hybridfree/eevblog-posts huggingface dataset:
Hantek DSO5072p vs DSO4072c - Page 1
Forum section: electronics / testgear

author: yo_nutz
author_rank: Newbie
timestamp: December 22, 2018, 05:59:30 pm
content: Hello,After trying to do my work with cheapo oscilloscopes (first got a JYE Tech DSO112A, then a SainSmart DDS140) i realised a need a proper bench oscilloscope.Since i'm doing electronics mostly as a hobby, i wouldn't wanna go above 220Eur (including shipping to EU/Romania).Right know i can get pretty easily and at a reasonable cost the Hantek DSO5072p and DSO4072c. The difference between the 2 is 10Eur so its negligible.The only downside/unknown thing for me would be if the DSO4072c would work with Windows 10 or not.I know, Rigol would be the better option, but i can't afford the difference and some OWON models i found in my pricerange seem to be very counter-intuitive in use.Since newer model isn't always better i'm curious as to your opinion. Thanks in advance

author: umbro
author_rank: Contributor
timestamp: December 22, 2018, 06:17:31 pm
content: Hello,i bougth DSO4072C about month ago and i like it so far.I think there is very little differences between DSO5072p vs DSO4072c.
For future reference- Are any parts in HP5335A 'unobtainium' ? - Page 1
Forum section: electronics / testgear

author: cdev
author_rank: Super Contributor
timestamp: December 21, 2018, 05:20:16 am
content: I was stupid and bid on a for parts or not working 5335A without doing my research but luckily was outbid. The person who got it spent $10 over my limit so I would not have gotten it anyway.For future reference. I already have a good enough 10 MHz reference that I don't need any additional ovens or oscillators. What breaks on 5335As and is it stupid to bid on untested or broken ones?I just cant spend money on an unfixable (cheaply) device. No matter how good of a deal it is.

author: MadTux
author_rank: Frequent Contributor
timestamp: December 21, 2018, 01:56:09 pm
content: Input trigger chips are mostly unobtanium in HP counters (5328A, 5335A, 5370A). But they are usually well protected with diodes, so they shouldn't fail that often. Probably much better than the dying unobtanium in 8000 series pulse/function generators.

author: cdev
author_rank: Super Contributor
timestamp: December 21, 2018, 07:49:55 pm
content: I'm also weighing the TAPR TICC, The more I read, I can see how its a great value, but I still wish it was (much) cheaper! To be truly disruptive technology it has to be cheaper.
a little teardown of  HP 5370B - Page 1
Forum section: electronics / testgear

author: madao
author_rank: Frequent Contributor
timestamp: December 22, 2018, 08:53:04 am
content: HiI got a 5370B Counter for only shipping cost.Of coruse , i checked him, before i plug it at mains.Woah, it's cool.OXCO, gold trace on PCB, wet tantal.I don't want to know, how cost it as new unit.

author: madao
author_rank: Frequent Contributor
timestamp: December 22, 2018, 08:54:31 am
content: again, restrication of image-size

author: Drewbie
author_rank: Contributor
timestamp: December 22, 2018, 11:19:25 am
content: Good score!Worth it just for the 10811, but a 5370b is sweet. I'm making do with a 5371a until I can locate a 5370b nearby.

author: coromonadalix
author_rank: Super Contributor
timestamp: December 22, 2018, 05:13:45 pm
content: If its working well dont play in it, change or adjust anything, close the panel, put it to good use

author: madao
author_rank: Frequent Contributor
timestamp: December 22, 2018, 07:05:07 pm
content: Yes, it works well, except few most used button (it make no click)I checks always newcoming equipement, because, i have bad ‎experience ( RIFA Capacitor !! )
tinycurrent - Page 1
Forum section: electronics / testgear

author: jancumps
author_rank: Unknown
timestamp: October 25, 2018, 12:53:18 pm
content: There’s an article on element14 of someone who makes modified microcurrents.https://www.element14.com/community/community/publications/blog/2018/10/25/tinycurrent-low-current-measurement-shunt-and-amplifiera BNC connector and some other changes.

author: vanthome
author_rank: Newbie
timestamp: November 29, 2018, 08:15:48 am
content: The for pointing out. The main features of this clone are certainly:1.) BNC output2.) Up to 3 times dynamic range in each of the current rangesAlso as this device was finalized after the offset voltage issue with the opamps became public, we use the ST opamp also mentioned in one of Dave's videos.Also we added unfitted pads for adding caps if there should still be oscillation in some cases.Currently it's also available through the web page:https://www.n-fuse.co/devices/tinyCurrent-precision-low-Current-Measurement-Shunt-and-Amplifier-Device.htmland on eBay:https://www.ebay.de/itm/143000468803?ViewItem=&item=143000468803

author: Rerouter
author_rank: Super Contributor
timestamp: November 29, 2018, 09:27:15 am
content: I've been after one of daves for a month, but with no new stock.... this will do for now, thanks for making me aware.

author: GeorgeOfTheJungle
author_rank: Super Contributor
timestamp: November 29, 2018, 11:31:26 am
content: Quote from: vanthome on November 29, 2018, 08:15:48 amWhat´s the difference between tinycurrent and tinycurrent-r ?

author: Rerouter
author_rank: Super Contributor
timestamp: November 29, 2018, 11:43:14 am
content: different BNC connector, I believe the R is a right angle connector for direct connection to the scope.

author: GeorgeOfTheJungle
author_rank: Super Contributor
timestamp: November 29, 2018, 12:03:09 pm
content: From the ebay ad:QuoteStill not clear to me what that means...

author: w1el
author_rank: Newbie
timestamp: December 19, 2018, 03:27:47 pm
content: Great that these devices can be bought again. I am wondering however if you have looked for another opamp with wider supply range, so that it can be powered with 3x lithium AA batteries (10.8 V) for example. This would result in even bigger dynamic range

author: kahuna0k
author_rank: Regular Contributor
timestamp: December 19, 2018, 10:00:54 pm
content: vanthome your inbox is full, cannot pm you

author: vanthome
author_rank: Newbie
timestamp: December 19, 2018, 10:15:49 pm
content: Thx for the hint, cleaned out the cruft
Rigol DG1022Z - Creating a waveform script - Page 1
Forum section: electronics / testgear

author: Gandalf_Sr
author_rank: Super Contributor
timestamp: December 18, 2018, 01:24:08 pm
content: I have a DG1022Z that I set up to produce phase-aligned sine signals at 60 Hz to simulate a power monitoring system. One waveform represents the voltage and the other the current.I need to vary the amplitude and phase-relationships of the the signals to emulate various fault conditions and I don't really see this an an arbitrary waveform, more a timed or step-controlled change to the inputs in some sort of script.Can someone please suggest / outline the best tools / approach to set this up for me?I do have a LAN connection and will be using a PC running Windows 10 to control. What I'm really trying to do is automate changes that I could make on the front panel as some kind of (ideally timed) steps e.g.1. Running in a given state2. Reduce amplitude of Ch2 to xxx and change start phase from yyy to zzz3. Go back to normal (step 1 settings)I'm reading the UltraSigma 'instructions' and it seems I could issue SCPI commands but I don't think UltraSigma allows me to created a sequenced list, am I right?

author: Gandalf_Sr
author_rank: Super Contributor
timestamp: December 19, 2018, 12:30:48 pm
content: Update.I downloaded Netcat and Ncat after reading this articlehttps://rogeorge.wordpress.com/category/scpi/but, so far, I haven't figured out the commands to get a command-promps (or any other kind) of connection to the devices. I think that Windows Powershell will do what I want.Can anyone shed any light on a) if I'm on the right track and b) details of how I should proceed?

author: voltsandjolts
author_rank: Unknown
timestamp: December 19, 2018, 12:43:02 pm
content: I have done something similar using an Agilent sig gen and GNU Octave (similar to MATLAB). I used a DOS batch file script to do the telnet wave download to the sig gen.There may be some hints for you here:https://www.eevblog.com/forum/testgear/scripting-setup-for-rigol-devices/
Solartron 7170 refuses to enter cal mode - Page 1
Forum section: electronics / testgear

author: Simon Spiers
author_rank: Regular Contributor
timestamp: December 18, 2018, 09:05:01 pm
content: I am trying to calibrate me Solartron 7150 (non plus ) using a clone of the HP82357b GPIB to USB interface and Keysight interactive IO.I have followed the instructions as the manual, plug in GPIB, power unit , insert shorting plug send command C1. This SHOULD set the unit into CAL mode (the cal annunciation should stop flashing and the display should show cal. But it doesn't! The only thing that does happen is it displays ERR 01, which is command was not recognised.Has anyone come across this before? Maybe it's an incompatibility between the later interface and the legacy ieee on the Solartron?

author: DC1MC
author_rank: Super Contributor
timestamp: December 18, 2018, 09:22:49 pm
content: Hello, your problem has most likely to do with the line terminator character used in your GPIB access software, Joerg Hau has an EXCELLENT program here for Linux access of these meters, if you'll read the nice and simple source code he discuss about it:https://www.schweizerschrauber.ch/sci/elec.html#s7150As a solution try different line terminators and/or different "Ux" commands. This is of course assuming that your GPIB interface and cable works OK.Good luck and cheers,DC1MC
Phillips PM3217 Scope : bits left over - Page 1
Forum section: electronics / testgear

author: dazz1
author_rank: Frequent Contributor
timestamp: December 18, 2018, 04:23:21 am
content: HiI have recapped the PM3217 scope I have but there are a couple of screws left over. I can't remember or find where they are supposed to go.Any suggestions??Dazz

author: dazz1
author_rank: Frequent Contributor
timestamp: December 18, 2018, 07:24:33 am
content: HiI figured out the long sleeved screw belongs in the middle of the power supply.One down.Dazz
PS bananas vs audio terminals difference - Page 1
Forum section: electronics / testgear

author: 001
author_rank: Super Contributor
timestamp: December 22, 2018, 01:16:19 pm
content: Hi!What the difference behind Power supply terminals and Speaker banana terminals?I see side hole at my PS terminal is about 1/16", but at China speakers it is about 1/8"Both are made from non-magnetic alloyCan I use speaker terminals like this for my new DIY Power Supply?

author: Rerouter
author_rank: Super Contributor
timestamp: December 22, 2018, 01:33:17 pm
content: All the banana connectors I've come across on audio gear are the same as the one on most power supplies. If it is actually a different diameter, be prepared to not be able to use normal banana test leads with it.The alloy should not effect anything, Infact I would be concerned by the fact non magnetic alloy is a selling point, I hope there aren't too many of these made out of steel, I would expect most of these to be made out of something like phosphor bronze,The only real difference is some dont have the side holes for looping wire through the terminals, but that comes down to your requirements.

author: 001
author_rank: Super Contributor
timestamp: December 22, 2018, 01:36:50 pm
content: Quote from: Rerouter on December 22, 2018, 01:33:17 pmNo. It is 4mm central hole too. But plastic nuts at Speaker terminals are shotter then plastic nutts at Power supply. Is it good/bad?Quote from: Rerouter on December 22, 2018, 01:33:17 pmYea. I see side hole at Speaker terminal is bigger

author: cdev
author_rank: Super Contributor
timestamp: December 22, 2018, 01:43:22 pm
content: Those look ideal for power supply use. Go for it!
recommend an inexpensive GPIB to rs232 or USB adaptor - Page 1
Forum section: electronics / testgear

author: 5065AGuru
author_rank: Frequent Contributor
timestamp: December 17, 2018, 05:05:09 am
content: Hi,I have a PM6666 counter with the GPIB option. I just want to get the counts into HyperTerminal as a text file. Can anyone recommend an inexpensive way to do that? I don't need to control the counter, just log the readings!Cheers,Corby

author: maxwell3e10
author_rank: Frequent Contributor
timestamp: December 17, 2018, 05:59:56 am
content: You can also build it yourself with very few partshttps://www.eevblog.com/forum/testgear/$5-usb-gpib-adapter-for-ezgpib/msg1650155/#msg1650155
Keysight MSO-X 3000 use math signal for protocol decoding - Page 1
Forum section: electronics / testgear

author: martin_nga
author_rank: Contributor
timestamp: December 17, 2018, 10:14:00 am
content: Hi @all,I'm trying to do CAN bus protocol decoding using a Keysight MSO-X 3000 series scope. I've connected CANH/CANL/GND to two channels and get a clear differential signal using math mode.However, I can't find how to use the math signal as a source for protocol decoding. I can only select analog or digital channels.Any ideas on how to do that?Thanks!

author: AndyC_772
author_rank: Super Contributor
timestamp: December 17, 2018, 10:37:34 am
content: It's not supported as far as I know. Given that your individual single-ended channels are fairly clean, I'd suggest using either one of them and see how you get on. Alternatively, an inexpensive differential probe (I use a Pico TA041) will give you a clean single-ended signal to work from.

author: 2N3055
author_rank: Super Contributor
timestamp: December 17, 2018, 11:38:00 am
content: Andy is right.MSO-X 3000 decode is in hardware and cannot decode from math. You also cannot capture something and then decide to see if you can decode something. It decodes at the time of capture, in parallel with channel, not from it...But, if you verified that your CAN bus is OK from SI standpoint, you can simply decode from one wires in the diff pair. It is supported.But as Andy said, to do it properly, diff probe is the way to go. Even cheap Micsig DP10013 (at 50x) will do the job.Regards,Sinisa

author: voltsandjolts
author_rank: Unknown
timestamp: December 17, 2018, 12:41:59 pm
content: Or a CAN bus receiver IC

author: martin_nga
author_rank: Contributor
timestamp: December 17, 2018, 01:41:46 pm
content: Thanks.Not what I hoped for but solved.
Anything about the brand: KUST Elektronik GmbH? - Page 1
Forum section: electronics / testgear

author: dzseki
author_rank: Frequent Contributor
timestamp: December 14, 2018, 12:40:10 pm
content: Hi,Our company is considering to buy a new LCR meter, and a supplier gave us a quote on a KUST LM1050B unit. Specwise it looks OK, their webpage is somewhat vague, but they claim more than 20 years of field experience, but honestly I've never heard about this brand.Are they selling original and credible products, does anyone has first hand experience with any of their units?

author: Hydrawerk
author_rank: Super Contributor
timestamp: December 15, 2018, 09:23:54 pm
content: I am not sure who manufaturesKUST LM1050B. It looks like made by Applent in China, but I could not find the exact product.

author: dzseki
author_rank: Frequent Contributor
timestamp: December 15, 2018, 09:46:52 pm
content: Thanks! Yeah, the way how the name badge applied on the faceplate a.) looks chinese b.) screams for rebadging. This is why I asked...

author: thals
author_rank: Contributor
timestamp: December 16, 2018, 10:52:30 am
content: This seems to be a rebadged Tonghui TH2826:http://www.tonghui.com.cn/en/Product/lcr/2018/0529/543.html

author: coromonadalix
author_rank: Super Contributor
timestamp: December 16, 2018, 12:19:35 pm
content: Seems a perfect copy of it for sure, for the fun ask if they sell a service manual just in case

author: nctnico
author_rank: Super Contributor
timestamp: December 16, 2018, 09:14:08 pm
content: Quote from: Hydrawerk on December 15, 2018, 09:23:54 pmOr one from ZXP. There are lots of LCR meters out there from China.

author: dzseki
author_rank: Frequent Contributor
timestamp: December 16, 2018, 10:09:58 pm
content: Thank you guys for the great replies!We have been quoted for the KUST at 4800€, as I see the Tonghui is priced similarly, so it is not a rip-off at least...

author: nctnico
author_rank: Super Contributor
timestamp: December 16, 2018, 10:20:50 pm
content: Where do you want to use it for? In this price range you can also get a vector network analyser.

author: coromonadalix
author_rank: Super Contributor
timestamp: December 17, 2018, 01:57:02 am
content: Damn thats a fortune for an lcr, could an de-5000 do the jobDo you need to get Higher frequencies than 200khz, normally 200khz would do a very good job if you have serie / parallel modes, esr ?

author: dzseki
author_rank: Frequent Contributor
timestamp: December 17, 2018, 07:37:48 am
content: Our usage would be two fold. We are building our own 1MHz C-meter with a capacitance bridge as a part of a bigger system. For calibration we have been using (since new) a HP 4280A C-V meter, and for characterizing coils for the associated circuits we have been using a HP 4261A LCR meter. The HP 4261A recently gave up, and honestly after 33 years of service it is about time to upgrade the 4280A too (although that one seems to be going strong still).So it would be reasonable to get something that can cover both measurements at once. Also we raised a requirement on testing coils at least up to 3MHz, so that points us to 5MHz LCR meters.
How to use the Acquire Function in a DMM? - Page 1
Forum section: electronics / testgear

author: DonpK
author_rank: Newbie
timestamp: December 16, 2018, 02:32:01 pm
content: I am reading about the Acquire function in a Siglent bench multimeter. I would like to connect the meter probes to a signal output in a circuit to determine when the output changes its state from low to high or the reverse. I would also like to know when the change of state occurred in terms of the meter's time-of-day clock or at least in minutes or hours after starting the acquire mode.Can this be done with the Siglent meters? This is essentially a logging function. Is this how the Acquire function works in the Siglent meters? If this logging process is possible are there any time limitations to the length of the logging period or the pulse length it can detect?
Rigol DS2000A Upgrade that worked for me today (Dec 11, 2018) - Page 1
Forum section: electronics / testgear

author: kenche
author_rank: Newbie
timestamp: December 12, 2018, 02:39:23 am
content: If you follow the instructions on the link closely it will create the correct code. Instead of creating a file on a USB drive, I entered the code using the EDIT function on the scope.https://www.bambach.biz/projects/elektro/upgrade-rigol-ds2072a-to-ds2302a/

author: clytle374
author_rank: Regular Contributor
timestamp: December 16, 2018, 08:20:59 pm
content: It was the only way I could get it to work also. Did you get the 300mhz code to work? I got 200, but not 300.
Where I can read IEC 60601 Standard? - Page 1
Forum section: electronics / testgear

author: 001
author_rank: Super Contributor
timestamp: December 15, 2018, 02:36:30 pm
content: HiI google for IEC 60601-1 and failed with all versionsWhat I do wrong? Is it a top secret?

author: petemate
author_rank: Regular Contributor
timestamp: December 15, 2018, 03:01:14 pm
content: Its not a secret, but its something that you pay for.

author: coromonadalix
author_rank: Super Contributor
timestamp: December 15, 2018, 05:37:58 pm
content: Some Googling would have give you some answershttps://en.wikipedia.org/wiki/IEC_60601https://www.iso.org/standard/65529.htmlAbstractIEC 60601-1:2005 contains requirements concerning basic safety and essential performance that are generally applicable to medical electrical equipment. For certain types of medical electrical equipment, these requirements are either supplemented or modified by the special requirements of a collateral or particular standard. Where particular standards exist, this standard should not be used alone.

author: crazyguy
author_rank: Regular Contributor
timestamp: December 16, 2018, 05:35:56 am
content: IEC standard publication is not freeYou may get a copy from(1) university library(2) buy it online, IEC webstorehttps://www.iec.ch/

author: coppercone2
author_rank: Super Contributor
timestamp: December 16, 2018, 07:55:04 am
content: i think I read a indian version of it or something before

author: coppercone2
author_rank: Super Contributor
timestamp: December 16, 2018, 07:56:23 am
content: http://www.ele.uri.edu/courses/bme484/iec60601-1ed3.0_parts.pdf

author: tszaboo
author_rank: Super Contributor
timestamp: December 16, 2018, 08:00:18 am
content: Also, the IEC standard might not be the one which is relevant for your country.I typically have to buy the NEN-EN-IEC standards, that are NOT the same, as it has extra addendum, and legally this matters a lot.

author: 001
author_rank: Super Contributor
timestamp: December 16, 2018, 11:58:06 am
content: Quote from: coppercone2 on December 16, 2018, 07:56:23 amawesome help! thank You!I`m happy and I`m gonna dance!

author: coppercone2
author_rank: Super Contributor
timestamp: December 16, 2018, 12:21:22 pm
content: its old and you should look at the power points online for the new version. once you read the previous generation you can get an idea how to do it pretty much right if you read all the summaries about it (because no one wants to read or buy this shit, and I mean no one, not even companies.. let alone re-reading the new version). Maybe a big one. i nearly went blind going though IEC documents beforethey have like a 14 page document telling you which documents you need to read to make a water heater if its in the hospital. its not a bad thing though or we would be seeing very strange things and accidents.this is iec 60601-1there is like 601's up to 10 or more. i would recommend if you are doing this to try to read all of them ... you will appreciate your effort later if you need a operation though
Siglent SDG1000X function generator "tuning"? - Page 1
Forum section: electronics / testgear

author: ebastler
author_rank: Super Contributor
timestamp: December 15, 2018, 08:29:22 am
content: I am about to pull the trigger on a modern function generator, finally...In an older thread, I found the following hint from rf-loop regarding the Siglent SDG1000X series:Quote from: rf-loop on February 17, 2018, 06:23:07 pmBut I could not find any further mention, in that thread or elsewhere, on how these "improvements" are made. Is there a hidden menu to access the limit settings? A telnet port for system-level access? Or does this require new, inofficial firmware?If the modifications are too "invasive" and cannot be reliably undone, I would not include these improved specs in my purchasing decision -- don't want to mess with the warranty right from the start... Thanks for any pointers you might have!

author: Rerouter
author_rank: Super Contributor
timestamp: December 15, 2018, 08:50:40 am
content: as he called it a mod, my guess would be its based upon tweaking the limits in the software application, which would likely have issues with your warranty,Otherwise it may be just like my SAG1021 (AWG mod for scope), where there SCPI commands are not restricted like the UI options are, e.g. +-4.0V signal offset instead of +-1.5V via the UI,Just checking on my option AWG, i can easily set periods up to 1,000,000 seconds long for my waveforms via SCPI

author: tv84
author_rank: Super Contributor
timestamp: December 15, 2018, 08:57:36 am
content: Quote from: ebastler on December 15, 2018, 08:29:22 amhttps://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1870091/#msg1870091rf-loop changes that config file where those seetings are made.

author: ebastler
author_rank: Super Contributor
timestamp: December 15, 2018, 09:11:38 am
content: Quote from: tv84 on December 15, 2018, 08:57:36 amAhh, thank you! So one first needs to install a custom firmware, to enable the Telnet port. Then edit a config file via Telnet, right?Are there further details of the config file contents and changes in the same thread? I started scanning it, but have not spotted anything yet.

author: tautech
author_rank: Super Contributor
timestamp: December 15, 2018, 09:52:28 am
content: You'll find what you need here:https://www.eevblog.com/forum/testgear/siglent-sdg1000x-waveform-generators/msg1446556/#msg1446556

author: ebastler
author_rank: Super Contributor
timestamp: December 15, 2018, 11:03:44 am
content: Quote from: tautech on December 15, 2018, 09:52:28 amThanks, tautech - that's the thread I started from. (rf-loop's post linked in my OP above is from that thread.EDIT: Ooops, no, it's not. But I had seen the thread during my search before posting.)BillB has described in detail how to modify the config file to change the model to '1062X. But I could not see any explanation on how to modify the frequency limits etc., as described by rf-loop?
DL3021 won't import the CSV - Page 1
Forum section: electronics / testgear

author: v8dave
author_rank: Regular Contributor
timestamp: December 14, 2018, 10:49:52 am
content: I can get my DL3021 to import a CSV with the LIST settings that I want to run within the Ultra Load software. I am trying to run a test on a battery to see how long it will last repeating the same sequence.It detects that there is 32 lines but the columns for the value are all blank.I first created a CVS by exporting a list using the create button to check on the data format. It's not very nice and I ended up with loads of extra spaces.This is what my CSV looks like when I view with a text editor.Code:Step,Mode,Range,Value(A),Time(s),Slew(A/us)1,CC,6A,0.02,30,0.12,CC,6A,0.15,1,0.13,CC,6A,0.02,0.5,0.14,CC,6A,0.15,1,0.15,CC,6A,0.02,0.5,0.16,CC,6A,0.15,1,0.17,CC,6A,0.02,0.5,0.18,CC,6A,0.15,1,0.19,CC,6A,0.02,0.5,0.110,CC,6A,0.15,1,0.111,CC,6A,0.02,0.5,0.112,CC,6A,0.15,1,0.113,CC,6A,0.02,0.5,0.114,CC,6A,0.15,1,0.115,CC,6A,0.02,0.5,0.116,CC,6A,0.15,1,0.117,CC,6A,0.15,1,0.118,CC,6A,0.02,0.5,0.119,CC,6A,0.15,1,0.120,CC,6A,0.02,0.5,0.121,CC,6A,0.15,1,0.122,CC,6A,0.02,0.5,0.123,CC,6A,0.15,1,0.124,CC,6A,0.02,0.5,0.125,CC,6A,0.15,1,0.126,CC,6A,0.02,0.5,0.127,CC,6A,0.15,1,0.128,CC,6A,0.02,0.5,0.129,CC,6A,0.15,1,0.130,CC,6A,0.02,0.5,0.131,CC,6A,0.15,1,0.132,CC,6A,0.02,300,0.1Anyone been able to load a CSV file into this software before?

author: v8dave
author_rank: Regular Contributor
timestamp: December 15, 2018, 02:28:34 am
content: I figured it out. It requires a TAB character in front of each value. Using tab delimiter format from Excel doesn't work.You have to manually edit the CSV file after you export it. Lucky my table wasn't too large.Code:Step,Mode,Range,Value(A),Time(s),Slew(A/us),1,CC,4A,0.02,30,0.1,2,CC,4A,0.15,1,0.1,3,CC,4A,0.02,0.5,0.1,4,CC,4A,0.15,1,0.1,5,CC,4A,0.02,0.5,0.1,6,CC,4A,0.15,1,0.1,7,CC,4A,0.02,0.5,0.1,8,CC,4A,0.15,1,0.1,9,CC,4A,0.02,0.5,0.1,10,CC,4A,0.15,1,0.1,11,CC,4A,0.02,0.5,0.1,12,CC,4A,0.15,1,0.1,13,CC,4A,0.02,0.5,0.1,14,CC,4A,0.15,1,0.1,15,CC,4A,0.02,0.5,0.1,16,CC,4A,0.15,1,0.1,17,CC,4A,0.02,0.5,0.1,18,CC,4A,0.15,1,0.1,19,CC,4A,0.02,0.5,0.1,20,CC,4A,0.15,1,0.1,21,CC,4A,0.02,0.5,0.1,22,CC,4A,0.15,1,0.1,23,CC,4A,0.02,0.5,0.1,24,CC,4A,0.15,1,0.1,25,CC,4A,0.02,0.5,0.1,26,CC,4A,0.15,1,0.1,27,CC,4A,0.02,0.5,0.1,28,CC,4A,0.15,1,0.1,29,CC,4A,0.02,0.5,0.1,30,CC,4A,0.15,1,0.1,31,CC,4A,0.02,300,0.1,

author: maukka
author_rank: Unknown
timestamp: December 15, 2018, 09:23:25 am
content: That's a strange requirement for a comma separated value file.Anyways, you can easily use a text editor to search and replace every occurence of "," with ",". Even the default Windows Notepad works if you just copy a tab beforehand and paste it in the "replace with" field.
SOLVED - Page 1
Forum section: electronics / testgear

author: 001
author_rank: Super Contributor
timestamp: December 14, 2018, 04:17:40 pm
content: Sorry I was fooled with english name of neon bulbsThanx for help

author: JimRemington
author_rank: Regular Contributor
timestamp: December 14, 2018, 04:29:05 pm
content: It is a power supply for discharge tubes.

author: 001
author_rank: Super Contributor
timestamp: December 14, 2018, 04:30:04 pm
content: Quote from: JimRemington on December 14, 2018, 04:29:05 pmdischarge tubes?why tubes charged?

author: PedroDaGr8
author_rank: Super Contributor
timestamp: December 14, 2018, 05:18:49 pm
content: I think this is an issue with non-native english trying to understand the terminology.A discharge tube is a category of lighting, the most common being the High Intensity Discharge lamps and neon tubes:There are a number of variants and the device you linked to is supposed to be a somewhat universal power supply for them.

author: 001
author_rank: Super Contributor
timestamp: December 14, 2018, 05:23:51 pm
content: Thanck You!Does it mean what it is common variable HV power supplies?

author: coromonadalix
author_rank: Super Contributor
timestamp: December 14, 2018, 10:13:10 pm
content: 001 you have the manual available read it ...https://www.bkprecision.com/products/power-supplies/1511-digital-discharge-tube-power-supply.html#docsoftYou post tons of questions here and there, you should be able to do some personal search "Google is our friend" and have your responses before posting something here.You seems to be a thread starter in many many things ?

author: 001
author_rank: Super Contributor
timestamp: December 15, 2018, 03:20:55 am
content: Quote from: coromonadalix on December 14, 2018, 10:13:10 pmIt looks wery small for its specs and I was fooled with english name of neon bulbsThanx for help
HP 6632A Question - Page 1
Forum section: electronics / testgear

author: Feral
author_rank: Contributor
timestamp: December 14, 2018, 09:18:36 pm
content: HP 6632A acquired!A question though: When I key in a voltage like 12.000, the display shows 12.001. Is this because it is showing what it measures as opposed to what I entered in? If I read the manual in depth, I would probably know this.I haven't checked it with one of my better DMMs yet. Maybe tomorrow.Edit to add: Answered my own question from the manual. Pressing vset again will show the voltage I entered.
recommendations for small footprint multi-meter - Page 1
Forum section: electronics / testgear

author: imk
author_rank: Regular Contributor
timestamp: December 14, 2018, 04:32:15 pm
content: Hello,Both my multimeters are on the blink (doggy switch and probe terminals etc) so time to buy a new one.Problem is i have very limited worktop space so every sq inch counts re its footprint, even BM235 seems TOO BIG.So any recommendations for a small footprint, good range V ac, V dc, I ac, I dc, Ohm, Cap, Hz, True RMS would be nice, with some PC data logging facility.Hi CAT rating not really necessary as i generally only do low voltage electronics.Many thanks in advance imk

author: nctnico
author_rank: Super Contributor
timestamp: December 14, 2018, 04:39:28 pm
content: Get a bench DMM. That way you can stack equipment on top of it. There is no better way to save space. Personally I like the VC8145 bench DMMs.

author: HKJ
author_rank: Super Contributor
timestamp: December 14, 2018, 04:44:08 pm
content: There may be something on my review list that fits you:https://lygte-info.dk/info/DMMReviews.htmlThe table only gives a rough size (Click header of type column to sort), but each review includes the actual size of the meter.

author: ataradov
author_rank: Super Contributor
timestamp: December 14, 2018, 06:45:19 pm
content: I use Uni-T UT-136B everywhere. They are nice meters in a small package.
Please take a look at the remote control crystal oscillator ? - Page 1
Forum section: electronics / testgear

author: 928928
author_rank: Newbie
timestamp: December 14, 2018, 06:11:33 am
content: Knowing the basic of crystal oscillators helps users ask the right questions when choosing a device for their designs.Recently, I read an article about crystal oscillator(to know more about the article, one can visit the website:http://www.apogeeweb.net/article/147.html), which talked about the functions and working principles of the crystal oscillator. I think this passage is very useful, and help me a lot when I studied the crystal oscillator.In fact, now I am meeting a problem, which is about the following picture.Is this active or passive? Can I replace it with another brand? What does 13.000 79.79 mean?It makes me confused. So if you know the answer, could you please share it to me? Thanks a lot.

author: DaJMasta
author_rank: Super Contributor
timestamp: December 14, 2018, 06:52:56 am
content: Looks like a 13MHz MEMS oscillator. You get the same pinout and size, probably wouldn't be a problem to replace.

author: 928928
author_rank: Newbie
timestamp: December 14, 2018, 07:15:53 am
content: ok thanks a lot

author: TurboTom
author_rank: Super Contributor
timestamp: December 14, 2018, 10:28:01 am
content: To me this rather looks like a plain "passive" crystal or ceramic resonator. The two identical/similar capacitors at the traces that both lead to the two adjacent pins of the PLL / clock generator chip (or whatever the small QFN is) are the load caps of the resonator, hence no "active" oscillator. I may be wrong though...

author: perieanuo
author_rank: Frequent Contributor
timestamp: December 14, 2018, 05:05:22 pm
content: Quote from: TurboTom on December 14, 2018, 10:28:01 amYou're rightEnvoyé de mon iPad en utilisant Tapatalk

author: wraper
author_rank: Unknown
timestamp: December 14, 2018, 05:10:55 pm
content: Passive 13 MHz crystal made by NDK.https://www.ndk.com/images/products/catalog/c_NX3225GA-STD-CRA-1_e.pdf
Rigol MSO5000 screen brightness....too dim - Page 1
Forum section: electronics / testgear

author: rodybmw
author_rank: Newbie
timestamp: December 12, 2018, 06:11:03 pm
content: Hi everyone. This is my first post here. I just got a Rigol MSO5104 and the screen looks very dim from straight ahead even at the 100% brightness....and even dimmer at an angle (horrible viewing angle). I have it sitting next to a Siglent SDS2000X and the screen brightness is not even comparable (Siglent is much brighter). Adjusting the "brightness" setting takes the grid from all the way off to relatively bright on the Rigol, but still not as bright as the Siglent. However, it's the "intensity" adjustment that is hardly affecting the screen brightness (if at all). Adjusting the intensity from 1% to 100% shows the brightness indicator bar changing on the screen from 1-100%, however, it's hardly making any difference at all in the actual brightness of the screen. Has anyone else experienced this on the MSO5000? It almost seems like it's either defective, or there is another adjustment hidden in another menu that I can't find. I can't see Rigol or any other company releasing a product with such a dim screen. If I ever have to use the scope outdoors (which I will) it would be almost impossible to see what's displayed.Any info or help will be greatly appreciated. Thank You

author: thm_w
author_rank: Super Contributor
timestamp: December 13, 2018, 11:13:17 pm
content: I think the manual is a bit confusing, but "intensity" means waveform intensity, which is related to intensity graded display:http://www.hit.bme.hu/~papay/edu/DSOdisp/gradient.htmQuoteA lot of test equipment/scopes don't even have screen brightness adjustment, which is quite a disappointment. Most likely Rigol left out the hardware to control the current (DS2000 didn't have it for sure). Saves a few dollars.

author: Fungus
author_rank: Super Contributor
timestamp: December 14, 2018, 02:58:30 pm
content: Quote from: thm_w on December 13, 2018, 11:13:17 pmCould there be a mod for this?Presumably it's an LED-illuminated screen but Dave forgot to show the part number in the video for those of us who were playing along at home.

author: rodybmw
author_rank: Newbie
timestamp: December 14, 2018, 06:07:45 pm
content: Quote from: thm_w on December 13, 2018, 11:13:17 pmThanks for the reply. You're right as far as the intensity setting only adjusting the intensity of the waveform (in the same way the "brightness" setting adjusts the intensity of the grid from all the way off to all the way bright). There is no way to adjust the brightness of the rest of the screen (like all the text/numbers/readouts at the top and bottom of the screen, etc.). The Siglent SDS2000X that I have sitting next to the Rigol is the same way in the sense that the "intensity" adjustment controls the intensity of the waveform, and the "graticule" setting controls the intensity of the grid with the brightness of the rest of the screen staying constant (not adjustable). The difference is that with the Siglent the overall brightness is much brighter (and the range from dimmest to brightest setting on the intensity is wider) vs. the Rigol.
Handheld DC Power supply Max 30V/3A/60W - Page 1
Forum section: electronics / testgear

author: codole
author_rank: Newbie
timestamp: December 12, 2018, 06:56:55 pm
content: any electrician living near Manchester /Liverpool in the UK?we will soon launch a new handheld DC power supply and are looking for somebody to test oursample devices.

author: amlu
author_rank: Contributor
timestamp: December 12, 2018, 08:39:31 pm
content: Electrician working in London here... don't mind having a go on it...

author: coromonadalix
author_rank: Super Contributor
timestamp: December 12, 2018, 09:26:24 pm
content: I would have loved to test it in Canada

author: codole
author_rank: Newbie
timestamp: December 13, 2018, 11:16:37 am
content: thanks guys, how can we PM for follow ups?can i post my contact info here?

author: coromonadalix
author_rank: Super Contributor
timestamp: December 13, 2018, 11:24:38 am
content: Send an pm to the guys you want to ship themClick on their name, on the following page you will see under their name an send pm link

author: Kilrah
author_rank: Unknown
timestamp: December 13, 2018, 11:44:58 am
content: He probably doesn't have enough posts to be allowed use of the PM feature yet.

author: BravoV
author_rank: Super Contributor
timestamp: December 13, 2018, 12:15:50 pm
content: Send to mikeselectricstuffhttp://www.electricstuff.co.uk/

author: codole
author_rank: Newbie
timestamp: December 13, 2018, 05:20:38 pm
content: how many posts do i need to PM others?

author: coromonadalix
author_rank: Super Contributor
timestamp: December 14, 2018, 06:38:23 am
content: I think now its 5 posts, there as been some spamming here at eevblog recently
HP 8642B display,keyboard and batery cpu problerm - Page 1
Forum section: electronics / testgear

author: EB1WB
author_rank: Newbie
timestamp: December 13, 2018, 02:32:51 pm
content: Hi, my name is Javier and I am writing to see if I could help with a problem I have with an HP 8642B radio frequency generator.The generator bought it second hand and it was working well for a while, but one day I removed the lid to check it and I found the battery that is on the processor memory card completely damaged and pouring acid through the printed circuit.I proceeded to remove this plate and remove the old battery and clean the area, take advantage of the components because I did not have any place to buy them and I wanted to try that ... The battery has not been placed because it is difficult to get it.Also remove the front keyboard to replace the lamps of the display with 4 white leds, which connect to the original place of the incandescent lamps.The problem was that when putting everything together again the keyboard is blocked and it does not work, and the display is working incorrectly ... (photos)Can someone help me and explain how I can do checks to see what is wrong with this equipment?I have a manual with partial schemes but not with real schemes to be able to follow the tracks and check tensions correctly ...I'm afraid to look at it without advice in case I can damage it more ... do not check the lines that give the information to the display.Greetings and thanks
2465B/2467B NVRAM image, different cable, CAL proceedure - Page 1
Forum section: electronics / testgear

author: jonpaul
author_rank: Super Contributor
timestamp: December 12, 2018, 12:48:20 pm
content: Hello all:Have a nice 2467B and 2465B, both were great until the dreaded TEST 04 FAIL 10/11 etcFinally got around to pulling A5 board, removing the Dallas NVRAM, placing low profine machined pin socket and copying the image.Of course both had leaky SMD electrolytics, so some minor PCB rework, replaced a few SMD resistors, etc.We now have suspicious image data, so probably failed NVRAM battery, as the newly written 1225 NVRAMs give same symptom.QUESTIONS:1. Are images and data similar for 2465B and 2467B?2. On 2465B A5 J4241 has a ribbon cable inserted, but NOT on 2467B.Why the difference? The connector interferes with the NVRAM on the machined pin socket.3. Does anybody in the EEV community have default images for the NVRAM?4. With a very fully equipped lab, but no experience, is there a steep learning curve to do a full cal?Heard its 4 hrs min and if any of the 200 steps gives out of limit, the entire CAL fails at the end to write.Many thanksJon

author: MarkL
author_rank: Unknown
timestamp: December 12, 2018, 10:43:39 pm
content: Quote from: jonpaul on December 12, 2018, 12:48:20 pmThey have the same EPROMs, so they run the same firmware.QuoteJ4241 goes to the option board(s). See interconnect diagram <13>.So, your 2465B has (or had) options installed and the 2467B does not.QuoteThere are some 2465B NVRAM images posted to TekScopes groups.io and here:https://www.eevblog.com/forum/testgear/tektronix-2465b-oscilloscope-teardown/msg406372/#msg406372And a 2467B NVRAM posted here:https://www.eevblog.com/forum/repair/tektronix-2467b-nvram-content-bin-file-inside/msg1187675/#msg1187675Search...QuoteThere is not a steep learning curve, but you do have to follow the cal instructions to the letter. Don't try to out-think them.I haven't cal'd either one of these scopes, but maybe someone else can answer. It would surprise me if you could lose everything. At a minimum, according to the manual, you can do the sub-sections separately, e.g., CAL 01, 02, 03, etc.There's a couple of people on TekScopes groups.io with extensive experience doing Tek calibrations if you want to ask over there for the details.The TEST 04 FAIL errors are from corrupt calibration data in your NVRAM. They will clear once you complete the calibration procedure. You do not need to load your NVRAM with someone else's data.
R&S CMU200 audio from speaker? - Page 1
Forum section: electronics / testgear

author: Torkrench
author_rank: Newbie
timestamp: December 11, 2018, 12:37:49 pm
content: I posted this somewhere else but I'm not sure if it has been seen. I have the B41 hardware option, but when I am in the audio analyzer, I don't get any sound from the speaker on the CMU200. I thought it should output the audio that is being analyzed from the audio input port. Is there some option that has to be turned on that I'm not aware of? I don't see anything in the manual and the VOL button doesn't do anything. I've checked inside and the coax cable from the speaker to the B41 card is connected. I've scoped the jack for the speaker coax connection as well and there's no signal there.

author: CJay
author_rank: Super Contributor
timestamp: December 11, 2018, 01:56:32 pm
content: Good question, yes it did get seen elsewhere, sometimes you have to be patient before you get an answer as not everybody logs in every day.I'm not aware (or don't remember) if you can use the internal CMU200 speaker, there are videos on Youtube that show how you can recover audio from a signal though, here's one:But it uses the audio out BNCs and not the internal speaker.

author: ps
author_rank: Regular Contributor
timestamp: December 11, 2018, 09:27:36 pm
content: According to the User Manual, the speaker is not used up to now. It may be supported in future software revisions.But it is unlikely that there will be any, because the CMU200 has been discontinued.
Philips PM 2535/023 Analog Output Option - Page 1
Forum section: electronics / testgear

author: lancelotburt
author_rank: Contributor
timestamp: December 10, 2018, 07:49:29 pm
content: Greetings!I just aquired my 1st bench meter, a working PM 2535, for $35.00. It was last calibrated in 2000 and it has the analog output option board on the rear panel. I have read all the 2525/2535 posts on this forum and everything I can find everywhere else, including the operations and service manuals, but have yet to see any info on the 2535/023 output option.Anyone know anything about it?

author: lancelotburt
author_rank: Contributor
timestamp: December 11, 2018, 08:51:28 pm
content: So, Phillips featured analog outputs on a few of their earlier meters providing an analog equivalent (scaleable) of the digital measurement, for data recording/viewing purposes.
Teledyne LeCroy T3DMM6-5-SC - Page 1
Forum section: electronics / testgear

author: tszaboo
author_rank: Super Contributor
timestamp: December 11, 2018, 09:42:39 am
content: New multimeter from Teledyne LeCroy.https://www.siglent.eu/siglent-sdm3065x.htmlWhoops, sorry, wrong link.https://eu.mouser.com/ProductDetail/Teledyne-LeCroy/T3DMM6-5-SC?qs=sGAEpiMZZMtNaRJxj63fb7sXrYxMgLwxOoC548MEEfk%3dSo it is a re-branded Siglent, sold with a huge premium, and it places it above that 34465A in price.I'm kinda speechless, no idea what this company is doing. Are they just going to give this free in a package with their high end scopes, or they are not interested in selling these at all?

author: Kean
author_rank: Unknown
timestamp: December 11, 2018, 09:52:51 am
content: Part of the reason that is more expensive is that T3DMM6-5-SC part number includes the 16 chanel scanner option

author: Kean
author_rank: Unknown
timestamp: December 11, 2018, 09:57:40 am
content: The standard one is a bit more reasonable... for a LeCroy rebrandhttps://www.mouser.com/ProductDetail/Teledyne-LeCroy/T3DMM6-5?qs=sGAEpiMZZMtNaRJxj63fb7sXrYxMgLwx%252b01sqSqh1xY=US$979 is about 860 Euro, so still way more expensive than the 689 Euro for the Siglent

author: shakalnokturn
author_rank: Super Contributor
timestamp: December 11, 2018, 06:16:40 pm
content: Still way, way, too expensive for a medium range Chinese design. Even with a Teledyne stamp on the front

author: DaJMasta
author_rank: Super Contributor
timestamp: December 11, 2018, 06:34:22 pm
content: Hasn't this exactly what LeCroy has been doing on their lower end parts for a decade or so? Surprised they didn't change the color of the UI to match their other stuff a little closer, but not surprised at all that it's happened.Also don't think it's a medium range design, and don't think that it's particularly unreasonable. I've only ever seen up to 6.5 digit meters from Chinese companies, not 7.5+, and the build quality and performance seem to be solid. While LeCroy is predictably upselling it, so their model is a worse value than Siglent's, it's still right around the ballpark of the Keysight comparable meters, and specs and performance are again comparable.They're filling out their product line so that a company or research institution can talk to them about a bulk order and they can say "we can meet all your needs!", and they've been doing that for a while. When was the last time LeCroy designed a DMM in house? Have they ever?

author: tautech
author_rank: Super Contributor
timestamp: December 11, 2018, 06:43:51 pm
content: Just a few of the rebadges here:https://www.eevblog.com/forum/chat/remember-when-siglents-logo-wasnt-ugly/msg1577215/#msg1577215
UNI-T UT372 tacho, works best off-angle  ??? - Page 1
Forum section: electronics / testgear

author: Circlotron
author_rank: Super Contributor
timestamp: December 11, 2018, 01:14:55 pm
content: Got one of these today:https://www.ebay.com.au/itm/UNI-T-1-set-Red-Gray-UT372-Digital-Display-Speed-Tester-18-4-5-6-3-4CM-N1U9-/283142056140?nordt=true&orig_cvip=true&rt=nc&_trksid=p2047675.m43663.l10137Didn't seem to work very well at all initially. Then I discovered that if you angled the beam 45 deg to the reflective surface it ran quite well. Question is - why wouldn't it work when the laser is pointing directly at (perpendicular to) the reflective surface? It showed a reading 20 or 30 times higher than actual rpm and very unsteady.As far as accuracy is concerned it's pretty good. Connected a red LED to a function generator and aimed it at the receiver phototransistor. At 90,000 rpm equivalent (5-digit display) there was way less than 1 rpm error, judging by how long it spent on 90,000 vs 89,999.