hybridfree/eevblog-posts huggingface dataset:
HP Benchlink E4444A Software - Page 1
Forum section: electronics / testgear

author: George_Race
author_rank: Regular Contributor
timestamp: September 23, 2015, 01:13:29 pm
content: Does anyone know where I can download a copy of an old HP Benchlink Program? It is E4444A for Spectrum AnalyzerThanks,GR

author: calmissile
author_rank: Contributor
timestamp: April 10, 2020, 11:51:54 pm
content: Did you ever find a source for this software. Agilent says it is obsolete and no replacement is available. Would appreciate any help.Thanks.

author: Musent
author_rank: Newbie
timestamp: May 02, 2020, 12:20:48 pm
content: HelloI can help You. I have a demo version if You are interested but work only with the 859xx & 856xx family.If yes I will put it on a external link.For PSA, you have a free version Intuilink for Spectrum Analyzer available on the Keysight Web sitewww.keysight.com.Best regardsBruno

author: Dyego
author_rank: Newbie
timestamp: November 04, 2021, 04:42:54 pm
content: Hi! I am interested in the demo. Could you send me, please? my email is dyegoapm@gmail.com

author: Microwavefan
author_rank: Newbie
timestamp: March 01, 2023, 11:12:27 am
content: Hello Dear fellows and Spectrum Analyzer fans !I have read your comments and indications about this Agilent obsolete SW, and I am really wondehow to get access even to an older release like A.01.05, the minimum requirement to be entitled to use the upgrade version to available from Keysight. Because my analyzer, which I use for small private projects is an Agilent 8562EC, I presume that I can also satisfactorily run a previous release.So the question is if someone can share with me such BenchLink Spectrum Analyzer SW. This is not available for purchase, also not any previous release anymore.
Cant visualize signal on anritsu spectrum analzyer Anritsu MS2601A - Page 1
Forum section: electronics / testgear

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: February 28, 2023, 09:19:39 pm
content: Hi,today I was working in the lab with my SA and after rebooting it every signal that I would put in input wasnt shown correctly, having like 89dbm offset but no f shift.Now I see that the sram check says 'no check' and was wondering if this was my problem.Because the signal is 'shown' but in the very top, like when you overload the frotend not scaling correctly.Could be it?
Micsig's OIP probe VS Tek's THDP0200?! - Page 1
Forum section: electronics / testgear

author: scoper007
author_rank: Contributor
timestamp: March 07, 2023, 10:29:38 am
content: Looks like Micsig's optical isolated probe is ready~~Promo agressively on the internet inside China!Check the new video they posted, used Tek's differential probe to compare:https://youtu.be/aVdPs19Tn0gLooking sharp! Though price listed at 398,000 RMB for OIP200B, pocket empty~~Would like to see a real comparison VS Tek's own IsoVu™ Probe

author: thm_w
author_rank: Super Contributor
timestamp: March 08, 2023, 12:43:15 am
content: https://www.eevblog.com/forum/testgear/micsig-has-optic-fiber-and-hf-current-probes!/Listed here with no price:https://appvision.com.au/index.php?id_product=747&id_product_attribute=0&rewrite=micsig-oip-probes&controller=productTHDP0200 is $2500, so I assume your pricing is wrong?:https://www.tequipment.net/TektronixTHDP0200.html

author: nimish
author_rank: Regular Contributor
timestamp: March 08, 2023, 01:15:20 am
content: Quote from: thm_w on March 08, 2023, 12:43:15 amThat's a bog-standard differential probe.https://www.tek.com/en/products/oscilloscopes/probes/isovu-isolated-probesare what this is competing directly against.
Siemens simcenter powertester error 'soft event: internal error' - Page 1
Forum section: electronics / testgear

author: R_ZH
author_rank: Contributor
timestamp: February 28, 2023, 11:19:38 am
content: Hello,I'm doing power cycling test for a half bridge SiC MOSFET power module using simcenter powertester 1800A 12A12V.I connected the power module to the machine and fix it on the coldplate. Everytime I started power cycling, it gave an error 'soft event: internal error'. I don't really know what this error refers to. Does it mean the error inside the machine or connection error of power module.Does anybody have ideas on that?Thanks in advance!Runze
Benefits of logic analyzer probe grabbers - Page 1
Forum section: electronics / testgear

author: newtekuser
author_rank: Frequent Contributor
timestamp: February 28, 2023, 01:39:52 am
content: I've seen them used with bench top analyzers like the TLA but not with USB analyzers and was curiois to know if they add any benefit other than being able to grab onto SMD components. I.e. reduce capacitance like scope probes maybeThanks!

author: nctnico
author_rank: Super Contributor
timestamp: February 28, 2023, 01:11:22 pm
content: If anything, the grabbers introduce more self inductance. But for many measurements it doesn't matter. Actually, I use logic analyser grabbers together with an oscilloscope probe regulary to get to signals in places where an oscilloscope probe is too large.

author: thm_w
author_rank: Super Contributor
timestamp: March 01, 2023, 01:26:57 am
content: Many USB analyzers include them. I guess its just the cheapo $10 LA's that don't due to cost reasons.https://usd.saleae.com/products/saleae-logic-8But there are usually better ones like the HP grabbers or these newer cheap ones are quite good:https://www.eevblog.com/forum/testgear/affordable-micro-grabbers/

author: james_s
author_rank: Super Contributor
timestamp: March 01, 2023, 01:54:22 am
content: The reason you don't always see them is likely just about cost. The cheap ones are pretty crap too compared to stuff like HP. There is no one size fits all probe, it really depends on what you're trying to connect it to and how much space you have.

author: alm
author_rank: Super Contributor
timestamp: March 01, 2023, 02:50:28 am
content: I'd suggest getting the largest type that works for your application, purely for mechanical stability. The common mini-grabbers are great for DIP and decent for SOIC, but I wouldn't use them for anything with a finer pitch than SOIC. They are not so great for large components like TO-220 (possible ground connection). There are larger grabbers like mini grabbers for that, but they are not often used with logic analyzers. For smaller pitches there are smaller grabbers, but these are much more fragile.This page on the Sigrok wiki gives a decent overview. In my opinion it is worth paying for quality (e.g. EZ-Hook) over the cheap Aliexpress crap.As far as signal integrity, any sort of extension introduces inductance and degrades signal integrity, but I'd expect bench top analyzers to be less sensitive due to their lower input capacitance because of the resistive divider near the tip and lossy cables they use, while USB analyzers usually have much more basic probes, like a bunch of unshielded "dupont" wires. But this is not generally the reason for the manufacturer to omit them, that will be purely a costs saving.
EEVBlog 121GW multimeter and its data logging function; some "issues"? - Page 1
Forum section: electronics / testgear

author: RK_aus_S
author_rank: Contributor
timestamp: January 05, 2023, 07:19:57 am
content: HiI own an EEVblog 121GW multimeter and I'm quite satisfyed with it.But in my case, i have this issue:It seems to depend which type af microSD card is used; with some cards, the logging never starts at all, the log counter in the right upper corner doesn't appaer (and therefore no counting visible) and the whole device seems like "freezed". Diplay, buttons and dialer seem no more to work. BUT, after a while,sometimesthere appears a kind of "code" in the upper right corner (where the counter shoud count): SdE07That may probably mean "SD Card Error 07", right?With some other microSD cards it works sometimes, sometimes not. Some work almost never, some almost every time. But I have no microSD card with which it works 100% for sure.Is there somewhere I kind of compatibility list which microSD works best?I hope I've described it understandable.Kind regardsRoman

author: J-R
author_rank: Super Contributor
timestamp: January 06, 2023, 06:14:48 am
content: I have not had this issue personally.The card that comes with it is 8GB and is formatted FAT32.What cards/capacities/filesystems are you trying?

author: JDW
author_rank: Frequent Contributor
timestamp: February 27, 2023, 01:15:32 am
content: Quote from: J-R on January 06, 2023, 06:14:48 amAs of 2023, the 121GW comes with a 16GB SanDisk. So far, I too have had no issues with the meter writing data to the card during logging.
Handheld o-scopes: UNI-T UTD1050CL vs Hantek 2D72 - Page 1
Forum section: electronics / testgear

author: VSV_electron
author_rank: Regular Contributor
timestamp: February 26, 2023, 07:56:33 pm
content: I'm considering to purchase a HH portable oscilloscope in addition to a decent desktop one (for micros and general hobby stuff) and my choice is limited to the following makes and models:- UNI-T utd1050cl (200 MSa/s, 50MHz bw, 3.5" TFT, 1-ch) 2 in one, no AWG- Hantek 2d72 (250 MSa/s, 70MHz bw, 2.8" TFT, 2-ch), 3 in one- OWON HDS272S (250 MSa/s, 70MHz bw, 3.5" TFT, 2-ch), 3 in one(Maybe I could stretch to OWON HDS2102S but... read below)You may wonder what a "black horse" like UNI-T utd1050cl is doing among the better specced Hantek and OWON. Besides being black the UNI-T is also an "old horse" of at least 10 years old design compared to the much newer Hantek and OWON devices. It's also noticeably more expensive compared to the latter two.Well, to be honest I'm a UNI-T fan. Mind you, I'm not completely mesmerised by the well established red&black casing style but there is something in UNI-T devices that makes them marginally better than their competitors in the budget price range. They are generally of a better overall quality and are thoroughly designed.What I don't like in Hantek: perhaps only a smaller 2.8" screen.What I don't like in OWON/Hanmatek: shabby quality. In many YT teardows it appears that there are manually (re)soldered SMD components and those couple e-caps crudely soldered on top of the SMD components look dodgy as well. It seems to me OWON can't stop the novelty race in the process of pouring out half-baked products instead of fully completing them.On the contrary I should admit UNI-T is being too slow and conservative in the scopes area while their m-meters are great for the price.

author: Sercan
author_rank: Contributor
timestamp: February 27, 2023, 01:53:45 am
content: I understand that you have a desktop setup. If you have a good desktop oscilloscope, I believe that it looks OWON or Hantek more close to your needs. Because both 3 in one. You want to move more options with you..I am little bit fan UNI-T as you. I have termal camera, UT61E+ etc.But in this case you have new and better options with a low price.I don't have any experience with both brands. But I have a friend who owns an OWON HH oscilloscope. Of course, not everyone may feel the same. But he is very satisfied with the device. He also uses Keysight DSO9104A too. He has good experience with any kind of oscilloscope...Good luck!
Looking for obsolete TLA7PG2 A101 Termination Board to check PG Probes - Page 1
Forum section: electronics / testgear

author: calibrationfixture
author_rank: Regular Contributor
timestamp: February 26, 2023, 08:35:07 am
content: Hi to All,Looking for this A101 Termination Board. Tektronix PN (Board) 671-B146-01. There is a Predecessor named A100, but this one only covers P6470 and P6471 PG Probes. Maybe someone has it, will separate from it or can provide additional details?Calibrationfixture
HP6140A Current Source and HP 14533B Programmer - Manuals searched - Page 1
Forum section: electronics / testgear

author: Calvin
author_rank: Regular Contributor
timestamp: December 29, 2022, 12:41:28 pm
content: Hi,I habe a HP6140A Precision Current Source which requires some care and adjustment.Does anybody have a well readable Op-and Service-manual? I just got a scanned version, with quite difficult to recognize schematics and pics.Also I´d like to have infos/manual about the associated optional Programmer HP14533B.Seemingly it was just a bunch of switches and a single momentary button, as well as a couple of LEDs?Thank You in advanceCalvin

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: December 29, 2022, 12:52:35 pm
content: 14533B here:http://artekmanuals.com/manuals/hp-manuals/

author: Calvin
author_rank: Regular Contributor
timestamp: December 29, 2022, 02:40:03 pm
content: Hi,put it in my link listregardsCalvin

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: December 29, 2022, 04:08:00 pm
content: Glad you like it.I have several manuals from Artek. They are much better scans especially the schematics.

author: Calvin
author_rank: Regular Contributor
timestamp: February 25, 2023, 09:31:53 pm
content: Hi,finally and fortunately I got the 6140A running.But I´m still missing a decent readable manual. No one for help?Had to fudge with the 6130C manual (precision voltage source, almost identical in topology) which is slightly better scanned.Artekmanuals also only have the 6130C manual and they didn´t respond at all to my inquiry.regardsCalvin
LEADER LPS-163a - Page 1
Forum section: electronics / testgear

author: fberna
author_rank: Newbie
timestamp: April 08, 2020, 03:36:03 pm
content: hello,hope I am posting that in the right section...I just acquired a LEADER LPS-163a power supply and I would like to align it. Does anyone have a schematic and/or manual? Google didn't help with that...cheers

author: bji900
author_rank: Contributor
timestamp: December 04, 2022, 03:27:49 pm
content: Did you ever find the manual? I found the LPS-152 Manual, but not the 163

author: bji900
author_rank: Contributor
timestamp: December 05, 2022, 02:10:36 pm
content: I found a manual for the 160 and 161. It is in the mail, I will post schematics once I recieve the book. The PCBA is the same between them so that should be a big help.

author: bji900
author_rank: Contributor
timestamp: February 25, 2023, 09:30:11 pm
content: https://archive.org/details/lps-160-a-1-series-manualLeader DC Power Supply ManualLPS-160A/-1 SeriesModels CoveredLPS-160A, LPS-160-1LPS-161A, LPS-160-2LPS-162A, LPS-160-3LPS-163A, LPS-160-4LPS-164A, LPS-160-5
TENMA 72-3540 vs Uni-T 181A - Page 1
Forum section: electronics / testgear

author: SgtSiff
author_rank: Contributor
timestamp: February 25, 2023, 02:28:06 pm
content: Does anyone know if there are any differences between these two meters? They look identical so I imagine the Tenma is a rebrand if the Uni-T.I'd like the Uni-T but it doesn't seem to be readily available in the UK, but I can get the Tenma from Farnell.
Looking for Aeroflex 3035 & 3011 PXI drivers & software - Page 1
Forum section: electronics / testgear

author: Gribo
author_rank: Frequent Contributor
timestamp: February 28, 2023, 03:30:27 pm
content: Hi all,This is an obsolete RF analyzer from a defunct company, does anyone knows where I can get the drivers & perhaps the software package for it?Thanks

author: Gribo
author_rank: Frequent Contributor
timestamp: February 28, 2023, 04:49:05 pm
content: Thanks, found it here in an older thread
Hameg HM5530 Front end died - Page 1
Forum section: electronics / testgear

author: istvan
author_rank: Newbie
timestamp: February 25, 2023, 08:23:38 am
content: Hello everyone, I bought a defective spectrum analyzer, can someone help me with a service manual for this model or something similar or close. I can't find any documentation and I don't know where to start. At first glance, I saw that a relay on the attenuation side was missing. I skipped, injecting signal on low pass filter, about 50mV sine 60 Mhz, but nothing happens. I replaced 2 BFP420 type transistors but the same. I don't know the steps I have to follow. I am attaching some photos below. thank you
Fixing a borked Hantek DSO5102P - Page 1
Forum section: electronics / testgear

author: aijii
author_rank: Newbie
timestamp: February 17, 2016, 08:17:37 am
content: Hi guys,First up, what a great resource this forum is.My father in law has a of DSO5102P.. that doesn't work. I'm trying to fix it. It worked once, then wasn't used for a year, then now it doesn't boot, just a boot loop with a blue screen.I've read through Tinhead's extensive thread covering the hantek hacking business... connected a usb-uart to the serial por and can see the following:*** Warning - bad CRC or NAND, using default environment##### EmbedSky BIOS for SKY2416/TQ2416 #####This Board: SDRAM is 64MB; LCD display size is: 800 X 480Press Space key to Download Mode.!SD:File System init failed!Start Linux ......And then I get the following later on:UBIFS error (pid 420): ubifs_decompress: cannot decompress 2753 bytes, compressor lzo, error -22UBIFS error (pid 420): read_block: bad data node (block 195, inode 649)UBIFS error (pid 420): do_readpage: cannot read page 195 of inode 649, error -22Bus error[root@Hantek ~]#[root@Hantek ~]#[root@Hantek ~]#[root@Hantek ~]#[root@Hantek ~]# hub 1-0:1.0: Cannot enable port 2. Maybe the USB cable is bad?hub 1-0:1.0: unable to enumerate USB device on port 2[root@Hantek ~]# df -kFilesystem 1K-blocks Used Available Use% Mounted onubi0:rootfs 107572 17476 90096 16% /[root@Hantek ~]# umount: tmpfs busy - remounted read-onlyumount: tmpfs busy - remounted read-onlyThe system is going down NOW!watchdog: S3C2410 Watchdog: watchdog did not stop!Sent SIGTERM to all processesSent SIGKILL to all processesUBIFS error (pid 1): ubifs_decompress: cannot decompress 2753 bytes, compressorlzo, error -22UBIFS error (pid 1): read_block: bad data node (block 195, inode 649)UBIFS error (pid 1): do_readpage: cannot read page 195 of inode 649, error -22Kernel panic - not syncing: Attempted to kill init!...I'm hoping that the NANDflash memory isn't toast and I can recover it. The problem is, I don't have anything to recover it from. I'm struggling to find a whole NAND dump on the web that I can download and try out, just individual firmware upgrades which I read aren't enough for a complete recovery.Any suggestions ? Not sure what to do..

author: aijii
author_rank: Newbie
timestamp: February 21, 2016, 11:30:15 pm
content: Bump - are there any owners of a dso5102p that would be able to help me out please ?would be much appreciated.. haven't heard anything back from Hantek

author: supercilious
author_rank: Contributor
timestamp: February 23, 2016, 02:33:39 am
content: Check your PMs

author: jcbmca
author_rank: Newbie
timestamp: January 04, 2023, 01:43:39 am
content: hi aijii, i have the same problem with my Hantek DSO5102.Were you able to repair your DSO5102,Could you help me with mine? thank you

author: DenCraw
author_rank: Contributor
timestamp: February 24, 2023, 01:32:02 pm
content: did you solve it?
UT61E+ mv Range Floats and displays OL - Page 1
Forum section: electronics / testgear

author: Algoma
author_rank: Frequent Contributor
timestamp: February 24, 2023, 03:01:36 pm
content: Picked up a UNI-T UT61E+ on sale as an extra meter to toss around on the bench.Trouble is the mV DC/AC Range on the Dial gradually Floats up to an OL state when not connected to anything. Anyone else with this notice this behavior? Trying to figure out if this behavior is something defective, or by design of this meter's front end. Compared to my Brymen BM786 that shows proper low mV values when disconnected that respond to waving my hand anywhere in the general direction of the meter.

author: myf
author_rank: Regular Contributor
timestamp: February 24, 2023, 04:21:40 pm
content: Hi,perhaps this input has a very high impedance, directly (or almost directly) connected to the operational amplifier at xxx G.Ohm (in 10^9 Ohm - 10^12Ohm). Such an input looks more like an antenna.This is not the case with the usual multimeter inputs at about 10MOhm (=10^7 Ohm)More knowledgeable people will fill in the blanks...F. (from France).

author: AVGresponding
author_rank: Super Contributor
timestamp: February 24, 2023, 04:44:00 pm
content: Even my old Micronta 22-195 will do this, with its 10MΩ DC input impedance. More expensive (better designed, often) meters have auto-zeroing which negates this, though when you get into the GΩ impedances, they struggle to cope with the stray voltages that EMI and the Seebeck effect (thermocouples use it to their advantage) generate in their front ends.EDIT: Your UT61E+ isn't faulty, no need to worry.

author: Fungus
author_rank: Super Contributor
timestamp: February 24, 2023, 05:09:30 pm
content: So long as it measures properly and goes to zero when you short the leads then probably nothing to worry about.

author: bdunham7
author_rank: Super Contributor
timestamp: February 24, 2023, 05:38:58 pm
content: The UT61E is Hi-Z (high input impedance) on the lowest voltage range, which is a bit unusual but not unheard of. What is very unusual though is that it is also Hi-Z in the 220 mVAC range. When a meter has a nearly-infinite input impedance instead of 1M or 10M, it will do that drifting up or down thing as small random voltages and its own internal bias current charge up whatever parasitic capacitance is across the inputs. Once you connect it to anything those small charges will dissipate and it will work fine. Strange, yes but broken, no.

author: shakalnokturn
author_rank: Super Contributor
timestamp: February 24, 2023, 11:09:26 pm
content: Put something like 100M Ohm across the input, if it still drifts away consider you may have some PCB contamination.
Trying to find a DAQ / Multiplexer for about 700 Channels Impedance - Page 1
Forum section: electronics / testgear

author: katzohki
author_rank: Frequent Contributor
timestamp: February 23, 2023, 07:28:55 pm
content: We have something like a 250 pin connector which needs to be impedance checked just about every way from Sunday. This results in some 700 individual impedance measurements we need to make on this one connector. There is some overlap where 64 pins need to be checked against 9 pins and some other places.So far I've been looking at the Keysight 34980A along with it's 70 channel multiplexer modules which would give us a total of 560 inputs. Doing things the brute-force way (one incoming connection per measurement) this isn't enough connections. Now I know this probably isn't the most efficient way of doing things. Ideally if I could just connect all 250 pins into the system and measure between any two given pins that would be perfect. I've used a similar system before and I don't think this is really how the Multiplexers work unfortunately. I've also looked at some of the matrix switch modules and they all seem to be limited to being 4x something. I haven't used the matrix modules before though, so let me know if I'm misunderstanding how they can be used.Would appreciate any help you can give on pulling this off as it will really help having to sit a tech down with a DMM for days at a time!edit: I should add that I just need a single point impedance measurement for each so switching speed, samples/second etc. is not big concern.
Thinging of building Power Supply.  Lightweight advice requested. - Page 1
Forum section: electronics / testgear

author: argile_tile
author_rank: Contributor
timestamp: February 23, 2023, 05:20:26 pm
content: It is a Tektronix 420a ps failed. Threw it away: transformer costs more than a news Silgent 2000Xit WAS a high tech switching powersupply with like 4 voltages out (6 or 8 if +- included).I realize this project might "be back shelf" (not the easiest project for a hobbiest to finish in near term).I have a used Tek 420a with working PS (dead acquisition board) to work with.Can I just disconnect and measure the PS with a 50Mhz scope and mimic the results? With a few drawdown tests?Can I just buy four chinese switching modules (one for each V needed) ($12 ea, say) then "make my build all about cleaning up the signal" so it "looks as good as the other" on the 50Mhz scope? (all four would fit in the 420a easily I think)Not asking for total instructions. just broad warnings to save me allot of time, if such advice is possible. If my thinking is way out of the ball field.I'm a little familiar with power supply jargon - but totally unfamiliar with "what is sufficient to prevent frying IC". (signal smoothness, maximum drawdown allowed).I've tried to find lessons on the internetabout "what signal clean-ness is required" and "what drawdown is acceptable" for IC chips. I can't find any after long google searches. Obviously it would be too big a job to chart every chip's requirements with no schematics ever released. I need something "more in general".(tek 420a mess of a board that "supported all voltages on one 5 layer board not separately but intertwined" (making repair quite awful. i guess that's high tech!)

author: argile_tile
author_rank: Contributor
timestamp: February 23, 2023, 06:18:53 pm
content: (I could put the working PS in the 420a and sell it. Look for an easier project. I'm unsure of how hard a project this is.)
Power Design 2005 Reference bad - Page 1
Forum section: electronics / testgear

author: opa627bm
author_rank: Regular Contributor
timestamp: April 01, 2015, 06:04:53 am
content: Hi all,I have scored a PD2005 from an auction for 50$. Long story short. The oven thermostat was bad that leads to long time heating in the oven and killed everything inside. When I opened up the oven, everything was burnt.Anyway. I want to design a reference board based on LM399 or LTZ1000 but I have no clue where to start. It seems that the oven assembly also have a paired diff pair inside and some other stuff.Any suggestions?Thanks!Regards,Li

author: BarryBreaux
author_rank: Contributor
timestamp: February 20, 2023, 02:38:24 pm
content: That is a long time ago!I have the same issue on my bench now! Were you able to rebuild the oven?

author: The Doktor
author_rank: Regular Contributor
timestamp: February 20, 2023, 05:37:28 pm
content: Download the manual for a 5020, it's basically the same as a 4010 (similar to 2005?), but uses LM399 ref and an opamp to replace amplifier parts which were in oven. Should be a good starting point.

author: BarryBreaux
author_rank: Contributor
timestamp: February 21, 2023, 01:45:19 am
content: Thank you sir!

author: BarryBreaux
author_rank: Contributor
timestamp: February 21, 2023, 03:46:35 am
content: I got the manual for the 5020, but I don’t see an oven. Is there a previous version?

author: The Doktor
author_rank: Regular Contributor
timestamp: February 21, 2023, 04:33:56 pm
content: No, there's 2 versions floating around, but neither has heater. Look at the reference, the 5020 uses an LM399. The idea is to see how it's applied vs the ovened reference in the 2005.

author: coppercone2
author_rank: Super Contributor
timestamp: February 21, 2023, 11:38:23 pm
content: put a thermal fuse there, what a bad design.
uCurrent Gold Out of Stock - Page 1
Forum section: electronics / testgear

author: darkcastle
author_rank: Newbie
timestamp: September 26, 2016, 09:36:27 am
content: Anyone know if there will be more in stock or is it discontinued?

author: gsrokmix
author_rank: Contributor
timestamp: October 03, 2016, 03:55:21 am
content: I would also like to know the answer to this question. I have been checking the eShop for more than a few weeks, and they have been out of stock.Thanks!George

author: darkcastle
author_rank: Newbie
timestamp: October 03, 2016, 07:04:24 am
content: It seems like they aren't often stocked.... I don't really want to have to make my own, but I also don't want to wait months either.I'm wondering if anyone would be interested in splitting the cost to have some PCB's made since the board design is open source? I think the electronic components are about $30-40 from Mouser.

author: JDW
author_rank: Frequent Contributor
timestamp: February 13, 2023, 07:33:40 am
content: What is the 2023 status of theµCurrent Gold, now that it no longer appears in the EEVblog store?Is the following EBAY seller now the official source?https://www.ebay.com/itm/325513676996Or is everyone buying aCurrentRangernow?https://lowpowerlab.com/shop/product/152

author: J-R
author_rank: Super Contributor
timestamp: February 13, 2023, 06:40:04 pm
content: I have both. I do not recall seen a uCurrent Gold in stock for maybe a couple years. It's open source apparently, so others are probably free to make them, although not sure about the EEVblog labelling?Personally I would not bother with the uCurrent Gold, as I've not found it to be very good. Noisy and inaccurate, at least in my opinion, relatively speaking. The CurrentRanger is quite a bit better and it's particularly nice with the display option, although it won't seem to display negative values. It has an auto-range feature. It is a bit more money.Would a simple resistor as a shunt perhaps work for your project?

author: Ugnas
author_rank: Newbie
timestamp: February 22, 2023, 09:41:37 am
content: Hi,I was trying to find uCurrent device too, but it looks like it is discontinued. Because it is open source I was curious and made one by myself.I have a few spare boards. They are 1:1 to the original one: gold-plated PCB and all the resistors are 0.1% or 0.05% tolerance. Everything just like in the original design.I know CurrentRanger may be a little better, but the price is 2 times bigger and sometimes you just need a simple, cheap device in your lab.If someone is interested I placed my spare boards on tindie:https://www.tindie.com/products/elfatronics/ucurrent-gold-device/Also if you are interested in a more DYI option, you can buy just gold platted PCB and the original box:https://www.tindie.com/products/elfatronics/ucurrent-gold-pcb-enclosure-kit/
HP System DC Power Supply... exist or NOT exist? - Page 1
Forum section: electronics / testgear

author: Finderbinder
author_rank: Regular Contributor
timestamp: February 20, 2023, 04:38:07 pm
content: Hello,can anybody tell where may I find a list/catalog of such devices? Say 66xxA series and may be others... and maybe not only power supplies but other devices too.Now I try to find something by guessing digits

author: pqass
author_rank: Super Contributor
timestamp: February 20, 2023, 05:25:11 pm
content: You can download a few catalogs by year and search through them.http://hparchive.com/hp_catalogsI found a mention of the 66xx series in the 1988 catalog.See pages 7 (what's new), 37 (index by model) and 436 (detail).

author: alm
author_rank: Super Contributor
timestamp: February 20, 2023, 05:36:15 pm
content: Look forold HP/Agilent catalogs. I believe digital (GPIB) controllable power supplies were sold from the late eighties on, so I'd check a few issues in that time frame to see what new models appeared and disappeared. There's also the2002 Agilent power products catalog.

author: Finderbinder
author_rank: Regular Contributor
timestamp: February 21, 2023, 03:39:10 pm
content: Very useful materialThanks

author: Stray Electron
author_rank: Super Contributor
timestamp: February 21, 2023, 04:30:51 pm
content: IIRC in later years (1990s?) HP had a separate catalog for some (all?) of their power supplies.

author: alm
author_rank: Super Contributor
timestamp: February 21, 2023, 05:41:23 pm
content: Stray Electron, you're right, see for examplethis eBay listing. But the only online copies I'm aware of is the Agilent 2002 (and 2008) copies I already linked to. I think most of the information is also in the main catalogs, except some product selection tables and application information.
Ronan x85 calibrator? - Page 1
Forum section: electronics / testgear

author: notfaded1
author_rank: Frequent Contributor
timestamp: September 19, 2019, 01:04:32 pm
content: I'm looking for the manuals and schematic files.I just picked one up pretty cheap and it looks like a pretty nice little piece of kit. I found some links on DrKFS website but you need a password to login and I can't create an account on there to get in for some reason. Here's the download page with both pdf's I can't get to:http://drkfs.net/download.htmhttp://drkfs.net/RESTRICTED/RonanX85.PDFhttp://drkfs.net/RESTRICTED/RonanX85schematics.PDFhttp://drkfs.net/ronanx85.htmOr does anyone have a login here that can snag them for me or have the manual already? I can't wait to see how accurate this old gear is... for one thing... I really really like all the knobs on it and the industrial design look it has! The dang manufacturer doesn't even have the links for it up anywhere... that stinks! Anyhow it looks like an interesting machine.Best Regards,Bill

author: J-R
author_rank: Super Contributor
timestamp: February 20, 2023, 07:18:34 am
content: For future visitors:
TDS5054B-NV-AV too much signal noise? - Page 1
Forum section: electronics / testgear

author: newtekuser
author_rank: Frequent Contributor
timestamp: February 20, 2023, 04:51:26 am
content: Would you consider this too much signal noise? Regardless if it's from the probe compensation hook on the front panel, or acquiring signal from a DUT.Doesn't matter if I use a more expensive Tektronix P5050 500MHz probe, or a cheap $20 probe from ebay, I get the same result, bad acquisition board, or is this normal for this scope?I don't have problems acquiring signals from any of the 4 channels and SPC passes. However, if I press the "Calibrate" button and wait 5 mins for full calibration to complete (successfully mind you) and exit out of that screen, tekscope app crashes and forces me to shut down the scope.

author: xtech
author_rank: Regular Contributor
timestamp: February 20, 2023, 07:37:39 am
content: Your square signal looks fine, don't expect ideal straight line. But scope crash is definitely not ok.

author: newtekuser
author_rank: Frequent Contributor
timestamp: February 20, 2023, 07:43:42 am
content: Quote from: xtech on February 20, 2023, 07:37:39 amThanks! Actually the scope crash isn't happening anymore after reinstalling the scope from the factory restore discs.
EIP 545A option 08 Eprom - Page 1
Forum section: electronics / testgear

author: pieroandreini
author_rank: Newbie
timestamp: February 04, 2023, 09:05:12 pm
content: I recently bought an EIP 545A frequency meter with option 02 (power meter).I also wanted to have option 08 (GPIB) therefore having the diagram available I redesigned the PCB and as soon as it arrives I will start assembling ii but I also need the file to burn the Eprom U16 on CPU card.In another post where another person wanted to add option 02, someone wrote that the Eproms must necessarily all have the same firmware version, can anyone tell me if it's true even for option 08?The following EPROMs are currently present on the CPU card:U13 6500002-01HU17 6500002-02HU15 6500002-03HThe only eproms I managed to find are the ones I found here:https://www.qsl.net/n9zia/vision/but U16 seems not to be present unless it's the file U-- 6400002-03F W29 TMS2516JL -45in folder 545A CCN 2204 with Options\A105Can anyone help me?Piero

author: jonpaul
author_rank: Super Contributor
timestamp: February 04, 2023, 09:09:41 pm
content: better forum, specifc to EIPhttps://groups.io/g/EIP-Microwave/TOPICSjon

author: pieroandreini
author_rank: Newbie
timestamp: February 04, 2023, 09:26:51 pm
content: 404 page not found

author: pieroandreini
author_rank: Newbie
timestamp: February 04, 2023, 09:58:37 pm
content: Quote from: jonpaul on February 04, 2023, 09:09:41 pmfound thanks

author: jonpaul
author_rank: Super Contributor
timestamp: February 04, 2023, 11:40:55 pm
content: https://groups.io/g/EIP-Microwave/

author: pieroandreini
author_rank: Newbie
timestamp: February 19, 2023, 11:25:05 pm
content: Just tested, working fine. If somebody need it I have 4 PCB availables
Can anyone age this Crompton Parkinson Ammeter?  - Page 1
Forum section: electronics / testgear

author: Chet T16
author_rank: Frequent Contributor
timestamp: February 18, 2023, 07:06:04 pm
content: Evening all,Has anyone any idea how old the attached would be?

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: February 19, 2023, 06:41:44 pm
content: Well, if it's made in England, it must be an antique for sureSame goes for made in the USAInteresting. Cannot seem to find anything very meaningfulCountry-of-origin marking laws were first enacted in the 1880s in various European countries* to distinguish imported goods (particularly German goods) from domestic goods, and became mandatory in the United States in 1891 with the enactment of the Tariff Act of 1890 (p. 1-3).Crompton Parkinson was a British electrical manufacturing company. It was formed in 1927 by the merger of Crompton & Co. with F & A. Parkinson Ltd. The brand is now part of Brook Crompton.

author: Gyro
author_rank: Super Contributor
timestamp: February 19, 2023, 07:37:50 pm
content: It looks like an educational meter to me, the sort of thing you might find in a school lab. My guess would be 1930s-40s.I can see a red wire at the back of the movement, the insulation composition would probably be a clue.EDIT:Looking at the case construction, it's possible that it might have been cut down from a larger meter by an enterprising Physics master. A lot of school lab equipment was created by the schoolmasters in those days.No, from the later photos, that looks as if it was made for the purpose.

author: Chet T16
author_rank: Frequent Contributor
timestamp: February 19, 2023, 07:43:03 pm
content: I popped the top off to have a look inside but haven't went any deeper into it.Any clues in the pics?

author: Psi
author_rank: Super Contributor
timestamp: February 19, 2023, 08:55:12 pm
content: To me those wires don't look original.Yeah, I also think it's educational.It may have been hand assembled in very low volume for a handful of schools.Perhaps even by a professor with some woodworking skills.

author: factory
author_rank: Super Contributor
timestamp: February 19, 2023, 09:31:23 pm
content: The wires look fine to me, probably newer than you think, they were used in many schools.Voltmeter version from Crompton, in the Science museum collection.https://collection.sciencemuseumgroup.org.uk/objects/co145542/moving-coil-voltmeter-in-angled-wooden-stand-voltmeterNote the label from W. and J. George and Becker Ltd, which became Griffin & George Ltd in 1954.And another rebranded by Griffin & George (supplier of science equipment to schools & labs).https://www.ebay.co.uk/itm/185732797675The ebay one must be made after 1954 when Griffin & George Ltd were formed by a merger;https://www.gracesguide.co.uk/Griffin_and_GeorgeDavid
Are the DS1054Z sold anyone for $350? - Page 1
Forum section: electronics / testgear

author: HighMans
author_rank: Contributor
timestamp: February 19, 2023, 02:23:13 am
content: Anyone know if the DS1054Z is still being sold for $350 anywhere/if there's a good alternative for the price?

author: edavid
author_rank: Super Contributor
timestamp: February 19, 2023, 02:47:36 am
content: I don't see the DS1054Z for that price at the moment - looks like it's $419 - discount = $394.You can get the GW Instek GDS-1054B from Tequipment for $351 after discount, and it's arguably a better scope than the Rigol. You will have to negotiate to get free shipping.Of course you don't have your country flag set, I assumed you are in the US.Or this one is not marked sold:https://www.eevblog.com/forum/buysellwanted/fs-unlocked-rigol-ds1054z-oscilloscope/msg4627735/#msg4627735

author: HighMans
author_rank: Contributor
timestamp: February 19, 2023, 03:16:50 am
content: I am from the US, will set that flag now -- sorry! HahahaI'll also take a look at the scope mentioned too.

author: mwb1100
author_rank: Frequent Contributor
timestamp: February 19, 2023, 03:24:09 am
content: Quote from: edavid on February 19, 2023, 02:47:36 amFor the OP:Instek announced a while ago:QuoteSo if LAN connectivity is important (or potentially important), double check with Tequipment if the units they have on stock are with or without LAN.
Siglent SDS2104X Plus fake split screen image - Page 1
Forum section: electronics / testgear

author: Sercan
author_rank: Contributor
timestamp: February 26, 2023, 07:36:29 pm
content: Hello,I looked at all the menu items on my oscilloscope and the datasheet for a split screen view like below image. But I couldn't find any path. Split screen only exists for FFT.Anyway, is this a marketing image, or can the screen be made like this with a logic analyzer?Thanks.

author: rf-loop
author_rank: Super Contributor
timestamp: February 26, 2023, 07:52:46 pm
content: Quote from: Sercan on February 26, 2023, 07:36:29 pmYes it can.You have full freedom to adjust analog channels vertical positions and scale. And some amount limited freedom for adjust digital channels height and position.You can also adjust the height of the digital channel tracks to leave room for the analog channels for display in free area. But they can also be stacked on top of each other, because sometimes it can be more convenient to show the time correlation of an analog signal with some digital channel when they are just stacked overlaid of each other. According to the needs of the users... But of course there is not quite a complete arbitrary degree of freedom. Example, digital channels height can not separately adjust for individual digital

author: Sercan
author_rank: Contributor
timestamp: February 26, 2023, 09:31:03 pm
content: QuoteOk, how can I do that?I know I can position the analog channel as I want. Sometimes it's very useful to stack them on top of each other as you said.But, how can I make the height limit of the digital channels? I didn't find any way to do that on the menu. Vertical limits buttons not working when digital channel selected. Thanks.

author: Sercan
author_rank: Contributor
timestamp: February 26, 2023, 09:35:10 pm
content: Btw, here is my screenshot.

author: Martin72
author_rank: Super Contributor
timestamp: February 26, 2023, 09:43:45 pm
content: Hi,You know the chapter "Digital Channel Setup" in the manual ?

author: Sercan
author_rank: Contributor
timestamp: February 26, 2023, 10:02:33 pm
content: I do not believe in that! The device is new (I buyed this week) to me. But how did I not see? I think I looked at this page 5 times... Now its working like a charm! Thanks.

author: Martin72
author_rank: Super Contributor
timestamp: February 26, 2023, 10:05:17 pm
content: You´re welcome..I know the reading and overreading thing only too well...
Anyone have intermittent problems with the BM235? - Page 1
Forum section: electronics / testgear

author: tweeks
author_rank: Newbie
timestamp: February 18, 2023, 06:31:13 am
content: I love the show.. (long term fan).. and so picked up a blue branded BM235 a few years back (just after Dave offered them).. and also on his recommenddation, picked up a few $25 ANENG AN8008 meters.. The ANENG's are still working flawlessly.. but my EEVblog branded BM235 I got (with the full branded case and extra leads kit) is really starting to act quirky. Just turning it on, it will sometimes blink on and off,quickly blink through various voltage ranges, turn off & back on.. like there's some kind of serious mechanical instability or something. I swapped out the batteries just to be sure, but no change.To say this meter (one of my nicer ones) is "lightly used" is an understatement. I use it maybe once year.. since my older Rat Shack meter is always on my bench.. and one of my ANENG's are always close at hand, and faster to use (since I just wrap the leads around them and toss them in the toolbox).. ironically enough.Anyway.. anyone seen this kind of issue with the BM235s?I cna take a video of it misbehaving if anyone wants to see it.I saw the tear down of the unit with the bad SMT inductor.. I haven't done a visual inspection yet.. but I can if folks want me to.Lemme know what you all know about the long term reliability of these meters.Thanks!T.Weeks
Teardown Honeytek HK68 (Rebranded Version) - Page 1
Forum section: electronics / testgear

author: M.najari
author_rank: Contributor
timestamp: February 18, 2023, 04:06:13 pm
content: I bought a new digital multimeter with not famous brand OUBEL model number : LT98C ProI searched and can't find any information about this manufacturer.Finally I understood this is rebranded multimeter and original manufacturer is HONEYTEK and original model number is HK68C.I continued to search and found several rebranded of this model.Honeytek HK68CDigitech QM1321Powertech QM1321Oubel LT98C ProEVENTEK ET680OUTEST HK68AMalmbergs HK68ASome with USB output and some without.I was teardown itIt equipped with DM1106EN Chip.I saw another teardown photos on a Russian website with DTM0660 chipIt's Accurate with good functions and ranges.

author: Specmaster
author_rank: Super Contributor
timestamp: February 18, 2023, 05:36:22 pm
content: Just don't trust it for use on anything with high energy, such as mains supply, it really is very basic with nothing to limit the current etc should anything go wrong.

author: M.najari
author_rank: Contributor
timestamp: February 18, 2023, 05:52:08 pm
content: This is a very cheap multimeter.It's my secound DMM for low voltage DC use only.Yes,it's true. The Safety features of this DMM is very basic.

author: M.najari
author_rank: Contributor
timestamp: February 18, 2023, 05:53:22 pm
content: This is a very cheap multimeter.It's my secound DMM for low voltage DC use only.Yes,it's true. The Safety features of this DMM is very basic.
Fluke - 8x V Series UK recall - Page 1
Forum section: electronics / testgear

author: JamesGame
author_rank: Newbie
timestamp: February 17, 2023, 10:16:03 am
content: Not sure if this has been mentioned here before but I got the Gov.UK recall email yesterday:https://assets.publishing.service.gov.uk/media/63ee5950d3bf7f62edc835b9/2301-0135-product-recall-dmm.pdf

author: armandine2
author_rank: Frequent Contributor
timestamp: February 17, 2023, 10:25:04 am
content: On the face of it it doesn't seem very likely - but I have 28ii.
Looking for quality replacement croc-clips for scope ground leads - Page 1
Forum section: electronics / testgear

author: euzer
author_rank: Regular Contributor
timestamp: May 18, 2021, 04:48:54 pm
content: Has anyone got recommendations for quality replacement miniature croc-clips for the ground leads off a Keysight 3000X scope, specifically a N2862B probe?The original ones look to have a nice angular nose to more easily get in places, rather than the rounded bulbous ones I see on Farnell. Also on the original ones the narrower jaw seems to fit within the slightly wider opposing one when closed rather than the teeth biting against one another.The original spares kit maybe N2856A with the leads N2857A.I'd also consider full ground leads, but I'm aware the shank diameter of probes can be different such that ground leads aren't interchangeable.Thanks.

author: Reprobyte
author_rank: Regular Contributor
timestamp: February 16, 2023, 12:15:20 am
content: Did you ever find a clip that would fit nicely, seems a better option than buying all the replacement parts when its so easy to swap with the correct part, thanks!

author: Someone
author_rank: Super Contributor
timestamp: February 16, 2023, 06:28:11 am
content: They are a fairly generic 5mm probe, so plenty of options.Cal Test CT2710Lecroy PK1-5MM-102

author: Whitefoot
author_rank: Contributor
timestamp: February 16, 2023, 05:51:59 pm
content: I don't understand why alligator clips are still standard on scope probes. I generally replace mine with mini-hooks.
DHGate for more expensive items. - Page 1
Forum section: electronics / testgear

author: BillyO
author_rank: Super Contributor
timestamp: February 14, 2023, 10:25:58 pm
content: Just the other day I saw the SDG6022X on sale for only about $1050 + $25 DHL shipping over on DHGate. That's a great price for a 500MHz AWG (after improvements).Are the sellers DHGate reliable/reputable/honest? Unfortunately the sale is now over, but if something like that comes up again does one act or ignore?

author: BillyO
author_rank: Super Contributor
timestamp: February 15, 2023, 08:38:50 pm
content: I guess no answer is answer enough. Nobody ever bought pricier stuff off DHGate. Still, I was very tempted at that price.