hybridfree/eevblog-posts huggingface dataset:
Voltcraft VC890 multimeter vs ...... - Page 1
Forum section: electronics / testgear

author: Porto
author_rank: Contributor
timestamp: March 28, 2014, 01:38:32 am
content: Hi!Can someone compare this multimeter with a more expensive Fluke and/or Agilent? (Maybe Dave will review this in his blog?!?)E.g. how is the precision, the options on it, overall quality?I can't find much about this meter (reviews, user experiences etc), only where to buy (and that I already know)Thanks! Porto

author: PedroDaGr8
author_rank: Super Contributor
timestamp: March 28, 2014, 02:49:51 am
content: Quote from: Porto on March 28, 2014, 01:38:32 amHey Porto,Voltcraft is made by Uni-T to Voltcrafts custom specs. This isn't inherently bad because they do seem to spec the stuff well. Uni-T knows how to make decent stuff when they want (or are told to). I seem to remember hearing somewhere that Uni-T made the fluke's for the Chinese market. That being said it's not a fluke or agilent.

author: Porto
author_rank: Contributor
timestamp: March 29, 2014, 04:21:40 am
content: I have bought this DMM today and could shortly compare some readings with a calibrated Fluke 87-V and Agilent labsupply.Fluke / Voltcraft@.1v = 0.0994 / 0.0996@1v = 0.9996 / 0.9993@5v = 4.9997 / 4.9996@10v = 9.9996 / 9.9993@30v = 29.996 / 30.002These are some tight resolutions, and I guess nothing to worry about in real life; will do for me!It's a simple test but it gives me a global indication on how this $300 Voltcraft is performing to a 2-3x more expensive Fluke.Overall quality is very good, very lovely (oled) display and a quite rigid housing.What I like is that there is no lag in the short-circuit testing... beeps as soon as the poles make contact.Haven't played with it that much yet.The included Softvolt software is nice but has the tendency to disconnect the DMM at will; if there only was a (dis)connectbutton but unfortunately the only way to let the software init the DMM again was to remove the DMM out of the databaseand add it again... a bit clumsy. It's a nice feature but surely a bit buggy.All in all, I'm happy.

author: retiredcaps
author_rank: Super Contributor
timestamp: March 29, 2014, 05:06:47 am
content: Any chance of getting photos of the insides?

author: Porto
author_rank: Contributor
timestamp: March 30, 2014, 09:44:43 pm
content: Quote from: retiredcaps on March 29, 2014, 05:06:47 amI don't have pictures myself, but there is a thread here on the blog about the VC870, but with VC890 inside pictures in it.Looks pretty reliable to me but time will tell, haven't used the DMM much because of work; this week I will use it more.https://www.eevblog.com/forum/testgear/voltcraft-vc870-any-experiences/15/

author: jomaroliv
author_rank: Newbie
timestamp: June 21, 2022, 03:51:01 pm
content: Hello - I thought that the VC890 was much more recent - now I see posts from 2014 !!I'll get it tomorrow and still have doubts from all the info I could find - for AC mV values between 100 and 600mV will the 6V range work ? (resolution 0f 0.0001V according to specs)and in that case will show as 0.00600V (for ex for 600mV) ?@Porto - the comparison you did was for DC or AC Volts ?Thanks
Status on the SDM3045X relay click - Page 1
Forum section: electronics / testgear

author: nedeb
author_rank: Contributor
timestamp: June 21, 2022, 09:58:35 am
content: What's the status on the relay click issue with the SDM3045X? I mean the annoying click and ~1s delay around 2V (or 2mA for DCA measurement), see e.g.https://www.eevblog.com/forum/testgear/will-this-2v-signal-damage-my-bench-multimeter-over-time/.Summary of the situation as I understand:the click can be avoided by using the 60V (or 60mA) manual range, i.e. losing 1 digit of precision.hacking the firmware to an SDM3055X-E can help (see e.g.https://www.eevblog.com/forum/testgear/looking-for-benchtop-multimeter-cheap-but-good-enough/msg4035127/#msg4035127).Is that right? Is there still hope of a firmware fix from Siglent?Can someone confirm that hacking to SDM3055X-E will fix the click issue?

author: tautech
author_rank: Super Contributor
timestamp: June 21, 2022, 10:33:49 am
content: See here:https://www.eevblog.com/forum/testgear/siglent-sdm3045x-enough-is-enough/

author: nedeb
author_rank: Contributor
timestamp: June 21, 2022, 10:53:17 am
content: Thanks, I see that people successfully upgraded their device to SDM3055X-E but I didn't see a mention of how this affects the click issue. Does it actually solve it?

author: tautech
author_rank: Super Contributor
timestamp: June 21, 2022, 11:15:20 am
content: Quote from: nedeb on June 21, 2022, 10:53:17 amThe hack changes the manual measurement range steps in 3045X for them to match 3055 range steps instead of being in the middle of the 6V range step the 3045X is supplied with.Study the thread more and the datasheet range step differences between the 4.5 and 5.5 models.

author: nedeb
author_rank: Contributor
timestamp: June 21, 2022, 11:38:31 am
content: Thanks for your patience, I get it now
ADCMT DMM via USB help - Page 1
Forum section: electronics / testgear

author: n_haku
author_rank: Contributor
timestamp: June 09, 2022, 03:06:44 pm
content: Finally got my AD7461A and already imagine to write sofware layer to usbtmc to sync measurement with my tec oven, but got this after installing driver: (pic 1)Hey, one of the driver manual (pic 2) says I can switch between ADCMT DMM driver and USBTMC, but in my case there just no option for USBTMC, only DMM. NI VISA also see no instrument available...Maybe, by chance, anyone encountered problem like this? How I supposed to obtain data from dmm?Also, I tried to access with libusb, but got error_not_supported already at device init! Seriously, what's wrong with this driver?

author: n_haku
author_rank: Contributor
timestamp: June 18, 2022, 02:56:21 pm
content: Well, this issue solved inexpectedly: actually, with installed usb driver there are comes a dll, using which one can access adcmt equipment. But there are no almost any function documentation, except C header and simple C program. I also tried to write my own to test this dll, and it seems that using it easier than I expected. To user, dll provide a simple text in - text out interface, carring out a lot of usb api related things, one do not need even to know vid/pid, only ID, that can be set in dmm menu. Also, it seems, dll (and driver) is common to a set of ADCMT instruments.So, now one already in great anticipation to use all of those SCPI program to setup and read data?Hahahaha, no.Yes, it's no.Here was the trap: when configured as usb interface, dmm will use ADC programming language, not SCPI. Only with GPIB one can select between SCPI and ADC.Seriously, ADCMT, why spend a lot of effort to another laguage? Even in ADC mode, there some SCPI commands, like *idn?Anyway, somewhere in the internet I found quote from manual with all commands, so if one interested in automated measurements, its not that hard.Also, in attachment, a reply to *idn? and unit for lazarus gui program. If anyone interest, I'll beautify and trow entire project to some github.
CMS52 Rohde Schwarz external reference - Page 1
Forum section: electronics / testgear

author: ct2iok
author_rank: Newbie
timestamp: June 19, 2022, 09:06:26 am
content: I have a CMS52 device, and I wanted to link an external reference of 10MHz, this device has no input on the back panel to inject this reference, where can I connect this 10MHz reference and what level (dBm) should I putThe equipment has 3 vertical lines on the display, does anyone know how to fix this?Best Regards

author: CJay
author_rank: Super Contributor
timestamp: June 19, 2022, 04:20:34 pm
content: Plenty of clues about where to connect an external reference in the service manual here:http://eww.ko4bb.com/manuals/81.141.36.151/Rohde_Schwarz_CMS_52_Radiocommunication_Service_Monitor_Service_Manual.pdfAs for the LCD, good luck, it may be as simple as cleaning up a zebra strip but I doubt it on a panel that size.

author: ct2iok
author_rank: Newbie
timestamp: June 19, 2022, 10:04:04 pm
content: Thank you very much, I appreciate your contributionAfter taking a quick look at the service manual, I find an indication on page 342 and 369 referring to the X501 which is indicated as a reference, but I don't know if it will also be input, or just output.
Keysight DSO-X 2002A scope legally upgrading to latest FW - Page 1
Forum section: electronics / testgear

author: HighVoltage
author_rank: Super Contributor
timestamp: June 18, 2022, 12:55:20 pm
content: I bought a DSO-X 2002A that has a firmware v1.21 installed.If I want to upgrade to the latest version 2.65, the scope does not recognize the file on the USB drive and Keysight does not provide any earlier FW versions on their website.Does anyone know, what version I have to install first, before the upgrade to 2.65?And where to get that version?

author: gamalot
author_rank: Super Contributor
timestamp: June 18, 2022, 01:07:09 pm
content: Is this what you're looking for?https://www.keysight.com/au/en/lib/software-detail/instrument-firmware-software/installing-infiniivision-2000-xseries-oscilloscope-firmware-2014479.html

author: HighVoltage
author_rank: Super Contributor
timestamp: June 18, 2022, 01:43:36 pm
content: Thanks gamalotI now have the scope updated to v 2.65.

author: gamalot
author_rank: Super Contributor
timestamp: June 18, 2022, 01:58:04 pm
content: Quote from: HighVoltage on June 18, 2022, 01:43:36 pmIt's time to upgrade it!

author: Keysight DanielBogdanoff
author_rank: Unknown
timestamp: June 19, 2022, 04:38:16 am
content: Thanks @gamalot!

author: HighVoltage
author_rank: Super Contributor
timestamp: June 19, 2022, 10:49:40 am
content: Quote from: gamalot on June 18, 2022, 01:58:04 pmYes, would be fun.But since this one is for a customers test stand integration, it will will stay completely legal.

author: gamalot
author_rank: Super Contributor
timestamp: June 19, 2022, 11:27:10 am
content: Quote from: HighVoltage on June 19, 2022, 10:49:40 amYou don't have to do anything illegal, just change the model number in the URL of the web interface and you can make it look really cool!

author: HighVoltage
author_rank: Super Contributor
timestamp: June 19, 2022, 11:57:56 am
content: That indeed is funny.And legal ... I hope,
Owon 7102e still worth purchasing? - Page 1
Forum section: electronics / testgear

author: Suzook
author_rank: Contributor
timestamp: June 17, 2022, 11:54:00 am
content: Is the 7102 still worth purchasing these days? I can get brand new for about $235 USD.

author: adam4521
author_rank: Regular Contributor
timestamp: June 17, 2022, 03:42:20 pm
content: My budget list would be:Rudimentary (but functional): Owon's SDS1102 or HDS242 (portable, S option adds signal generator)Long memory, more triggers: Rigol's DS1102Z-E.After that start climbing the cost/value ladder with 4 channel models from Siglent, Rigol, Micsig etc.Unless I'd used one or seen some convincing videos about Owon 7102e, I'd be cautious. The low price might be good or it might be bad.

author: masterx81
author_rank: Frequent Contributor
timestamp: June 17, 2022, 10:17:41 pm
content: I've had the 7102... noisy as hell. Got a siglent 1104x-e and i never regret the more moneys spent
EEV BM235 - Continuity Problem - Page 1
Forum section: electronics / testgear

author: lazaj
author_rank: Newbie
timestamp: June 17, 2022, 10:30:11 am
content: Hello,I bought my EEV BM235 in 2017, since then no problems.I haven't used it for a month, today I start using it and it seems to have a problem in continuity mode.I tried several probes, change batteries ...When I join the probes together, it show 4 Ohms and then the measurement slowly drops to 0.5 Ohms.I did not have time to test the other functions.Any advices.Thanks.
Question about Atten ADS1022C oscilloscope - Page 1
Forum section: electronics / testgear

author: juanml
author_rank: Newbie
timestamp: June 17, 2022, 04:22:11 pm
content: Hi! I have an Atten ADS1022C 25 MHz oscilloscope that I bought 11 years ago. Searching on the forums I found out that it's the same scope as the Siglent SDS1022C, and also some other brands have the same model.The USB driver that comes with the scope is only for 32 bit systems, but I found 64 bit versions on the forum and now I can use the scope with the Easyscope 3.0 software only with USB (RS232 gives a connection error).I'm wondering if anyone knows if this scope supports SCPI commands. I tried installing NI-VISA but NI MAX won't detect the scope.Also I'm looking for firmware updates (if there are any), but I didn't find them.Any help is welcome.Thanks!Here's a video of the Siglent version:And here's a teardown of the Atten:
New Display for Pendulum CNT-90 Counter - Page 1
Forum section: electronics / testgear

author: pamphonica
author_rank: Regular Contributor
timestamp: August 14, 2020, 09:52:22 am
content: A recent auction of military surplus in the UK released a number (30 or 40) of these excellent counters (20GHz optioned) at <£500 prices.However, it's pot luck on condition (and even working condition), and my counter arrived with a slight defect on the display. The display is bright, but has this odd yellow track wandering about under the top layer of glass. I have checked and it's within the sealed display module. Photo attached. It's not serious, and otherwise the counter looks virtually unused and works beautifully. It does not seriously impact the readability. However, I wondered if a replacement display might be available.Fluke/Tek say it's obsolete and have no spares. The Pendulum UK agent quoted £575 and I have to return the counter to Poland for the repair.If anyone has any insight into where I might get a new display at a more reasonable price, I would be grateful.-Jeremy

author: coromonadalix
author_rank: Super Contributor
timestamp: August 14, 2020, 02:38:28 pm
content: hum i think i saw somewhere it was an 256x64 pixels glcd, can't recall the display chipset ??

author: DaJMasta
author_rank: Super Contributor
timestamp: August 14, 2020, 02:43:17 pm
content: Yeah, there are threads on this around. I know it's been done, I don't know if the replacement used was a perfect match.

author: coromonadalix
author_rank: Super Contributor
timestamp: August 14, 2020, 02:46:18 pm
content: I retract myselfIts an 320 x 97 dots TM32097AGFGservice manual available at ko4bb site by the way in the phillips foldersee a thread herehttps://www.eevblog.com/forum/testgear/fluke-pm6690-12-digits-frequency-counter

author: rockwell
author_rank: Regular Contributor
timestamp: February 19, 2022, 02:39:39 pm
content: Were you able to find a new display, I'm in need for a new one to.

author: rockwell
author_rank: Regular Contributor
timestamp: June 16, 2022, 07:34:16 am
content: I'm still trying to get a new display for this unit.Also I contacted Pendulum, wrote with Pendulum Denmark, they diverted me to Poland.Pendulum Poland was very kind, but not allowed to sell me a new display.They than diverted me to a Pendulum dealership in Germany who told me they can't sell me a display, only solution they offered me was to send the unit to them so they than send it to Poland for repair.The repair would finally cost me >800€In these modern days not really a synergic and enviroment and user friendly method.Next time I buy some used equipment I check for eventually used repair methods and parts availability.
Trouble with my Rigol 1074Z scope - can't record/playback - Page 1
Forum section: electronics / testgear

author: cvanc
author_rank: Frequent Contributor
timestamp: June 17, 2022, 12:00:28 am
content: I just realized the record and playback menus are both grayed out on my (cough, cough) 'upgraded' 1074Z. Every single option is on and permanent.Am I overlooking something here? If any of you can confirm it works on yours that would be useful information... thanks.

author: thm_w
author_rank: Super Contributor
timestamp: June 17, 2022, 12:18:48 am
content: You probably have something in the wrong mode.Did you reset to defaults?
Advantest R6552 Specs - Page 1
Forum section: electronics / testgear

author: chick0n
author_rank: Regular Contributor
timestamp: June 15, 2022, 02:53:55 pm
content: Hallo, dumb question:The Datasheet says the Sensitivity is: 0.1uV, 100uOhm, 10nA DC.The lowest Ranges are: 30mV, 30Ohm, 3000uA.So can it Really measure down to 0.1uV, or just 30mV?

author: Kleinstein
author_rank: Super Contributor
timestamp: June 15, 2022, 04:11:11 pm
content: The lowest voltage range is 30 mV. 0.1 µV is the resolution in that range. Obviously there is no 100 nV range - very few meters have such a small range.

author: chick0n
author_rank: Regular Contributor
timestamp: June 15, 2022, 04:39:09 pm
content: so it cant measure less than 30mV?

author: J-R
author_rank: Super Contributor
timestamp: June 15, 2022, 05:30:10 pm
content: It's a 319,999 count DMM, so in the 30mV DC range it would be able to display as low as 00.0001mV (.1uV) and up to 31.9999mV. This excludes any accuracy discussions.

author: Kleinstein
author_rank: Super Contributor
timestamp: June 15, 2022, 08:04:59 pm
content: Quote from: chick0n on June 15, 2022, 04:39:09 pmThe lowest range is a bit over +-30 mV. One can of cause also measure smaller voltages. The 30 mV range is so to measure up to 30 mV and less than 30 mV is the normal case. 100 nV resolution is already quite good and sufficient for thermal EMF and similar small voltges in the 10s of µV range. Much better would need special connectors as the normal banana plugs may lead to errors of a few µV if not careful.
Got donated two Fluke 177 without display - Page 1
Forum section: electronics / testgear

author: Maavin
author_rank: Newbie
timestamp: June 13, 2022, 10:27:20 pm
content: Hi,I just got donated two Fluke 177s with missing displays. One had the common problem with the corroded via an the battery trace, wich I fixed. The other had ni visible defects. Both seem to at least partly work (I checked the continuity and diode check modes).So, how would I go about and find replacement parts (from germany), and is it worth it? Missing parts are the LCDs, three zebra strips, one light spreader and two covers (with the fluke logo on it...).(I even had the insane idea wether it will be possible to read the LCD segment memory from the MSP430 via JTAG and add another display, rather defeating the use of a 9V Block...)

author: edisitaru
author_rank: Contributor
timestamp: June 15, 2022, 03:52:55 am
content: HelloFluke Germany?
Old Tektronix A6302 current probe with new TCPA300 amplifier - Page 1
Forum section: electronics / testgear

author: r0d3z1
author_rank: Regular Contributor
timestamp: October 09, 2019, 12:07:39 pm
content: Hello,someone know if it is possible to use the older A6302 (or A6303) current probe on the recent TCPA300 amplifier ? In other words, if I change the connector of the A6302 could I connect it to the TCPA300 ?Here is the picture of the TCPA300 male connector, anyone know the connector brand ?Thanks

author: r0d3z1
author_rank: Regular Contributor
timestamp: October 09, 2019, 12:52:03 pm
content: it looks like a LEMO FGGhttps://uk.farnell.com/lemo/fgg-2b-312-clad92z/plug-in-line-12way/dp/8386706

author: lukier
author_rank: Unknown
timestamp: October 09, 2019, 01:57:38 pm
content: It is kinda-sorta possible, but requires some kind of adapter that's more than 1:1 pins, especially Hall supply used to be +-3V in the old ones and is +-5V in TCPA300. Additionally, in TCPA300 there is no input for HALL_OFFSET signal as apparently this is done in the probe (new probes).Also, PROBE_ID resistances are different in the new probes and while I got some measurements from new probes to replicate, when used on A6032 the scale factors don't match what's on the TCPA3000 display (A/V), so custom probe scaling in the scope is needed for every TCPA300 range.TL;DR Possible, not easy, not super practical.

author: r0d3z1
author_rank: Regular Contributor
timestamp: October 09, 2019, 02:25:09 pm
content: thank you for the info. I am happy to see that someone else has already try to do the same.

author: smps
author_rank: Contributor
timestamp: June 15, 2022, 02:31:17 am
content: is the hall sensor of A6303 the same as tcp303? thanks
Siglent SDS1104X-E still a good option for a 500€ scope? - Page 1
Forum section: electronics / testgear

author: Calambres
author_rank: Frequent Contributor
timestamp: June 13, 2022, 03:46:10 am
content: Hi there!My old Tektronix TDS-320 scope is showing its age and giving me somereliability issues. I think this may be the right excuse to get a new modern scope. Never really knew much about today's scopes and so I've spent some time looking for a good one in the 500€ range. I like the Siglent SDS1104X-E a lot but, as it is some years old by now, I'm not sure if this is the best option in that price range.Sorry to bring back the old recursive "what scope must I buy" song, but I've been reading here and there and I am still not sure what to do.Any advice?Thanks a lot in advance.

author: bdunham7
author_rank: Super Contributor
timestamp: June 13, 2022, 03:51:48 am
content: It would still be my first choice at that price point. Of course it depends a bit on what you are doing, but coming from a TDS320 I have little doubt that you'll be impressed.

author: Calambres
author_rank: Frequent Contributor
timestamp: June 13, 2022, 04:43:51 am
content: Quote from: bdunham7 on June 13, 2022, 03:51:48 amMostly LF / Audio stuff with some occasional vintage, mostly tube, radio adjustments. The TDS320 has served me well all these years but it's quite an old unit (mine has a stamp dating it back to 1994) so, yes, any new scope is going to impress me big time.Thanks a lot for your answer.

author: tautech
author_rank: Super Contributor
timestamp: June 13, 2022, 05:12:11 am
content: CalambresThe little 4ch X-E is a lot of scope that I can assure you will take some time to get to know and be able to challenge its capabilities. It is still very actively supported and logging and NTP support were added in recent FW.If you want to save a few $ the 4ch X-U might be of interest with its lesser feature set.Comparison attached.

author: Calambres
author_rank: Frequent Contributor
timestamp: June 13, 2022, 06:01:33 am
content: I think the X-E is a better option for me... Thanks for the chart.
Aglent N9310 A Service Help - Page 1
Forum section: electronics / testgear

author: py2wg
author_rank: Newbie
timestamp: June 12, 2022, 08:16:11 pm
content: Gentlemen, I was making a measurement with the Signal Generator and by carelessness I put RF in it, it continues to work, but with 30 db of signal loss, I believe that the internal amplifier must have burned. , a lot of grain, Manoel
Fluke TL175 high resistance? - Page 1
Forum section: electronics / testgear

author: bob_mllr
author_rank: Newbie
timestamp: December 10, 2020, 11:44:13 am
content: I have a pair of new(ish) Fluke TL175 multimeter leads. Their resistance is ~ 0.4 ohm each. Other leads I have are ~ 0.01 to 0.02 ohm (measured on older Fluke benchtop DMM). Can anyone confirm if the 0.4 ohm for TL175 is typical of these? Cheers.

author: Tjuurko
author_rank: Regular Contributor
timestamp: December 11, 2020, 08:28:16 am
content: You can try running 10 amps of current through them and see the heat."Bad" wires at this current can melt.

author: PushUp
author_rank: Regular Contributor
timestamp: December 11, 2020, 05:41:00 pm
content: As far as my experience is concerned, some Fluke test leads are not very good. To give you a quick overview, I took a wooden clip to simulate the same pressure, always using the depression with the Flukes in contrast to Brymen and ProbeMaster which are even.With respect to the TL175 model, there are two versions: yellow vs. blackThe yellow leads were part of my "Fluke 289 FVF" kit and are quite good, apart from the plastic feeling: 0.0675 OhmThe black leads were part of my "Fluke 87V" and have a very poor quality: 0.6440 OhmThe best quality do have the ProbeMasters: 0.0411 OhmBut, considering the price of less than 10 Euro,......the Brymen do have the best value and feeling: 0.0469 OhmCheers.

author: Veketti
author_rank: Regular Contributor
timestamp: June 11, 2022, 02:43:50 pm
content: Old topic, but relevant so don't want to open new. I've got Fluke 175 which has seen very little use. Recently noticed that it shows 1.1ohm resistance. I thought that there is something wrong with the meter itself but it seems the TL175 probes are the issue. I was able to reduce the resistance by wiggling the silicon wires from the base of the probes... Needles to say, I don't trust these probes anymore and ordered ProbeMaster test leads.

author: J-R
author_rank: Super Contributor
timestamp: June 11, 2022, 09:18:22 pm
content: I had a similar issue and they replaced them under warranty. They actually sent me two sets and the new ones were fine.

author: bdunham7
author_rank: Super Contributor
timestamp: June 11, 2022, 09:37:39 pm
content: Quote from: bob_mllr on December 10, 2020, 11:44:13 amI have 3 sets, all fairly newish and lightly used with yellow inserts. I get 0.089 to 0.133 ohmsfor the pair, but one of them was reading a bit higher until I cleaned the tips with alcohol. You aren't typically going to see test leads with .01 ohms, so maybe your zeroing method needs a look. 0.4 ohms per lead seems a bit much.
Rigol RSA3000 series input DC block? - Page 1
Forum section: electronics / testgear

author: bayjelly
author_rank: Regular Contributor
timestamp: June 12, 2022, 07:03:54 pm
content: I am a bit unsure about the input protection of thedatasheetfor the Rigol RSA3000 spectrum analyzer series.Page 7 shows this:(I don't know why attachimg doesn't work, just look at the first image below.)So far so good, there seems to be a DC block on the input already. Indeed this thing starts at 9kHz.But right under that there's this:Okay, so if I read that right, the acceptable power below 10MHz goes significantly lower. But this looks to be about 7 dBm. Yet 50V into 5dB are already 47dBm. I guess this means that you can have a 50V DC offset, but the signal riding on top of it has to have a very small swing at low frequencies?But then, let's say, a "slow" 5V square wave (with no further DC offset, 27dBm) will kill it already? But averyslow one will not, since it's effectively changing the DC offset? Seems like the line should be goingupagain on the graph, going left of the 9kHz point that is the first one plotted? Bit confused by this.
Siglent Binary Viewer for Windows - Wanted Beta Testers - Page 1
Forum section: electronics / testgear

author: Ben7128
author_rank: Contributor
timestamp: June 12, 2022, 07:33:44 am
content: I am developing Siglent Binary Viewer for Windows. It is a program to open and display binary files created using the Siglent Oscilloscope Save to Binary (.bin) feature. It provides a super-fast method to display and examine up to 4-channels of captured data binary.Please view the YouTube demo here:[ Attachment Invalid Or Does Not Exist ]Features:• Time 100s to 1 ns per div• Volts 20V to 10uV per div• 14MB+ sample depth• Original volts per division and time scale used where known.• Horizontal zoom• Vertical zoom• Offset individual channels• Zoom to region of interest• Capture waveform using Windows ALT + PRINTSCREENFuture development:• Maths functions• FFT• Glitch detection• Cursor coordinates and measurements• Real-time displayThe program was developed and tested using Siglent SDS1104X-U 4-channel oscilloscope. I am hoping to find Siglent scope users who are willing to test the program and provide binary captures to expand the program capability. I am particularly hoping to support SDS1104X-E and other Siglent models as well.If you would like to help, please email me benebadman@gmail.com with subject line “Siglent Binary Viewer testing”. I will send you a link to a copy of the program together with instructions on what captures are needed.License Agreement:• This software is free and it comes with no warranty.• I am not liable for any damage caused by the use of this product.• You are not allowed to distribute this software.• You are not allowed to reverse engineer this software.• You are requested to report any problems that you encounter with this software.• Do not download this software from any other link than the one provided.• By downloading the software package you agree to the terms of this license agreement.Modify message* Screen Grab.PNG (467.32 kB, 1280x720 - viewed 5 times.)
Farnell MP750065 low cost signal generator - Page 1
Forum section: electronics / testgear

author: adam4521
author_rank: Regular Contributor
timestamp: June 11, 2022, 07:43:16 am
content: Farnell are off-loading their remaining stock of entry level generators and having bought one I thought I would share some thoughts/findings noting that some other forum members may have seen the offer online (UK £82 incl. VAT and delivery) and weighing it against other budget options like Feel-Elec etc.It's an own brand equivalent of Uni-T UTG9005c-ii (which is also discontinued). The specifications are not going to get anyone around here excited but it can do basic things:125MSa/s, 14 bit DDS.Single channel. Up to 5MHz out on sine/square, 1MHz on arb and 200kHz on ramp.20V p-p output or 10V p-p into 50 ohms. DC offset within these limits.Linear or log frequency sweep.AM/FM modulation. Can use internal or external modulation source.50 ohm output and also low impedance amplified output, at the rear.The display is a traditional fixed format, sort of reverse contrast calculator style. Backlit, not especially bright, but at least it is big (NB I had to use some IPA to get the glue residue off from the protection film).Good:Fast, near instant startup time. From cold it remembers the settings, apart from the 'output' button.There's a square wave synchronisation output. When outputting fixed frequency, this can be phase offset. For a sweep output it pulses at the sweep frequency, so you can trigger an oscilloscope on that.The integrated output amp is an unusual feature -- this convenience of being able to directly drive some current is what sold it for me.Bad:Does not support user-supplied waveforms. You just have the (pointless) built-in arb examples. This is a real downer!Has USB port, but supplied software doesn't install properly. Barely worth it if you can't upload waveforms, however I did find that the more recent software for the Uni-T UTG932/962 was able to 'remote control' this unit. I know there are people making python tools etc for the later machine and you might be able to adapt these if you were desperate to control it from software.Hope that helps and I'll try to answer 'can it do xyz' if anyone has questions. Farnell have about 80 of these units left in UK stock as of today, not sure about other distribution points.

author: oz2cpu
author_rank: Frequent Contributor
timestamp: June 11, 2022, 10:41:16 am
content: link ? pictures ? video ?I get nothing on Farnell with the info you provided

author: adam4521
author_rank: Regular Contributor
timestamp: June 11, 2022, 10:43:24 am
content: https://uk.farnell.com/multicomp-pro/mp750065/arbitrary-function-generator-1/dp/3130266https://youtu.be/-ilbXDnC5a8

author: oz2cpu
author_rank: Frequent Contributor
timestamp: June 11, 2022, 06:21:10 pm
content: thanks a lot mate, wow this one looks like very good vs price
Fluke voltage testers with and without VDE certification? - Page 1
Forum section: electronics / testgear

author: Per Hansson
author_rank: Unknown
timestamp: January 30, 2022, 05:52:53 pm
content: Hello, the Fluke T110, T130 & T150 voltage testers exist in a "normal" version and also a version certified by the German testing house VDE.But why does Fluke sell two versions, would it not be cheaper to just have one with all the certifications on the same body?I looked over the specifications but could not find any differences.Any insight to which one is a better purchase?At least at Elfa they all have identical prices with/without VDE certification...

author: Per Hansson
author_rank: Unknown
timestamp: February 01, 2022, 07:17:21 pm
content: I asked Fluke and they got back to me: the only difference is that on the VDE version you can not turn off the beeper.Indeed comparing the datasheets again I see that this function is completely missing on the VDE version:According to Fluke that is all that is different...

author: YASSKYLIGHT
author_rank: Newbie
timestamp: June 10, 2022, 11:56:03 am
content: Hi, I also read at some websites, what difference only in possibility to turn off beeper on VDE version.But me interesting - where this VDE is important or obligatory?For example, I came somewhere and me told - "your tester isn't VDE (version), go away". Or - "Man, turn off your beeper or go".Thanks!

author: Per Hansson
author_rank: Unknown
timestamp: June 11, 2022, 07:29:38 am
content: Quote from: YASSKYLIGHT on June 10, 2022, 11:56:03 amVDE is a requirement in some countries like Germany.But for example private companies in other countries could mandate it too.Thankfully my company does not so I can turn off them damn beeper
UNIT UT61E+ and Windows 10 (fixed) - Page 1
Forum section: electronics / testgear

author: Adrian_Arg.
author_rank: Frequent Contributor
timestamp: June 09, 2022, 03:23:16 pm
content: I have a UNIT UT61E+ multimeter, everything works perfectly, except for the USB connection with windows 10, it installs the drivers automatically, I install the software downloaded from its page, version 1.03, but it doesn't work in either a usb3 or usb2 port, but it does work in windows 7 what would be the problemin spanishposeo un multimetro UNIT UT61E+, todo funciona perfecto, menos la conexion USB con windows 10, instala los drivers automaticamente, instalo el software descargado de su pagina la vesion 1.03, perono funciona ni en puerto usb3 ni en usb2, pero si funciona en windows 7, cual seria el problema

author: PKTKS
author_rank: Super Contributor
timestamp: June 09, 2022, 03:28:04 pm
content: WHAT CABLE# - The UT-D04 USB/HID cable, old version with Holtek HE2325U chip.# - The UT-D04 USB/HID cable, new version with WCH CH9325 chip.# - The UT-D02 RS232 cable.They haveverydifferent results...in particular you may need ZADIGhttps://zadig.akeo.ie/on the WINxxxsss.Paul

author: Adrian_Arg.
author_rank: Frequent Contributor
timestamp: June 09, 2022, 04:24:20 pm
content: Fixed, it was a driver conflict, PKTKS
Floppy replacement (SD Card) in HP-35660A DSA possible ? - Page 1
Forum section: electronics / testgear

author: RichardM
author_rank: Frequent Contributor
timestamp: June 09, 2022, 10:48:08 am
content: Hi All,Wondering whether there is a floppy emulator (ie SD Card) compatible with the HP-35660A DSA ? I notice a kit is available for the 35665A.CheersRichard

author: RichardM
author_rank: Frequent Contributor
timestamp: June 09, 2022, 10:53:41 am
content: The Sony floppy model shown herehttps://www.eevblog.com/forum/repair/hp-35660a-dsa-floppy-disk-drive-repair/Appears to be the same as the one in the HP-4145b so perhaps the kit listed athttps://www.glkinst.com/test-equipment/will work ?Richard
Bipolar power supply and if possible load? GPP-4323 vs something else - Page 1
Forum section: electronics / testgear

author: loki42
author_rank: Frequent Contributor
timestamp: June 07, 2022, 11:31:57 am
content: I'm looking for a multi output power supply to use for op amps, audio etc +15 -15 v +9 -9. Max voltage range +15 -15, max current < 1 amp. Need 2 outputs but more would be fine. I'd also be interested in a bipolar load for testing power supply behaviour (noise at different currents, efficiency etc). Is the GPP-4323 the best option? Can it work as a bipolar load? Price range is pretty flexible. I have a Agilent 2 quadrant PSU/SMU now but it's only 1 channel. I'd also like something less loud. Looking for new and in stock.Is there a Keysight, AIM TTI or R&S that would be better? I also need LAN.

author: loki42
author_rank: Frequent Contributor
timestamp: June 07, 2022, 11:52:57 am
content: main units I'm looking at are R&S HMC8043, E36311A (and similar) MX180TP and the GPP-4323.

author: pope
author_rank: Frequent Contributor
timestamp: June 07, 2022, 01:10:26 pm
content: I'm also interested!

author: mawyatt
author_rank: Super Contributor
timestamp: June 07, 2022, 01:36:06 pm
content: The GPP-4323 can't do bipolar loads, and the range for the outputs is 0-32V, 0-32V, 0-5V and 0-15V for channels 1-4 respectively. We have and use one and it's a nice PS for GP lab use.Best,

author: Hexley
author_rank: Regular Contributor
timestamp: June 07, 2022, 11:04:06 pm
content: Quote from: loki42 on June 07, 2022, 11:31:57 amSome comments from a GPP-4323 owner:If you only need a single quadrant at a time, you can use the GPP-4323 as a load for either positive or negative supplies since the load inputs are floating. For a positive supply you would ground the negative load terminal and connect the positive rail to the positive load terminal. For a negative supply you would ground the positive load terminal and connect the negative rail to the negative load terminal. Since there are two independent load channels, you can set one up for positive supplies and the other for negative supplies and then you could load, say, a +/- 15 volt supply symmetrically.All current-production GPP-4323 include the LAN. Used to be an inexpensive option; they finally did the obvious thing and rolled in into the standard configuration.Hope that helps.

author: loki42
author_rank: Frequent Contributor
timestamp: June 08, 2022, 10:41:45 pm
content: Anyone got a preference between the R&S and the keysight? Otherwise the gpp sounds good.
How do I save History Acquisitions with Siglent SDS? - Page 1
Forum section: electronics / testgear

author: kimito
author_rank: Newbie
timestamp: January 14, 2018, 03:58:28 pm
content: Hi, I need support for my SDS2104X oscilloscope. I'm trying to save history and sequence acquisitions for further analysis with my computer, how can I do it? Thanks.

author: rf-loop
author_rank: Super Contributor
timestamp: January 14, 2018, 04:55:27 pm
content: Quote from: kimito on January 14, 2018, 03:58:28 pmLong time ago it works like this (I do not know at this time how most new versions looks and works). Output is .csvYou need use EasyScopeXIt goes somehow like this.Look image (of course select right numbers what you want)

author: kimito
author_rank: Newbie
timestamp: January 14, 2018, 06:10:27 pm
content: Quote from: rf-loop on January 14, 2018, 04:55:27 pmThanks for your answer. I tried to use EasyScopeX in this way but I get an .csv file with 'n' waveforms equals to current frame shown in history mode. If you say that this way works, I suppose that my config has some problem.

author: rf-loop
author_rank: Super Contributor
timestamp: January 15, 2018, 12:09:43 pm
content: After some more look now, it looks like there is some bug. At this time I do not know if bug is in EasyScopeX or scope FW.I will contact Siglent about it.

author: sibir
author_rank: Newbie
timestamp: June 08, 2022, 06:09:14 pm
content: It's been 4 years. Is there still no other/better way to save a sequence history from an SDS scope?
Review Hioki DT4261 and DT4256 - Page 1
Forum section: electronics / testgear

author: Jiri Bekr
author_rank: Contributor
timestamp: June 15, 2022, 03:56:45 pm
content: Hello guys, I review and test some equipment, mainly multimeters and power tools. Since some of my content would be of use worldwide, I make some YT videos also in English language (my main channel is Czech). I have explored EEVblog youtube channel approx. 4 month ago, and the Dave Jones guy seems to definitely be on point with any instruments. As this forum looks to be for electrical test gear in general, you may find useful my review for Hioki DT4256 and Hioki DT4261 with Hioki Z3210 Bluetooth comm module. I have tried my best to review the instruments, as they are unkown in Europe, and I have also prepared excel table with 77 tested aspects (see attachment). Videoreview is available on my secondary English channel (first link) and if you understand Czech, also on my main channel (second link). Video thumbnail preview attached at the end.As english is not my native language, and I am just 25, definitely not as experienced as mr. Jones, please apologize some minor errors, mistakes and such.I am also planning on continuing cooperation with Teste - Hioki distributor. Next to come will be two clamp meters, DT4282 and let's hope for PC software, and maybe even portable datalogging 3 phase analyzer (as I work with them professionally, my boss told me I can test Hioki analyzer against our Chauvin and SMY133).You can also check out some other videos of mine, but as my EN channel doesn't grow at all, I did't prioritize it, so just fraction of content gets there too.If you happen to have some questions or notes, feel free to comment in both youtube and this forum thread. YT may have wider audience, but it keeps deleting comments randomly, so better have it also here.English YouTube video:https://bit.ly/3QB0L1dCzech YouTube video:https://bit.ly/3Qqucma
Multimeter Reviews including Fluke 87V, Fluke 175, Fluke 117, Fluke 107 - Page 1
Forum section: electronics / testgear

author: TheDefpom
author_rank: Frequent Contributor
timestamp: June 08, 2022, 06:40:37 am
content: I have done a many multimeter reviews recently, which can be watched in this playlist:I have done the following meters from Fluke, so I thought I would post about it here.Fluke 87 Series V review:Fluke 175 review:Fluke 117 review:Fluke 107 review:
tektronix AFG3022B hack? - Page 1
Forum section: electronics / testgear

author: graybeard
author_rank: Frequent Contributor
timestamp: June 07, 2022, 08:32:19 pm
content: Is it possible to hack aTektronix AFG3022B 25 MHz function generatorto an AFG3102 100 MHz model or a AFG3252 240 MHz model?I "upgraded" my 100 MHz TDS3012B to a 500 MHz 3052B.
anyone tried installing a RTC1002 upgrade on the earlier HMO 1202 series? - Page 1
Forum section: electronics / testgear

author: hazzer
author_rank: Regular Contributor
timestamp: June 07, 2022, 12:07:55 pm
content: HelloI have a HMO1202, a very nice DSO, no longer manufactured.Looks to have been replaced by the R&S RTC1002 an identical DSO, same spec, with just some tweak's to the licence options.My question is has anyone perchance tried installing an upgrade licence for an RTC 1002 on a HMO 1202? (as R&S no longer sell upgrades for the HMO1202).https://ie.farnell.com/rohde-schwarz/rtc-k1/i2c-spi-trigger-decode-digital/dp/2836579A long shot but I'm sure I'm not the first person the think of trying this ?RegardsHarry

author: tv84
author_rank: Super Contributor
timestamp: June 07, 2022, 05:10:56 pm
content: Answer ishere.
Using HP 8935 as a 1 MHz to 1 GHz Sweep Generator? - Page 1
Forum section: electronics / testgear

author: Lmcelhiney
author_rank: Newbie
timestamp: June 06, 2022, 11:42:26 pm
content: I know that there are many options using other equipment, but I have a simple question: Can I use my HP 8935 as a 1 MHz to 1GHzSweep generator? (I do not have GPIB nor is the Test Set connected to a computer.)This HP 8935 is in “like new” condition and has performed in specification as compared to other test equipment.I want to provide a swept signal to a stand-alone spectrum analyzer DUT - my final response will show +/- 2dB.(This model has the RF Tools package installed and I have a -40dB VSWR Bridge for this frequency range. Could the bridge output meet my needs?)Thanks for your response!LarryAC9OX
Firmware for Tonghui TDO3062A? - Page 1
Forum section: electronics / testgear

author: ph_66
author_rank: Newbie
timestamp: May 29, 2022, 09:30:03 pm
content: Hello,as a newbie both to this forum and also fairly to DSOs, I need a bit of help for the old oscilloscope I found on ebay for little money.It's a Tonghui TDO3062A and I tried all the bells and whistles on it and found some things that I do not understand:- When switching to equivalent sampling, it refuses to sample with more than 100Msp/s, at least that is what it says in the right top corner. It should show something like 10Gsp/s when I turn the horizontal resolution all the way to 5ns/div, right?- When switching the vertical knobs to fine resolution and having set the probe setting to 10x in the menu, it seems to work correctly for all the intermediate values, but not for the values that correspond to the coarse setting. The waveform on the screen gets bigger then and on the next turn of the knob it scales back to what I would expect.- I had some triggering issues in dots mode, but I wasn't able to reproduce it.As my DSO seems to have been worked on, this could also be due to an improper firmware hack.If anyone has a copy of the firmware for the TDO3000A, I would appreciate it very much.I already emailed to Tonghui support, Leaptronix (seems to be an OEM) and to a big reseller, but never received any answer. I found something for the TDO3000B at the BK-Precision site, but this is not accepted by my A-model.Thanks in advance for any help.Peter

author: ph_66
author_rank: Newbie
timestamp: June 06, 2022, 09:11:02 pm
content: Hello,no reply so far... no one with an old copy of the TDO3000A firmware?Should you find a file called 3000A.upt on some of your storage devices, I would be more than happy to get a copy.Thanks and bestPeter
Long Shot Documentation search - HP5316A Frequency Counter - Page 1
Forum section: electronics / testgear

author: rfdes
author_rank: Regular Contributor
timestamp: June 06, 2022, 01:10:06 am
content: I am reaching out to the group in hopes of tracking down some elusive documentation.The HP5315B/5316A frequency counters sold during the '80s offered an Option 6 module that provided a normalizer/offset feature. This Option 6 feature came with it's own operating/service manual (HP# 05315-90011) (Addendum #05315-90019). I've been attempting to track down a copy of these manuals with no luck. If anyone has knowledge where to locate this information, it would be appreciated.Thanks - Jim

author: jhenderson0107
author_rank: Regular Contributor
timestamp: June 06, 2022, 03:30:31 pm
content: http://www.ko4bb.com/getsimple/index.php?id=manuals&dir=HP_Agilent/HP_5315_Universal_Counter

author: rfdes
author_rank: Regular Contributor
timestamp: June 06, 2022, 04:04:29 pm
content: Thanks for the reply, however, I am need of a *different* service manual that focuses only on the Option 6. This manual has the part number 05315-90011. It seems that there must have been very few of these option 6 sold.Take care .
Metermaster 65601 ocilloscope  repair - Page 1
Forum section: electronics / testgear

author: Calo
author_rank: Newbie
timestamp: June 05, 2022, 02:26:44 pm
content: My oscilloscope vertical axis dose not go above half of the screen, it only works right for a few second than it drops below middle of the screen any one had issues like that?

author: Chris56000
author_rank: Frequent Contributor
timestamp: June 05, 2022, 08:49:13 pm
content: Hi!The Metermaster 65601 Oscilloscope is a clone/rebadged version of the Aron BS–601 and an instruction manual with theory of operation notes, parts lists, adjustment notes, layout and circuit diagrams can be downloaded from k04BB!http://www.ko4bb.com/manuals/77.101.201.133/Aron_BS-601_20_MHz_Oscilloscope_Operator_Manual.pdfChris Williams

author: Calo
author_rank: Newbie
timestamp: June 06, 2022, 02:24:12 am
content: I turned pretty much every adjustment pot no changehttps://youtube.com/shorts/W2Qd8UkSy7Q?feature=share

author: Grandchuck
author_rank: Super Contributor
timestamp: June 06, 2022, 12:52:06 pm
content: The manual on page 23- shows the vertical output circuit. Check the supply voltages and then work backwards from Q17-Q20.