hybridfree/eevblog-posts huggingface dataset:
Holiday sale -- 25% off all SeeK Thermal cameras - Page 1
Forum section: electronics / testgear

author: -jeffB
author_rank: Regular Contributor
timestamp: November 24, 2015, 04:11:22 am
content: Just got email from SeeK with a link to save 25% on all products (Compact, XR, Reveal) through "Cyber Monday" (30 November 2015):http://obtain.thermal.com/category-s/1818.htmThat brings the Compact down to US$187, the XR down to US$225, and the Reveal to US$300. Wonder if FLIR will respond?

author: miguelvp
author_rank: Super Contributor
timestamp: November 24, 2015, 08:33:17 am
content: Too bad I replaced my old Compact with an XR just last month and bought it directly from them

author: -jeffB
author_rank: Regular Contributor
timestamp: November 24, 2015, 05:53:37 pm
content: Of course, if we're worried too much about prices dropping on things we've already purchased, we've probably chosen the wrong hobby.

author: all_repair
author_rank: Frequent Contributor
timestamp: November 25, 2015, 08:13:18 am
content: I have a E4 for my lab, old Seek compact for field need. Now want a small standalone thermal cam for field, but FLIR C2 is still on the old lepton core, so I am left with the choice of Seek Reveal this Christmas, or better choices next Christmas.Just waiting for Mike Electric teardown of Reveal. Can he make it before 30Nov?

author: kaz911
author_rank: Super Contributor
timestamp: November 25, 2015, 11:45:00 am
content: Amazon UK will have a Prime Early Access / Lightning Deal on the iOS XR in 16 minutes (so 12 UK time)http://www.amazon.co.uk/dp/B00Y2QO6N0/ref=gbps_img_s-3_9267_da5f9bb3?pf_rd_p=666929267&pf_rd_s=slot-3&pf_rd_t=701&pf_rd_i=gb_upcoming&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_r=075BJ2NNSR7KJFRQKKPH
The screen colors on my Rigol are inverted. - Page 1
Forum section: electronics / testgear

author: nbritton
author_rank: Frequent Contributor
timestamp: November 26, 2015, 05:32:48 am
content: Take a look at the picture, I turned on my Rigol MSO4014 today and the screen colors appear inverted. Their is also a flicker on the screen. The video on the VGA out port is the correct color.

author: tautech
author_rank: Super Contributor
timestamp: November 26, 2015, 05:36:02 am
content: Display options....Invert?

author: nbritton
author_rank: Frequent Contributor
timestamp: November 26, 2015, 05:56:16 am
content: Quote from: tautech on November 26, 2015, 05:36:02 amNo I don't think there is an invert option in the menus. Even the bootup screen is inverted.

author: nbritton
author_rank: Frequent Contributor
timestamp: November 26, 2015, 06:18:53 am
content: I left it on for like a 30 minutes and now the screen is black again, but it is washed out, the contrast is jacked.

author: Whales
author_rank: Super Contributor
timestamp: November 26, 2015, 06:41:57 am
content: It may be as a bad connector to the LCD. Gently poking around with a pencil on flat flex cables and connectors near/on the screen can identify this. A problem that looks this consistent suggests it may be a fault in a parallel signalling interface (where one bad connection causes ~1 fault), so the cables with the most traces are the ones you should be looking at.

author: nbritton
author_rank: Frequent Contributor
timestamp: November 26, 2015, 06:59:23 am
content: I left it off for like 30 minutes and then turn it back on and now its normal.Now it's broken again... it appears to break only when I want to use it, it's like a mysterious Rigol quantum observer effect

author: crispy_tofu
author_rank: Super Contributor
timestamp: November 26, 2015, 07:02:40 am
content: That happened on one of my Acer laptops a few years ago... something in the display might be dying.Could just be a loose cable or something, though...

author: nbritton
author_rank: Frequent Contributor
timestamp: November 26, 2015, 07:56:50 am
content: Quote from: Whales on November 26, 2015, 06:41:57 amI would void the warranty if I opened it up for the purposes of repairing it. In the USA, only modification is allowed (due to the Magnuson–Moss Warranty Act) without voiding the warranty per the fine print in the Rigol warranty contract. Seesection 5(4):Quote

author: dadler
author_rank: Unknown
timestamp: November 26, 2015, 08:54:32 pm
content: You'll need to send it back to Rigol for repair.Here is how my repair went:https://www.eevblog.com/forum/testgear/rigol-ds2072a-spurious-signals-and-display-corruption/

author: Zero999
author_rank: Super Contributor
timestamp: November 26, 2015, 11:27:11 pm
content: I don't know what it's like where you live but here in the UK, if a product is faulty, you should return it to the retailer/distributor, as that is who you made the contract with, rather than the manufacturer.
ATTEN ADS1062cal to Siglent 100 or 150 Mhz - Page 1
Forum section: electronics / testgear

author: croma641
author_rank: Regular Contributor
timestamp: November 25, 2015, 05:45:59 am
content: Hi,my Atten ADS1062CAL hacked to Siglent 1102CNL firmware (last version, July 2015) works like a charm ... but.. the scope is still at 60 Mhz, not 100.You can check it, considering that the 100 Mhz model has a Time/DIV to 2,5 ns and the ADS1062CAL hacked has only the 5 nS option.Any hints to "transform" to the 100 or 150 Mhz version ? ***Thanks in advance - Andrea -*** considering the Rigol and Hantek hacks

author: tautech
author_rank: Super Contributor
timestamp: November 25, 2015, 06:38:38 am
content: Quote from: croma641 on November 25, 2015, 05:45:59 amAFAIK nobody has taken the time to hack the Atten or Siglents.A FW change as you have done is quite common and some even use the LeCroy FW.The CAL (Atten) or CNL (Siglent) have been upgraded to the 2M memory depth models (CML Siglent) and there is a thread here somewhere explaining this.Good luck with your BW hack, please post your results.
Diy lisn ampflier  - Page 1
Forum section: electronics / testgear

author: sheitbrink
author_rank: Newbie
timestamp: November 24, 2015, 04:18:07 pm
content: HiI've seen a few post on making your own LISN network and measuring the conducted emissions. I was wondering if any one has thought of doing an amplifier so this could be interfaced with a standard o-scope. I'm mainly concerned about emissions from buck regulators that operate from 500k to 2Mhz. Most of the energy is going to be bellow 30Mhz, so an o-scope would be fine, but the only problem is sensitivity. Most o-scopes only seem to go down to 500uV, which is right about the level of some of the highest conducted limits.Plus it would be nice if some mishap happened, a relatively inexpensive amplifier bit the dust instead of a several thousand dollar o-scope or spectrum analyzer.
1500 USD budget to buy two multimeters - Page 1
Forum section: electronics / testgear

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 23, 2015, 08:34:35 am
content: Hi,I have a 1500USD budget to buy multi-meters, I wanted a 6.5 Digit bench units something like 34461A and a 4.5 or 5.5 digit hand held units (maybe U1281A), I need them for my precision works, there is so many choices and I can not made my mind yet,what model and brand do you suggest? I'm new into precision electronics and my budget is limited,so any help and advise would be highly appreciated.Regards

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 23, 2015, 10:09:09 am
content: Thanks,changing 6 AA's for F289 is a night mare! what do you think of keysight or gossen metrawatt?

author: EEVblog
author_rank: Unknown
timestamp: November 23, 2015, 10:39:55 am
content: Quote from: blueskull on November 23, 2015, 09:00:52 amThe most accurate handheld available is this Gossen:https://www.gossenmetrawatt.com/english/produkte/metrahit30m.htm

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 23, 2015, 11:03:03 am
content: Thanks dave for the info,But it's outside of my budget and also I need it to be able to handle 10A current too.

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: November 23, 2015, 11:32:25 am
content: There is also the Metrahit Ultra with "slightly" worse specs - but it can take 10A (and as usual - with as single input from 1nA to 10A).https://www.gossenmetrawatt.com/english/produkte/metrahitultra.htmIt's a bit slow though, no bargraph either and despite of the claims of the homepage, MetraWin10 doesn't support it without hacking its ID in some dll.There's also a version with BT, but there's just an Android App as far as I understand. The IrDa version works fine with myDIY adapterthough (apart from the Metrawin10 issue).

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 23, 2015, 12:24:40 pm
content: Thanks,Any suggestions regrading what parameters I should consider for a newbie who wants to enter the precision world? also any Ideas about 6.5 digit bench meter?

author: PedroDaGr8
author_rank: Super Contributor
timestamp: November 23, 2015, 01:40:51 pm
content: Quote from: ali_asadzadeh on November 23, 2015, 12:24:40 pmYou would be hard pressed to do better than the 34461A at its price point. Additionally, since you are in the middle east. Keysight is offering a free BenchVue DMM Pro module with the purchase of the 34461A. This gives you additional computer integrated functions that can help in data logging and the like.

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 23, 2015, 02:36:21 pm
content: Thanks,So 34461A and U1282A are considered a good combination?

author: PedroDaGr8
author_rank: Super Contributor
timestamp: November 23, 2015, 03:47:26 pm
content: Quote from: ali_asadzadeh on November 23, 2015, 02:36:21 pmAny reason you haven't considered the Brymen BM869S? I have one of those and REALLY like it. That being said, I have not owned a Keysight handheld meter before so I can't comment on the U1282A.
Power Design 4005R - Manual - Page 1
Forum section: electronics / testgear

author: dan3460
author_rank: Frequent Contributor
timestamp: November 10, 2015, 07:26:35 pm
content: I just bought a Power Design 4005R, variable power supply. I have not gotten it yet but trying to find information about it. Does anyone have a copy of the service manual?

author: NF6X
author_rank: Unknown
timestamp: November 10, 2015, 07:42:52 pm
content: I don't have the service manual yet, but my similar model 5005R has served me well for many years.

author: eas
author_rank: Frequent Contributor
timestamp: November 10, 2015, 08:47:47 pm
content: If you can't find exactly what you are looking for, I'd look for manuals for similarly specced PD supplies of newer or older generations, and also for multi-source supplies with similar specs on a single source. I've found that route useful when researching other PD supplies that I can't find a proper manual for. Also, some of the PD docs cover multiple supplies, but downloads may not be labeled as such.

author: dan3460
author_rank: Frequent Contributor
timestamp: November 16, 2015, 03:21:35 pm
content: Found a websitehttp://www.ko4bb.com/getsimple/that have some manuals. The closest to my 4005R is the 2015R, the others there have 2 transformers and some of them have op amps in the circuit.Some one out there must have a copy

author: dan3460
author_rank: Frequent Contributor
timestamp: November 24, 2015, 03:34:41 pm
content: Trying to keep this alive, I'm trying to reverse engineer this thing, but it is very difficult because of the way that is made. Somewhere out there must be a manual stashed in a pile of books.Help,
Request for manual: Leader 3213 - Page 1
Forum section: electronics / testgear

author: mehdi
author_rank: Regular Contributor
timestamp: November 23, 2015, 07:59:36 pm
content: HiI bought two used tools today:a Fluke 7220A frequency counter (240$) and a Leader 3213 signal generator (160$)I found the manual for Fluke, but I can't find anything for Leader on Internet.FYI, Leader is (was?) a Japanese manufacturer of electronic test equipment.Anyone to help? (I need the instruction manual)Thanks

author: crispy_tofu
author_rank: Super Contributor
timestamp: November 23, 2015, 11:37:49 pm
content: Have you tried searching at the links shared here?https://www.eevblog.com/forum/repair/repair-documents-and-links-sticky-me-please-mods/

author: sorenkir
author_rank: Regular Contributor
timestamp: November 24, 2015, 08:04:39 am
content: I had some success in the past contacting Leader USA and asking for manuals.Maybe there:http://www.leaderamerica.com/about-us-video-test-equipmentMichel.

author: mehdi
author_rank: Regular Contributor
timestamp: November 24, 2015, 10:01:30 am
content: Quote from: sorenkir on November 24, 2015, 08:04:39 amThanks. They replied to my request very quickly! (less than an hour)I wish every company's support were like these.
Black Friday Deals? - Page 1
Forum section: electronics / testgear

author: nbritton
author_rank: Frequent Contributor
timestamp: November 25, 2015, 09:53:39 pm
content: Anyone know of any black friday deals that are relevant to us here?

author: kripton2035
author_rank: Super Contributor
timestamp: November 25, 2015, 09:57:13 pm
content: 20% off from any xojo licences (IDE for raspberry pi and windows and linux and macos and ios apps)http://www.xojo.com
Keysight / Agilent U8000 series power supplies - UART debug mode? - Page 1
Forum section: electronics / testgear

author: nidlaX
author_rank: Frequent Contributor
timestamp: November 23, 2015, 02:01:17 am
content: Does anyone know if the U8000 series power supplies have some sort of option for debug / testing control over the UART? I can see that they use it for firmware download, but I imagine that they must have included some provision for automated testing / QC / calibration of the boards without having to fumble with the front panel. A real service manual would be informative, but Keysight only provides the user manual on their website.

author: skennedy
author_rank: Contributor
timestamp: November 23, 2015, 06:06:40 am
content: I don't think the U8000 series has anything particularly user friendly remote control features. Probably why they are actually not crazy expensive like most of their other supplies. There was some discussion awhile ago regarding the schematic for these supplieshttps://www.eevblog.com/forum/testgear/agilent-u8002a-ps-schematic/. Maybe this might help?

author: nidlaX
author_rank: Frequent Contributor
timestamp: November 23, 2015, 06:50:57 am
content: Quote from: skennedy on November 23, 2015, 06:06:40 amThanks, but I don't foresee the schematic being of particular use. In normal power on mode, the UART is completely unused, as far as I can tell. These AD micros only allow you to read back what you've written to flash during the first programming instance. Thereafter, flash read-back is disabled to prevent you from dumping the firmware. I do wonder whether there are any workarounds for that.What I'm looking for is along the lines of a combination of button presses or data to send via the UART on power up or a jumper somewhere to configure the firmware into some sort of debug control mode. Failing that, getting a dump of the firmware would be excellent.
Tektronix 2213 - Auto Intensity not working - Page 1
Forum section: electronics / testgear

author: dan3460
author_rank: Frequent Contributor
timestamp: November 22, 2015, 05:28:19 pm
content: Still working on this thing. It seems to have very little control over the intensity of the beam. Manual here:http://www.hellspark.com/dm/ebench/tools/Analog_Oscilliscope/tektronix_2213_service.pdfWorking on "Auto Intensity and Z Axis <6>".Probing for signal 18 (pin 11 U825) I get something similar but a lower top voltage around .8v.Signal 19 (pin 1 U835) no signal, steady .9V.Signal 20 (pin 7 U835) some kind of signal, but I think is leakage from other part of the circuit. Voltage -1.2v Attached picture.Signal 21 (R856) Similar signal to the chart, a little higher voltage 32V, the "SWP Z-AXIS Signal" is at 20V.I suspecting U825 (there are signs that was previously changed as the solder is a different color) by following the schematics I should have some kind of signal on pin 14,3 and 4, definitely on 4 as this feeds one of the opamps on U835. Should I replace U825?

author: moya034
author_rank: Regular Contributor
timestamp: November 22, 2015, 10:34:20 pm
content: U825 may indeed be bad, but if it has already been replaced once, I'd like to know why two have failed in the same unit. Perhaps a resistor or capacitor near it has also failed?I'll be following along with interest... I have one of these scopes myself I picked up cheap at a hamfest. It has an issue with channel 2 that I have to troubleshoot one of these days. Perhaps a calibration procedure too.

author: dan3460
author_rank: Frequent Contributor
timestamp: November 23, 2015, 02:28:31 am
content: Thanks for the answer, this is a scope that I bought on ebay and I will be giving it to a kid that is learning electronics. I already solved a problem with channel 2. You can see the problem on this same forum.
Hantek DSO1000E Series - Review/Features of handheld scope model DSO1202E - Page 1
Forum section: electronics / testgear

author: tbsmith
author_rank: Contributor
timestamp: November 22, 2015, 03:37:08 pm
content: I am a novice scope user, but since there was very little information on line about these handheld scopes, I thought I'd give my impression of the DSO1202E I bought a couple of weeks ago.In no particular order, I'll just list some of the features, pro's and cons:FEATURESComes with 2 probes, DMM leads, power cord, battery, USB cord, power cord/charger, software, and a soft case that holds everything.The unit is heavier than expected, but feels well built. It is SP51 rated (dustproof and splashproof)The screen is 15 divisions wide instead of the usual 10As others have said, there is a white LED on the back of the unit that can be turned on (after going several menus deep), but it isn't very brightPROsThe buttons have a good feel and the unit doesn't move when on its stand when the buttons are pushed.Has a USB port and slot for microSD card for remote control (I haven't tried it) and saving files. I tested saving files to a thumb drive and micro SD card and it was simple.A beep can be set for each button press.Has adjustable auto power off and back light off timer settingsSome buttons, if held, bring up a help menuThe unit is silent as there is no fan and yet it stays cool after an hour of running on battery. I haven't tested full battery life - the longest I ran it was about two hours and it still had juiceThe start/stop, Autoset and AutoRange keys light upIt has DMM functions which I probably won't use since I'd likely use a dedicated DMM instead. Response time isn't bad, unlike what others have commented on about different brands/models.You can record voltage and other DMM readings, kind of like a strip chart recorder and that will come in very handy (one of the reasons I bought this particular model). You can change the recording sample rate and it will plot the values real time on the screen.The DMM readings can be displayed while in scope modeExcellent screen brightness, resolution and viewing angleCONSNo external trigger inputDoesn't detect probe sensitivity switch settings (1X/10X)No network or video out connectionsDoesn't show sampling rate so you have to calculate it based on memory depth and time settings (and factoring in for the 15 division wide screen)Horizontal division increments are 2,4,8 not 1,2,5 (undecided on whether this is really a con)Shows more noise on the trace compared to my analog scope, but as this is my first digital scope, maybe it is normal (it does have averaging mode which cleans it up a bit)I don't have any equipment to test the accuracy/performance but using my signal generator, it seems to do what it should. One more thing. I couldn't find this locally so I reluctantly bought it on ebay. I got it from seller techrecommends and I can't speak highly enough of their customer service.Hope this helps,Tom
MCS7840 based quad USB/RS232 port - Page 1
Forum section: electronics / testgear

author: picitup
author_rank: Regular Contributor
timestamp: November 22, 2015, 05:09:21 pm
content: Hi AllAfter obsessively adding native RS232 ports to all my kit, I'd like to share with you the purchase of a quad USB/Serial port. It cost about £19.00. It works really well and on the Asix web site, they seem to have drivers for pretty much every version of Windows including CE, the mac and linux:http://www.asix.com.tw/products.php?op=pItemdetail&PItemID=110;74;109&PLine=74I don't have all these operating systems, but all 4 ports installed fine on my Windows 7 64 bit laptop and my daughter's Windows 8.1 64 bit laptop.I've taken the thing apart and added some piccies below. As noted above, the main chip is the MCS7840 and the RS232 line drivers are Sipex SP213 chips which have 4 drivers and 5 receivers so can handle the full RS232 handshaking lines. I didn't check this out thoroughly, but belled out all 8 DB9 pins and all seem to connect to different pins on the SP213 so I'm guessing it's the full suite of handshaking lines is supported. With a full set of lines, it should be possible to leech power for a level converter easily. The data sheet for the SP213 is here:http://silicon-verl.de/home/flo/projects/meridian/sp213.pdfOf course, there's always a gotcha. When I took a closer look at the insides I noticed traces of rust on the DB9 and USB connectors, so I guess it's been exposed to water at some point. But not to worry too much, it works just fine.The other advantage of it in my view, is that it's not FTDI. In the past I've looked specifically for FTDI based chips but the bricking drivers from them have have made me nervous. What a bad move!Well that's about it so thanks for reading.....Steve
GPIB Transfer Speed on Agilent 54642D (5462X series) - Page 1
Forum section: electronics / testgear

author: NickAmes
author_rank: Contributor
timestamp: November 18, 2015, 10:19:07 am
content: I have an Agilent 54642D MSO scope (the high end model of the 54621 series). I'd like to be able to get data off the scope more quickly than the built-in 57600 baud serial port can manage. (With 8M of memory, downloading the entire dataset takes about 15 minutes; even a screen shot can take 15 seconds.) Would the N2757A GPIB module allow this? I know that GPIB is, in principle, much faster, but I don't know how well it works in practice.

author: max-bit
author_rank: Frequent Contributor
timestamp: November 19, 2015, 01:10:12 pm
content: 56kbps = 6,2 kB/s8MB / 6,2 kBs = 1321s/60s = 22mGPIB real speed ~1 MB/sPriceeBay auction: #171976913010OreBay auction: #111543416537

author: TSL
author_rank: Regular Contributor
timestamp: November 19, 2015, 08:11:04 pm
content: GPIB screen capture is quickI capture screens from my 54720A with this software...http://www.printcapture.com/index.htmlFor yours, there is also a Keysight free utility....http://www.keysight.com/main/software.jspx?ckey=360519&lc=eng&cc=US&nid=-536900197.536897319&id=360519

author: max-bit
author_rank: Frequent Contributor
timestamp: November 19, 2015, 08:19:52 pm
content: Printcapture not is freeCurrently, I use the soft DataLogger by Eltima ver 2.7 (simple) for RS232Alternative software for GPIBhttp://www.ke5fx.com/gpib/readme.htm

author: TSL
author_rank: Regular Contributor
timestamp: November 19, 2015, 09:23:17 pm
content: Quote from: max-bit on November 19, 2015, 08:19:52 pmIts not expensive either and I did point to the free Keysight s/w which will also download instrument settings etc.Quote from: max-bit on November 19, 2015, 08:19:52 pmOk, but that's just a serial port logger, not a screen capture utilityQuote from: max-bit on November 19, 2015, 08:19:52 pmYe all great s/w. I use the 7470 emulator from that kit to capture screens from my HP8966B SA.Its of no use for the scopes since they don't support a plotter
Hioki 3239 Benchtop Multimeter - Page 1
Forum section: electronics / testgear

author: pascal_sweden
author_rank: Super Contributor
timestamp: August 23, 2015, 09:45:43 am
content: Anyone with experience on the benchtop multimeters from Hioki?These benchtop multimeters are made for industrial applications such as production and inspection lines.http://www.amazon.com/Hioki-3239-01-Digital-Multi-Meter/dp/B001GAEKP4How do they measure up against Agilent and Keithley?They have a very nice look and feel!Here is a short product guide about the benchtop multimeters from Hioki:https://www.hioki.com/filedownload/3239E7-49M.pdf?t=catalog&iid=1_1090

author: commie
author_rank: Frequent Contributor
timestamp: August 23, 2015, 05:12:57 pm
content: Hi Pascal sweden,My first port of call resolution 200 000 counts not bad at all.My second port of call accuracy of basic 2Vdc range=0.025% absolute shite for a 51/2 digit multimeter made in Japan aswell

author: pascal_sweden
author_rank: Super Contributor
timestamp: November 20, 2015, 03:08:17 pm
content: Any more feedback from forum users here about this Hioki 3239 Benchtop Multimeter?I think that the display is looking really fancy, and it is definitely a nice benchmeter to impress friendsTherefore I am looking for more feedback, reviews, information about retailers in Europe, etc.

author: PedroDaGr8
author_rank: Super Contributor
timestamp: November 20, 2015, 03:27:43 pm
content: Quote from: pascal_sweden on November 20, 2015, 03:08:17 pmBased on the stats and features versus price, the Keysight 34461A absolutely destroys this Hoiki meter. The 34461A can be had for $1020 from TEQuipment.net and it absolutely beats this meter in almost EVERY single way. I started to make a list but in pretty much every category, the Keysight is better AND cheaper. The keysight is more accurate, has a higher input impedance on the lower voltage ranges, higher resolution, faster max sample rate, the 34461A can do AC voltage down to 3Hz (10Hz for the 3239), the hioki doesn't have USB, etc. etc. etc. all for less than the price listed on Amazon.

author: fivefish
author_rank: Frequent Contributor
timestamp: November 20, 2015, 04:00:43 pm
content: For $1400, I would drop that money on a keysight and not some unknown brand.

author: PedroDaGr8
author_rank: Super Contributor
timestamp: November 20, 2015, 04:15:22 pm
content: Quote from: fivefish on November 20, 2015, 04:00:43 pmHioki is far from am unknown brand. They are one of the premier test equipment manufacturers. If I remember correctly they have made devices with both LeCroy and HP, though I might be thinking of Iwatsu on that. Either way, that doesn't change the fact they are a known and respected brand. They, like many other Japanese manufacturers, have been hit by Japan's weak economy. As a result they are losing/have lost their competitive edge in the space. This model is not worth the price charged dye to the strong offering from KeysightSent from my LG-ls990 using Tapatalk
Tektronix 2246, locked up - Page 1
Forum section: electronics / testgear

author: sidspop
author_rank: Contributor
timestamp: November 21, 2015, 12:05:41 am
content: Do you ever have one of those times when the Midas Touch strikes, everything breaks at once?I have a 2246, had it 25 years or so. Came to me for peanuts, so it has earned its' keep.It decided to get amnesia, and completely locked up. None of the front panel buttons work, some LEDs are on, some not.I didsome interweb searching, it said push up and down for diagnostics, but as they don't work it wont.That's all it does. So i put the feelers out and gained an older mainframe and plugins 7013, which seems to be ok.I am toying with the idea of buying a knackered one to get this going, and give me spares. I suspect the processor board has gone daft. I recall the Self Cal used to be quick, and it slowed rightdown. Not done a great deal of testing on it, voltages at main PSU connector were correct.All connectors ok. The screen itself fine, with focus etc working.And the next one, which I have had some joy with. I will post this in case anybody searches for it.An IFR1200 Tranciever test set. 0-1,000MHz sig gen, power meter, scope, SINAD. Very clever machine, i will learn how to drive it one day to its' fullest extent.On power up, it sometimes locked, sometimes didn't. There is a 3 volt button cell for backup, which is well noted on the net. Also a couple of electrolytics on the same board. All changed and still playing up. Another suggestion was a corrupted eprom, and the cure was to remove and short two pins to clear something.However, I think i may have cured it. By running it on a 13.8 power supply, it has turned on every time and locked, so i presume the internal PSU is dirty. If that's the case, i will just run off external, as I have a 50 amp supply for the bench. Which leads me on to......I picked it up a few weeks back. Well made homebrew. 6 no 2N3055 as pass transistors, dirty great smoothing caps, and soft start. I went and got that on my truck, and went cross country to get an engine. When I got home, i took the strap off engine, it rolled and smashed the voltmeter on PSU.Anybody else have my kind of luck?There are

author: tautech
author_rank: Super Contributor
timestamp: November 21, 2015, 01:38:23 am
content: I'd be winning to bet your old Tek has now got bad caps.You say you've checked PSU voltages but have you checked ripple is within limits?If this turns into a repair thread, and it should, put up a link to the Service manual you're using so we can all be on the same page.Here's a thread with a few links for manuals and Tek parts that might be handy.https://www.eevblog.com/forum/repair/repair-documents-and-links-sticky-me-please-mods/msg477909/#msg477909Do get this one:http://www.sphere.bc.ca/test/tek-parts/troubleshooting-scopes.pdf
Does work Tektronix DPO4000(not B) with probes TPP1000 or TPP0500? - Page 1
Forum section: electronics / testgear

author: Marchello
author_rank: Contributor
timestamp: November 11, 2015, 09:32:26 pm
content: Does work DPO4000(not B) with probes TPP1000 or TPP0500?Which models probes with interface TekVpi supports this oscilloscope?

author: robert_
author_rank: Regular Contributor
timestamp: November 12, 2015, 04:37:45 pm
content: No.Will not fit mechanically, MDO3/4k have an extra coding notch on the TekVPI connector to accomodate TPP0500 probes. I also doubt the software on older scopes will support these new probes and their (software)compensation.

author: Marchello
author_rank: Contributor
timestamp: November 19, 2015, 11:28:44 am
content: Quote from: robert_ on November 12, 2015, 04:37:45 pmThanks robert_ !I almost bought 2 x TPP1000 for my MSO4034 but eventually bought a 2 x P6139BNow I think buy a probe to measure the DC current for analyse DC/DC convertors.Best regards!Mark
TTI (THURLBY Thandar) TS3023S question & feedback ? - Page 1
Forum section: electronics / testgear

author: coriolan
author_rank: Newbie
timestamp: November 19, 2015, 07:50:45 am
content: Hi all,Am looking for used power supplies on ebay and found a TTI TS3023S for 250 EUR / 270 USD / 375 AUDIt has 2x 0-30V @ 2A, 1x4-6V @ 4A - Full specs sheet:http://www.gigatest.net/tti/pdf/psu-ts-2p.pdfDo you know if the 2x0-30V outputs can be wired in series / parallel to double the available voltage / current ?Does anyone have any feedback on this particular model ? I couldn't find this model anywhere on this forum... ?Thanks !Coriolan
In Circuit Test Equipment for finding faults - Page 1
Forum section: electronics / testgear

author: theBigK
author_rank: Contributor
timestamp: November 16, 2015, 07:08:42 pm
content: Hi everyone,I have been looking at in circuit testers. Huntrons seem way out of my budget, the 3200s is roughly $10,000. The Fados 9F! (http://www.protarge.com/?p=products&id=29) seems reasonable although expensive simply because of the actual equipment looks to be kind of cheap, it is roughly $2000-$3000Is there anything else out there for comparing two boards and finding XY differences and saving them?I searched the forum and didn't really find any answers.

author: saelig
author_rank: Contributor
timestamp: November 16, 2015, 08:31:18 pm
content: Yes! ABI Electronics make a fine PCB testing system that will do exactly that - compare a good board with a DUT. We distribute their products in USA. See here for more details:http://www.saelig.com/category/MFR00134.htmand a YouTube demo video here:Alan Lowne CEO Saelig Co. Inc.

author: theBigK
author_rank: Contributor
timestamp: November 18, 2015, 09:31:34 pm
content: thanks for the response, can you give a price estimate and suggestion for which hardware? I mostly deal with remanufacturing ECU for vehicles, and also transmission control units.

author: rickv14623
author_rank: Frequent Contributor
timestamp: November 18, 2015, 09:37:19 pm
content: Just sent you a PM about this
Software Capture screen TDS 5, 6, 7 via RS232 ? - Page 1
Forum section: electronics / testgear

author: max-bit
author_rank: Frequent Contributor
timestamp: November 18, 2015, 02:46:51 pm
content: HiI am looking for software to grab images from the oscilloscope Tek 5xx, 6xx and 7xx via RS232 port.Printcapture is TRIAL.

author: KE5FX
author_rank: Super Contributor
timestamp: November 18, 2015, 09:58:26 pm
content: I just posted an update to7470.EXEthat can acquire host-requested plots from those scopes. It's clunky and awkward to use compared to PrintCapture, but you get what you (don't) pay for.Example from a TDS 694C, with four separate plots overlaid:There is also a batch file (tdsbmp.bat) that will acquire a color .bmp image from the TDS 5/6/7xx scopes without going through HP-GL:You don't get alotof color, but it does work. The batch file uses the talk.exe and binquery.exe utilities that already existed in the toolkit. It's a good example to work from if you want to do other things with these scopes via GPIB.You should be able to use these programs with a direct RS-232 connection, but it will require some manual configuration via the 'Edit CONNECT.INI' button (seeQ. My instrument has an RS-232 serial port rather than a GPIB port. Can I use the Toolkit with it?in theFAQ.)Finally, you may need to use Shift-Utility -> Config -> RS232 on the scope to enable hardcopy output via the RS232 port; I haven't tried that. The RS232 parameters will need to be copied into CONNECT.INI (or vice versa), and I don't know offhand if a null-modem cable or a straight-through cable will be needed. That may be mentioned in the scope's operating manual.

author: max-bit
author_rank: Frequent Contributor
timestamp: November 18, 2015, 11:03:16 pm
content: Thanks for your response.I tested.Currently, I use the soft DataLogger by Eltima ver 2.7...or use HyperTerminal
Kiethley vintage meters: What differences are there between 197 and 197A? - Page 1
Forum section: electronics / testgear

author: cvanc
author_rank: Frequent Contributor
timestamp: November 16, 2015, 02:28:17 pm
content: Are these the same except for case color? Thinking of picking one up... thanks.

author: fc12
author_rank: Newbie
timestamp: November 16, 2015, 03:25:33 pm
content: according to a youtube video I just saw, only minor differences. On 197A power cord detachable, backlit LCD, other color of case.Daniel

author: tooki
author_rank: Super Contributor
timestamp: November 16, 2015, 04:57:40 pm
content: http://www.tek.com/sites/tek.com/files/media/media/resources/197_197A_diff.htmlQuote

author: cvanc
author_rank: Frequent Contributor
timestamp: November 17, 2015, 02:35:27 am
content: Many thanks; exactly the info I was looking for.

author: tooki
author_rank: Super Contributor
timestamp: November 17, 2015, 09:58:37 am
content: Oh? Do you have a calibration manual?

author: tooki
author_rank: Super Contributor
timestamp: November 18, 2015, 01:22:35 pm
content: I have a 197 I got on Ricardo earlier this year; they seem to sell for far less here than they do on eBay in USA!
HP6653A tests - Page 1
Forum section: electronics / testgear

author: KJDS
author_rank: Super Contributor
timestamp: November 17, 2015, 08:57:51 pm
content: I've just powered up a HP6653A power supply. This is a delicate thing weighing in at about eeek I need a weightbelt, but gives up to 35V at 15ASo I've set it to 35V into a 25 ohm load and it's measuring 34.931 on a Keithley 2015THDI'll post again in about 45 minutes when it's time for me to stop working to see how much it's drifted.

author: KJDS
author_rank: Super Contributor
timestamp: November 17, 2015, 09:43:25 pm
content: I've finished for the evening, DMM is now reading 34.9312.I'm monitorubg the voltage at the end of some poor leads, unplugging the load and it measures 34.9901V which is rather more satisfactory.

author: Jwalling
author_rank: Unknown
timestamp: November 18, 2015, 11:19:59 am
content: Quote from: KJDS on November 17, 2015, 09:43:25 pmIn order to get the best accuracy at the point of the load, you have to use the remote sense lines (-S and +S), otherwise the greater the load, the greater the voltage drop.Jay

author: VK5RC
author_rank: Unknown
timestamp: November 18, 2015, 11:24:35 am
content: I am a bit of a 66xx 65xx etc fan, but have 3 of the lower models; with that much grunt, be REALLY careful the decimal place is in the correct spot when you set current limit, get it wrong and the magic smoke won't escape, the part will reach escape velocity! HiHi.

author: KJDS
author_rank: Super Contributor
timestamp: November 18, 2015, 01:44:06 pm
content: Quote from: Jwalling on November 18, 2015, 11:19:59 amI've just moved the monitoring point and it's much better. Still not as perfect as using remote sense though.
Transferring Hameg oscilloscope's data to PC - Page 1
Forum section: electronics / testgear

author: mehdi
author_rank: Regular Contributor
timestamp: November 16, 2015, 09:45:49 pm
content: HiI own a R&S (Hameg) HMO1002.Does anyone know if it's possible to capture the data of logic analyzer and transfer it to PC via USB?What we can do with USB/Ethernet access, other than sending commands to device or taking screenshot?Can we download data from oscilloscope to PC for further analysis/decoding?Thanks

author: tinhead
author_rank: Super Contributor
timestamp: November 16, 2015, 11:44:59 pm
content: afaik latest HM Explorer does support HMO1002 and CSV Export function

author: mehdi
author_rank: Regular Contributor
timestamp: November 17, 2015, 10:45:28 am
content: Thanks.Is there anything else available?Like some programming API for getting data out of oscilloscope to PC.

author: gsocker
author_rank: Contributor
timestamp: November 17, 2015, 11:19:24 pm
content: Quote from: mehdi on November 17, 2015, 10:45:28 amYou can get data out of the instrument using SCPI commands. How exactly you access the instrument to send commands and receive data will depend on the interface type (LAN or USB), the OS you are running, and the programming language you will be using.A programming reference is available from R&S athttps://cdn.rohde-schwarz.com/pws/dl_downloads/dl_common_library/dl_manuals/gb_1/h/hmo1002_2/SCPI_HMO1002_en_v005_20141024.pdf
Show Pictures of analog portable scopes... - Page 1
Forum section: electronics / testgear

author: alank2
author_rank: Super Contributor
timestamp: November 16, 2015, 01:03:07 pm
content: I enjoyed the teardown of the portable, compact, small display, type of analog scope Dave did a teardown on. Please post pics of the same and/or other portable small screen *analog* scopes. Insides pics seeing how they crammed it all together are a bonus!

author: SLJ
author_rank: Frequent Contributor
timestamp: November 16, 2015, 02:59:43 pm
content: Non-Linear Systems MS-230 two channel 30 MHz portable Miniscope.

author: alank2
author_rank: Super Contributor
timestamp: November 16, 2015, 06:56:38 pm
content: Very cool!!

author: tautech
author_rank: Super Contributor
timestamp: November 17, 2015, 06:53:20 am
content: Here's a thread:https://www.eevblog.com/forum/testgear/aaron-bs-310s-cro-mini-teardowm/

author: crispy_tofu
author_rank: Super Contributor
timestamp: November 17, 2015, 07:41:58 am
content: Following...There's afew mini oscilloscopesinMartin.M's Tek Restoration thread

author: alank2
author_rank: Super Contributor
timestamp: November 17, 2015, 01:48:53 pm
content: I like that 221 on 565 pic!

author: OldSchoolTechCorner
author_rank: Frequent Contributor
timestamp: November 17, 2015, 02:17:49 pm
content: Tektronix 212 that I had to repair a while ago

author: alank2
author_rank: Super Contributor
timestamp: November 17, 2015, 02:22:59 pm
content: That is very cool - what are all the model numbers for this series from Tek? It seems like I've seen 214, 221, ?

author: Shock
author_rank: Super Contributor
timestamp: November 17, 2015, 03:37:08 pm
content: Tektronix 314 (have one, internal pic's are BFXs)
Looking for a user manual for a DI-BAR MTS-300L electronic load - Page 1
Forum section: electronics / testgear

author: Jwalling
author_rank: Unknown
timestamp: November 17, 2015, 02:37:39 pm
content: I've looked everywhere for this, and have come up empty-handed. Anyone know where I could get a copy? Pdf preferred, but hard-copy would be OK too. These must be pretty rare as Google doesn't even get any hits - not even on the company!DI-BAR -Electronic Products Inc.Unless this is the same company:http://articles.orlandosentinel.com/1988-10-24/business/0080010001_1_minority-suppliers-supplier-development-council-geThanks.Jay
HP 53310a Modulation Domain Analyzer - Page 1
Forum section: electronics / testgear

author: ruairi
author_rank: Frequent Contributor
timestamp: November 16, 2015, 08:11:16 pm
content: Hi all,I've been using a friends HP 53310a to look at some clocks in an AP system one as well as word clocks in my studio. It's a truly wonderful machine and a joy to use.I've considered picking one up as they are fairly affordable. Option 10 adds an Oven Controlled Crystal which improves performance and there are used units available with that option. The other approach of course is to connect an external 10 MHz reference.For someone who is interested in looking at clocks mainly for audio in the MHz range is there a sense of which might perform better/be more appropriate? I must admit to knowing very little about 10MHz references, GPS locked or otherwise. Are they better for long term accuracy or short term stability (the latter is more important for my purposes).Excuse my ignorance, this is a new area of study for me.Thanks,Ruairi

author: bingo600
author_rank: Super Contributor
timestamp: November 16, 2015, 09:10:41 pm
content: For short term stability , not much is better than a good well aged OCXO./Bingo

author: wn1fju
author_rank: Frequent Contributor
timestamp: November 16, 2015, 10:43:55 pm
content: You can start a lot of arguments on the subject! I suggest you google "Time Nuts" and look through some of the contributor's pages. In my experience, the "experts" seem to care mostly about stability, not accuracy, for their argument is that they can calibrate out the inaccuracy (once they measure it). A good OCXO usually has nice short term stability, but the Allan Variance (a measure of stability) tends to climb back up at longer time intervals. The GPS disciplined OCXO tends to force the Allan Variance back down.I also have an HP 53310A and consider it one of HP's most "under-advertised" pieces. I also have its cousin, the HP 5371A, which can do a few more things, but runs a lot slower than the 53310A.A bit of caution on a used one, however. The Boeschert power supplies are notorious for leaking their electrolytic caps. I've had the occasion to work on two 53310As, and both supplies were toast. Fortunately, they also can be found in a lot of other HP pieces, like some of their scopes and logic analyzers.

author: ruairi
author_rank: Frequent Contributor
timestamp: November 16, 2015, 10:52:44 pm
content: Superb info Gents, thank you.

author: G0HZU
author_rank: Super Contributor
timestamp: November 17, 2015, 12:27:52 am
content: I can remember using the HP53310A back in the 1990s as a tool for measuring/plotting synthesiser lock time. Prior to this I had tried various classic methods for testing lock time on my designs but the HP53310A was a huge step up in performance both in terms of speed, accuracy and also in the level of detail seen during the lock process. A classic piece of HP test gear
Associated Research Omnia 6 safety analyzer two minute teardown - Page 1
Forum section: electronics / testgear

author: jitter
author_rank: Frequent Contributor
timestamp: November 16, 2015, 09:51:34 pm
content: Today I had the opportunity of a two-minute teardown of one of our safety analyzers, an Associated Research Omnia 6 which is a real beastie.It's big and heavy, one strong person can just handle it.It can do a number of tests like AC withstand, DC withstand, isolation resistance, earth connection resistance and probably a lot more I never used.It can work stand-alone or controlled by a PC. Whichever way you use it, the user interface is not very intuitive.I had the cover off (oops, there goes the calibration void sticker) because of some issues with the memory. Being of a pre-flash era I was looking for a dead backup battery, but I could only find an old school RTC (well, the whole unit is old-school) with built in battery, and it still works. The service centre wants € 600 to repair it. But given that even second hand these go for over 10,000 USD, we might spend that...Of course this thing's guts are interesting enough to share the few snapshots I took while having a peak inside... Sorry for some of them not being in focus.

author: jitter
author_rank: Frequent Contributor
timestamp: November 16, 2015, 09:54:16 pm
content: Part 2.

author: jitter
author_rank: Frequent Contributor
timestamp: November 16, 2015, 09:55:30 pm
content: Last but not least part 3.

author: AF6LJ
author_rank: Unknown
timestamp: November 16, 2015, 09:59:16 pm
content: Okay, nice pictures but I have to ask...What does this thing do?It looks like a beefy power supply inside.

author: jitter
author_rank: Frequent Contributor
timestamp: November 16, 2015, 10:14:25 pm
content: It's an electrical safety tester.Mains powered devices must undergo HiPot testing before they're sold to the customers, and this thing can do that. Basically, it checks with a high voltage if the insulation between primary and secondary is strong enough. This one can do that with AC or DC and the result is a leakage current un uA. It can also do insulation resistance, which will be in MOhm. The devices I test usually are between 3500 and 4000 MOhm.It can also measure ground connections (safety earth) and it uses a very high current (I believe 10 A) to reveal weak connections, results will be in mOhm.I was told by a colleague that this particular version can also power the device under test and analyse the power drawn. I never used that functionality, though.

author: AF6LJ
author_rank: Unknown
timestamp: November 16, 2015, 10:15:40 pm
content: Thank You