hybridfree/eevblog-posts huggingface dataset:
Comparison -  Bob Parkers Digital Versus Creatronica Analog Capacitor ESR Meter - Page 1
Forum section: electronics / testgear

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: October 28, 2012, 05:11:15 pm
content: Guys ,Well This is a Video Shoot Explaining The Difference Between a Digital ESR Meter From Mr Bob Parker " Australia " And a Analog ESR Meter From " Creatronica " .In Short This Removes The Myths Associated To Analog ESR Meters Created By Some Forum And Their Members .I am Not Saying That Analog Meters Are Better Or The Digital Once ,What i am Trying To Say Is That Both Have Their Advantages And Disadvantages .Lots of People Would Agree To Me On This After Going Through This Video .PS : I hope The Video Quality is Better Then My Older Video Shoot ...

author: SeanB
author_rank: Super Contributor
timestamp: October 28, 2012, 05:27:10 pm
content: Much better video, nicely done.Stop being so defensive, both are good meters, not network analysers, but both work at the job well enough to tell bad, from marginal, from pretty good. At least it enables you to tell the not bulging and popped dud from the not bulging and still working one. If the case is looking like it is a balloon, or the sleeve is split or shrunk down on the side you can tell it is dying or past dead, only waiting to go bang.

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: October 28, 2012, 05:36:42 pm
content: Quote from: SeanB on October 28, 2012, 05:27:10 pmWell,i am not defensive ,As the video is more about the analog meter i just shared my excitement .You already know i sell blue ESR meter also .PS : i am not able to make my video appear in the thread ,Can simon or some other mod help me and get that please .

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: October 28, 2012, 05:42:55 pm
content: @ All ,The Circuit Inside is based on the PIC 16F883 MCU .Does anyone know a Analog ESR Meter project in the open for the pic micro controllers ,How about some spanish knowing friends here online on EEVblog .I for sure know some forums have this kinda project discussed in intense details .Just googling "capacheck" or "capamiter" or "capameter" gets some awesome pictures out there ,but i am still searching .

author: robrenz
author_rank: Super Contributor
timestamp: October 28, 2012, 07:45:41 pm
content: Much better video quality. You should do the test on several capacitors over the range of both meters. That may show some differences on how each meter actualy measures the ESR that a pure resistance will not show.

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: October 29, 2012, 01:32:40 am
content: Quote from: robrenz on October 28, 2012, 07:45:41 pmI have ,sometimes both behave different hence as i advised everyone needs to have both types or atleast 2 of one type with different manufacturer
Rigol 2000 series with logic analyser ! (DS2000D) - Page 1
Forum section: electronics / testgear

author: playfsx
author_rank: Contributor
timestamp: July 24, 2012, 11:00:09 pm
content: I playing with my rigol ds2072 and look what i found :probably the company it's going to lunches a new series as you can see with a logic analyser !

author: EEVblog
author_rank: Unknown
timestamp: July 25, 2012, 12:22:21 am
content: Makes sense.Haven't got my 2000 yet, how is it?A review for us?The Rigol ARB and SpecAnalyser are on the Fedex truck...Dave.

author: tlu
author_rank: Regular Contributor
timestamp: October 26, 2012, 11:56:40 pm
content: I've searched all over the net and did not find the Rigol DS2000 series with built-in LA. This is probably a misprint?tlu

author: tom66
author_rank: Super Contributor
timestamp: October 27, 2012, 12:19:45 am
content: Or, they have not yet decided to go to the market with it.There doesn't appear to be any way to input digital signals into the unit anyway, not even a depopulated port, so it would probably be a different board revision altogether.

author: tlu
author_rank: Regular Contributor
timestamp: October 27, 2012, 05:54:09 am
content: Well, it apparently doesn't have the means to accept digital signals as you pointed out. Hopefully, there maybe someone here smart enough to hack it to the bigger BW and memory and all the other options as they are fully built in and only need to be software activated. With lots of followings this may just be the case like the Rigol 1052E but maybe Rigol had learn from that. Or maybe they are pulling the same scheme to sell more of these since Rigol knew about the hack for the 1052E and just did nothing about it for a very long time. Who knows, with others getting on board on with this dso it may be once again hackable with this new line of the 2000 series. Rigol may again be "caught with their pants down again" as Dave would like to say it.
signal hound  usb sa44b - Page 1
Forum section: electronics / testgear

author: ted
author_rank: Newbie
timestamp: October 25, 2012, 08:23:38 pm
content: Any hints and tricks to start using usb sa44b primarily for measuring accuratelycarrier levels in the interior of buildings the levels on 850 mhz band and 1900 Mhzband. Looking for measuring in circles,like vectors every 4 ft. or so to be able toplot the two patterns which will be the data base for some other calculations andstudies...ANY HELP....Please...TJ
Fluke 28 test leads - Page 1
Forum section: electronics / testgear

author: zaoka
author_rank: Frequent Contributor
timestamp: September 29, 2012, 09:43:08 pm
content: Does anybody own Fluke 28?Test leads does not go all the way in??Also when in ohm range it reads resistance of diodes.. this is confusing for in-circuit troubleshooting... If I remember right Fluke 12 and 77 did not do that?And third thing I noticed when measuring higher capacitors for example 3300uF results are around 10% higher compared to Agilent U1272A, BK Precision 875B and Hioki 3801-50.Other than that and diode range (only up to 2V) I love it.

author: retiredcaps
author_rank: Super Contributor
timestamp: September 30, 2012, 01:58:25 am
content: Quote from: zaoka on September 29, 2012, 09:43:08 pmI have a Fluke 27 II and with standard TL75 test leads, they stick out 3 to 4 mm.I should be getting another different set of Fluke test leads sometime next week so I will try the other ones.

author: JuiceKing
author_rank: Regular Contributor
timestamp: September 30, 2012, 03:37:05 am
content: Quote from: zaoka on September 29, 2012, 09:43:08 pmAre you talking about the 28 or 28ii? The test leads that came with my 28ii go in all the way.I've found that the 28ii and 85V consistently report capacitance in the 50-100uF range about 10% higher than what I see on several different bridges (testing at 1000Hz).

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: September 30, 2012, 02:15:06 pm
content: Quote from: zaoka on September 29, 2012, 09:43:08 pmSir ,i was myself searching for a protek 608 new lead .I saw a dealer in ebay usa selling awesome collection of UNI-T leads .I have used the same brand leads in a few multimeters over the years and they are awesome .Might be you can try one of those instead of tad expensive fluke once
MSOX3054A First use and impressions. - Page 1
Forum section: electronics / testgear

author: djsb
author_rank: Super Contributor
timestamp: September 29, 2012, 09:29:51 am
content: Here I will post my first use experiences and impressions of my new MSOX3054A.1/ Attaching a probe (unadjusted) to channel 1 and measuring the probe comp 1 output.Snapshot output figures (Amplitude only-Frequency=1.0012KHz)Pk-Pk 2.65vMax 2.54vMin -120 mVAmpl 2.51vTop 2.49vBase -30mvOver 2.0%Pre 2.0%Avg-Cyc 1.2167vAvg-FS 1.2167vDC-RMS Cyc 1.75vDC-RMS Fs 1.75vAC-RMS Cyc 1.2564vAC-RMS Fs 1.2561vMeasurements on probe comp 1 pin with a GM Metrahit XTRADC voltage 1.215vAC voltage (1M Ohm setting) 1.225vMeasurements with built in DVMAC RMS 1.26vDC 1.22vDC RMS 1.75vWhat strikes me is the difference in RMS measurement values between the inbuilt DVM, my multimeter and the scope measurements. The scope measurements are done with an uncompensated scope and there is some pre/over shoot present on the waveform.More observations later.David.

author: Unknown
author_rank: Unknown
timestamp: September 29, 2012, 01:17:27 pm
content: The built-in DMM appears to be consistent with the scope measurements. The GM DMM most likely does not have enough bandwidth for a 1 kHz square wave with relatively fast edges.
Osciloscope Owon HDS 1022M-N  - Page 1
Forum section: electronics / testgear

author: costas
author_rank: Contributor
timestamp: September 27, 2012, 04:58:13 am
content: Hello,A two years agou I buy from Owon two osciloscope (PDS6062(T)+HDS1022M-N ) I am very happy with them , unfortunately with HDS1022M-N I had an accident, I dropped down , now no output on screen and the screen is't illuminated, I did not see anything broken or cracked in it , I change the display with another new but the same problem ... the backlight not working , ater power I hear a "buz" but not relay "dita" , I compare this nois with working device , is just a buzer from mesurment block ,on the mine board I find just 3,3v power suply , other power suply does not work ...The Owon enginiers told mabe is a firmware problem !!! the firmware are stored in 39LV3201 flash , mabe somebody have read a good firmware for this HDS1022M-N . or can tell me the pin configuration from J-tag connector from the main board , I want to try to read flash 39LV3201 under ARM prcocesor.....Somebody try this ?Thank you ,Costas

author: Dread
author_rank: Regular Contributor
timestamp: September 27, 2012, 09:22:53 am
content: I am not sure I understand. Are you saying part of the power supply is dead after the unit fell and you think it's a firmware issue? Seems to me like Owon did not understand the problem and gave you bad info. I would trouble shoot the dead power rail and see why it's not working. There may be a hair line crack on a trace or some other part has been damaged or broke a solder connection.

author: glicos
author_rank: Regular Contributor
timestamp: September 27, 2012, 10:13:08 am
content: i agree with dread. firmware inside flash ic can't just be erase by dropping the unit. look for microcrack on board or loosed parts inside

author: costas
author_rank: Contributor
timestamp: September 27, 2012, 11:51:16 am
content: Hello ,I looked very good motherboard but I found nothing detached or broken,... I got only 3,3v power on the main board , Other power supply is controlled by procedure so when CPU procedure working wrong, then there is only 3.3v on mainborad (because other power supply is closed). So if I only measure 3.3 V then it should be because the SW procedure in mainboard doens't work, so mainboard got problem or SW.Thank you .Costas

author: Dread
author_rank: Regular Contributor
timestamp: September 27, 2012, 02:52:57 pm
content: This is just me but if that's the case I would find a point in the dead powerline and desolder the last coupling component and inject in my own power (limiting the current) and see if it boots up.I still have a hard time believing the chips firmware got corrrupted after a fall!IMHO it's got to be physical damage issue somewhere, maybe something near that CPU.Anyway it's your choice on how to proceed.
Agilent U3402A Opinons? Anyone using it? - Page 1
Forum section: electronics / testgear

author: Soertier
author_rank: Contributor
timestamp: November 03, 2012, 09:19:46 am
content: Anyone using Agilent U3402A bench multimeter?I've seen some non-encouraging comments about the smaller brother, U3401A, here:Reply #2https://www.eevblog.com/forum/product-reviews-photos-and-discussion/agilent-u3401a-multimeter-teardown-(photos)Reply #2https://www.eevblog.com/forum/product-reviews-photos-and-discussion/u3401a-buy-or-not/msg46577/#msg46577The diode test / continuity appears different in spec, that would at least make me think the U3402A would not behave identical to the U3401A, but who knows.The datasheet seems to be having an issue, Under the DC Voltage specifications you don't see the name of the U3402A only the name of the U3401A, but of course the specs are there, it's only the name missing.http://cp.literature.agilent.com/litweb/pdf/5990-3970EN.pdf

author: zaoka
author_rank: Frequent Contributor
timestamp: November 03, 2012, 05:04:26 pm
content: I have U3401A. Agilent support confirmed that problem with diode test and told me that U3402A has the same problem. Its firmware issue and does not effect accuracy.It is very very nice meter, high quality and I just love it! U3402A has faster reading modes and its worth spending a bit more money to get it.I think I can get you a brand new meter for $350 + shipping if interested...

author: Soertier
author_rank: Contributor
timestamp: November 05, 2012, 09:55:16 am
content: Quote from: zaoka on November 03, 2012, 05:04:26 pmThe U3402A was lanched in June 2009. Since then they are still with this firmware issue? Not very encouraging.Quote from: zaoka on November 03, 2012, 05:04:26 pmU3402A or U3401A?

author: zaoka
author_rank: Frequent Contributor
timestamp: November 06, 2012, 09:46:42 pm
content: U3401AThey had that problem since they are produced, however, Agilent was not aware of that. I reported this problem a month ago and they confirmed and told me its firmware bug.Not sure when they will release upgrade.

author: Soertier
author_rank: Contributor
timestamp: November 07, 2012, 10:10:48 am
content: Quote from: zaoka on November 06, 2012, 09:46:42 pmThanks, but I am interested in the U3402A.I thought Agilent are more Agile in programing such meters or more Agile finding this firmware bug faster than (over) 3 years since the release of the meter.
Farnell Tops 3D PSU - help - Page 1
Forum section: electronics / testgear

author: IanJ
author_rank: Unknown
timestamp: February 29, 2012, 11:05:10 pm
content: Hi all,I have a Farnell Tops 3D Bench PSU amd am looking for a service manual and/or schematic as it's in need of a wee bit of calibration.Anyone help?Ian.UK.

author: IanJ
author_rank: Unknown
timestamp: March 01, 2012, 12:15:38 pm
content: Update:Managed to pick up a schematic via the web........and thankfully it's detailed enough that re-calibration is a doddle.Ian.

author: radioman2012
author_rank: Newbie
timestamp: August 25, 2012, 03:22:40 pm
content: HiI to have a Farnell Tops 3D Bench PSU and am looking for a service manual or schematic asit also is in need of calibration.I see that you managed to find a schematic via the web, i have been looking but no luck.Would you be able to help me with a copy ?ThanksHoward
Atten APS3005S Teardown and Upgrade - Page 1
Forum section: electronics / testgear

author: SGInut
author_rank: Contributor
timestamp: March 29, 2012, 01:44:30 pm
content: Hey folks,Figured I'd try my hand at doing a teardown and upgrade video. I picked up an Atten APS3005S power supply as I needed an inexpensive 5a variable bench supply and figured for $80US it was worth a chance. It performs well but the junky always-on fan was really annoying so I decided to swap that out as well as put in the thermal switch that was missing from my version of the supply.

author: saturation
author_rank: Super Contributor
timestamp: March 29, 2012, 02:45:49 pm
content: Nice! Thanks for making it available.

author: jeremy
author_rank: Super Contributor
timestamp: September 11, 2012, 12:35:23 pm
content: Sorry to bump an old thread, but I just wanted to chime in and say that I just got one this unit works a treat. Especially important, there is no overshoot/undershoot when switching it on/off; the old GW/Instek ones I am used to are notorious for this.

author: saturation
author_rank: Super Contributor
timestamp: September 11, 2012, 01:13:01 pm
content: Great to hear. Did you do the test under its rated load? That would be best.

author: jeremy
author_rank: Super Contributor
timestamp: September 27, 2012, 12:02:01 pm
content: Unfortunately I don't have anything handy to test it, but I have run each channel at 12V/3A with no problems at all.
Fluke 45 and Eminent (PL-2303) USB to Serial converter - Page 1
Forum section: electronics / testgear

author: mrdubje
author_rank: Newbie
timestamp: June 21, 2012, 06:01:21 pm
content: Hey guys,After several tries, I cannot connect with my fluke 45 using RS232.As I don't own a nullmodem cable I use a converter from eminent.http://www.eminent-online.com/en/product/29/em1116-usb-to-serial-converter---basic-version-.htmlAs i also don't own the software disk from fluke itself, I wanted to ask the question if it is possible at all to use FVF-SC2 (torrent download) with a fluke 45?Also the free fluke 45 serial application (from the internet) I cannot get to work.I have set up the meter as fluke suggests with Baud to 9600, parity NO, echo OFF, and print to 0.I tried on two computers running XP and Win7.Can anybody help me?

author: M. András
author_rank: Super Contributor
timestamp: June 21, 2012, 06:21:25 pm
content: the software has no protection at all. so i dont think it would be different. cheaper test solution then buy it and it wont work

author: Unknown
author_rank: Unknown
timestamp: June 21, 2012, 06:26:43 pm
content: A null modem cable reverses the TX and RX connections. If the device expect a null modem cable, then this might be your problem.Try using a serial console program likePuTTYto communicate directly with it. Assuming it's SCPI compatible, *IDN? should return the model number and serial. Also check the settings on the DMM, you can probably switch between RS-232 and GPIB (if available) and set baud rate and other serial parameters.

author: mrdubje
author_rank: Newbie
timestamp: June 22, 2012, 05:35:32 pm
content: Thanks for the replies!Got it sorted today!It was indeed not a proper connection.Borrowed a null modem cable from work, and it worked perfectly.I tested directly on the computer serial port.The PL2303 might be tested another time with a null modem cable.Solved.
Agilent U1211A Crash Test! - Page 1
Forum section: electronics / testgear

author: PetrosA
author_rank: Frequent Contributor
timestamp: August 11, 2011, 01:41:55 am
content: We all have those days from time to time when we do something really, really stupid. Today was one of them for me. I had pulled up to my job and started unloading tools and my clamp meter when I got a phone call. I laid the clamp meter, in its case, on the hood of my truck while I wrote something down. Two phone calls and three trips later I started working.A few hours later I was on my way to lunch and to drop off some materials at another job. Driving down the road at a nice 70-80 km/h or so, I heard something like the crinkle of one of those plastic tubs that cookies (biscuits) come in and saw something fly up in my passenger side mirror and figured I had run over some trash on the road. I had completely forgotten that the clamp meter was on my hood, and I didn't figure it out for another four and a half hours (when I actually needed the meter and started looking for it...).4:30 in the afternoon, I start looking for my clamp. It took about 5 minutes of looking before I connected the dots and drove back with a sinking heart to where I had seen that trash fly up. Unbelievably, the meter was laying there on the side of the road in its case. I pulled it out and couldn't believe it was still in one piece and, what's more, still working fine.I suspect someone must have stopped and tossed it into the grass because I remember seeing it tumbling on the asphalt. I don't know whether or how many cars may have run over it but it's likely that it got run over after flying off the hood at 80 km/h. Either way, I was seriously impressed by how it withstood my stupidity.Thank you Agilent!

author: saturation
author_rank: Super Contributor
timestamp: August 11, 2011, 11:42:11 am
content: Does it look pretty battered, P? If so, some pictures would be nice. Shows you the difference between the good names and others, even if they look the same. Did the case for it help?

author: PetrosA
author_rank: Frequent Contributor
timestamp: August 11, 2011, 01:19:13 pm
content: I can't see any damage from the crash at all. It was in the soft case that it came with, and that looks pretty decent too. The only scuffs I see are on the carabiner hook that I have on the carrying strap for hanging in the truck. The case looks solid as ever and no tire marks which is why I can't say for sure whether it got run over. I'll post some photos later when I can.

author: PetrosA
author_rank: Frequent Contributor
timestamp: August 12, 2011, 01:28:14 am
content: Pics as promised:
Agilent U1602A handheld scope - Anybody using this one? - Page 1
Forum section: electronics / testgear

author: zaoka
author_rank: Frequent Contributor
timestamp: July 30, 2011, 02:50:34 am
content: It retails for $1300, I can get one for $400..Does anybody have one of these, any feedback?It will be used for on-site work to check filtering of DC voltages and for presence of signal... its got multimeter as well..??

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 30, 2011, 02:58:05 am
content: Picture ? Link ?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: July 30, 2011, 09:32:52 am
content: I looked at this a while ago - it's a bit big & heavy, and didn't have trigger holdoff. Comments from an Agilent rep suggested it was made by a third party an there was zero chance of any future firmware updates.At $1300 I'd say go for the Owon handheld, but at $400, absolutely go for it - if it's old you may need to replace the NimH battery pack but that shouldn't be a big deal.The multimeter is probably more trustworthy than the one in the Owon.Owon review here :https://www.eevblog.com/forum/index.php?topic=3844.0

author: Richard W.
author_rank: Regular Contributor
timestamp: July 30, 2011, 10:19:55 am
content: If 5mV/div are good enough, go and get itThe screenshots are looking good. The only thing i don't like is the splitted sampling rate in two-chanel mode.But it should be ok for power supplies and audio stuff.Another big advantage: No ground connection

author: Rufus
author_rank: Super Contributor
timestamp: July 30, 2011, 05:00:13 pm
content: Quote from: mikeselectricstuff on July 30, 2011, 09:32:52 amThere is a bit of a review/comparison herehttp://www.tmworld.com/article/317067-Handheld_oscilloscopes_offer_varied_features.phpwhich suggests that third party is PROTEK Test and Measurement.The Protek 800 series are obviously the same basic design.

author: grenert
author_rank: Frequent Contributor
timestamp: July 30, 2011, 05:55:10 pm
content: Quote from: Rufus on July 30, 2011, 05:00:13 pmThanks for that link, Rufus. I could tell that the Agilent clearly was not an in-house design, but I couldn't tell who did it (the manual is definitely not written by an English-fluent person, and the user interface is standard Asian-design poor). It isn't an exact visual match with any other scope. Although the Agilent is more powerful technology, I actually regret selling my Fluke Scopemeter after getting the Agilent. The Scopemeter works very intuitively, while the Agilent has a clunky menu-driven interface. It also gets close to too big for a "handheld" scope. At least it has dedicated voltage and time scale buttons.

author: img
author_rank: Regular Contributor
timestamp: August 02, 2011, 03:29:20 pm
content: For $400 - get it, don't let it slither away!

author: zaoka
author_rank: Frequent Contributor
timestamp: August 04, 2011, 02:52:27 am
content: I purchased one, its from eBay.Will see if it was worth or not...
Elektro-Automatik EA-3048B Power Supply Teardown - Page 1
Forum section: electronics / testgear

author: armandas
author_rank: Frequent Contributor
timestamp: July 07, 2011, 09:28:45 am
content: As the title says, this is a teardown of the EA-3048B power supply. There is not much info on the internet about these, so I thought I'd share some pictures and comments.This is a so-called "universal" power supply. It has two outputs: DC and AC. The DC is not regulated, so you either get rectified or smoothed (using a 4700uF cap) output.Not much else to say, I guess, so let's look at what's inside.Front view.Overview of the insides.The voltage is controlled using a variable transformer (variac).Display board.Binding posts.Made in China..There are somemore pictures in the album.These PSUs aresold by Farnell.

author: saturation
author_rank: Super Contributor
timestamp: July 07, 2011, 12:53:02 pm
content: Thanks, nice tear down and clear photos. What does one use variable VAC at these voltages for? The DC output appears to be just full wave bridge rectification with a smoothing capacitor?

author: armandas
author_rank: Frequent Contributor
timestamp: July 07, 2011, 02:30:24 pm
content: Quote from: saturation on July 07, 2011, 12:53:02 pmIn the description, it says that these supplies are good for school labs and such, so I assume this supply can be used to safely reduce mains voltage (instead of using a transformer).You are right about the DC output. The smoothing capacitor can be switched on and off.

author: Frangible
author_rank: Regular Contributor
timestamp: July 07, 2011, 10:49:09 pm
content: A nice old school unregulated DC power supply. Good for testing regulators and for electro-chemical experiments!

author: Ronnie
author_rank: Regular Contributor
timestamp: July 08, 2011, 04:00:52 am
content: Quote from: armandas on July 07, 2011, 09:28:45 amLooks like the build quality is very good.

author: armandas
author_rank: Frequent Contributor
timestamp: July 08, 2011, 08:17:19 am
content: Quote from: Ronnie on July 08, 2011, 04:00:52 amCan't argue about that.

author: saturation
author_rank: Super Contributor
timestamp: July 08, 2011, 11:29:50 am
content: Its clear China can do very good work if they put their mind to it; I think the brand is German, and they have some very high end PSUs. My guess is those engineers really enforce their QC!Quote from: armandas on July 08, 2011, 08:17:19 am
New agilent U1230 Series Handheld Digital Multimeter - Page 1
Forum section: electronics / testgear

author: shadowless
author_rank: Regular Contributor
timestamp: July 06, 2011, 11:08:59 pm
content: http://cp.literature.agilent.com/litweb/pdf/5990-7550EN.pdfHope to see the review+teardown soon.I wonder about the U1231A model that does not measure current....

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 07, 2011, 12:47:28 am
content: Its a good idea to start using the search function.https://www.eevblog.com/forum/index.php?topic=3842.0

author: shadowless
author_rank: Regular Contributor
timestamp: July 07, 2011, 05:02:34 pm
content: thanks.No offence intended...too bad that one end up talking about your unmarried life.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 07, 2011, 08:15:01 pm
content: Quote from: shadowless on July 07, 2011, 05:02:34 pmIn this forum we have the liberty to talk even for our mother in law.

author: shadowless
author_rank: Regular Contributor
timestamp: July 08, 2011, 12:29:42 am
content: it is like gossip in the open isn't it. Too bad the U1230 discussion die on that thread.Hope to hear a review of them soon.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 08, 2011, 01:41:38 am
content: Nothing had died.The U1230 series looks very promising, and the pricing is very good, near to 100 - 130$.They are not so expensive so to need to think that much if you will get one.About manufacturing quality they are not that far from this.https://www.eevblog.com/forum/index.php?topic=3501.0
UEI dm393 - Page 1
Forum section: electronics / testgear

author: walcen
author_rank: Contributor
timestamp: July 12, 2011, 02:28:01 am
content: Any one here own a UEi dm393 ? After looking at the shootout I think it'll serve me well and the 393 has true RMS and Temp.So if anyone has one, tell me what you think of it. And is there is an Aus supplier or best place to purchase?regardsWal

author: EEVblog
author_rank: Unknown
timestamp: July 12, 2011, 05:13:18 am
content: Should be identical to the 391 I reviewed. If so it's a very well made basic meter, I liked it.Don't know of any aus supplier for UEi.Tequipment have it in the US:http://www.tequipment.net/UEiDM393.htmlIt's on ebay:http://www.ebay.com.au/itm/UEI-DM393-True-RMS-Digital-Multimeter-/380133595759?pt=LH_DefaultDomain_0&hash=item5881ba5a6fDave.

author: walcen
author_rank: Contributor
timestamp: July 14, 2011, 01:52:14 am
content: Quote from: EEVblog on July 12, 2011, 05:13:18 amThanks Dave, I just got a quote from tequipment. $50 bucks shipping and $25 bucks bank transfer, a total of around $200-. I thing for that price I'd rather grab a free shipped Fluke from china LOL.

author: EEVblog
author_rank: Unknown
timestamp: July 14, 2011, 01:57:04 am
content: Quote from: walcen on July 14, 2011, 01:52:14 amWhat about the ebay one then?Dave.

author: walcen
author_rank: Contributor
timestamp: July 14, 2011, 12:13:14 pm
content: Well I was tempted by the one on E-bay but after reading through the seller's accumulated negative feed back I reckon I'll steer clear of that one LOL, But thanks any way Dave I'll keep a look out.regardsWal

author: EEVblog
author_rank: Unknown
timestamp: July 14, 2011, 01:06:59 pm
content: 99.4%?8 negative, 454 positive.What's wrong with that?Dave.

author: Sabertooth
author_rank: Newbie
timestamp: July 18, 2011, 06:16:39 pm
content: Quote from: EEVblog on July 12, 2011, 05:13:18 amCheck out these guys in Australia.http://mummetools.com/contact.htmlThey carry Klein Tools, and Klein Tools owns 50% of UEi. Maybe the Klein Tools meters cross over to the UEi meters.

author: EEVblog
author_rank: Unknown
timestamp: July 19, 2011, 04:11:01 am
content: Mumme (Mummy) toolsWTF?!Dave.

author: mechelec
author_rank: Contributor
timestamp: July 19, 2011, 10:03:29 am
content: You should check out the Amprobe 37XR-A here:http://www.ebay.com.au/itm/New-Amprobe-37XR-A-True-RMS-Digital-Multimeter-/200605459293?pt=LH_DefaultDomain_0&hash=item2eb504635dI bought one and it seems to be pretty good with 0.1% accuracy (no temperature though).With delivery it works out cheaper than the UEI too.

author: Sabertooth
author_rank: Newbie
timestamp: July 19, 2011, 01:36:43 pm
content: Quote from: EEVblog on July 19, 2011, 04:11:01 amThere must be some relationship, or partnership, between Mumme Tools in Australia and Klein Tools in the US. Mumme lists Klein Tools on their website, and Klein Tools has a Mumme catalog on their site.http://www.kleintools.com/content/mining-heavy-industry-catalog
U1272A firmware update problem and solution - Page 1
Forum section: electronics / testgear

author: PetrosA
author_rank: Frequent Contributor
timestamp: July 29, 2011, 02:42:04 pm
content: I finally had some time yesterday to update the firmware in my U1272 but there was a problem with the update software seeing the meter. The meter would beep and show remote connection during the port scan process, but the software returned a "no meter connected" type of error. After trying a lot of different things, I finally had luck after resetting the custom settings in the meter to default (with the meter hooked up to the PC and the update software running). I'm thinking that maybe setting the baud rate to max in the meter caused issues, but I don't know. Anyway, after a shitload of tries I was able to update my firmware

author: saturation
author_rank: Super Contributor
timestamp: July 29, 2011, 02:47:51 pm
content: Sorry to hear PetrosA, my upgrades were flawless but I use the default baud rates. You should report this to Agilent.The meter works very well with firmware 2.0; it has locked up on me 2x on temperature readings, but turning it off and on reset it easily and it did not read falsely before that; after 2+ hours of use with a thermocouple I switched it to VDC to measure something but the screen froze on the range.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 29, 2011, 03:49:00 pm
content: Quote from: PetrosA on July 29, 2011, 02:42:04 pmYea those over aged electricians they have issues with the high tech stuffLOL ( I love you)Now that you got trained you will have less trouble, loading the next version 2.++Release date still unknown.Due the load of suggestions that I did about new improvements,I suggested to become an firmware beta tester.I am waiting for their reply.

author: PetrosA
author_rank: Frequent Contributor
timestamp: July 31, 2011, 05:05:18 pm
content: After some further testing and contacting Agilent, I have confirmation that the U1272A must be set to 9600 baud rate for the update software to work. The 19200 rate will not work.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 31, 2011, 10:19:11 pm
content: Bios updates on motherboards or firmware updates on DMM, haves the same rules.Always you have to load the setup defaults before flashing.Agilent had made instructions ( document U1271-90031 ),its true that they do not clearing up this detail, and so probably they should make some corrections to it.

author: PetrosA
author_rank: Frequent Contributor
timestamp: August 01, 2011, 01:13:30 pm
content: Quote from: Kiriakos-GR on July 31, 2011, 10:19:11 pmI have never, in the last 12 years or so of having and/or building PCs, cameras, GPSs and phones, reset a bios or firmware to defaults to flash an update, nor have I ever heard of doing so. Backing up, yes. Resetting? No.The tech team has been informed, so I'm sure there will be a change in the instructions soon.
Opinions on Oscium's new iPhone/iPad MSO? - Page 1
Forum section: electronics / testgear

author: alexwhittemore
author_rank: Frequent Contributor
timestamp: April 10, 2011, 03:41:42 am
content: Looks like there's a new MSO attachment that you can get from Oscium that attaches to an iPhone or an iPad and gives you one analog and four digital channels.http://www.oscium.com/.It looks cool, and I've always thought it'd be awesome to have an oscilloscope or logic analyzer dongle for my phone, but at the same time, I don't know how I feel about $300 US for 5MHz analog bandwidth and 12MSPS, especially when I've been planning to get a Seeed StudioDSO Quadwhen it comes out and has some reviews available. $300 seems a little steep in the first place, but for the sake of handheld portable scopes, it kind of pales in comparison to 2 channels at at least 3-6x that bandwidth like the DSO quad has (ACTUALLY, the quad lists 72mhz analog bandwidth, 72MSPS, so either that's for repetitive mode or its simply not finalized, but in any event, 30mhz is believable in single-shot.

author: Unknown
author_rank: Unknown
timestamp: April 10, 2011, 04:19:25 am
content: The DSO quad you linked is far better in terms of technical specs.As you say, if you want to look cool get the Oscium. After all, isn't that why you would get the ipad in the first place?

author: Wartex
author_rank: Frequent Contributor
timestamp: April 13, 2011, 02:05:27 am
content: http://www.justblair.co.uk/Oscilloscopes/seeedstudio-dso-quad-early-preview.html

author: ArtemisGoldfish
author_rank: Regular Contributor
timestamp: April 24, 2011, 05:17:10 am
content: The only way it could possibly be useful (in my opinion) is if the software had some sort of serial decoding capabilities. A single analog channel at 5MHz? Not extraordinarily useful. 4 digital channels? Hahaha, yeaaaah.

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 24, 2011, 08:54:26 am
content: if i want to convert linearly...72MSa/S @ $199.00... 1GSa/S will be $2763.8912 MSPS @ $297.99... 1GSa/S will be $24,832.5dude, where you get your math? do you primarily considering this stuff due to asthetics? or try to impress some chicks?and this is the real joke... Oscium Site..."which is why it's the preferred scope for the next generation of inventors."inventors?inventors dont need iphone to invent! all they need is just a few rusty crappy metals.last night i stumbled with 3GSa/S chip (chip alone!) that cost 3x the price of a complete Rigol, my point? ADC is the most important/expensive part in the DSO.if you are considering portability, why dont you try to consider Hantek DSO1060 60Mhz or even the USB version 5GSa/S PicoScope 6402, thats more logical in term of math (price/sample rate)
Questions about the new (upcoming) Hameg scope HMO series - Page 1
Forum section: electronics / testgear

author: Franki
author_rank: Regular Contributor
timestamp: March 24, 2011, 01:55:27 am
content: Does anyone know what the output data formats of the upcoming Hameg HMO scopes will be?csv, bmp, png, plain ascii, raw binary values of the PCMs or something different?From what I can imply out of the data sheet, it can output data over USB and optionally over RS-232, Ethernet and IEEE488 GPIB, but there is not a single word on the data format being used.Also, I would suggest any technical questions on the new Hameg HMO scopes to go in this thread.

author: Wim_L
author_rank: Regular Contributor
timestamp: March 24, 2011, 03:09:35 am
content: Given that they look fairly similar to the already existing models of the HMO series, it seems logical to expect the same formats will be available as can be found in the manual for those (CSV, BMP, GIF, PNG,...) and communication with a computer will be using SCPI.Why not simply mail Hameg and ask, though?

author: Franki
author_rank: Regular Contributor
timestamp: March 24, 2011, 04:44:01 am
content: Quote from: Wim_L on March 24, 2011, 03:09:35 amI guess, but who knows for sure?Quote from: Wim_L on March 24, 2011, 03:09:35 ambeen doing that already, takes some time to answer though. Not everyone is as fast as the EEVblog forum

author: Franki
author_rank: Regular Contributor
timestamp: March 24, 2011, 03:37:12 pm
content: OK, I just got a reply from the Hameg support line.The new Hameg scopes are going to support CSV, binary data and HRT as raw data file formats and PNG, GIF and BMP as screenshot file format.It is also going to support a hi-res averaging mode used to increase the dynamic range of non-periodic signals.
Yokogawa TY720 Multimeter - Video Review - Page 1
Forum section: electronics / testgear

author: tesla500
author_rank: Regular Contributor
timestamp: April 11, 2011, 07:53:43 pm
content: At work we've been searching for a multimeter to replace the discontinued Fluke 189, so I've had access to a bunch of different models recently. Here's one I haven't seen any other review of, the Yokogawa TY720.David

author: EEVblog
author_rank: Unknown
timestamp: April 12, 2011, 05:41:41 am
content: Nice review Dave!Strange that they use a socket and DIP IC. They expecting that sucker to blow?Dave.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: April 12, 2011, 10:56:22 am
content: Quote from: EEVblog on April 12, 2011, 05:41:41 amIt's the voltage reference (AD780) - maybe socketed to allow different precision grades. Maybe they only fit it on higher end versions.

author: saturation
author_rank: Super Contributor
timestamp: April 12, 2011, 12:52:15 pm
content: Great review! Alas, for the money its does look like there are better options, including Agilent's logging meters as options.At least the 1252a has fully configurable delays for data captureThe IR USB module is $35The less accurate meters in the Agilent series have better battery life.

author: Wartex
author_rank: Frequent Contributor
timestamp: April 13, 2011, 01:55:43 am
content: $450 for Mastech-quality soldering and $130 for pc link? Fuck everything about that, you can get Fluke 289 for that.
Where to Buy Aten scope in China - Page 1
Forum section: electronics / testgear

author: hithesh123
author_rank: Contributor
timestamp: April 10, 2011, 04:45:57 am
content: My buddy is in Shangai. I have been thinking of buying the Aten scope for a long time.Anyone know a good plane in Shangai to buy these scopes?Are they cheaper in China compared to the online prices.

author: TheEENerd
author_rank: Contributor
timestamp: April 10, 2011, 10:04:49 am
content: U mean ATTEN?

author: Bored@Work
author_rank: Super Contributor
timestamp: April 10, 2011, 10:58:24 am
content: Quote from: TheEENerd on April 10, 2011, 10:04:49 amYou mean "You"?

author: hithesh123
author_rank: Contributor
timestamp: April 10, 2011, 05:47:11 pm
content: Quote from: BoredAtWork on April 10, 2011, 10:58:24 amYes, Atten.Anything similarwill also do.

author: hithesh123
author_rank: Contributor
timestamp: April 12, 2011, 02:10:47 pm
content: Anybody?

author: photovore
author_rank: Newbie
timestamp: April 12, 2011, 07:19:31 pm
content: There is an electronics market on a street called Beijing Lu, which is very close to the famous Nanjing Lu shopping street. Thats probably a good place to look. If your friend speaks mandarin you can probably get a descent price, but as a foreigner they might try to upsell him. Its probably going to be cheaper with Taobao or other online dealers.
Rigol DS1052E in Australia - Page 1
Forum section: electronics / testgear

author: johnboxall
author_rank: Unknown
timestamp: March 18, 2011, 11:26:13 pm
content: As Dave mentioned in twitter yesterday, Australians can now buy a Rigol DS1052E locally for $439 (inc. GST and 3 year warranty) from Emona Instruments, the local authorised Rigol dealer and service agent. This will save a lot of farting about with eBay, Dealextreme/excel/whoever, Customs and so on.Link -https://secure1.ozhosting.com/emona/shop/scripts/prodView.asp?idproduct=72

author: saturation
author_rank: Super Contributor
timestamp: March 19, 2011, 10:47:40 am
content: That's great, its ~ on par with the US deal.
Fluke 8842A taken apart - Page 1
Forum section: electronics / testgear

author: reagle
author_rank: Unknown
timestamp: October 25, 2010, 12:17:02 am
content: I just had to see how this unit is built, so enjoyLots of Fluke branded ICs and also things that look like hybrids, standing vertically. Not sure what they are.The date code on most is 1992, so the meter is about 18 years old and still looking very good.

author: Unknown
author_rank: Unknown
timestamp: October 25, 2010, 09:05:59 am
content: Those white things are probably precision thin film resistor networks. I'm surprised to see only two relays, usually there are more (most of the switching is usually with relays). Apart from this, nothing unexpected. Thanks for the pictures, don't believe I've seen the inside of this one before. Don't recognize the voltage reference (it's not in the familiar ceramic packaging), according to the manual it's the (round) metal can near the Fluke-branded 40-pin DIP IC, U701.

author: saturation
author_rank: Super Contributor
timestamp: October 25, 2010, 03:57:11 pm
content: Nice, crafted well in and out of box!

author: qno
author_rank: Frequent Contributor
timestamp: October 25, 2010, 07:00:35 pm
content: I also have one for years now.The main reason I bought this is the high impedance of the DC voltmeter.> 10 Gohm, yes Giga ohm up to the 20 Volt range droping to 10 Meg in 200 V range.This is nice when measuring on CMOS circuits.The new one only has a 12V range > 10 Gohm. For me there is no need to get the new 5 1/2 digit DMM sold as Fluke/Tektronix and in the near future maybe Keithley too....

author: Fraser
author_rank: Super Contributor
timestamp: October 25, 2010, 09:10:23 pm
content: I have a pair of these multimeters and they are built to last. I bought them after the mistake of buying a UNI-T 804 (big mistake)I was impressed to find that it uses firmware driven calibration routines, and was even more impressed to discover that my units were still within specification on all modes and rangesThe fact that Fluke make the service manual available to the general public is also a bonus and, though custom LSI is in use, it is always nice to have a schematic in case the need for a repair arises.The only weaknesses I am aware of are surface corrosion in the 4mm sockets if the unit has been in damp conditions, and failure of the fast fit retainers that hold the motherboard in place. These retainers only fail due to rough handling of the meter but are quite difficult to remove, and made of brittle plastic. I used 4mm nylon nuts & screws to replace broken retainers.Great units at quite reasonable prices.

author: reagle
author_rank: Unknown
timestamp: October 25, 2010, 10:57:45 pm
content: This one was actually an ebay find for 80 USD, so for me that's a pretty good deal. It does not have option modules installed, but the basic functionality is enough for me. Full service manual with schematics is also a big reason why I tend to get big name used test equipment. Last one was an HP 54645D scope that needed an NVRAM chip with integrated battery replaced. Same thing-built like a tank, and has all service documents available.
Protek multimeters - Page 1
Forum section: electronics / testgear

author: jmcf1949
author_rank: Newbie
timestamp: October 10, 2010, 04:01:38 pm
content: Hello all, thank you for accepting me into this fantastic forum. I tried using the search function but could find no information on Protek multimeters. I have a chance to get a Protek 608 for an extremely reasonable price, and wonder what the experts here think of this brand.Regards,Jim - Semper Fi

author: armandas
author_rank: Frequent Contributor
timestamp: October 10, 2010, 04:30:05 pm
content: The meter is feature packed, but I can't comment on the quality. If the price is really *extremely reasonable*, then go for it.

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 10, 2010, 04:41:12 pm
content: may as well do the review for us.
Review - Uni-Trend Power Analyzers - Page 1
Forum section: electronics / testgear

author: Ben Yisrael
author_rank: Newbie
timestamp: September 21, 2010, 09:36:05 pm
content: Sorry, I just posted this under "beginners" since I'm a newbie.Anybody ever reviewed a Uni-trend Power AnalyzerHere is the product :http://www.uni-trend.com/UT233.htmlIt is $ 200.oo Seems to good to be trueThanxBen Yisrael

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: September 21, 2010, 09:38:53 pm
content: The link points out to an Clamp Meter !!Is this correct ?

author: Unknown
author_rank: Unknown
timestamp: September 22, 2010, 06:09:16 am
content: It's usually considered rude to open two threads on the same topic. Just use the report to moderator link and request that your other thread be moved to this forum (just a few clicks for Dave), and this thread be merged or locked.

author: Ben Yisrael
author_rank: Newbie
timestamp: September 22, 2010, 04:19:59 pm
content: Very Sorry, and Thank You for the advice on Protocol !This was only my 1st and 2nd post ever on a chat forumI will follow your adviceThanx AgainBen Yisrael

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: September 22, 2010, 05:01:38 pm
content: Ok I will link the threads by the simple way ..Go to here ..https://www.eevblog.com/forum/index.php?topic=1334.new#new