear

author: gearshredder
author_rank: Contributor
timestamp: March 04, 2018, 01:53:59 pm
content: I just repaired this datron 1062 mt-5 and was attempting to adjust the 5v rail according to the manual but by touching TP28, it reboots lol. This digital pcb is different than all other manuals I can find. Anyone know more about it? Is this part of the MT-5 package? I've since just found 5v elsewhere, just trying to learn more about this.
HP 5340A Sampler Voltages - Page 1
Forum section: electronics / testgear

author: ezalys
author_rank: Frequent Contributor
timestamp: March 01, 2018, 05:45:29 am
content: Hey all!Is there anyone out there with a 5340A frequency counter that can measure some voltages for me? There's a unit inside on the pre-amp assembly #1 and another on the pre-amp assembly #2 that takes +5 volts and -5 volts that generates the sampling pulses, called 5088-7005. I have one on my bench and I really don't want to blow it up, can't manage to open it, can't find any pictures on the web of how it's hooked up properly, and it has absolutely no labels on it. I'd really appreciate it if someone could figure out which terminal is the +5 and which is the -5 with a multimeter... or perhaps I've missed something in the manual. All I know from a bit of googling is that one wire is color coded red/white/black and can see what terminal it goes to, but there's no table (that I've found) that says what voltage this wire corresponds to. Maybe this is a standard HP color coding. Any ideas, folks? Thanks for checkin!

author: rob.manderson
author_rank: Regular Contributor
timestamp: March 01, 2018, 12:43:21 pm
content: HP used the resistor color code for hookup wiring. You read it as 1st digit -> body color, 2nd digit -> thicker stripe, 3rd digit -> thinner stripe. (And if the hookup wire has no stripes then you read it as a single digit, one stripe as two digits etc). Each of those codes corresponds to the numbering on the circuit diagrams. In your example, let's assume you've listed the colors as body/thick/thin. That reads as 290. So look for a connection (going to another module) labelled 290. That's it.

author: ezalys
author_rank: Frequent Contributor
timestamp: March 01, 2018, 02:29:38 pm
content: The plus and minus five volt rails are only mentioned as such in the manual. There doesn’t seem to be any associated color coding or numbering. They mention the +5 rail as red/white but that might be a different five volt rail, as the wires going to the unit seem to be red black white and purple something something... maybe.

author: Orange
author_rank: Frequent Contributor
timestamp: March 01, 2018, 04:04:25 pm
content: I just opened one of mine, this is from an HP5340A (LED version)Red/Black = + 5VPurple/Gray = -5V

author: Orange
author_rank: Frequent Contributor
timestamp: March 02, 2018, 08:05:31 am
content: So whats up ezalys ?

author: ezalys
author_rank: Frequent Contributor
timestamp: March 02, 2018, 02:25:13 pm
content: Ahhh you're the best! Thank you so much. This is exactly what I was looking for.
Rohde & Schwarz disappointed me today - Page 1
Forum section: electronics / testgear

author: hscade
author_rank: Contributor
timestamp: February 27, 2018, 09:03:51 pm
content: Today at the embedded World fair in Nuremberg (Ger):- I left all other booths behind and went straight to the R&S booth.- After some knob porn (oohh this indents) on the RTB,RTM,RTE,RTO,RTAI've seen a RTC series (was at least new to me)- Spec. and price good, but the screensize is6.5"VGA color display even for education way to to small.https://www.rohde-schwarz.com/us/product/rtc1000-productstartpage_63493-515585.html

author: CrazyTiger
author_rank: Regular Contributor
timestamp: February 28, 2018, 10:49:51 am
content: I think R&S is reusing the casing of HMO1002/1202, hence the screen size. R&S states this is the replacement model for HMO1002.1202 model. A quick glance through the datasheet the RTC does not have 50 ohms input as compared to its HMO1202.The component tester feature is still there, but I wish they can make a variable output voltage option for it,instead of fixed 10V open circuit.

author: robert_
author_rank: Regular Contributor
timestamp: March 01, 2018, 08:19:48 pm
content: Different kind of disappointment:Recieved 3 RTH1004s, and one is DOA and doesnt boot. Not the sort of unboxing experience you expect from R&S. Sure it will be exchanged, but still.
Keithley 2001 logging by serial or GPIB - Page 1
Forum section: electronics / testgear

author: eurofox
author_rank: Unknown
timestamp: March 01, 2018, 09:54:03 am
content: Is there a way to simply collect data from the instrument and get it in Excel without using Labview or any software that is free?Thanks for sharing your experienceeurofox

author: CrazyTiger
author_rank: Regular Contributor
timestamp: March 01, 2018, 03:16:12 pm
content: The easiest solution is to use excel marco and serial. Have a look at the link below. It is using Agilent I/O, to handle the drivers, but its a nice tutorial.
Tektronix 485 budget/second hand probes? - Page 1
Forum section: electronics / testgear

author: grayduster
author_rank: Newbie
timestamp: February 28, 2018, 02:06:21 pm
content: Hi,Having picked up a nice second hand Tek 485 350MHz scope (unfortunately without the probes), i'm now wondering which Tek probes would be good replacements - it seems the original models are just a tad rare!Originals (as recommended in the manual) are P6056, P6057, P6053A and the P6201 FET probe:I can obviously just grab some generiprobes from Ebay like (https://www.ebay.co.uk/itm/4-Four-New-100MHZ-Oscilloscope-clip-probes-for-HP-Tektronix-Hitachi/161074468643?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649), but thought I'd ask people's recommendations (particularly if you have a Tek 485 sitting around!).Thanks for reading!

author: tggzzz
author_rank: Super Contributor
timestamp: February 28, 2018, 03:04:46 pm
content: 485s are indeed nice scopes, but you do need good probes - and good probing technique.You will note your image shows there are three broadclassesof probes in your image: FET, "low" impedance Z0 resistive divider probes, and traditional "high" impedance *10 probes. It is worth understanding the characteristics of each class, and when they are applicable.Once you have decided whichclassof probe suits your applications and wallet, to afirstapproximation they are all much of a muchness.It is possible to DIY your own Z0 and FET probes, but the traditional *10 "high" impedance probes are tricky - and are alowerimpedance than "low" impedance Z0 probes!Some resources about probe theory, use, safety and DIY are athttps://entertaininghacks.wordpress.com/library-2/scope-probe-reference-material/

author: Electro Detective
author_rank: Super Contributor
timestamp: March 01, 2018, 12:00:09 am
content: Just a thought, if you don't need the Teks full 350mhz bandwidth just yet, and want to jump on board and use the scope,some of the 100, 200 and 300mhz DSO probes that work with the Rigol, Siglents etc go pretty cheap on EbayYou can always flog them off later once some Tek probes come your way
Symmetry issue with function gen EZ/Goldstar FG-8002 - Page 1
Forum section: electronics / testgear

author: rodcastler
author_rank: Regular Contributor
timestamp: February 26, 2018, 01:21:45 am
content: Hi,My FG-8002 analog function gen (AKA GoldStar FG-8002) has a symmetry function that has the desired effect on symmetry however the knob also adjusts frequency, undesirably and quite substantially.I would expect for the knob to adjust duty cycle, while keeping the previously set frequency steady.I wonder if this is a design failure of this model or something broken that I should be able to fix.

author: rodcastler
author_rank: Regular Contributor
timestamp: February 28, 2018, 04:47:41 pm
content: I found the attached schematic for this unit.I suspect that something fishy could be going on with U5 or U4, where the two (freq and symmetry) appear to mix.Any thoughts on where should I begin? and most importantly, do anybody else experience the same issue with this unit? Like I said, I'm not sure if it is working per design...
Tektronix 7854 O'scope plugin concept - Page 1
Forum section: electronics / testgear

author: tkamiya
author_rank: Super Contributor
timestamp: February 28, 2018, 10:53:39 pm
content: Hi,I have a new-to-me Tektronix 7854 scope. As pretty much everybody knows, these will take just about any 7000 series plugins for verticals and horizontal time-base. There are 4 plugin slots on this model.I can understand why someone may want two or more vertical plugins. But why more than one time-base? Currently, I have 7B85 delaying time-base. Why would I want something else? (I know this one does not do x-y) Also, the mainframe distinguishes slot A as delaying time base (only?). What's so special about delaying? (I know what it means)I am pretty sure there IS a good reason for each of these features. I just would like to know what they are....

author: David Hess
author_rank: Super Contributor
timestamp: March 01, 2018, 03:00:15 am
content: Two separate timebase slots is feature in the 4-bay Tektronix 7000 series mainframes.If you combined a delaying timebase in the left horizontal slot (7B85 or 7B15) and and delayed (or delaying) timebase in the right horizontal slot (7B50A, 7B80, 7B85, 7B10, 7B15, 7B92A, or 7B87), then you gain the features of a dual delaying timebase which can be used to "magnify" a trace horizontally and make better measurements in time.Or two separate timebases can be used to display the same signal at two different sweep speeds. Or different signals can be display at different sweep speeds. This is like having two oscilloscopes with the same display. If two dual delaying timebases like the 7B53A or 7B92A are installed, then it is like having two separate dual delaying timebase oscilloscopes with the same display.The extra timebase slot is also convenient for plug-ins like digital multimeters and timer/counters. This slot has access to the internal trigger signal path so timing measurements can be directly made on the displayed signal.A spectrum analyser can be installed into the center two slots to display time and frequency at the same time like with a modern mixed domain oscilloscope.In the case of the 7854, the 7B87 delayed timebase allows single shot digital storage and pretrigger storage. Usually this would be combined with a 7B85 delaying timebase in the left slot for full dual delayed timebase operation when using these storage modes.
Keysight DSO9000A - anyone hacked it with the new 6.10 software? - Page 1
Forum section: electronics / testgear

author: rhythmp
author_rank: Newbie
timestamp: February 27, 2018, 03:48:49 pm
content: My DSO9254A is on the way. Wanna see if it is hackable with the new 6.10 softwareThe license patch for 4.20 was applied to agScope.exe, which is no longer there in the new 6.10 software.Anyone can help?BTW, it seems that the MSO probe for 9000A is different from the old models. How can I get a cheap eBay/DIY one?Many thanks

author: technogeeky
author_rank: Frequent Contributor
timestamp: February 27, 2018, 04:03:53 pm
content: These seem like kind of silly questions for a $30,000 scope, but I suppose some of the fun is in the hunt.

author: Neganur
author_rank: Unknown
timestamp: February 28, 2018, 09:58:47 am
content: You probably won’t want to go through the trouble of DIY the cable and its Samtec connector.eBay sometimes has the cable for around $250Or just buy a Saleae

author: rhythmp
author_rank: Newbie
timestamp: February 28, 2018, 02:06:44 pm
content: $250 is not bad. Could you let me know the model of the cable (or even the link)?I may need to do some analog+digital timing measurement, thus MSO is still preferred.Thanks a lot!

author: Neganur
author_rank: Unknown
timestamp: February 28, 2018, 02:21:00 pm
content: I think this has the item numbers, some older infiniium use the same cable.eBay auction: #201886806323Agilent MSO Cable 54904-61615 54904-61622
aoyue int857a++ hot air station help needed. - Page 1
Forum section: electronics / testgear

author: Pandor
author_rank: Contributor
timestamp: January 10, 2018, 09:42:13 am
content: Hi,I've just bought a aoyue int857a++ station from the euro (german) supplier willtec.Now, i'm having difficulty figuring out how i'm supposed to mount the bracket/holder for the handpiece. As the unit did not come with any mounting hardware, nor are there any apperent screw holes on the left hand side of the unit...Maybe i got a bad unit from the factory?I contacted willtec, but all the do is tell me where to mount it, and send me stock pictures.If anyone with this unit could make a clear picture of how the bracket for the handpiece is mounted to the side of the unit, it would be greatly appreciated.Thanks in advance.

author: beanflying
author_rank: Super Contributor
timestamp: January 11, 2018, 12:45:47 am
content: I have the earlier 701a but it shares the same hand piece and plastic mount. Not sure about the metalwork? My base has angled holes on both sides with screws being fitted to one. The metal plate on the holder gets reversed depending on left or right mount.Mine is fitted well above bench height off the base to keep the tube off the bench.

author: Pandor
author_rank: Contributor
timestamp: February 28, 2018, 08:51:18 am
content: Thanks for the reply.I actually cross posted this, as i've noticed my post was in the wrong section of the forum, and was not able to delete it.I also have one of the older units, and that indeed has holes in the base to thread the screws for the mount into.This new metal base, has a slot, and apparently, there where supposed to be 2 nuts slotted in there to thread the mounting screws in, but they where not supplied, so I got them in the mail from willtec.https://www.eevblog.com/forum/reviews/aoyue-int857a-hot-air-station-help-needed-101900/msg1402187/#msg1402187
Identify and fix the oscilloscope probe - Page 1
Forum section: electronics / testgear

author: 17_29bis
author_rank: Regular Contributor
timestamp: February 28, 2018, 12:10:39 am
content: Hello,I would really appreciate some help in identifying the oscilloscope probe that I would like to fix. There a problem with the 1:10 switch. Sometimes it creates a short (when the switch is moved from one position to another) and then the resistance between the tip and the ground is 0. So, I would want to know 2 things: what kind of probe is this and how its body can be disassembled. Here is some pictures:

author: tautech
author_rank: Super Contributor
timestamp: February 28, 2018, 12:16:17 am
content: Try unscrewing the tip after which the sleeve behind it can slide off and then maybe all remaining slid back through the handle.

author: 17_29bis
author_rank: Regular Contributor
timestamp: February 28, 2018, 12:38:19 am
content: Quote from: tautech on February 28, 2018, 12:16:17 amOh, thanks, indeed I could unscrew the tip but nothing is moving or sliding. May be the switch itself should be removed first? I also found a text on the probe saying "Made in Germany".EDIT: looks like this is a TESTEC probe.
Rigol DS2000E - new scope couple from Rigol. - Page 1
Forum section: electronics / testgear

author: IAmBack
author_rank: Regular Contributor
timestamp: February 27, 2018, 11:29:43 pm
content: https://beyondmeasure.rigoltech.com/acton/fs/blocks/showLandingPage/a/1579/p/p-0038/t/page/fm/0/r/l-sf-contact-0004:ffdd/s/q-eea7?aoRefEmail=s-090c-1802&sid=TV2:tfAhwbt43Impossible, nobody mentioned it earlier

author: nctnico
author_rank: Super Contributor
timestamp: February 27, 2018, 11:48:54 pm
content: Only 2 channels. Meh.

author: CustomEngineerer
author_rank: Frequent Contributor
timestamp: February 27, 2018, 11:52:03 pm
content: I got the same email, but its not really new. I'm assuming they aren't really selling that well (probably because of DS1000Z), so Rigol mentions them in pretty much every advertisement they send out, still calling them new. I have seen at least 3 or 4 other threads mentioning it the last year or so. Example of one:https://www.eevblog.com/forum/testgear/rigol-ds2000e
Defective BK 2709B? - Page 1
Forum section: electronics / testgear

author: jayjr1105
author_rank: Regular Contributor
timestamp: February 10, 2018, 03:17:43 am
content: Hi all. I was excited to receive my first decent meter (B&K Precision 2709B) after owning a couple junkers that failed or were sporadic.I loved the safety features, accuracy, speed, and the wide capacitance reading range of the BK.Unfortunately mine seems to be way off when reading all kinds of caps over 100uf.It read a 830uf polymer cap @ 350uf, a 3300uf electrolytic cap at 2000uf, and a 470uf electrolytic cap around 300uf.I realize DMM's aren't super accurate with capacitance and before you tell me this is somewhat normal, let it be known that I have a $20 amazon meter and a UEI meter reading these caps almost dead on.I really wanted to like this meter, the probes are amazing compared to my previous ones. Even the build quality is not as bad as some made it out to be.Should I simply be requesting a replacement asap from the seller? I bought it at testequipmentdepot.com**EDIT** Tinkering around with it more, I noticed it's much more reliable if autorange is enabled when in capacitance mode. Also, it hates if I use jumper cables in addition to the leads. If I just use the leads by themselves on the caps, it's a ton better. Not sure what I think about this whole process yet.

author: jayjr1105
author_rank: Regular Contributor
timestamp: February 12, 2018, 02:06:43 am
content: Made a video of the flaw guys. What do you think?https://youtu.be/tQsrcrnM32w

author: jayjr1105
author_rank: Regular Contributor
timestamp: February 27, 2018, 09:42:31 pm
content: I know I didn't get any feedback on this but I wanted to report back on a resolution. I sent the meter away to B&K and they looked at it for a week. They were able to reproduce the issue with the capacitors I sent along and with another meter as well. Apparently the fix is to simply use shorter leads. The stock 2709B probes are 4-5ft long if I remember correctly but the tech working on it said the issue went away when he used 2-3 ft probes. They are going to send me a fresh pair of 24"-36" leads. I guess this is acceptable, especially since I purchased a nice LCR meter in the meantime.
Probes for LeCroy LT342 500MHz - Page 1
Forum section: electronics / testgear

author: MrPuhur
author_rank: Newbie
timestamp: February 27, 2018, 03:19:31 pm
content: I recently bought a LeCroy LT342 500MHz, 500MS/s 2 channel scope. It came without probes, so I need to get some. Note that I don't have that much experience with any scopes.The original probes, LeCroy PP006, are rather expensive. I don't think I'll be needing 500MHz probes either, since the scope only has a 500MS/s ADC and I'm not planning on looking at repetitive high-frequency signals with it, rather digital comms and other transients. Tell me if this is a stupid idea.If not, my plan is getting 3rd party probes for it, around 250MHz. You never know though, so the higher the bandwidth, the better.I've found a few myself:http://uk.farnell.com/elditest/ge2511/probe-passive-10-1-250mhz-600v/dp/2474798http://uk.farnell.com/elditest/ge2521/probe-passive-1-1-10-1-250mhz/dp/2474799http://uk.farnell.com/pico-technology/ta131/probe-passive-250mhz-picoscope/dp/2392852(I've given UK links so it'd be readable to everyone)Are these any good and do they look like they'd work on the scope? Or should I get used, but better spec'd ones?

author: Stray Electron
author_rank: Super Contributor
timestamp: February 27, 2018, 06:11:22 pm
content: Second hand LeCroy PP-005 or PP-006 probes aren't that expensive on E-bay and they're NICE probes. That's what I use. But you have to shop around to find ones that include the ground clip or other accessories if you need them.How do you like your LT scope? I've been thinking of buying one to replace my failed LC 354.
Vector-Vod ISO-V-AC III WP-32 Variable Isolation Transformer - Page 1
Forum section: electronics / testgear

author: GAD
author_rank: Regular Contributor
timestamp: January 16, 2016, 07:06:07 am
content: I scored this thing for a good price online and would love some input.First the good - it seems to work!The Variac portion works great, and from what I can tell, the mains are indeed isolated as desired. Here are some gut shots:My concern is that the three-prong outlets on the front are grounded to the chassis. I've read countless contradictory articles about why this is good vs. bad, but I bought it for isolation of DUT for my scope, so I'm thinking for that purpose it may not be the right solution.Where I'm getting a bit confused is with these readings:Both hot and neutral to ground are open until it's turned on, after which the meter will register 8M resistance.Are these readings normal given that the hot/neutral are isolated but the ground/chassis is not? The concept kind of hurts my head and it's been a long day.

author: GAD
author_rank: Regular Contributor
timestamp: January 16, 2016, 07:10:54 am
content: Oh, and if anyone has a manual I'd love to get a copy!

author: GAD
author_rank: Regular Contributor
timestamp: January 18, 2016, 05:52:18 am
content: Bump

author: TheSteve
author_rank: Unknown
timestamp: January 18, 2016, 06:06:29 am
content: Never seen the unit before but I see it measures leakage of some sort, so that may explain the 8 meg ohms to the earth connection. It does indeed have an isolation transformer and a variac from the looks of it. Being the earth pins are all connected it wouldn't give you any isolation if you plugged a three pronged device into the output. You will need to a quick "mod" or two for it to fully isolated to meet your needs.

author: Docholiday
author_rank: Regular Contributor
timestamp: July 17, 2017, 11:35:41 pm
content: did you ever get a manualmfor it?

author: Charlesjohnson29
author_rank: Newbie
timestamp: December 24, 2017, 12:55:27 am
content: GADYou pasted some great pictures of the Vector WP32 power supply.I have one that is missing the 2 integrated circuits on the Right Hand side of the supply.If possible could you supply the part no. of these two chips.I know this is asking a lot but I would like to restore it.Thanks Charles

author: Audiocluster
author_rank: Newbie
timestamp: February 28, 2018, 04:52:01 am
content: Did anyone say MANUAL ??Ask and you shall receive....eventually.Thanks to Mars at Antique Radioshttp://antiqueradios.com/forums/viewtopic.php?f=8&t=336335Send me a PM and I'll either email or send you gooDriv link (if I can get it to work) for "A nice clean PDF" of manual. Thanks again ........ Mr M !!!Charles

author: GAD
author_rank: Regular Contributor
timestamp: February 28, 2018, 01:22:27 pm
content: This fabulous - thanks!
Waveform capture on Rigol DS1054Z and playback on Rigol DG1022Z - Page 1
Forum section: electronics / testgear

author: mtolesen
author_rank: Contributor
timestamp: March 13, 2017, 10:23:45 am
content: Hello,Does any one know if i can capture a waveform on my Rigol DS1054Z, and then transfer it (direct via cable or via USB stick) to a Rigol 1022Z waveform generator, and play it back?I do know that Rigol has a application note how to do this, but that is not with this combination of instruments.

author: sainter
author_rank: Regular Contributor
timestamp: March 13, 2017, 01:07:37 pm
content: You connect your dg1022z front usb to your ds1054z back usb conncetion, after that you triger on your waveform and go to dg1022z and select load from memory, and ds1054z will be one of the source.You can read more in page 131 (2-81) of user guide.

author: mtolesen
author_rank: Contributor
timestamp: March 13, 2017, 04:32:27 pm
content: Hello sainter,Thank you very much, i will see how it works.

author: Vtech
author_rank: Regular Contributor
timestamp: December 11, 2017, 01:24:24 pm
content: Resurrecting this thread.I've tried this combination on my MSO1104Z-S (most recent firmware 00.04.04.03.02) and DG1022Z (also most recent firmware 00.01.12). Scope is detected by the generator and is available as sort of "pendrive" in Store menu. Active scope channel are visible as files in this menu but when I try loading this "file" error message appears "There is no file at this storage location! the operation is forbidden." (sic)I can't make it work. What a pity.

author: H.O
author_rank: Frequent Contributor
timestamp: December 11, 2017, 07:41:42 pm
content: Have you tried to single trigger or put the scope in stop before accessing the files from the function generator?

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: December 17, 2017, 11:25:18 pm
content: Quote from: Vtech on December 11, 2017, 01:24:24 pmCheck out this videoThis is the killer feature to take a rigol function gen if you have a rigol scopeInviato dal mio SM-G920F utilizzando Tapatalk

author: Vtech
author_rank: Regular Contributor
timestamp: February 27, 2018, 02:16:21 pm
content: Hi,I've tried again and still no luck. I've followed the exact same procedure as in the video (including storing the waveform as reference) and I keep getting the same message "There is no file at this storage location! the operation is forbidden."Looks like there is a bug in recent firmware in the scope or in the gen. I have access to DG4000 series generator, DS2000 and DS4000 series scopes. I have to try different combinations to find out which one is working.This is really nice feature to have so I'm not giving up yet (if only I had enough time...)

author: 2N3055
author_rank: Super Contributor
timestamp: February 27, 2018, 03:15:50 pm
content: I know for certain that DS1074Z and DG1032Z work perfectly via USB connection. Don't know about other combinations.Regards,Sinisa
Tektronix TDS3000C - How to clear error log? - Page 1
Forum section: electronics / testgear

author: ArcticGeek
author_rank: Regular Contributor
timestamp: March 16, 2016, 01:44:23 pm
content: Hi folks,I have a TDS3014C that I recently acquired from a nearby university that had a calibration error - the error message indicated that it needed a factory cal. After a bit of struggling, I was finally able to get the unit to successfully pass the calibration routines and the unit now works great.The only remaining issue is the error log is full of errors due to the calibration being out of whack, and I would like to clear those errors. The older TDS5XX/6XX/7XX scopes required a GPIB command "err clear" to clear the error log, but that doesn't work on this scope.Does anyone know how to clear the error log on the TDS3000 series of scopes? I know this same question has been asked on this forum and other forums several years ago with no answer, just wondering if anybody has learned anything since then.

author: picburner
author_rank: Frequent Contributor
timestamp: March 16, 2016, 02:28:33 pm
content: Perhaps here there might be an explanation of the problem:http://www.hakanh.com/dl/TDSErrLog.htm

author: ArcticGeek
author_rank: Regular Contributor
timestamp: March 16, 2016, 03:33:28 pm
content: Yea,I had seen that website and the explanation for the TDS3000 and TDS3000B series, but it doesn't really address the TDS3000C series. The website indicates that in order to use that utility, you need to use firmware level 3.39 (or earlier). My TDS3000C has firmware level 4.31, and I'm not sure if 3.39 firmware would work or not. The earliest firmware I've seen on a TDS3000C is level 4.21, and I'm afraid level 3.39 might crater on the "C" series.

author: sixtimesseven
author_rank: Frequent Contributor
timestamp: February 26, 2018, 02:23:17 pm
content: Quote from: ArcticGeek on March 16, 2016, 03:33:28 pmHave you ever tried to get the hack on to your 3014C?I'm considering buying one but I'm not sure yet. The hack would be nice....
Possible to get an RF shock from a TG? - Page 1
Forum section: electronics / testgear

author: cncjerry
author_rank: Unknown
timestamp: March 02, 2018, 05:23:26 am
content: Twice today when unscrewing some coax from my reflection bridge, I got what felt like a nasty little rf burn under my wedding ring. The coax is hooked to an antenna outside and I was tracing from 1 - 30Mhz. If it isn't the TG, I guess maybe static on the antenna? It wasn't a shock like you would get in sox across a floor when touching a radiator, It was more like a circular burn feeling under my ring. Gets my attention, no harm done. Possible? I've had RF burns from my 2KW amp, this felt like a low-level version. Hands were damp both times.If not the TG, then I have to figure a way to ground that antenna before I blow my SA front end.Thoughts?Jerry

author: Performa01
author_rank: Super Contributor
timestamp: March 02, 2018, 06:15:47 am
content: I think the "RF burn" is coming from sheath waves and is proportional to RF powerandSWR. I have experienced the effect at power levels <30W for SWR <1:1.5 and would expect the SWR to get much worse if some antenna is swept over a wide range.On the other hand, a TG usually outputs <+10dBm and does not have any resonant matching network at its output. So I have to doubt it could cause a "burn", no matter how bad the SWR gets.To be sure, connect your antenna to a high impedance scope input and observe the voltage levels, also for DC.

author: cncjerry
author_rank: Unknown
timestamp: March 02, 2018, 06:45:17 am
content: Not really a burn, moremmlike I have insulation under my wedding ring. Then It goes away. But it does get my attention.
Overmold and Bumper Material Used on Test Equipment - Page 1
Forum section: electronics / testgear

author: Mezzer266
author_rank: Contributor
timestamp: February 26, 2018, 07:26:28 pm
content: Hey Everyone,Does anyone know what the material used for overmolds and bumpers on equipment is? I'm referring to the yellow on the Flukes, Orange on Keysight DMM, grey bumpers on Agilent benchtop units, blue on bkprecsion, etc...Thanks,Mezz

author: Gyro
author_rank: Super Contributor
timestamp: February 26, 2018, 07:29:36 pm
content: Polyurethane?

author: Mezzer266
author_rank: Contributor
timestamp: February 26, 2018, 07:36:36 pm
content: Yeah, I'm thinking it could be polyurethane too. I don't have any experience with that first hand where I also know that it is polyurethane so I'm not certain. I don't think it's rubber though cause it seems too stiff.Mezz

author: robert_
author_rank: Regular Contributor
timestamp: February 26, 2018, 08:13:57 pm
content: Some type of thermoplastic elastomer, most likely SBS or SEBS.Chinesium might be soft PVC, as some of these stink and feel like its 50%wt phthalate based plasticiser. In which case, i would really avoid touching it.
Teardown & Analysis of a Lambda LLS9060 0-60v 14A Power Supply - Page 1
Forum section: electronics / testgear

author: salvagedcircuitry
author_rank: Regular Contributor
timestamp: February 26, 2018, 03:21:26 pm
content: Hi Everybody! I am in the middle of repairing my Lambda LLS 9060 variable switchmode power supply, and I decided to film a quick teardown and analysis video of this peculiar power supply. In this video I disassemble the power supply, analyze the mechanical and electrical build quality, and compare it to a 3rd party linear power supply. There will be a part 2 to this video which demonstrates the actual repair process.Let me know what you think!Thanks a bunch!
HP-6213A Power Supply Service Manual Needed - Page 1
Forum section: electronics / testgear

author: radiotek
author_rank: Contributor
timestamp: November 29, 2017, 03:13:52 am
content: I need a service manual for my HP-6213A.variable 0 to 12 volt power supply.Your help is greatly appreciated.

author: radiotek
author_rank: Contributor
timestamp: November 29, 2017, 03:35:48 am
content: HiI did some more Google seaching and I found the service manual.

author: Old Printer
author_rank: Frequent Contributor
timestamp: February 23, 2018, 03:52:18 pm
content: Quote from: radiotek on November 29, 2017, 03:35:48 amA link would be handy. Thanks

author: alm
author_rank: Super Contributor
timestamp: February 25, 2018, 05:01:10 pm
content: In my opinion it is very frustrating if someone posts about a problem, and later posts that the problem is resolved without mentioning the solution. In this case, I believe this isthe HP 6213A service manual.
K2587 • Tiny 3-State PIC Logic Probe Kit - Red LED always on - Page 1
Forum section: electronics / testgear

author: Mamejay
author_rank: Contributor
timestamp: February 25, 2018, 05:39:13 am
content: Hey guys,Was in desperate need of a logic probe and could only get a K2587 • Tiny 3-State PIC Logic Probe Kit locally in Melbourne from AltronicsI have assembled it and checked it a few times. Currently when connected to a test board I get the red LED on all the time. When connected to a low pin the green led shows only which is correct and when connected to a pin with activity all red green and orange led which is correct.Only thing is I cannot see when a point is high as the red LED is on all the time.Has anyone else made one of these before? The red LED is connected to GP2 (Pin 4) of the PIC chip.Not sure if I have missed something but if someone can help that would be great
Tektronix 2445B SN:B010xxxx - Page 1
Forum section: electronics / testgear

author: ahsuilim
author_rank: Newbie
timestamp: February 26, 2018, 02:11:22 pm
content: Hi,This is my first post here. Just bought a used 2445B early model SN:B010xxxx, upon power up I saw test 04 failure 10. Seem like a CAL NVSRAM problem. Are there any NVSRAM image for the 2445B early model available? I know there is NVSRAM image for later model > SN:B050xxxxThanks for your help.

author: Zucca
author_rank: Unknown
timestamp: February 26, 2018, 02:19:01 pm
content: Hi and welcome,I think your post must be moved on the repair section.https://www.eevblog.com/forum/repair/Z
HP3456a service notes, for owners info!. - Page 1
Forum section: electronics / testgear

author: lowimpedance
author_rank: Super Contributor
timestamp: September 10, 2012, 12:44:18 am
content: Just repaired a number of 3456a's at work, (yes a few still being used!). Although most have been replaced with the 3458.Any way I came across some HP service notes tucked away in one of the old handbooks, so I have attached them here for the reference of owners of these Voltmeters.They may be of some use, or you may have them already!. There are probably more but I cannot find them on line, (found reference to number 16 in a bench brief, but not the actual note).Also I took a few pictures and attach those as well.Quick note to those owners that might have "orange sleeved' jacketed electrolytic cap's in the power supply PCB, even if your meter passes all self tests, I would recommend you replace them asap. While checking the meters at work I had one unit pass its tests but inspection of the PS PCB showed corrosion at the lead of one of the orange electro's.CheersLowZ

author: saturation
author_rank: Super Contributor
timestamp: September 10, 2012, 03:32:08 pm
content: Thanks a bunch for this, lowZ, they're great!

author: MetraCollector
author_rank: Regular Contributor
timestamp: September 10, 2012, 09:21:53 pm
content: This voltmeter is a piece of art !I would very like to own some. Is there any possibility to get this machine in middle Europe for reasonable price ?I think this will be very educational for me and would be honour for me owning this device

author: quantom_B
author_rank: Newbie
timestamp: September 27, 2012, 10:17:06 pm
content: Have 3456a here with downed power supply. dont get 5V or 33V, but all other voltages look good. Have a pdf of scanned Operating and Service Manual (only one I can find on net), but it only shows schematic of p.s., but not the table for part numbers of this board -it lists the board as A10, Inguard Power Supply, 03456-66510. I find this odd as all the other boards are shown and all have a table with part numbers. Wondering if someone skipped a page while scanning. Do you by chance have documentation that shows these part numbers?Thanks

author: lowimpedance
author_rank: Super Contributor
timestamp: September 28, 2012, 05:18:25 am
content: Are you referring to the replaceable parts list or the table near the schematic and pcb picture??.Just checked a manual (a real one, not a PDF!) and there is no table at the schematic page for the PS A10U1 = 7805U2 = 7815U3 = 7915U4 = lm337complex cct here!!.Check C5, most likely stuffed. And since your 33v rail is referred to the 5v it will likely be fixed too (unless c7 is dry).(dont forget to check your other 'electro's. ' , better still just replace the lot.).LowZ

author: quantom_B
author_rank: Newbie
timestamp: September 28, 2012, 03:11:43 pm
content: Many thanks for the great info LowZ !!qB

author: don.r
author_rank: Frequent Contributor
timestamp: February 24, 2018, 11:50:33 pm
content: lowimpedance,You don't happen to have a copy of service note 3456A-12 ... aka the fanless mod?
Advantest R4131D LCD display - Page 1
Forum section: electronics / testgear

author: cizeta59
author_rank: Newbie
timestamp: February 24, 2018, 12:01:21 am
content: Hello everyone. Removed old R4131D tube display and replaced with 6-inch color LCD screen taken from Amstrad T6 TV with video input. Even so, by connecting to the rear video output of the analyzer, you can use the new monitor. If instead you want to improve the image definition and use the colors, you must enter the RGB signal built with a diode matrix of your choice, picking up the different information on the screen (diodes d1-d6 on section LOGIC BLR-015114 that form the full video signal sent to the old monitor), on pins 14 - 15 - 16 (RGB) of LA76810 on the TV Amstrad T6, raising the pin 17 (Blanking-in) to + 5V. Attached photos of the final realization of the operation and example scheme of the LA76810 in the circuit.Note: the video signal must always be connected to use the synchronisms.
Kenwood PS 36-30 Powersupply - Page 1
Forum section: electronics / testgear

author: lutzee
author_rank: Newbie
timestamp: February 26, 2018, 10:50:32 pm
content: Hi all,Its been a long while since I last had time to fuel my electronics interest, the last time was when I was taking my Electronics A-Level in 2011-2012 but now I have more time.I managed to pick up this Kenwood PS 36-30 Switch mode powersupply on ebay for ~£27 last week. It was advertised as powers on but not tested but the good news is that it works!Manual can be found here for the full range of supplieshttp://www.cieri.net/Documenti/Kenwood/Test%20Instruments%20-%20User%20Manuals/PS60-6%20-%20Regulated%20DC%20Power%20Supply.pdfAs its been a while since I studied electronics I'm not 100% sure how good the specs of this are. Some things I can pull out though are:0-36V0-30ARipple: 100mV P-P / 15mV RMSTransient Response: 2msPower Consumption: 2600VA (Am I right to assume then this can provide the full 30A at 36V?)As it also appears to be used mainly in a rack mount environment it has full remote control options available via GP-IB, I might take a crack at using them at some point.Like Dave recommends though, it has 10 Turn pots for voltage and current adjust, Constant Voltage and Constant Current.There is some issues though, as you might see from the third image, the unit must have been dropped at some point and broke the mains power cover, before I go using this for anything major I really want to fix this somehow. Any suggestions are welcome. Same goes for finding a way to replace the missing front bezel.More photos (including internals) here:https://www.flickr.com/photos/lutzee/sets/72157693134554084

author: lowimpedance
author_rank: Super Contributor
timestamp: February 26, 2018, 11:01:49 pm
content: Interesting looking supply, little crusty, would be nice to see whats inside when you crack it open !.As for the damaged/missing plastic bits perhaps 3D printing (ABS) new ones might be the go.Assuming you have suitable software access to design new ones using the existing bits as a template.

author: lutzee
author_rank: Newbie
timestamp: February 26, 2018, 11:05:00 pm
content: Quote from: lowimpedance on February 26, 2018, 11:01:49 pmAlready opened, see the flickr link for photos!Quote from: lowimpedance on February 26, 2018, 11:01:49 pmI could probably do it, but that would be a complete learning experience and will take time. It had crossed my mind, I was just hoping for something quicker.
Tek 2440 vs 520a - Page 1
Forum section: electronics / testgear

author: the_grue
author_rank: Contributor
timestamp: February 17, 2018, 11:58:31 pm
content: Hi all!A newcomer here. I found two nice scopes at a local second-hand equipment store, but which one to take? Tek 2440 or 520a? Both are the same low price (USD $150), claimed to be in perfect working condition. Still, I am a bit worried by advice here on the forum to replace all the caps on 520a because they are known to leak, and I don't want to trust myself not screwing it up (not to mention the amount of work it would take). Which is a better and more noob-friendly scope, all things considered?

author: ahbushnell
author_rank: Frequent Contributor
timestamp: February 18, 2018, 12:10:59 am
content: Quote from: the_grue on February 17, 2018, 11:58:31 pmI don't know about a capacitor problem but I would take the 520a. $150 is a good price. Make sure it works.

author: CrazyTiger
author_rank: Regular Contributor
timestamp: February 18, 2018, 12:25:36 am
content: I would suggest go with the Tek2440 it has a 300 MHz analog bandwidth and a 50 ohm input impedance selection. Once you start buying test gear you will end up buying more so space will be a concern in near future, tek2440 is relatively smaller than tek520A. I have purchased 6 scopes in a period of two years and still looking to buy moreThe only downside of Tek2440 is those hybrid chips is extremely difficult to find and if you ever want to have a look inside the tek2440 never operate it while the cover is open, that is the easiest way to kill a Tek2440.Good Luck on your first scope

author: David Hess
author_rank: Super Contributor
timestamp: February 18, 2018, 09:14:22 pm
content: Assuming they both work, I would prefer the TDS520A despite its lower sampling rate simply for its much greater set of features. This goes double if it has the advanced math as this is one of the few examples of a DSO which can be used for transient response FFT magnitude and phase measurements.

author: the_grue
author_rank: Contributor
timestamp: February 19, 2018, 02:27:32 am
content: 2:1, 520A wins!

author: lowimpedance
author_rank: Super Contributor
timestamp: February 19, 2018, 02:42:40 am
content: Once you get it open it up and check those caps have not already started leaking. You will most certainly want to replace them and as you have found there is plenty of information out there regarding this.Don't be afraid of doing this as you will then have a capable oscilloscope without the worry that the next time you turn it on will be its last !.

author: the_grue
author_rank: Contributor
timestamp: February 23, 2018, 05:01:41 pm
content: I got the unit today, at least primary functions appear to be working on both channels.Quote from: lowimpedance on February 19, 2018, 02:42:40 amOkay, will try. Any advice on where to get the caps and which brand to order? Will cheap Chinese caps from Ali Express do?

author: the_grue
author_rank: Contributor
timestamp: February 23, 2018, 06:04:39 pm
content: Also: I found it to be very noisy. Is it worth the hassle switching the fan?
Free or open source scpi DMM graphing software? - Page 1
Forum section: electronics / testgear

author: sstepane
author_rank: Regular Contributor
timestamp: February 23, 2018, 10:00:54 am
content: Hi,I've been trying to find any decent graphing (online monitoring) software for digital multimeters, probably using scpi standard (like for agilent 34401a widely used kind).Is there anything like this?

author: TiN
author_rank: Super Contributor
timestamp: February 23, 2018, 11:01:12 am
content: Privit.You can use EZGPIB or some numerous examples with python/vxi that talk SCPI to code simple apps to log data into CSV and then use plotting software of your choice.Take a look here:https://www.eevblog.com/forum/metrology/raspberry-pi23-logging-platform-for-voltnuts/https://www.eevblog.com/forum/testgear/rf-scientific-gpib-logger-v-1-0/

author: sstepane
author_rank: Regular Contributor
timestamp: February 23, 2018, 01:08:33 pm
content: Xie xie for the info!I know that it is possible to write it yourself, but thought there should be something simple "all-in-one" for such a widely used 34401 type dmm that many manufactures include in their multimeters as standard.