hybridfree/eevblog-posts huggingface dataset:
TDS5054 screen Shots - Page 1
Forum section: electronics / testgear

author: daveyk
author_rank: Frequent Contributor
timestamp: April 18, 2020, 06:27:25 pm
content: Beside on the scope itself doing a screen print, pasting in to Paint, and then saving to a USB Thumb drive and then transferring that file to a computer that I am editing on (whew), is there a way to get a screen shot off of a TDS5054 through the GPIB port, or network?I have it on the bench and a network cable going to a switch above the bench, but being Windows 2000, it can see the network, but can not talk to it, and the other computers can not see it. Windows 2000 has been too much water under the bridge to remember how to network it. I know it does not have TCP/IPv6, or even TCP/IPv4 for that matter. If I go to the effort to see if those protocals are available for Windows 2000, would that fix the problem? I don't know if you could browse to the scope on the network and see it's screen (like you can with a Siglent scope)? Even if I could save a screen shot locally on scope and share that folder, that would be okay, or, on the scope save a screen shot to a network folder, that would be okay.Ideally, a utility or program that can capture a screen shot via GPIB would be the best solution. OpenChoice does not support the TDS5054, even though it is 7-8 years newer. It does not appear Tek has a utility to do this.Anyone have experience with a TDS5054?Dave

author: harrimansat
author_rank: Regular Contributor
timestamp: October 16, 2025, 01:51:26 pm
content: Yes, try wavestar, you can download It in tektronix page

author: coromonadalix
author_rank: Super Contributor
timestamp: October 16, 2025, 02:47:14 pm
content: lots of help on google to network an win2k machine, and w2k is supposed to have ip v4 in it ??
Experimenting with 'B' firmware on a Keithley 2001 'A' model - Page 1
Forum section: electronics / testgear

author: inaxeon
author_rank: Regular Contributor
timestamp: March 17, 2020, 06:08:18 pm
content: Hi GuysI know this is kind of a ridiculous thing to do - but I couldn't resist the temptation. I built an adapter so I could cram a larger ROM into a Keithley 2001 'A' model.It seems to have worked i.e. it now boots version B16, but it appears I've lost all of my calibration data, and stupid me, I didn't back it up.Even when I put the old 'A' rom back in, it still says it's lost. I'm quite surprised that the behavior is to erase what's there when changing from ROMs?Is there anyone here with better knowledge of this stuff who can give me some advice before I dig myself into a bigger hole!Thanks

author: inaxeon
author_rank: Regular Contributor
timestamp: April 18, 2020, 04:57:18 pm
content: Figured this out.After having booted my 2001 with (more or less) the latest firmware (B16) I discover that the calibration data hasn’t loaded, and on top of that it’s gone and wiped the calibration memory on boot-up. FFS.It turns out that the format of the calibration memory is different between the original firmware (A08) and what I’ve upgraded it to (B16). Referring back to the great oracle of Keithley 2001 related information (xdevs.com) one of the images he’s got up there appears to be in the same format as what I’ve upgraded to, so I edited the binary to put my serial number into it, flashed that into mine, and I’m back in business, albeit with someone else’s calibration coefficients. Eh. I don’t care, my cals were a decade out of date (long overdue to be re-done) anyway so no big loss.(full details here:http://tech.mattmillman.com/rom-adapter-for-running-b-firmware-on-a-keithley-2001-with-a-pre-rev-k-digital-pcb/)

author: MadTux
author_rank: Frequent Contributor
timestamp: April 18, 2020, 06:24:59 pm
content: Happens to K2015 as well, if you try to upgrade firmware, gets an error flag on bottom of display.Readings on most ranges are still correct however. But since K2015 has so much different functions, I didn't bother to find out, which one is wrong.Have a cheaply acquired 2010 with A firmware here as well, self test isn't implemented there, but I don't dare to upgrade, since it probably looses calibration as well.

author: inaxeon
author_rank: Regular Contributor
timestamp: April 18, 2020, 06:37:25 pm
content: Yeah I saw the "ERR" indicator (with no startup errors) during my messing around. It turns out in the case of the 2001 - that means it's running with the factory default coefficients.
Wavetek 1175 Scalar network analyzer - Page 1
Forum section: electronics / testgear

author: rbduja
author_rank: Newbie
timestamp: April 18, 2020, 05:51:23 pm
content: Hi guys,I've received bare Wavetek 1175 Benchmark scalar analyzer without any probe and manual.The problem was in power supply, now is ok, and problems persist without probe, Wavetek description is: Power sensor with dual balanced, zero bias low barier schotki diodes.I cannot find original probes, but I will make it, and I need service manual or the schematic diagram for original Wavetek probe.Any help and advice is welcome.
NAS-Z5 Insertion unit - Page 1
Forum section: electronics / testgear

author: veedub565
author_rank: Frequent Contributor
timestamp: December 08, 2019, 06:53:02 pm
content: Hi, I have a Rhode & Schwarz NAS-Z5 insertion unit. I also have the Rhode &Schwarz CMS36 Radio Test set. Unfortunatly what I don't have is the cable that connects the two.Anybody know what the part number is for the cable? Or got any details at all about the pinout?I've tried R&S but without a part number they won't help.

author: Rohde and Schwarz
author_rank: Newbie
timestamp: December 23, 2019, 03:05:14 pm
content: Hello,our customer support had to dig very deep. The cable you are looking for is named CMS-Z37. Part No. is 1065 4920.00.But as the instruments are not delivered anymore since the 1990s, the cable is also no longer available.Only chance is to rebuild the cable youself according to the enclosed plan.Best regards,Gerti from the Rohde & Schwarz Social Media Team

author: veedub565
author_rank: Frequent Contributor
timestamp: February 04, 2020, 10:31:00 am
content: Wow many thanks for this, please also thank your excellent customer support digging deep for thisI should be able to make up a new cable from the plan.

author: luma
author_rank: Regular Contributor
timestamp: February 05, 2020, 03:17:00 am
content: That kind of support is one heck of an advertisement for buying R&S!

author: tooki
author_rank: Super Contributor
timestamp: February 05, 2020, 06:42:53 pm
content: Quote from: veedub565 on February 04, 2020, 10:31:00 amFYI, one critical bit of info is that some of the wires must be shielded, namely the ones labeled “geschirmt”. Lemme know if you need any more help translating the German.I’m also a bit perplexed as to the connection list (“Verbindungsliste”) showing three items, not two. Two are the connectors, but one looks like it could be a PCB or something. It has wires coming from both connectors.

author: veedub565
author_rank: Frequent Contributor
timestamp: February 06, 2020, 08:09:29 am
content: Quote from: tooki on February 05, 2020, 06:42:53 pmYes I noticed that too, it looks like there may be some sort of level converter built into one of the connectors. Without knowing the details of what that part is it's going to be difficult to make up a new lead.

author: veedub565
author_rank: Frequent Contributor
timestamp: April 17, 2020, 12:01:34 pm
content: Found a bit more information about this mystery component in the test lead. Looks like it has 4 inputs+10v-10vGNDRes DCand 2 outputsGNDUnknown?Looks like it may be some sort of op-amp with +/-10v supply, a ground, and a reference. And it's applying a reference voltage to the NAS-Z5 unit with +/- 10v swing.
How to save acquired data of the waveform on Tek TDS 694C - Page 1
Forum section: electronics / testgear

author: geshka
author_rank: Regular Contributor
timestamp: April 18, 2020, 10:56:33 am
content: Hello there.I have Tek TDS 694C and I need to analyze data of the acquired signal/waveform in external program. In particular, I am reading stream of pulses from optical sensor and want to make sure there is no missing ones. Is that possible to save internal buffer or memory for some period of time (as long as possible ) to diskette for further analysisThanks
Writing custom app on MicSig STO1104C - Page 1
Forum section: electronics / testgear

author: matmatmat
author_rank: Newbie
timestamp: April 15, 2020, 03:44:03 pm
content: Hi everyone,I'm thinking about buying a new oscilloscope.My favorites so far:-Sigilent 1104X-E(hacked by me to 1204X-E)-MicSig STO1104CI would like to ask if this is possible to write custom android apps and run them on MicSig. If this is possible to capture signals to this app or even use previously captured 28MB of data saved on the oscilloscope.I like the concept of programable oscilloscope but I'm not sure if MicSig STO1104C is programable.Maybe I will be better with Sigilent, wifi and SCPI via my PC or my android mobile phone.

author: Micsig_support
author_rank: Regular Contributor
timestamp: April 17, 2020, 02:11:55 am
content: Quote from: matmatmat on April 15, 2020, 03:44:03 pmHi Micsig have the APP of Android, pls download it from their website. and you also can find SCPI in the website too.
Question: HP plugins compatibility - Page 1
Forum section: electronics / testgear

author: TerraHertz
author_rank: Super Contributor
timestamp: April 21, 2020, 07:05:08 pm
content: Does anyone know if the plugins for HP 54720 series scopes, also work in the later HP 54750A/83480A frames?These plugins: 54711A, 54712A, 54713B, 54714A, 54717A, 54718A,54721A, 54722A (and the related active probes.)The slots and rear connectors look identical, but I can't find any HP docs saying they are electrically compatible, and recognized by the later model mainframe firmware.The 54750A/83480A frames are actually the same, just one is a scope and the other a 'communications analyzer'. There's a firmware patch that turns either of them into 'both of them.'If those plugins are compatible, then there's some cheaper variety for my 83480A.54720 scope: HP catalog 1994, pg 13654750 scope: HP catalog 1998, pg 103. 83480 pg 430.Also... is this the cheapest 1GHz ever? (pic)I won a HP 54710A for US $9.99. (Shipping doesn't count! No, it doesn't. I'm going to keep telling myself that.)It powers up, but the screen is blank. Hopefully, some repairable CRT EHT/drive circuits fault.The 54710A is the least-optioned version of the 54720D, like this:547 10 : 2 slots20 : 4 slotsA : 16K mem/slotD : 64K mem/slotSo the 54720D is 4 slots of 64K each, while the 54710A has 2 slots of 16K each.The catalog lists an 'accessory' - HP 10087A 54710A to 54720A upgrade service. Presumably duplicating the sampling boards.I'm curious to see if the memory can be upgraded easily.The main point is, plugins for this series are fairly cheap. Unlike the plugins for my 83480A.Worst case, it's spare parts. In the ebay photo the screen doesn't have any visible burn-in. While my 83480A has annoyingly bad burn-in. And I know why - reading the manual, it recommends that for best cal accuracy the scope should never be turned off!
Strange behaviour on Tek 3 Series scope (bug?) - Page 1
Forum section: electronics / testgear

author: tom66
author_rank: Super Contributor
timestamp: March 10, 2020, 09:40:35 am
content: We are continuing in our quest to evaluate oscilloscope options and finding some really quirky bugs.On my desk now is a Tek MDO34, 200MHz bandwidth, 2.5GSa/s ADC with the 3GHz RF input.The behaviour (I am not sure it is a bug) manifests as such (there are almost certainly other ways to trigger it, but this one is consistent):- Set scope to normal trigger with an input signal (noisy signals work well, as they show many graduations on the DPO)- Set the trigger up so no events are captured, and run the scope. No waveform appears.- Force a trigger using 'Force' button. Waveform appears. Note that the waveform appears to have random and continuous noise.- Disconnect any input signal for further reassurance that acquisition is not actually occurring.- Note that despite no acquisition occuring, the scope seems to emulate the appearance of waveform update with the noise added to the waveform. However, if you adjust the timebase or V/div scale, press Run/Stop or do anything to the acquisition, the animation stops and won't restart until the acquisition is re-run.As behaviours go, this is odd. My best guess is that Tek apply this noise to the waveform to make the update rate appear higher or to implement the dynamic phosphoring (perhaps related to persistence features.) However, it seems to be left on whenever a channel is on, which can mislead the user into seeing a continuous update when none is present.Tested on firmware v1.6.0 (2019-08-08)Edit: This only seems to occur on auto persistence. So it seems to be related to persistence remaining on after an acquisition. In the mode without persistence the bug/behaviour is not present.

author: tautech
author_rank: Super Contributor
timestamp: March 16, 2020, 07:31:08 am
content: And now you've had some time with it, a verdict ?

author: nctnico
author_rank: Super Contributor
timestamp: March 16, 2020, 12:24:25 pm
content: Seems like normal behaviour to me. In persistence mode the waveform is supposed to fade away slowly so what you are seeing is the waveform fading away. This effect is supposed to stop when you change the modes or go into stop mode.

author: Analog Dragon
author_rank: Newbie
timestamp: April 15, 2020, 03:13:32 am
content: My MDO34 softver is V1.8.1.The problem still there.I've found a lot of other bugs that might even make it crash.It's awful.
ESPOTEK Labrador availability - Page 1
Forum section: electronics / testgear

author: eetechTom
author_rank: Contributor
timestamp: April 14, 2020, 05:20:33 pm
content: I hope this doesn't come across as me promoting a product/vendor, but here goes.I recently became familiar with the ESPOTEK Labrador all-in-one USB test device. I have recently ordered several for a remote undergrad lab. Just an FYI, after placing the order from the ESPOTEK website, later that day I was told Mouser has 100 in stock. The ESPOTEK website shows a back order time of up to 8 weeks

author: stafil
author_rank: Regular Contributor
timestamp: April 14, 2020, 05:58:19 pm
content: Why not cancel your order and place a new one with mouser then?

author: eetechTom
author_rank: Contributor
timestamp: April 15, 2020, 03:44:33 pm
content: Was going to do that, but it turns out I need to have the hit to our budget delayed. Not by 8 weeks though!
Written Tutorial for DSLogic  or DSView ? - Page 1
Forum section: electronics / testgear

author: eetechTom
author_rank: Contributor
timestamp: April 14, 2020, 03:32:50 pm
content: Hello, I am looking for awrittentutorial for the DSLogic Plus analyzer. I've searched online for a few hours and all I see are a few YouTube videos.Is anyone aware of one, not very hopeful at this point. If my employer writes one I will attempt to share it, as I think it would be helpful. I know most engineer types will just slog through and teach themselves, but I have been asked to find documentation for an undergrad level lab.Regards

author: thm_w
author_rank: Super Contributor
timestamp: April 14, 2020, 08:57:16 pm
content: https://www.dreamsourcelab.com/support/
Bird Signalhawk sh-36s second hand reviews ? - Page 1
Forum section: electronics / testgear

author: nenea dani
author_rank: Regular Contributor
timestamp: March 31, 2020, 07:06:10 pm
content: Hi colleagues,I want an opinion from you on a second hand spectrum analyzer Bird Signalhawk sh-36s for only 500Euro. I can check it in some way before the purchase. It can be used as a hobby device or it is better to focus on a new buy Rigol DSA815-TG . It interests me to observe the harmonic level of a signal and to adjust various LPF filters. No special work. Another question is if I can use a good noise source +LNA instead of a TG on the 10MHZ -1000Mhz range?Daniel UngureanuYO8SAK

author: knapik
author_rank: Regular Contributor
timestamp: April 14, 2020, 02:03:04 pm
content: Quote from: nenea dani on March 31, 2020, 07:06:10 pmSorry, changed my response because was thinking of the newer SignalHawk. Having dealing with their current stuff, I would be highly sceptical
Fluke 28ii vs 87v Max - Page 1
Forum section: electronics / testgear

author: Caperjoe
author_rank: Newbie
timestamp: April 12, 2020, 01:58:13 am
content: No doubt this has been asked by now but I couldn't find any real information on it so figured I would ask. Aside from the 1m increase in drop distance what are the real differences in these two meters. I've noticed in the Fluke literature it says the 28ii can withstand 8000 volt spikes whereas there is no mention of this for the 87v max... is this to say the 28ii is more of an Industrial meter? Just curious if anyone has any real insight into whether the 28ii is being phased out in favour of the 87v max.Thanks for the responses and stay safe.

author: Fungus
author_rank: Super Contributor
timestamp: April 12, 2020, 04:25:08 am
content: This has been done to death here:https://www.eevblog.com/forum/testgear/what-do-you-think-of-the-new-fluke-87-v-max/

author: rvalente
author_rank: Frequent Contributor
timestamp: April 12, 2020, 11:34:54 pm
content: Why people cant use the search function??ohh, i know, asking is easier them searching!

author: Fungus
author_rank: Super Contributor
timestamp: April 13, 2020, 05:04:06 am
content: Quote from: rvalente on April 12, 2020, 11:34:54 pmBecause it's broken.The only way to search this place is with google.

author: Someone
author_rank: Super Contributor
timestamp: April 13, 2020, 05:41:24 am
content: Quote from: Fungus on April 13, 2020, 05:04:06 amDunno what you are doing but pressing the search link (between Help and Profile) and entering in the text "28II 87V" to the basic search box worked fine. Many many relevant results come up easily. Possibly you are following the thread/board search buttons rather than the site wide search?

author: Fungus
author_rank: Super Contributor
timestamp: April 13, 2020, 05:54:00 am
content: Quote from: Caperjoe on April 12, 2020, 01:58:13 amThe CAT rating is printed on the front of both meters.

author: Caperjoe
author_rank: Newbie
timestamp: April 14, 2020, 04:12:23 am
content: Did search but never found the answer to the question I was asking. Fortunately someone gave me a very clear answer which truthfully I should have known ( funny how answers can be right in front of you the whole time but you still never see them until someone points it out )
HP Memory Card - Page 1
Forum section: electronics / testgear

author: spongella
author_rank: Contributor
timestamp: April 04, 2020, 01:48:28 pm
content: I have a HP 85700A 32K byte RAM card with the holder. I got it to use with my HP 8591 spec analyzer, but it does not seem to work. As you can see it has a label on it it "Demos Installed." I put in a new CR2016 battery and formatted the card on the spec analyzer. Anyone know if this is the correct card for a HP 8591A? Thanks.

author: Stray Electron
author_rank: Super Contributor
timestamp: April 04, 2020, 01:53:45 pm
content: I don't know if the card works in the 8591s but if you reformatted it then it's now just a blank card with no software or data files installed. I do know that some of the HP equipment has to have the correct option installed before they can read and write to the memory cards.Have you looked up the HP 8591 manual and see what it says about using the memory cards? It should tell you everything that you need to know.

author: Bicurico
author_rank: Super Contributor
timestamp: April 04, 2020, 09:40:06 pm
content: If you remove the battery all contents are lost.Try storing something on the card.

author: ps
author_rank: Regular Contributor
timestamp: April 11, 2020, 01:27:52 pm
content: Quote from: spongella on April 04, 2020, 01:48:28 pmYes, HP 85700A (32k RAM) is the correct memory card type for the HP859x series. If the card is not recognized properly, check the battery. If formatting still fails leave it sitting overnight with the battery removed, insert the battery and try again.

author: Bicurico
author_rank: Super Contributor
timestamp: April 11, 2020, 03:31:41 pm
content: Perhaps I should have said it: I have this card and it works well on my HP8594E.Regards,Vitor

author: spongella
author_rank: Contributor
timestamp: April 14, 2020, 12:39:14 am
content: Thank you all for the helpful comments.
Weston Model 976 Multimeter  - Page 1
Forum section: electronics / testgear

author: Ghinessey
author_rank: Newbie
timestamp: August 17, 2017, 10:20:20 pm
content: Does anyone have info on the Weston Model 976 Multimeter. When I bought the unit it came without manual or any supporting literature. I have looked everywhere on the internet. Any help would be greatly appreciated.

author: calebreister
author_rank: Newbie
timestamp: April 10, 2020, 12:35:00 am
content: Well, it's been nearly three years since the original post, and I wanted a digital copy of the Model 976 manual. I still haven't found one. Fortunately, I have a hard copy, and I've now scanned it. For those who are still interested, here's the GitLab repository where I host the files:https://gitlab.com/calebreister/weston_model_976.

author: ResistorRob
author_rank: Regular Contributor
timestamp: April 10, 2020, 04:33:06 am
content: Could you post a couple photos of this suitcase multimeter. Looks pretty cool from the illustration in the manual.

author: calebreister
author_rank: Newbie
timestamp: April 13, 2020, 11:15:15 pm
content: Sure! I took quite a few, so here's an album:https://photos.google.com/share/AF1QipPU_2gUjtcQ0Ij4ZCCFHpCifRQP2kQ2_Hv8Yt78OciCNOjLdkNlwZOdjQQ-X1XN1g?key=bC1qWTV4UGQ3cm5zVWxldFpqb0ZveUZJdlhTY2N3
Strange resistance reference mod found for 3478a on Chinese forum - Page 1
Forum section: electronics / testgear

author: Mp3
author_rank: Frequent Contributor
timestamp: April 13, 2020, 09:36:49 am
content: I noticed this googling part numbers out of the 3478a service manual,a Chinese thread where people were discussing replacing the reference resistor with a more stable one.(Their words not mine).Is this sort of mod worth doing? It seems to me like it might be problematic.But i don't know if it's worth doing since today's resistors might be made to tighter tolerances.Any thoughts on this?

author: Kleinstein
author_rank: Super Contributor
timestamp: April 13, 2020, 11:13:00 am
content: In the 3478 the relevant resistors that set the Ohms mode scale factors are all part of the hybrid(s). So there is no way to replace them.Anyway the 3478 is a relatively good 5.5 digit meter - not one to get really highest performance. It may share the input hybrid type with the high grade 3457. So I would not worry much about the ohms accuracy.The part shown between the 2 relays is a capacitor responsible for AC measurements.
Siglent SVA1032X NI-MAX works and doesnt - Page 1
Forum section: electronics / testgear

author: NY2KW
author_rank: Regular Contributor
timestamp: April 09, 2020, 06:40:23 pm
content: I have started writing a very simple access program in VB.NET (Visual Studio Community 2019) with NI-VISA library. I had some issues so I went back to fundamentals to check my LAN and USB connections using NI-MAX. When I connect the SVA1032X by USB and access it with NI-MAX I write/read all of the SCPI commands. If I disconnect USB and use a LAN connection (SVA connected directly to my router, same as my Desktop PC) I can access the Webserver and have control over the SSA mode. However if I try to connect by LAN using NI-MAX and the VISA Test Panel - it writes OK and reads but the Read string is always a bit corrupted :1: Write Operation (*IDN?\n)Return Count: 6 bytes2: Read OperationReturn Count: 56 bytes\00Siglent\sTechnologies,SVA1032X,SSA3PAAD3R0280,2.2.1.2.5\n

author: NY2KW
author_rank: Regular Contributor
timestamp: April 09, 2020, 06:42:14 pm
content: Sorry did'nt t get to finish the above msg. I get a Read status errorVISA: (Hex 0xBFFF0015) Timeout expired before operation completed.Any idea? I am using the default VISA Test Panle setting but I increased the timeout from 2000 to 5000.

author: Siglent
author_rank: Regular Contributor
timestamp: April 13, 2020, 09:32:46 pm
content: Hi,Jason @ SIGLENT North America here.Sorry for the delays. We don't actively monitor this site.For faster response, please contact us at info@siglent.comI just tested an SVA1032X on my network using NI-MAX (18.5.0f0) and can successfully read, write, and query without error.In I/O settings, I have a 2000 ms timeout, Send End on Writes checked, but termination is unchecked.Can you please write me at jason.chonko@siglent.com to continue the discussion?J
Current sensing - Page 1
Forum section: electronics / testgear

author: gaminn
author_rank: Frequent Contributor
timestamp: April 12, 2020, 08:09:01 pm
content: Hi,I want to measure current waveform, high side (max. 30 V), using oscilloscope (for current sensing I will probably use uCurrent). At the same I want see other signal, but ground referenced, on the same scope. Is there any inexpensive solution?

author: masterx81
author_rank: Frequent Contributor
timestamp: April 12, 2020, 08:33:53 pm
content: The only safe way is a differential probe.Less safe isolate the device. Lesser safe isolate the scope (no ground connection and maybe on battery). In this case is better that while measuring you not touch anything as any metallic part is a risk of shock.

author: gaminn
author_rank: Frequent Contributor
timestamp: April 13, 2020, 02:19:54 pm
content: There is no risk of shock for my case. The device is powered by class 2 adapter, 24 V. I just want to measure current on that 24 V rail (I can't measure it on ground rail) and I also need to display another signal that is referenced to ground on the same scope.

author: gaminn
author_rank: Frequent Contributor
timestamp: April 13, 2020, 02:56:22 pm
content: Will e.g. differential probe be useful for mehttps://www.batronix.com/shop/measurement/probes/Micsig-DP10013.html? It has 50x attenuation. uCurrent's max. output voltage is around 3 volts. If I want e.g. 1000 counts for my current measurement, then it means my scope will need to resolve 3 / 1000 / 50 = 60 uV. Is my oscilloscope msox2000 capable of this?
MOVED: Keithley 2010 Repair Attempt - Ideas Welcome... - Page 1
Forum section: electronics / testgear

author: danoki
author_rank: Contributor
timestamp: April 11, 2020, 04:52:11 pm
content: This topic has been moved to the Repair areaRepair.https://www.eevblog.com/forum/index.php?topic=237188.0
ADF4351 with onboard OLED - Page 1
Forum section: electronics / testgear

author: Cubbie
author_rank: Contributor
timestamp: April 11, 2020, 06:19:59 am
content: Does anyone know what kind of display will work with this? I dropped a pair of needle nose and cracked it. Now I might as well move it to a front panel of a enclosure. Best I can determine it is 0.96" 128X64 WhiteI2C interface using a STM32 controller chip. I have soldered some 30 pin FPC ribbon cable before with .5mm spacing so, I think I can do it. Any other info needed to replace this?
Fluke 83 no beep (sound) - Page 1
Forum section: electronics / testgear

author: txutxy
author_rank: Newbie
timestamp: April 08, 2020, 06:52:39 pm
content: Hello! First of all, congratulations on this great forum, it is very helpful.I am an engineer in Spain, I am very happy with my Fluke 83, it works like the first day, everything except the sound. Now it does not make any sound (beep, continuity, over voltage, etc).I have opened the fluke, but I do not know which integrated is in charge of sending a frequency for the sound, since I do not see a buzzer either.If someone can guide me, it would be a great help.Thanks in advance, greetings!

author: coromonadalix
author_rank: Super Contributor
timestamp: April 08, 2020, 07:15:10 pm
content: I would check the dial contacts, clean them, i have 2x 83 at my job they do funny things until i clean the contacts, i use them a lot i mean a lot, they are almost worn outThe beep is not working, or the beep engage in other functions etc ... sometime the display is stuck etc ...Before doing something check the dial, bad solders, bad contacts, good batteries, and the battery clip sometime does funny thing too, changed them twice in each meter already ...

author: retiredcaps
author_rank: Super Contributor
timestamp: April 08, 2020, 10:53:01 pm
content: Quote from: txutxy on April 08, 2020, 06:52:39 pmThe service manual for the Fluke 80 series I is online. It has schematics and everything. Page 2-9 describes what components are used and how it works.http://bama.edebris.com/manuals/fluke/87/Your piezo buzzer is on the back of the case. Check/clean the contacts.

author: txutxy
author_rank: Newbie
timestamp: April 09, 2020, 12:49:11 pm
content: Thank you very much for your advice! One question, can someone tell me where the red and black wires of the electric piezo buzzer are soldered? Because my partner skinned them a month ago to try to fix it, and he no longer remembers where soldiers are going!. I've been looking at the schematics in the manual, but it's not clear to me if the buzzer is LS1.Thank you very much again!

author: retiredcaps
author_rank: Super Contributor
timestamp: April 09, 2020, 08:22:29 pm
content: LS1 is the loudspeaker or pizeo buzzer.There are no wires going to LS1. Here is a picture from mrmodemhead.com.The bottom of the case houses the buzzer. Circled in red are 2 black contact spots. Make sure both are clean using IPA.Circled in blue is a transparent white plastic strip.The back side of the PCB has 2 solder points that make contact with two black contact spots. Make sure both of those 2 solder points are cleaned with IPA.

author: txutxy
author_rank: Newbie
timestamp: April 10, 2020, 09:29:06 am
content: OKAY! perfect! My partner was confusing me, because he put the cables to look for other points on the board where the beep sounded. I have cleaned the contacts and tinned them, but it still did not sound ... I have replaced U6 (hex inverter) and it works! All perfect! Many, many thanks to all!!

author: retiredcaps
author_rank: Super Contributor
timestamp: April 11, 2020, 12:08:43 am
content: Glad you got it working.
UNI-T Multimeter UT139C - Page 1
Forum section: electronics / testgear

author: 0xFFF0
author_rank: Regular Contributor
timestamp: April 07, 2020, 10:36:26 am
content: Does anyone know how to turn off the auto power off function? A mod is also welcome. Thanks!

author: Microcheap
author_rank: Frequent Contributor
timestamp: April 10, 2020, 10:54:19 pm
content: According to the manual, just keep the SELECT button pressed while turning on the multimeter. It will beep 5x and the APO function will be off.Turn the multimeter off and on again to restore the function.
Differential Probes for Rigol 1054Z - Page 1
Forum section: electronics / testgear

author: engrguy42
author_rank: Frequent Contributor
timestamp: March 25, 2020, 03:47:13 pm
content: Anyone have any recommendations/thoughts on a nice differential probe for a Rigol 1054Z? I noticed a McSig for $180, which is about as much as I'm willing to spend for something I would rarely use.I get so tired always worrying if something I'm probing is gonna set up a ground loop. Especially now that I'm getting boomer brain and forgetting how I wired stuffThanks.

author: 2N3055
author_rank: Super Contributor
timestamp: March 25, 2020, 04:14:43 pm
content: Go with Micsig. They are good.

author: engrguy42
author_rank: Frequent Contributor
timestamp: March 25, 2020, 04:26:49 pm
content: Thanks. As long as it's what all the cool people use I'm happy.

author: 2N3055
author_rank: Super Contributor
timestamp: March 25, 2020, 05:21:59 pm
content: Quote from: engrguy42 on March 25, 2020, 04:26:49 pmLOL.Seriously, search for a topic here on EEVBLOG, we had a detailed discussion and performance was verified as up to spec..I actually bought a 2X pack

author: stuartmp
author_rank: Contributor
timestamp: March 25, 2020, 08:09:16 pm
content: Hi Guys, What is the model number and where do I find it for $180.00

author: 2N3055
author_rank: Super Contributor
timestamp: March 25, 2020, 09:25:47 pm
content: Quote from: stuartmp on March 25, 2020, 08:09:16 pmI have Micsig DP10013 and I'we bought it in Batterfly in Italy..They are available from several places in EU..I don't know about USA.

author: Gandalf_Sr
author_rank: Super Contributor
timestamp: March 25, 2020, 09:39:35 pm
content: It's available from Amazon in the USAhttps://www.amazon.com/Micsig-DP10013-Differential-Attenuation-Tektronix/dp/B0795XQR68/ref=sr_1_3?dchild=1&keywords=differential+probe&qid=1585171093&sr=8-3#customerReviewsbut it looks like stuartmp is in Australia

author: engrguy42
author_rank: Frequent Contributor
timestamp: March 27, 2020, 11:47:32 pm
content: BTW much thanks 2N3055...Just got my Mcsig probe today. Wow. Nice.Just make sure when it's lying on the bench you don't rest your arm on it and press the x500 button by mistakeBut wow. Like the Brits would say "that's a nice bit of kit". And the slick plastic case.Such a relief to not always worry and try to figure out if there are any hidden ground loops. Now I just probe like a maniac.

author: ToddW
author_rank: Contributor
timestamp: April 10, 2020, 01:34:55 am
content: Here is another place, looks a bit cheaper and in stock.https://www.robotshop.com/en/micsig-100mhz-1300v-high-voltage-differential-probe.html?gclid=EAIaIQobChMI5ayEtNTc6AIVGqSzCh0FDwZjEAkYAiABEgIeQ_D_BwE
Siglent SDS1104X-E latest firmware? - Page 1
Forum section: electronics / testgear

author: ultrarunner2018
author_rank: Contributor
timestamp: February 07, 2020, 01:20:15 pm
content: Hey guys;I've owned my Siglent SDS1104X-E since Oct 2018, and thought I'd check the Siglent website to see if there are any updates.I did find that for the SDS1000X-E series there is an update labeled 'SDS1xx4X-E Firmware (4-Channel Models) - 6.1.33 (Release Date 05.23.19 )'I assume that the 'SDS1xxrX-E' includes the SDS1104X-E, but don't want to run the update unless I am 100% certain it is the correct one for my scope.Now the interesting part:When I checked the current software installed in my scope, it reads '7.1.6.1.25R2'This is strange, as I don't even see an update higher than 6.1.33, and I do not recall having ever updated my scope.Thanks for your helpFW

author: tautech
author_rank: Super Contributor
timestamp: February 07, 2020, 01:40:51 pm
content: 6.1.33 is the correct and latest for your scope.Check the release notes here and you can also get the firmware here:https://siglentna.com/service-and-support/firmware-software/digital-oscilloscopes/#sds1000x-e-seriesYes there was a specific upgrade that changed the OS and SW version when the later version webserver was installed.You’re fine to install .33 which only takes a minute or 2, much less than running the self cal that should be run after the firmware install.

author: ultrarunner2018
author_rank: Contributor
timestamp: February 07, 2020, 02:34:05 pm
content: Thanks.I did the update. The new sw ver is 6.1.33, and now there is a new line 'Uboot OS ver' which did not appear previously. That ver is 7.1Also, the FPGA version was updated to 2019-04-08 (was 2018-03-06).I ran the self-cal after rebooting. So I guess I'm good to go.But I did have one troubling thought as the update was installing: What if the power fails during the update? Is the scope recoverable?I didn't have any power problems, and update only took a few seconds, but next time I think I'll plug the scope into my Back-UPS before running an update.

author: sibir
author_rank: Newbie
timestamp: April 09, 2020, 02:37:37 am
content: Be aware that 6.1.33 eliminates SHELLCMD, so no more easy telnetting into your scope and -god forbid- setting the time and date etc. My new 1104 actually came with 6.1.33 and I downgraded to 6.1.26, just to be able to snoop around a little.
Amprobe AM540Eur DMM and LOW PASS FILTER? - Page 1
Forum section: electronics / testgear

author: vinlove
author_rank: Frequent Contributor
timestamp: April 09, 2020, 10:41:37 am
content: Just got this DMM, and it says it has Low pass filter for variable frequency drives.https://uk.rs-online.com/web/p/digital-multimeters/7943106?cm_mmc=UK-GDN-DS3A-_-google-_-UK_EN_GDN_Dynamic_Remarketing-_-P_A_L30D-_-&matchtype=&aud-360874232823&s_kwcid=AL!7457!3!339551719589!!my.ebay.co.uk!d!!&gclsrc=aw.ds&&gclid=EAIaIQobChMInsHm2ofb6AIVhICDBx2gXQvpEAEYASABEgIs4vD_BwEI am not so sure what is variable frequency drives in real life.Any ideas? Thanks

author: vinlove
author_rank: Frequent Contributor
timestamp: April 09, 2020, 04:49:44 pm
content: Here is youtube video for the series.https://www.youtube.com/watch?time_continue=15&v=lEV3NaCzpLc&feature=emb_logo
Newer versions of firmware than 1.13 for BSIDE ESR02? - Page 1
Forum section: electronics / testgear

author: perdrix
author_rank: Frequent Contributor
timestamp: April 05, 2020, 03:25:42 am
content: I'm creating a new thread as I don't want this to get lost in the mega-thread on ESR meters.I've successfully (after some problems) upgraded my ESR02 to firmware 1.13 rev 790.Are there any later pre-built firmware revisions (maybe with additional function) available for the ESR02?If not has anyone experience of doing their own builds for the ESR02 with (e.g.) 1.38m version? I would consider building it myself but have ZERO past experience of development in this sort of environment (PCs in C++, big iron mainframes in Assembler, but no embedded microcontrollers). In the electronics world so far I'm more an analogue and small scale digital hacker with pcbs and solder.CheersDavid

author: perdrix
author_rank: Frequent Contributor
timestamp: April 08, 2020, 11:16:29 am
content: Bump?
Matching Pad Calculation 50/75 Ohm - Page 1
Forum section: electronics / testgear

author: AllTheGearNoIdea
author_rank: Unknown
timestamp: April 07, 2020, 02:53:26 pm
content: Hi I am trying to feed an old domestic radio receiver that has a 75 ohm input. My signal generator is 50 ohms output so I have built a 75 / 50 ohm matching pad with 9.6db anttenuation factor.I want to feed the radio with 10uV impt signal at the antenna and I am trying to figure out the signal generator output level. Please could someone familiar with this check my math please.10uV = -88.75dBm for a 75 Ohm System (from conversion table)I have 9.6dB of loss in my matching pad so I set the output of my 50 ohm signal generator highe to make up for the loss = -88.75 + 9.6 = -79dBmSo in theory -79dbm at the output of the 50 ohm signal generator will provide 10uv at the output of the 75 ohm pad into my 75 ohm loadThanks regards Chris
Rigol DM3058 Continuity Buzzer - Page 1
Forum section: electronics / testgear

author: 45Overload
author_rank: Contributor
timestamp: May 04, 2016, 08:02:48 pm
content: Confirmed with Rigol that the DM3058 continuity and diode check noise is an annoying grunt sound instead of a higher pitched beep that most of us are used to. If anyone has snooped around inside a 3058 and found the source of this ugly noise, I'd be interested to know more. Naturally, the 3068 does not do this...what were they thinking? I would be nice if something in the fw could fix it. Otherwise we are stuck with a near useless faint pack-man error sound.45

author: Fungus
author_rank: Super Contributor
timestamp: May 05, 2016, 06:56:29 am
content: This thread is useless without an audio recording.

author: Muttley Snickers
author_rank: Unknown
timestamp: May 05, 2016, 07:16:06 am
content: I found one sample in a video and it does sound rather awful, I had to crank up the volume.https://www.youtube.com/watch?v=TxN6DJg5fsk&feature=youtu.be&t=134

author: Fungus
author_rank: Super Contributor
timestamp: May 05, 2016, 06:16:57 pm
content: Sounds more "Frogger" than "Pacman" to me.The only hope is if it's done using a buzzer with built-in oscillator. You can get a new buzzer with a different frequency.If it's done in software then you'll need to patch the firmware (which is be a whole project in itself).Or ... maybe you could put an Arduino inside to detect voltages on the buzzer and shift the frequency.

author: jord4231
author_rank: Regular Contributor
timestamp: April 07, 2020, 02:08:01 am
content: Did you ever do anything about that pesky buzzer I know this is an old thread but man its anoying as!
Benning MM 6-2 small review  - Page 1
Forum section: electronics / testgear

author: BASSME
author_rank: Newbie
timestamp: April 08, 2020, 03:14:51 pm
content: I bought a Benning MM6-2.I’m a troubleshooting engineer and would like a safe meter for myself for working daily on CAT IV 600V (itself is a CAT IV 600V CAT III1000V).Since I found nothing online about the inside working this was a shot in the dark.And also that is why I would like to share some inside pictures and experiences with you.My findings are the following:Of the supplied material:-Meter is supplied for around €150 in Europe.-Is supplied with leads 18AWG that are good quality-Pens have caps on them for CAT IV, and are a thick(I like the smaller ones-The meter has a separate rubber holster which also features a build in magnet(this could be a blessing or a curse, but you can remove it simple if needed)- Also a nice carrying case is supplied with the device-The 9V battery which powers the meter for approx. 200H is also included-The meter feels rugged-It is a German firm and the meter is built and tested to EN 61010-1While using:-The switch feels good.-After switching it on it always starts with a battery test.-The meter has a low impedance for eliminating some capacitive effects on measurements.(meter impedance changed from 10Mohm to 3Kohm)-It is TRUE RMS indicated but I haven’t tested that so far.-There is a nice min max mode and a delta mode, to change the “zero”-The OHMS goes from 0,1 to 10 Mohm-The continuity beeper works from under 20 ohm and is bit slow for me. The LED will also light op, which could be handy in noisy environments.-The capacitive tester works from 1nF to 10mF-The diode tester is max 1.5V which is sufficient for my use.-The amp meter goes from 1mA-10A-The meter also has a volt sensor, just to indicate AC voltage-The accuracy is not super (+-0,5%-+-2%(depending on measurement))While disassembly:-The battery compartment is a tapered screw but the meter itself is secured with 4 self-tappers-The battery is connected with a flimsy 9V snap and a tiny connector to the board.-There is shielding on the back which is connected by a spring.-There is a separate board for the lead connectors, which are connected by screws and look durable.-The main board looks neat and not to full.-There is a 11A HRC Busmann fuse for the AMP with a real resistor for the measurement.-There is input circuit with 4 PTC’s and 3 VAR’s, which seems sufficient for the CAT IV.-There is no thick film resistor like in a fluke.-While working with the resistance, diode test, capacitive test the overload protection is 1000V.

author: retiredcaps
author_rank: Super Contributor
timestamp: April 08, 2020, 10:44:56 pm
content: Quote from: BASSME on April 08, 2020, 03:14:51 pmIt's originally made by Appa Technology. It's a rebranded P3. Seehttp://www.appatech.com/en/product-553918/APPA-P-SERIES-MULTIMETERS-APPA-P3.html
DS2102E Upgrade Hack Please Help  - Page 1
Forum section: electronics / testgear

author: scopedog
author_rank: Newbie
timestamp: March 18, 2020, 02:25:17 pm
content: HelloI need a scope that can do CAN and have found a DS2102E for $449.00 usd can it be hacked to activate the advanced fetchers in it? if anyone knows any help would be appreciated. Thanks Jeff

author: scopedog
author_rank: Newbie
timestamp: March 18, 2020, 05:05:15 pm
content: does anyone know how to get the private key off the Rigol DS2102E oscilloscope?Thanks

author: tautech
author_rank: Super Contributor
timestamp: March 18, 2020, 07:56:48 pm
content: Consider the bit cheaper SDS1202X-E or if you want 4 channels the $499 SDS1104X-E both of which have free decoding.

author: skander36
author_rank: Frequent Contributor
timestamp: April 06, 2020, 10:40:49 am
content: Hi @scopedog ,I know that can be late , but if you still need help you can find here :https://www.eevblog.com/forum/testgear/rigol-ds2000e/msg1948978/#msg1948978.
CMU 200 --- upside down display?! - Page 1
Forum section: electronics / testgear

author: zitt
author_rank: Regular Contributor
timestamp: May 21, 2019, 07:29:29 am
content: For the past few weeks; there's been some lightning storms in TX so I left my CMU 200 unplugged.Today; I powered it up and the LCD display was upside down?!?Any one seen this? I couldn't find anything in google; so not sure what's going on.

author: Bicurico
author_rank: Super Contributor
timestamp: May 21, 2019, 08:49:33 am
content: Can it be that the backup battery of the PC module is flat and you lost some BIOS settings?While I have not looked at the BIOS setting of my CMU200's, I would guess that there might be an option to invert the picture.It is easy to try, so please do and let us know.Good luck!Regards,Vitor

author: f4hga
author_rank: Newbie
timestamp: July 01, 2019, 04:02:49 pm
content: Hello,It happens from time to time the same behavior with my CMU200.From my side it has nothing to do with battery as it is KO since at least a year.The first time I had the issue was when i hit CMU with my knee while standing up from my chair (CMU is in upfront position due to limited space).What I did is :gently hiting the cmu with my both palm hands on both sides ! And it worked the screen went back in position !So I redo this trick every time, not very highly technical I know. I suspect that there is either a lose connection, or a tiny switch somewhere on the main board.Let me know if you can proceed on this point.F4HGA.

author: Bicurico
author_rank: Super Contributor
timestamp: July 01, 2019, 04:07:31 pm
content: In that case it is probably the flat cable that connects the display...One pin is probably high for orientation 1 and low for orientation 2 (up-side down). Might be worth opening the PC module and reattach the flat cable.Regards,Vitor

author: bd139
author_rank: Super Contributor
timestamp: July 01, 2019, 04:27:05 pm
content: Take the screen out, turn it upside down and stick it back in again

author: DaJMasta
author_rank: Super Contributor
timestamp: July 01, 2019, 05:12:04 pm
content: Quote from: bd139 on July 01, 2019, 04:27:05 pmProbably won't work with the mounting holes being asymmetricIs this a windows based one? You often get 90/180 degree screen rotation options in display settings in windows, though it may depend on drivers. I can't imagine the LCD driver itself is screwed up from a power event, so I'd suspect software. R&S usually has a bootloader that lets you reload the firmware from a separate partition, if you don't have important data saved, could be worth a try too.

author: Till Matte
author_rank: Contributor
timestamp: April 06, 2020, 08:26:58 am
content: Revise thelcdscanning setting via flex cable interface or firmware, the display upside down problem should be solved.
HP3468A LCD contrast - Page 1
Forum section: electronics / testgear

author: gkmaia
author_rank: Frequent Contributor
timestamp: April 06, 2020, 05:25:33 am
content: Is it possible to increase the LCD contrast? Mine is quite dim.I could not find anything on it's documentation...

author: Till Matte
author_rank: Contributor
timestamp: April 06, 2020, 08:07:36 am
content: hey, it is easy, is itstn lcdor tft lcd? you just need to increase the lcd driving voltage, the lcd contrast would be better, if the Vlcd voltage is lower, the lcd would display dim. you need to adjust the lcd driving voltage to fit the lcd screen inner voltage.