hybridfree/eevblog-posts huggingface dataset:
dsox3000t: can i turn off sinc interpolation? - Page 1
Forum section: electronics / testgear

author: JPortici
author_rank: Super Contributor
timestamp: July 27, 2017, 11:34:52 am
content: Evaluating this scope, I have a loaner next to me right now, I want to turn off sinc interpolation.. Can i do it? I can't find any option on the scope, manual doesn't mention it

author: Wuerstchenhund
author_rank: Super Contributor
timestamp: July 27, 2017, 12:58:42 pm
content: Quote from: JPortici on July 27, 2017, 11:34:52 amIf I remember right then these scopes automatically switch between Sin(X)/x and linear interpolation depending on the timebase setting.

author: voltsandjolts
author_rank: Unknown
timestamp: July 27, 2017, 01:11:33 pm
content: The Agilent 6000 series with "Display > Vectors" option off will display dots. Totally different scope of course but maybe the keyword you are looking for in menus is 'vectors'?

author: Wuerstchenhund
author_rank: Super Contributor
timestamp: July 27, 2017, 02:29:43 pm
content: Quote from: voltsandjolts on July 27, 2017, 01:11:33 pmThis is pretty much just switching interpolation on and off, but as far as I remember the decision which interpolation is used is made by the scope only.

author: MarkL
author_rank: Unknown
timestamp: July 27, 2017, 03:39:56 pm
content: I don't think it's possible to turn off interpolation. If you want to see the points without interpolation, you can download the raw waveform record and look at it externally.

author: blacksheeplogic
author_rank: Frequent Contributor
timestamp: July 27, 2017, 07:57:27 pm
content: Quote from: JPortici on July 27, 2017, 11:34:52 amNo. Also, the only documentation I found on this when I first got the scope was the FAQ.http://www.keysight.com/upload/cmc_upload/All/2000_3000_X-Series_FAQ_2011-07-07.pdf
Rigol DS 2000 upgrade codes-am I missing something - Page 1
Forum section: electronics / testgear

author: Titan 4380
author_rank: Contributor
timestamp: July 26, 2017, 11:13:32 am
content: Being a bit of a Rigol junkie, I purchased a DS2072 and upgraded it to a DS2302 usingRigolBildschirmkopieto get the mem dump and thenrigupto extract the upgrade codes. While reading through this forum, I came across lot of posts where users were trying to unsuccessfully upgrade their scopes using Riglol-103x. Out of curiosity, I uninstalled all of the options on my scope and tried to use the Riglol web app to generate new codes. None of the codes worked and I keep getting the error "license is unavailable". Below is a list of the codes as provided by Rigup which work wonderfully. It appears that you can enter any 4 digit device option code into the Riglol web app and it will still produce a series of codes (that don't work);Rigup codes from my scopes memory dump;NSEH: 8KBRBBH-Q9BFYBY-T5BKQYB-6VC67VM All options, no bandwidth upgradeNSER: HQEBNFRGES5XB5MVMWMND5EG948M All options, bandwidth 100 MHzNSEQ: SNC368R67YCJ3X-HYBDQ2Q-QN8BBVM All options, bandwidth 200 MHzNS8H: KRXUWUV-N8MDK4E-5GERZWV-DJ5QL5M All options, bandwidth 300 MHzWhy are the riglol device option codes so different from what rigup displays?I am looking at the purchase of a DS4000 series and I was hoping to use the Riglol web app to upgrade the scope, so getting an answer on this is pretty important to me.
PC (Windows) Spectrum Analyzer Software for Rigol DS2000 series ? - Page 1
Forum section: electronics / testgear

author: thomas007
author_rank: Newbie
timestamp: July 27, 2017, 01:47:11 pm
content: Hello,for DS1000 I found a nice software project to do FFT with PC:http://hackaday.com/2015/09/22/a-better-spectrum-analyzer-for-your-rigol-scope/Is there any comparable project for DS2000 series (esp. DS2072A) ?Or could the project above be modified for DS2000 wihtout much effort ?( I do not still own the scope, still collect reasons to buy one, and PC FFT would be a great one :-)

author: Wuerstchenhund
author_rank: Super Contributor
timestamp: July 27, 2017, 02:31:58 pm
content: If FFT is important for you wouldn't it make more sense to just buy a scope which offers FFT that doesn't suck?Just saying...

author: Mechatrommer
author_rank: Super Contributor
timestamp: July 27, 2017, 03:22:41 pm
content: Quote from: thomas007 on July 27, 2017, 01:47:11 pmnot comparable but... you may try...http://www.soasystem.com/download/visadso/... test on DS2000 had been done on limited scale because the developer doesnt own DS2000 so he had to ask DS2000 owner for compatibility back and forth... you may join the development team by helping them report compatibility issue for DS2000, by contacting the provided email.Quote from: thomas007 on July 27, 2017, 01:47:11 pmiirc, its open source. so anytime you can inject compatible code for communication with the DS2000...

author: hendorog
author_rank: Super Contributor
timestamp: July 27, 2017, 06:57:01 pm
content: There is an application you can download from Rigol called UltraScope.It will do very fine detailed FFT on the entire memory contents if you choose that mode, but it needs to download that memory first so isn't realtime.

author: CustomEngineerer
author_rank: Frequent Contributor
timestamp: July 27, 2017, 10:43:56 pm
content: Quote from: thomas007 on July 27, 2017, 01:47:11 pmPyDSA can be changed to work with DS2000A. I managed to do it in a couple of hours one evening of playing around a while back. Essentially you need to change the calls that grab the data from the scope to do things the way the DS2000A expects them, as opposed to the way the DS1000Z expects them. I used both scopes programming guides to figure out how to do it. I'm pretty sure I don't have the code anymore, but it's not difficult if you are really interested in doing it.Edit: Now that I think about it, at the time I played around with it, I think PyDSA only worked on the DS1000E series scopes, so I would have used the DS1000E and DS2000A programming guides to work it out. However I believe since then someone added support for the DS1000Z, so it may work closer to how the DS2000A needs now, but since I've never played with a DS1000Z I couldn't say for sure.

author: thomas007
author_rank: Newbie
timestamp: July 29, 2017, 03:42:07 pm
content: Thanks for all Info and hints.Yes my firts idea was also to modify PyDSA for DS2000.Just ordered my DS2072A, I'll try what is possible with external FFT.I saw Rigol als offers nice 'real' Spectrum Analyzers ...
SAIKE 852D+ Iron Solder Soldering Hot Air Gun for $45 - Page 1
Forum section: electronics / testgear

author: BER546
author_rank: Newbie
timestamp: July 25, 2017, 09:18:05 am
content: Stumbled upon the SAIKE 852D+ Soldering Iron with a good price. Thought you guys will like it.https://www.sainsmart.com/saike-852d-hot-air-gun-digital-soldering-iron-2-in-1-system.html
Leo Bodnar programmable GPSDO - Page 1
Forum section: electronics / testgear

author: DG5SAY
author_rank: Contributor
timestamp: January 04, 2017, 08:39:01 am
content: Hi,has anyone ever tested this part:http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=107&products_id=234

author: Roy D. Mercer
author_rank: Contributor
timestamp: May 28, 2017, 09:22:42 pm
content: I have one of these and it works great. It's the most affordable way I can think of to acquire a low phase noise reference not to mention the flexibility it has. The output is CMOS but many times you can find a Standford Research Systems FS30 or FS35 on eBay for a really good price. These units add very little phase noise and give you a sine wave output.

author: K1FPV
author_rank: Contributor
timestamp: July 25, 2017, 10:06:26 pm
content: I've had one now for a little over 9 months. It works as well as my HP58503A or my Spectracom Ageless Oscillator. The output is clean, and for the price, you can't go wrong. Yes you can get one of the Chinese GPSDO's from BG7TBL for a little less, but the noise is less out of the Leo Bodnar GPSDO, plus you can program the GPSDO to produce a different reference frequency. I love mineBill, K1FPV
HP 35660A  alternative - Page 1
Forum section: electronics / testgear

author: MarkoAnte
author_rank: Regular Contributor
timestamp: July 25, 2017, 08:32:24 am
content: Hi,does anybody know if there are some alternatives to HP 35660A / HP 3561A? Maybe some usb based pc thing? I need it to go form DC-100Khz ish and it needs to have good resolution/memory depth so I could do better measurements then with a scope (that is 8bit 2Mpts memory depth).Best regards,Marko

author: bozidarms
author_rank: Regular Contributor
timestamp: July 25, 2017, 10:39:19 am
content: Hi Marko,i can recommend a HP 3569A - portable hand-held Real-time Dynamic Signal Analyzer.I know, it is very old instrument, but one stand-alone, incredible sensitive, accurate and reliable analyzer.Technical characteristics are classes better than proclamated.Among other things, for me is the most fascinating the ability to measure levels down to almost nV range, very useful forevaluating a noise floor in audio equipment - you can get precision and consistent results on HP 3400A level, if not better.One almost forgotten gem!Regards

author: tec5c
author_rank: Frequent Contributor
timestamp: July 25, 2017, 01:57:41 pm
content: DSA's aren't cheap. Period.Any "usb based pc thing" is going to have poor specs, though perhaps it will suffice for your needs? Take a look at thishttp://www.adlinktech.com/PD/web/PD_detail.php?cKind=&pid=1297&seq=&id=&sid=&source=&utm_source=&category=Data-Acquisition_USB-DAQI would opt for a 35670A or SR780 (both can be found on eBay, every now and then for a very good price) if you're serious about low frequency measurements.

author: MarkoAnte
author_rank: Regular Contributor
timestamp: July 26, 2017, 08:11:54 am
content: @tec5c the problem is that there just don't seem to be many DSA on sale here in EU. When one come on Ebay they go for quite a lot. The one that came up (almost a year ago) was a HP 3561, with 1 bad ram (according to the error code). It starter at 200 euro-sish and ended up above 1400 euro in the last seconds. Ty for the ADLINK link, I will look at it but it does not seem like what I'm after.Basically I want to do a FFT of the current into a 3 phase PFC that runs at a variable switching frequency, with the maximum being 50 kHz. With a sampling frequency of 128kS/s it seems on the low side. Also the input range is wrong.

author: tszaboo
author_rank: Super Contributor
timestamp: July 26, 2017, 09:31:52 am
content: You did not tell us your budget.

author: MarkoAnte
author_rank: Regular Contributor
timestamp: July 27, 2017, 03:58:48 pm
content: I was thinking around 1000 Euros, but this is flexible a bit. I'm mostly asking because I don't want to buy a 20 year old machine and find out that for a comparable price I could get a newer (maybe usb) device.
Which e-commerce online would be your most favorite choice to buy oscilloscope? - Page 1
Forum section: electronics / testgear

author: jacklee
author_rank: Regular Contributor
timestamp: July 25, 2017, 10:44:59 am
content: The reason why I start this vote is due to I think which may help others to save their precious time!I had been brought scopes from Amazon, Aliexpress and eBay. From my experience, I can get the best service from Amazon, but you may pay the most at there even for the totally same item. Conversely, you can buy a scope from Aliexpress at the very cheap price. In fact, mostly scope condition is no difference. I did also find cheaper items from eBay, but I think I can find cheaper at Aliexpress.I know there must be have it's own business reason, but what let me confused is I'd ever found a same seller sell scope at this three platforms, but he set the different price, amazon is the most expensive. I don't know why, maybe amazon costs more fee.I also very want to know which e-commerce platforms you would often visit, and the reason? I think it may help others to make their choice.So click to make your vote and see results:http://www.easypolls.net/poll.html?p=5977156ce4b07f76ff285b3bIt's also very welcomed to leave any comments about this vote. Very thank you for your voting and supports.
how do i deal with hardcopy (*.HCP) files? want to convert them / print them - Page 1
Forum section: electronics / testgear

author: JPortici
author_rank: Super Contributor
timestamp: July 24, 2017, 05:01:33 pm
content: Hi,so my lecroy 7200A can make a hardcopy of what's on the screen (hardcopy button)it can send it to a printer over GPIB, parallel port or serial port.It can also send one to a floppy drive. great! but how can i view it? maybe convert it into something more like an image filecan't find much...though opening an HCP file shows a lot of text, probably coordinates (makes sense since it is supposed to be used by a plotter)

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 24, 2017, 05:29:11 pm
content: If it is HPGL google for HPGL converter, lots of possibilities.

author: JPortici
author_rank: Super Contributor
timestamp: July 24, 2017, 06:19:29 pm
content: thanks, Since posting i was already investigating that option. I have a list of several plotters to choose from, most of them from HP. and i did select an HP one so it should be an HPGL but no viewer / converter i tried could open it. i'll go on investigating..

author: JPortici
author_rank: Super Contributor
timestamp: July 24, 2017, 06:33:58 pm
content: and not much sooner i found..http://service-hpglview.web.cern.ch/service-hpglview/download_index.htmlthanks cernbut didn't render the image properlyhttp://www.cenon.info/for me, under osx, did the trick

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 24, 2017, 07:59:34 pm
content: Great, another challenge defeatedOn to the next one as always...
DG1022Z - What's the level of arbitrary waveform when waiting for a trigger? - Page 1
Forum section: electronics / testgear

author: ivonenand
author_rank: Contributor
timestamp: July 23, 2017, 02:24:39 pm
content: Hi guys,I'm waiting for a delivery of a Rigol DG1022Z arbitrary function generator. I'll be using it for testing surge protection capabilities of power supplies. Basically I'll hook it up as a reference for a linear power supply stage and have it generate pulses (Say 14V -> 30V for 100ms -> 14V). I'll program the waveform into the .rdf file and then trigger the generator on the external input (via a button). My question is, what will the output level of the generator be, when it will be waiting for a trigger? I need the test subjects running for a few minutes, before the surge happens so I need the output of the DG1022Z to be at a defined DC level, so that my equipment is powered on while waiting for a trigger.Any experiences?Regards,Ivo

author: 2N3055
author_rank: Super Contributor
timestamp: July 23, 2017, 04:40:25 pm
content: Hi Ivo,in order to do this you select your ArbWaveform, put gen in Burst mode, select N-cycle, set cycle to one, and there will be "Idle level" setting which is what you are asking for.. Please, do yourself a favour, if you didn't already, download a manual and learn it well... These instruments are very powerful but complicated...Also, DG1022Z has max output (at 50 Ohm) of 10V P-P.. High-Z will be more, but still no 30V... for voltages you are mentioning you would need a 2X or 3X wideband amplifier after AWG...How fast do the edges have to be ? It seems to me that a programabile PSU like Rigol DP711 (30V/5A) or DG712 (50V/3A) would be a better fit for your purpose.. They have timer function to generate a number of voltage/current steps, and external trigger IN/OUT, and also RS232 for remote programming... They also measure output current, voltage and power...There are plenty of these kinds of PSU from other manufacturers too..Regards,Sinisa

author: alm
author_rank: Super Contributor
timestamp: July 23, 2017, 05:03:09 pm
content: Could you add 10 V DC offset in addition to the arbitrary signal to increase the maximum output level?If you need more DC offset, if the output of the AWG is floating (as is the case with many Agilent/Keysight AWGs, not sure about Rigol), then you could put a DC source (e.g. power supply) in series with the output.If it is not, then you could AC couple the output and use a resistive adder to add a DC offset (see attached LTSpice schematic). This is more complicated, and only works if you do not need a very low frequency response and the load is high impedance (a 10 MOhm DMM in this case). If the load is low impedance, then you would need some way to buffer the output.
Old oscilloscope  - Page 1
Forum section: electronics / testgear

author: howitsmadewatcher
author_rank: Newbie
timestamp: July 23, 2017, 03:15:24 pm
content: Bell & howell schoolsSent from my iPad using Tapatalk

author: Gyro
author_rank: Super Contributor
timestamp: July 23, 2017, 03:28:40 pm
content: Yep, looks like it. Just like your other post was a box of tubes. Maybe you want to try adding some text to your posts next.

author: Fungus
author_rank: Super Contributor
timestamp: July 23, 2017, 04:28:33 pm
content: Quote from: Gyro on July 23, 2017, 03:28:40 pmMaybe even put them in the right section, not Dave's video section.

author: shteii01
author_rank: Frequent Contributor
timestamp: July 23, 2017, 05:42:32 pm
content: How do I add this dude to my ignore list?

author: alm
author_rank: Super Contributor
timestamp: July 23, 2017, 06:34:55 pm
content: Go to your profile by clicking the profile link at the top. Then hover over the 'modify profile' button, choose buddies/ignore list, and then edit ignore list.

author: Cyberdragon
author_rank: Super Contributor
timestamp: July 23, 2017, 06:45:03 pm
content: Please don't post just random photos with no context. This is not 4chan...

author: Gyro
author_rank: Super Contributor
timestamp: July 23, 2017, 06:55:19 pm
content: It's ok, he's gone.
EBay 8-Digit LED Frequency Counters - Page 1
Forum section: electronics / testgear

author: German_EE
author_rank: Super Contributor
timestamp: July 23, 2017, 05:14:48 pm
content: My search fu is failing me. Somewhere on the EEVBlog board, possibly in this section, is a thread discussing the cheap 8-Digit frequency counters that are on EBay. I can't find it.http://www.ebay.com/itm/0-1MHz-1000MHz-1GHz-RF-frequency-meter-Digital-8LED-frequency-Counter-Tester-R-/172262211246?hash=item281ba0beae:g:iNAAAOSwBahU2OLtCan anyone assist?

author: tablatronix
author_rank: Regular Contributor
timestamp: July 23, 2017, 05:31:24 pm
content: https://www.eevblog.com/forum/projects/ten-dollar-pic-100khz-2-4ghz-frequency-counter-thread-2/There is an original thread also linked in fist postYou will find much more discussions on ham boards for that module.

author: German_EE
author_rank: Super Contributor
timestamp: July 23, 2017, 06:31:40 pm
content: Got it, thanks!
Agilent U1242A multimeter with space-themed skin? - Page 1
Forum section: electronics / testgear

author: floobydust
author_rank: Super Contributor
timestamp: July 20, 2017, 07:59:53 pm
content: Saw this Agilent U1242A multimeter for sale on eBay.It has a space-themed skin. What is that ?If we could get skins for the EEVblog multimeter, maybe Dave's pic... na some hotties maybe lol

author: shteii01
author_rank: Frequent Contributor
timestamp: July 21, 2017, 01:23:57 am
content: I got 4 skins with U1252B, but my meter is from 2012. They came in a sealed bag with installation instruction. Here is the first paragraph from the installation instruction:"It is our pleasure to offer-not one, but four-FREE limited edition, thematic skins for your new handheld multimeter."The sealed bag with the skins has the part number on it: U1252-84326It sounds like 1 skin is or was standard accessory.

author: Fungus
author_rank: Super Contributor
timestamp: July 21, 2017, 09:07:43 am
content: Quote from: floobydust on July 20, 2017, 07:59:53 pmOne of the coolest multimeters ever...?

author: CJay
author_rank: Super Contributor
timestamp: July 21, 2017, 09:25:10 am
content: Quote from: floobydust on July 20, 2017, 07:59:53 pmWell now that's a whole heap of awesome and a nice business opportunity. I wonder if one of the guys who print vinyl fascias for knackered old CB radios would be able to do that...

author: tablatronix
author_rank: Regular Contributor
timestamp: July 23, 2017, 05:20:06 pm
content: I came across a web service the other day that will skin anything, you submit a template and graphics, not sure where I saw it. They just print vinyl and plotter cut it, like car wraps, the tech is getting more prevalent and cheap. Ot sure if they are laser cutting yet though.
Rigol DS1000Z Series Triggering/Averaging/Data Acquisition  - Count Averages - Page 1
Forum section: electronics / testgear

author: PeLa
author_rank: Contributor
timestamp: July 23, 2017, 01:34:40 am
content: Hi there,I am about half way through adapting a python script that I had written for a Tektronix DPO3000 to work with the DS1000Z series. It automatically sets up the scope to certain parameters, acquires, averages, transfers data, oversamples and plots.I am using the pyvisa library and just send the commands specified in the programming guide. So far so good.I noticed what appears to be a severe limitation for my application:When I set up a certain number (let's say 512) of desired averages on a Tektronix scope (ACQuire:NUMAVg 4) and set the scope to averaging, I query the scope every now and then (ACQuire:NUMACq?) to find out whether the desired number of averages have finished acquiring, so that I can initiate the data transfer.When I try the same thing on the Rigol, I send :ACQuire:AVERages 512 to set up 512 averages and set the scope to averaging. However I could not find any way to determine whether the averaging is complete, i.e. 512 averages have been acquired... and for my application I need to know that.I have read the programmers manual up and down and have looked in lots of places on the net but could not find a way to get this to work.Hence my questions: Has anyone managed to do that in the past? Does anyone have a good idea on how to achieve that?Thanks in advance!Peter

author: PeLa
author_rank: Contributor
timestamp: July 23, 2017, 10:12:17 am
content: Update: After a good night's sleep, I found a way to display the number of "counts" for a given item on the screen in statistics mode::MEASure:STATistic:MODE DIFF:MEASure:STATistic:ITEM NPULSES,CHANNEL1The item type does not have to be NPULSES, it can also be any(?) other statistics item.This will display the current value, average value, deviation and most importantly, the COUNTS. That's exactly the value I need.However, I haven't yet found a way to ask for the counts in a command... there has to be a way!Anyone?

author: PeLa
author_rank: Contributor
timestamp: July 23, 2017, 12:46:39 pm
content: Alright. I've tried absolutely everything I can think of. Can't be done. Filing it as a bug.
RIGOL and SIGLENT .csv files - Page 1
Forum section: electronics / testgear

author: IvoS
author_rank: Frequent Contributor
timestamp: July 22, 2017, 05:47:06 pm
content: I captured some waveforms using my Rigol DS2072A scope and saved them as .csv files to USB flashdrive. I am trying to get those captured traces to my Siglent generator using EasyWave program that come with my Siglent SDG5082. The (Rigol) .csv file will not open in Easywave program because of this error: "Single value or 1D array required". Is there a way to capture and load waveforms between these two instruments?
PCB or panel to oscilloscope probe connector. - Page 1
Forum section: electronics / testgear

author: harrimansat
author_rank: Regular Contributor
timestamp: July 21, 2017, 08:16:52 pm
content: Hi, somebody knows where I can find a coaxial female for a oscilloscope probe like this, or something similar.http://qservice.tv/vpasp/shopexd.asp?id=11793&bc=noThanksRegardsMiguel

author: cs.dk
author_rank: Unknown
timestamp: July 21, 2017, 08:37:50 pm
content: I would be very surprised iftme.eudoesn't have them.

author: alm
author_rank: Super Contributor
timestamp: July 21, 2017, 09:31:51 pm
content: Keep in mind that these are not standard parts. Each probe can be a slightly different size. Tektronix had multiple sizes (2.5mm, 3.5mm and 5mm) for different probes. But none of them would fit a HP/Agilent probe.A universal but bulky alternative is to convert the probe tip to BNC, and use BNC panel or PCB connectors. Decent probes will either ship with probe tip to BNC adapters or will have them available as optional accessories.
BK Precision 9185. - Page 1
Forum section: electronics / testgear

author: IAmBack
author_rank: Regular Contributor
timestamp: July 21, 2017, 06:29:27 pm
content: Hi.I need diagram of this PSU. I asked about it in repair forum (sorry for re-posting), but it's rather urgent, as I have to decide till monday if I send it back or keep and try to repair.
Agilent 53147A. Why do they go for so little $? - Page 1
Forum section: electronics / testgear

author: Jwalling
author_rank: Unknown
timestamp: July 20, 2017, 06:53:40 pm
content: I'm curious about why these go for so cheap?A power meter, 20GHz counter, and DMM. Seems to be a lot of bang for the buck...http://www.ebay.com/itm/AGILENT-53147A-MICROWAVE-FREQ-COUNTER-POWER-METER-DVM-10HZ-20GHZ-Opts-NICE-/282580077493?epid=1604123387&hash=item41cb15cbb5:g:hBcAAOSwzQhZcPaHEven has the oven and battery options.There any many others in this price range.Why buy a 53132A/31A for a bit less?

author: edavid
author_rank: Super Contributor
timestamp: July 20, 2017, 07:29:54 pm
content: The 53131A and 53132A are much better counters for non-microwave measurements. They offer 10 or 12 digits/second of resolution, independent of input frequency.CW microwave counters don't have that many applications.

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 20, 2017, 07:32:50 pm
content: Counter only to 1Hz resolutionDVM only 50V DCYou need a sensor (not included) for the power measurement

author: TheSteve
author_rank: Unknown
timestamp: July 20, 2017, 08:03:45 pm
content: I paid 1/3 the price for mine compared to the one in the auction you linked to. The previous replies have pretty much summed up why they don't replace a 5313x counter. At the price I paid I think they are insanely good value for money. A power meter and a 20 GHz frequency counter. You just have to understand the limitations.

author: alm
author_rank: Super Contributor
timestamp: July 21, 2017, 09:38:56 am
content: If you plan to use the power meter, expect to pay a few hundred USD for a power sensor in guaranteed working condition. Any power sensor sold as 'untested' is likely blown and unrepairable.
[Keysight 1000x] Disable cursor during measurement - Page 1
Forum section: electronics / testgear

author: jusaca
author_rank: Unknown
timestamp: July 05, 2017, 08:50:02 am
content: Is there any way to disable the cursors, when you have some active measurement? The manual says that cursors are activated during measurement to show the part of the signal which is used for the measurement. This can be helpful, but most times I think they are more annyoingIt must be possible to hide them?Hope somebody knows the answerjusaca

author: jusaca
author_rank: Unknown
timestamp: July 18, 2017, 01:08:19 pm
content: Just if someone else is interessted:Keysight support told me, that there is no way to disable cursors with activ measurements ;(Maybe with a new firmware?
TMK Ultra tester 160 age? - Page 1
Forum section: electronics / testgear

author: walshy007
author_rank: Newbie
timestamp: July 20, 2017, 11:00:42 am
content: I have come into possession of a multimeter calling itself TMK ultra tester 160.. a quick googling showed that I cannot find this model listed anywhere. It does seem to be a clone (or maybe it was the original?) of the taylor 85a.The case is made of wood, and painted a kind of army green. the connection panel appears to have been replaced but the rest of it looks original.I'm wondering if anyone knows what year these were manufactured, or any history behind them? Even looking up the company TMK yields little information.Picture attached.
Rigol DG1022Z bug - internal noise source won't freq mod square wave. - Page 1
Forum section: electronics / testgear

author: Circlotron
author_rank: Super Contributor
timestamp: July 20, 2017, 06:44:16 am
content: I want to frequency modulate a 100Hz square wave with a random noise source to simulate a chopper disk sensor driven from a piece of machinery subject to vibration and mechanical backlash etc to see how well some firmware deals with this. Set up the DG1022Z and it will allow the 100Hz to be modulated by every other internally generated waveshape except the random noise one. It can be selected but does not actually work. The instruction manual says it can be done. In particular, when the output is set to 100Hz square wave and the FM deviation is stepped up and down between 30Hz and 50Hz in 1Hz increments the 100Hz square wave can clearly heard jumping to different steady frequencies typically 0.5Hz variation. The actual frequency is inconsistent even if the FM deviation is the same on several different occasions.Can anyone else reproduce this? The firmware is 00.01.12

author: Circlotron
author_rank: Super Contributor
timestamp: July 20, 2017, 06:55:11 am
content: Tried channel 2 as an external modulation source and every waveform works except arbitrary noise. The book says it can be done though...

author: CustomEngineerer
author_rank: Frequent Contributor
timestamp: July 21, 2017, 04:57:11 am
content: I'm probably misunderstanding what you are trying to accomplish, but what are you expecting the waveform to look like when you say its not working? I'm pretty sure when you are using noise as the modulating waveform, its modulating at the full max frequency of the generator (notice that the fm frequency setting is not available if the shape is set to noise) and so I would expect the waveform to not really be doing anything other than maybe have a little jitter if you look at the next couple of edges after the trigger.Edit: I don't have a DG1022Z generator, however this is the behavior I get if I use the built-in generator in my DS2072A-S, and also same with my Siglent SDG-2042X.

author: Circlotron
author_rank: Super Contributor
timestamp: July 21, 2017, 05:08:53 am
content: Quote from: CustomEngineerer on July 21, 2017, 04:57:11 amThat's what I am hoping for - a jittery 100Hz square wave. It sounds quite clean though even with the deviation set to max.
How to measure energy used over 48 hours with Power Meter? - Page 1
Forum section: electronics / testgear

author: ocset
author_rank: Super Contributor
timestamp: July 19, 2017, 04:47:47 pm
content: Hello,We need to monitor the power consumption of a <50W mains connected product over 48 hours using our Hameg 8115-2 Power Meter. We wish to know the total energy consumed over 48 hours. Page 38 of the User Manual (below) says that there is software for doing this, but we cannot find how to download it. Do you know where we can get this software?We tried Rohde & Schwarz website but they don’t have it.Hameg 8115-2 User Manual:https://cdn.rohde-schwarz.com/pws/dl_downloads/dl_common_library/dl_manuals/gb_1/h/hm8115_1/HM8115-2_Power_Meter_UserManual_de_en_03.pdf

author: hugatry
author_rank: Contributor
timestamp: July 19, 2017, 05:38:55 pm
content: In theproduct pagethere is "Software" link in the "Download" section, which is on the right side of the page.Hereis a direct link to the software.
Tektronix TDS5104B - Page 1
Forum section: electronics / testgear

author: colonviejo
author_rank: Newbie
timestamp: July 09, 2016, 11:38:49 pm
content: I need the spare input channel of a Digital Phosphor Oscilloscope Tektronix TDS5104B regards

author: Phillip111
author_rank: Newbie
timestamp: July 20, 2017, 01:15:19 pm
content: HI, Did you ever manage to find the input module for the TDS 5104?My 50 ohm input resistor has overheated. I would like to replace it. Do you perhaps have any schematics or picture to show how it can be done. It could be a bit tricky as it should handle the TDS 5104 1 GHz signals.
Quality of the UNI-T UT60B - Page 1
Forum section: electronics / testgear

author: Lord Nicoll
author_rank: Contributor
timestamp: July 17, 2017, 07:54:29 am
content: I knew buying this meter about UNI-Ts infamous image, and thought it might be worth gambling on this meter, and for the last year or so it's been a pretty OK meter for me, I mostly use DC low (12 or under) so it was a really nice meter for that. However recently I've started doing more higher voltage DC work, and I've kinda started to wonder about maybe getting a better meter. The work I'm doing is on a 400v 56,400?F capacitor bank, and while I keep a pretty safe distance to it, I also do the same to my meter, I don't want it blow up beside me, but that had me thinking, should I go out and prostitute myself (that's a joke guys) to be able to afford a fluke or continue to keep my distance, I don't think it's a terrible meter, but what do you guys think, There seems to be so many models of UNI-T you'd almost think it was to confuse people lol.

author: MosherIV
author_rank: Super Contributor
timestamp: July 17, 2017, 07:23:48 pm
content: It does not look like anyone has done a tear down of UT60BFound a tear down of the UT60Ahttps://oliversmith.io/technology/2009/12/27/inside-the-uni-t-ut60a-multimeter/It does not look like this series has MOVs fitted to protect against HVUnitrend have got some if their dmms certified, so in theory the construction of their dmms should contain any catestrophic failures.If you can get a safer meter, do so, eg UT139 or Amprobe AM510 are relatively cheap.Of course there is the much revered EEV blog Dmm the BM235 but it is more expensive than the others I mentioned.Btw, it is a good idea to have more than 1 dmm

author: Lord Nicoll
author_rank: Contributor
timestamp: July 17, 2017, 11:35:12 pm
content: Quote from: MosherIV on July 17, 2017, 07:23:48 pmThe UT60B I have has two MOV like devices (they aren't marked, so I'm not 100% sure but they seem to be) as well as an in line device, probably a form of variable resistor, it also looks a lot nicer made on the inside, with more components really. My other multi meter is a shitty Lidl one that I use for applications I expect it to blow up, I posted a review of it a few years ago here, I'll see if I can find it, here is a picture of the UT60B, I took the fuses out after they blew and never replaced them. They are very similar but this B model looks a lot nicer, it also have with nice large HRC fuses, not crappy glass ones.Here are the photos, both JPG and CR2 raw.https://drive.google.com/open?id=0B5g2zvlBjjyYZGtoYUNXeHpSWGc

author: MosherIV
author_rank: Super Contributor
timestamp: July 18, 2017, 08:31:35 am
content: Yes, it looks like the input has MOV protection.At the end of the day, if you do not trust the meter, get one that is guaranteed to be safe (by independant test lab verification).You have been sensible enough to ask, so why not make sure you are safe and get a dmm that is certified.I do not know of the UT139 is certified.I think all Amprobe's are certified.(I am not affiliated in any way to either, just passing on what I know)
DSA 602 screen dump? - Page 1
Forum section: electronics / testgear

author: cncjerry
author_rank: Unknown
timestamp: July 15, 2017, 11:03:52 pm
content: Is there an easy way to get a screen dump from a 602 (without diskette)? I've been staring at the GPIB programming manual without luck. I've seen references to docuwave and wavestarI picked up a 602 the other day for cheap and it is quite the beast. Tons of functions for older technology.

author: alm
author_rank: Super Contributor
timestamp: July 16, 2017, 01:07:12 am
content: There are two links at the bottom of this page that look like they should work:http://w140.com/tekwiki/wiki/DSA600Wavestar might require an old Windows version, possibly a virtual machine or DOSbox could work. Tekdump should be easy to get working on any Linux/Unix version (including OS X?). Possibly on Windows with something like Cygwin.Looking at theprogrammer manual, it looks like BITMap command can send a bitmap through RS-232, GPIB and Centronics. The HPGl command can send HPGL-compatible plotter commands that you could interpret using plotting emulation software likeKE5FX's 7470.exe(only for Windows). If you are so inclined, you should be able to retrieve a screen dump in only a few lines of code. For GPIB you should be using proper binary transfers. I seem to recall (on a later Tek scope) binary transfers via RS-232 to be somewhat weird and just implementing some sort of 'read until no data for X seconds' wait loop.Depending on what you want to do, acquiring the actual points may be more useful, but you would obviously need to plot them yourself.

author: Johnny10
author_rank: Frequent Contributor
timestamp: July 16, 2017, 02:27:33 am
content: NI has a GPIB driver for DSA 601 and DSA 602 listed on their site.http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=E3B19B3E9444659CE034080020E74861

author: cncjerry
author_rank: Unknown
timestamp: July 16, 2017, 03:37:25 am
content: I haven't tried the NI driver but the others I couldn't get installed or operational. I could always extract the curves but wanted the actual screen bitmap.

author: alm
author_rank: Super Contributor
timestamp: July 16, 2017, 03:48:17 am
content: Fine, suit yourself.

author: 1audio
author_rank: Frequent Contributor
timestamp: July 18, 2017, 04:59:57 am
content: I have been using this:http://www.metratek.com/index.htmfor years. It supports most Tek scopes including some of the obscure ones. Not cheap but I have used with my 7854 + 7L5 to capture spectra and well as with the 7S12 TDR and my THS720.
Where to Buy Quality Replacement Rigol DS4024 Rotary Encoder with Switch - Page 1
Forum section: electronics / testgear

author: Paul Price
author_rank: Super Contributor
timestamp: July 17, 2017, 01:06:08 pm
content: Does anyone know where to get a best quality replacement rotary encoder with switch. The DS4024 Oscilloscope Horiz Time/Div encoder is in need of replacement.

author: CustomEngineerer
author_rank: Frequent Contributor
timestamp: July 18, 2017, 12:28:24 am
content: https://www.eevblog.com/forum/testgear/rigol-ds1054z-rotary-encoder-mod/Even though title mentions DS1054Z, seem to remember at least one or two people discussing the mod that had DS4000 scopes.Edit: Sorry, now that I think about it those were mostly about changing the general purpose encoder to ones with detents, so may not have what you are looking for. On a side note, the horizontal scale on my 2.5 year old DS2072A recently started going bad. It seemed like I probably could have fixed it by cleaning the encoder, but since it was still within 3 year warranty I sent it back to Rigol and made them replace it.

author: rsjsouza
author_rank: Super Contributor
timestamp: July 18, 2017, 01:07:43 am
content: I was one person that replaced one encoder on my DS4014 and the model I used is in the thread below:https://www.eevblog.com/forum/testgear/rigol-mso4000-and-ds4000-tests-bugs-firmware-questions-etc/msg951428/#msg951428
Flir DM93 / CM85 - Page 1
Forum section: electronics / testgear

author: zetsubou
author_rank: Contributor
timestamp: July 17, 2017, 10:06:57 am
content: Hello everyone, if you've had experience with the latest FLIR meters I'd love to hear your thoughts. There doesn't seem to be much mention of them online and the only youtube review is from 2013.
Rigol Electronic Load Software - Page 1
Forum section: electronics / testgear

author: Pack34
author_rank: Frequent Contributor
timestamp: July 17, 2017, 12:51:54 pm
content: I'm going to be doing some power supply testing to quantify the supply over 120 and 240V.I see that the Rigol DL3021 has RS232 and USB connections. Is there some software for it that I'm missing? Is there a simple serial protocol that I can use to handle the necessary logging in a Terminal program or Python script?I'd like to do a barrage of sawtooth, square, and endurance tests on both US and EU mains levels. Just setting the load and watching it isn't enough, I need the data to be able to generate plots in either MATLAB or Excel for documentation and design records.
Anyone Know About the Power Probe PPDMM Multimeter? - Page 1
Forum section: electronics / testgear

author: Locator
author_rank: Contributor
timestamp: July 16, 2017, 12:27:53 am
content: I saw one short favorable reference to this multimeter on this forum, but can't find any other info. It's marketed toward automotive, but wonder how useful it would be for electronics? Does anyone happen to know the OEM? Has anyone here seen one or used one? Is it a good meter?Here's what it looks like:https://www.amazon.com/gp/product/B00NPY02KG/ref=ox_sc_sfl_title_84?ie=UTF8&psc=1&smid=ATVPDKIKX0DERThanks.

author: retiredcaps
author_rank: Super Contributor
timestamp: July 16, 2017, 01:30:42 am
content: Quote from: Locator on July 16, 2017, 12:27:53 amI don't have time to research now, but it sure looks like Mastech like to me. Search their site.

author: nidlaX
author_rank: Frequent Contributor
timestamp: July 16, 2017, 01:35:50 am
content: Somebody is really excited about their off-brand, generically spec'd multimeter.
Tektronix 495 + HP 8444 - Page 1
Forum section: electronics / testgear

author: peo007
author_rank: Contributor
timestamp: July 14, 2017, 01:53:58 pm
content: HelloIs it possible to connect a tracking generator (HP 8444A) witha spectrumanalyzer (Tektronix 495P)or is it completely different LO frequencies?

author: MadTux
author_rank: Frequent Contributor
timestamp: July 14, 2017, 04:10:44 pm
content: HP 8568A/B has 1th LO between 2050-3550MHz, Tek 495P 1th LO is 2072-6400MHz.Normal HP 8444A has a cavity oscillator at 1550MHz and mixes that with 3th LO (500MHz) from SA to get 2050MHz for mixing with 2050-3550MHz LO from SA => 0-1500MHz at tracking output.As far as I understand, it might work, if you take normal 8444A and feed 522MHz (from signal generator) into 3th LO input. HP 8444A opt 59 has an internal 500MHz oscillator for use with more modern SAs. So you might get some inspiration for building a 522MHz oscillator from OPT59 manual. Other option might be to tweak/build own 1550+22MHz cavity oscillator

author: peo007
author_rank: Contributor
timestamp: July 15, 2017, 05:09:41 am
content: Thanks for the infoI have option 59 on my 8444A, maybe it is possible to adjust up to 522MHzI have the opportunity to buy a Tek 495P for a cheap sum.
DSA815-TG Internal battery - Page 1
Forum section: electronics / testgear

author: Pirapoense
author_rank: Newbie
timestamp: July 14, 2017, 03:43:18 pm
content: I have a Rigol DAS815-Tg which presents an interesting anomaly in the date and time displayed on the screen.It is normal that we have to set the date and time when turn on the equipment for the first time like when I bought the equipment one and half year ago; however, when the power is turned on for a new use, the date and time remains in the status of the moment that the power was turned off.Obviously I thought that this anomaly was caused by the discharged internal battery but the problem persists even with a new battery.Any suggestions on this issue will be very welcome.

author: mcinque
author_rank: Unknown
timestamp: July 14, 2017, 06:49:48 pm
content: maybe RTC dead on arrival?

author: Pirapoense
author_rank: Newbie
timestamp: July 14, 2017, 07:54:41 pm
content: It could be but the clock runs while the equipment is turned on.

author: mcinque
author_rank: Unknown
timestamp: July 14, 2017, 08:01:22 pm
content: Yes, I think it's more the RTC clock powered by the internal battery that is somewhat defective and won't run with battery power. Can you measure the current drain for the battery (too see if it's powering effectively something or if it's floating or if it's shorted and drained quickly)? I'm just guessing
Fluke 28II battery issues / other issues? - Page 1
Forum section: electronics / testgear

author: cdntech
author_rank: Contributor
timestamp: July 07, 2017, 10:29:23 pm
content: Hello! I am thinking of upgrading my meter.I am going to go with the Fluke 28II over the 87V since I am an electrician and will be using the meter in the field quite a bit. I have been doing some reading on the low Battery fault while using the continuity beeper with the backlight on, the posts regarding this issue seem to be a few years old now and I cannot find anything recent on the issue.One of the guys at work has a 28II that is 2 years old and he just recently had this problem happen to him. I phoned Fluke tech support and they have no information on the problem. So, before i drop $600.00 on the 28II I was just wondering if anyone knows if Fluke has fixed this issue yet??Many thanks!

author: retiredcaps
author_rank: Super Contributor
timestamp: July 09, 2017, 01:18:20 am
content: This is item is fixed now. If your friend has the problem, he should contact Fluke for a replacement.If Fluke technical support is clueless, point them to the threads here on eevblog.https://www.eevblog.com/forum/testgear/fluke-28-ii-battery-life/

author: cdntech
author_rank: Contributor
timestamp: July 16, 2017, 06:03:37 pm
content: Just an update on the Fluke 28II...I went to pick up the Fluke 28 I ordered the other day, I got it home and had a look at it and much to my dismay the silk screen characters on the face of the meter near the input jacks could be rubbed off with a thumbnail! Some of the other characters weren't printed onto the meter very well either.Also, it seems that Fluke is still having a problem with the battery compartment bulge as this meter had that issue. The manufacture date on the box was June 2017.I ended up returning the meter and going with the venerable 87V which they had in stock at the supplier. After some use of my new 87 this weekend I noticed that there is a piece of black plastic embedded in the acrylic LCD viewing window (it is not on the inside) which cannot be cleaned up. Sort of annoying on a brand new meter.I have since sent Fluke an email with all of this info, we will see what they say. It's really too bad, I was excited to get my hands on the 28II.My other two Flukes (a 12B and a 26III) are pushing 20 years old now and the lettering is as good as new, you would think on a meter marketed for "hard use" Fluke would use better methods!