hybridfree/eevblog-posts huggingface dataset:
Any one with a fluke 289   Help - Page 1
Forum section: electronics / general

author: fa2ality
author_rank: Contributor
timestamp: January 02, 2012, 06:51:00 am
content: HiI'm not sure this is the right place to post this..I just purchased a used fluke 289 and when i try to install its firmware (same as current one) I get an error. After the software finds the device in USB (COM9) and recognizes as a fluke 289, I get this error: "The circuit board in the meter is incompatible with this update."Is it windows 7 64bit causing the problem or is it because I'm trying to reflash the same firmware it already has (if so why not give me that specific error instead of incompatible circuit board) or is there a fluke in my fluke?

author: Wartex
author_rank: Frequent Contributor
timestamp: January 03, 2012, 06:00:17 am
content: first of all, why are you flashing with existing firmware?

author: fa2ality
author_rank: Contributor
timestamp: January 05, 2012, 03:44:41 am
content: I think that is the problem, same firmware, but odd error though.

author: elafargue
author_rank: Contributor
timestamp: January 05, 2012, 04:54:08 pm
content: If you just bought a 289 - and it is a new unit - you will have firmware 1.12, which is actually newer than the firmware update available on the Fluke site (1.10 or 1.11, don't remember exactly).In other words, no need to downgrade your DMM, and since 1.12 was released because of an engineering change (hence the 'not compatible board) and does not contain anything on top of 1.11, you really don't need to do anything!

author: ron
author_rank: Regular Contributor
timestamp: January 05, 2012, 05:27:28 pm
content: Good answer elafargue.OP didn't give much information. Like from what version he was trying to upgrade. Version 1.2 isn't available for download for the reason elafargue explained.Maybe this will help. My newest 289 was made 1/24/11Board ID 3Arm bootloader V2_0_74-build june 25 2010firmware ver 1.12/v0.88Possibly v1.2 is for board 3 and above.Fluke is sometimes vague about firmware upgrades. I have especially noticed this on scopemeters.

author: fa2ality
author_rank: Contributor
timestamp: January 07, 2012, 06:18:13 am
content: I have the exact same info ^
Extech EX540? - Page 1
Forum section: electronics / general

author: Patrick Boyle
author_rank: Newbie
timestamp: January 07, 2012, 01:17:13 am
content: Hello, first post here. Wonderful forum you've got. I'm in the market for a DMM with data logging capability either on board or through live output to a PC. I'm using it for automotive diagnostics, so scientific accuracy is not needed. I'm looking at Extech's EX540, and on paper it looks amazing, but looking around there seems to be a lack of first-hand experience with it. In my opinion $300 is a lot to spend, so I'd like to be certain it's worth it.I've also seen Agilent's U1232/U1233 meters but it looks like the logging capabilities are limited (10 readings on board? Really?). Can it output live data to a PC through it's IR interface for longer logging?So I guess what I'm asking is if anyone has experience with the EX540, or any other suggestions that might work. Thanks!

author: IanB
author_rank: Super Contributor
timestamp: January 07, 2012, 01:54:06 am
content: The Radio Shack model 22-812 has external data logging to a PC for a very reasonable price.

author: Patrick Boyle
author_rank: Newbie
timestamp: January 07, 2012, 02:34:20 am
content: Wow, I had no idea such a meter existed at that price point. Do you have any suggestions for software to use with it?

author: IanB
author_rank: Super Contributor
timestamp: January 07, 2012, 05:00:24 am
content: It comes with software, though I'm not sure how well it works with Windows 7.For my own purposes I wrote a simple data acquisition program that does what I need:http://www.candlepowerforums.com/vb/showthread.php?261833-Playing-with-the-RadioShack-22-812-Meter&p=3326583&viewfull=1#post3326583
HMO 2024 Hameg Oscilloscope Review - Page 1
Forum section: electronics / general

author: DaveW
author_rank: Frequent Contributor
timestamp: January 03, 2012, 09:46:14 pm
content: In a shameless imitation of Dave's blog, we have produced a video review of a Hameg HMO2024 oscilloscope, we've got some videos for a maximum power transfer buck circuit for the ChipKit contest coming through, some LED bench lighting projects and a few other ideas coming upIf you're interested, our video is athttp://wattcircuit.com/and our youtube channel ishttps://www.youtube.com/user/WattCircuitThanks!

author: firewalker
author_rank: Super Contributor
timestamp: January 03, 2012, 10:26:15 pm
content: Nice review!No "Take it apart" section though.Alexander.

author: DaveW
author_rank: Frequent Contributor
timestamp: January 04, 2012, 12:08:42 am
content: Cheers! Yeah, the possibilty of losing the two year warranty put me off-I'll see if I can ease the labels off with a scalpel though. The bits that I can see through the case look nice...!

author: Fox
author_rank: Regular Contributor
timestamp: January 04, 2012, 01:48:03 am
content: Great Review, comes at the right time for me.Helped a lot with the decision between the Agilent MSOX2012 and the Hameg HMO1022 for my new scope.So the Hameg it will be.If you have more material oft the Scope i would be very interested to see some more.And the review is a good start for your blog, looking forward to see more from you.

author: Nermash
author_rank: Frequent Contributor
timestamp: January 05, 2012, 12:30:10 pm
content: Very nice review Dave:)The only thing missing from a big picture is the review of Rigol DS4000 series, it too claims 1 mV/div sensitivity and has some impressive features.

author: DaveW
author_rank: Frequent Contributor
timestamp: January 06, 2012, 02:38:34 pm
content: Yeah, I'd love to have a play with the Rigol-I see 2mV sensitivity, but would love to know if that's full bandwidth or if that's limited/zoomed. The headline specs are incredible, 140Mpoints memory and 140kwaveforms per second-looking forward to seeing if those are just at one or two settings, or hold up well across the settings.Fox-any bits in particular? I can go into a bit more detail and really wring through the options if you're interested.Thanks for the kind words guys, second video being filmed now...!

author: firewalker
author_rank: Super Contributor
timestamp: January 06, 2012, 02:42:11 pm
content: Can you elaborate more for the "bad user interface design"? From the video I thought it was quite good.Alexander.

author: deephaven
author_rank: Frequent Contributor
timestamp: January 06, 2012, 09:00:49 pm
content: Congrats on the video, Dave, I enjoyed watching it.

author: Fox
author_rank: Regular Contributor
timestamp: January 06, 2012, 10:04:32 pm
content: Quote from: DaveW on January 06, 2012, 02:38:34 pmHi Dave,you already helped me, i left a comment on your site.I didn't mean to film some extra material, i thought about stuff you maybe left out due time constraints or other reasons.But as firewalker said a little more depth on the "bad user interface" would be great.
Thermaltronics TMT-9000S-2 Soldering System - Page 1
Forum section: electronics / general

author: metalphreak
author_rank: Frequent Contributor
timestamp: November 09, 2011, 10:11:52 am
content: http://www.thermaltronics.com/products.phpReview on Overclockers Australiahttp://forums.overclockers.com.au/showthread.php?t=971697http://www.chemtools.com.au/Chemtools are offering a group buy price to OCAU members which is $396 inc delivery in Australia.Just thought I'd mention it here if anyone is interested. You can probably contact them directly and get the same deal. Looks like a pretty nice unit. If I had $400 spare I'd be all over it

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: November 09, 2011, 10:27:26 am
content: Apparently Thermaltronics was started by some former Metcal people when the patent ran out. The tips are compatible with Metcal.$400 is certainly a great price for what is basically an MX-5000 clone

author: robrenz
author_rank: Super Contributor
timestamp: November 09, 2011, 12:54:02 pm
content: Until yesterday I never heard of JBC soldering stations but I saw it on this threadhttps://www.eevblog.com/forum/index.php?topic=990.0After looking at the specs it looks like this outperforms all other irons in thermal recovery as shown in thishttp://www.howardelectronics.com/jbc/images/performance-comparison_1209.pdfIt has very quick one hand tip change even while tips are hot. It also will make Dave very happy since it has adjustable temperature. This also means you only have to have one tip of a particular shape instead of the various temperatures of the same tip. They have as extensive an array of tips as Metcal. I was so impressed with the specs I ordered a CD-1BB model yesterday $396.00 US with free shipping. It will arrive today. I am not a fanboy yet but you should certainly take a look at this unit before buying a station.

author: metalphreak
author_rank: Frequent Contributor
timestamp: November 09, 2011, 02:32:39 pm
content: Quote from: mikeselectricstuff on November 09, 2011, 10:27:26 amYep sounds about right. The Chemtools rep posted a fair bit in the group buy thread, but you have to have been a member for at least 3 months to read that section of the forums.Quote

author: aokman
author_rank: Contributor
timestamp: January 06, 2012, 05:54:37 am
content: i just ordered one of these units myself with some tips. Will report back about how it goes compared to my Hakkowas a good deal in any case
Rigol DG1022 questions - Page 1
Forum section: electronics / general

author: chrome
author_rank: Regular Contributor
timestamp: January 01, 2012, 07:00:19 pm
content: I might wanna buy a Rigol DG1022 (the consensus seems that it's a good waveform generator aside from the software).However i have some questions about the device.Is the output very stable (as in it won't change frequency (aside from the drift over a longer time)?Can you change the duty of a saw wave (0-100%)?What is the actual duty cycle you can have in square wave?How good would you rate the device?

author: Bored@Work
author_rank: Super Contributor
timestamp: January 01, 2012, 09:12:11 pm
content: Quote from: chrome on January 01, 2012, 07:00:19 pmAnd asside from Rigol's "support".QuoteHere is a link to the datasheethttp://www.rigol.com/prodserv/DG1000/document/?act=view&itemid=227and the user manualhttp://www.rigol.com/prodserv/DG1000/document/?act=view&itemid=230See for yourself.QuoteEspecially the PC software and Rigol's "support" don't fulfil my professional requirements.Note there are at lest three hardware versons. Two hardware versions are sold as DG1022 and are indistinguishable from the outside. And a third one sold as DG1022A. If you happen to get the DG1022 00.01 hardware you are basically screwed, since Rigol doesn't support that hardware any more at all. If you get a DG1022 00.02 hardware or the DG1022A you might get a tad of support from Rigol. Note also that Rigol in principle refuses to support people who bought their instrument on the grey market (grey import from China), completely independent of the hardware version you got.

author: chrome
author_rank: Regular Contributor
timestamp: January 01, 2012, 09:43:46 pm
content: Quote from: BoredAtWork on January 01, 2012, 09:12:11 pmWell that didn't answer anything, I'm not asking about data sheet values, I'm asking if it actually does what the data sheet says it does.

author: Bored@Work
author_rank: Super Contributor
timestamp: January 01, 2012, 09:53:57 pm
content: If you are too lazy to read, why should I go out, drag the junk out of storage, set it up and waste my time checking it out for you? You know, no one here is your servant.

author: chrome
author_rank: Regular Contributor
timestamp: January 01, 2012, 09:56:02 pm
content: If you are saying you don't wanna help then why are you posting?If you don't want to help that's fine, but saying you don't want to help seems such a waste of time.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: January 02, 2012, 04:33:49 pm
content: Quote from: chrome on January 01, 2012, 09:56:02 pmI have the DG1022 and im quite happy with it. However all questions you asked are precisely answered in the manual and data sheet BAW pointed you. Rigol is not a manufacturer which will make false claims in data sheet (at least not very false)
Tektronix 2220 Oscilloscope  - Page 1
Forum section: electronics / general

author: Peter9DO
author_rank: Newbie
timestamp: December 31, 2011, 08:05:12 pm
content: I just recently bought by first oscilloscope, in hopes to learn how to use it and add to my board level repair skill. However I'm trying to find the service manual in digital form, but have not been able to come across it. If anyone knows where I would be able to find the service manual for a Tektronix 2220 in digital format, I would praise you! I have spent many hours looking around for it with no luck what-so-ever! Thank you to anyone that would be willing to help me!

author: FenderBender
author_rank: Super Contributor
timestamp: December 31, 2011, 11:04:04 pm
content: Yeah you're right. I'm not finding any either. You may have some luck with the manual to the Tek 2232 which might have some similarities or share part or the majority of the design.http://bama.edebris.com/download/tek/2232/tek-2232.pdf

author: Peter9DO
author_rank: Newbie
timestamp: December 31, 2011, 11:26:03 pm
content: I came across this one as well, I read a post saying that just about all the 22xx series are very similar but was just checking to see if anyone had anything for the actual model 2220. Thanks for the link and looking around for me as well! It figures the scope I buy I wouldn't be able to find a service manual for it!Peter

author: Unknown
author_rank: Unknown
timestamp: January 01, 2012, 03:33:17 pm
content: Most of the 2200 series are analog scope, the 2220 is a digital scope, so I'm not sure if that statement is correct. The 2232 is another DSO, so it may be similar.
digital storage scope - Page 1
Forum section: electronics / general

author: delta75
author_rank: Contributor
timestamp: December 30, 2011, 01:21:00 am
content: Hi all,I am looking to buy a digital storage scope,i have chosen rigol over atten going by different peoples views on the web,but i have just come accross an Uni-T UTD2102CEL ,it is the same price as a rigol 50mhz and includes postage and is a 100mhz unit ,does anybody have any experience with this unit,would you choose it over the rigol 50mhz.Any view would be appreciatedThankyou Jason

author: Unknown
author_rank: Unknown
timestamp: December 30, 2011, 02:26:22 am
content: Try searching the forum (with Google, the forum search is useless). Here are some relevant threads:https://www.eevblog.com/forum/index.php?topic=1331.0https://www.eevblog.com/forum/index.php?topic=4771.0https://www.eevblog.com/forum/index.php?topic=4249.0https://www.eevblog.com/forum/index.php?topic=4114.0

author: delta75
author_rank: Contributor
timestamp: December 30, 2011, 09:42:38 pm
content: thanks for the reply after going through the threads i think i will stick to the rigol
FLUKE 561 teardown - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: October 27, 2011, 01:34:20 pm
content: Bought it as new old stock and described "does not measure"After opening all that was broken was the sensor housing plastic lock ring which cause the sensor to move and measure only the temperature in casing. Just little bit of two component epoxy got this wonderful instrument back on the track

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: October 27, 2011, 01:34:41 pm
content: .

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 27, 2011, 01:41:49 pm
content: Nice catch , but you took a risk about getting it.I am happy that you sorted it out.I have act the same in some cases too, but I was not so fortunate with one Olympus digital camera,that it did end at the garbage can.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: October 27, 2011, 02:01:05 pm
content: Quote from: Kiriakos-GR on October 27, 2011, 01:41:49 pmYes, sometime you win, sometimes you loose big time. The trash bin possibility is always open

author: Richard W.
author_rank: Regular Contributor
timestamp: December 28, 2011, 03:19:53 pm
content: nice thermometerBUT: why is the emissivity only adjustable in three predefined steps?it's only a damn factor in the software.(... and why does it have to be "made in china"?)

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: December 28, 2011, 07:16:59 pm
content: Quote from: Richard W. on December 28, 2011, 03:19:53 pmYes it can be set only in low, med, hi.I like it somewhat, but more i use it the more false readings i get
Teardown: CenterCOM MR128FT Micro Repeater - Page 1
Forum section: electronics / general

author: ElectroElvis
author_rank: Regular Contributor
timestamp: January 10, 2012, 03:04:37 pm
content: Well here is one piece of equipment that was laying in basement, It is micro repeater with optical TX/RX from Agilent.Here are some pics of it.

author: ElectroElvis
author_rank: Regular Contributor
timestamp: January 10, 2012, 03:05:54 pm
content: Sorry for bad pictures they were taken with GSM camera

author: ipman
author_rank: Regular Contributor
timestamp: January 10, 2012, 05:03:58 pm
content: That device seems to be a media convertor, not a repeater. And quite old one, according to size and components.

author: metalphreak
author_rank: Frequent Contributor
timestamp: January 10, 2012, 09:47:04 pm
content: 10base-T is pretty ancient nowCopper ethernet back then had a pretty limited range in terms of cable length. Even now I think its only ~350m max depending on specs. They'd use these at either end of a fibre link to connect equipment over longer distances. They sell similar ones now that do 100mbit, 1gbit, etchttp://www.dealextreme.com/p/10-100-1000mbps-ethernet-fiber-media-converter-transceiver-silver-105793

author: FenderBender
author_rank: Super Contributor
timestamp: January 10, 2012, 10:35:24 pm
content: Well regardless of its antiquity and usefullness, looks like it was a decent piece of equipment. Parts seem prime spec. Looks nice.

author: Wartex
author_rank: Frequent Contributor
timestamp: January 11, 2012, 04:03:09 am
content: Quote from: metalphreak on January 10, 2012, 09:47:04 pm90m spec, 115m absolute max before degrading into lower category

author: ipman
author_rank: Regular Contributor
timestamp: January 11, 2012, 01:08:44 pm
content: I work in telecom business and we call them "media converters", even back then.A repeater is something which repeats signal over the same media, e.g. BNC to BNC, UTP to UTP, etc.
EUMAX digital ultrasonic cleaner - teardown and review - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: December 24, 2011, 06:28:58 am
content: This is a new line of MemoryQuick ultrasonic cleaners from Eumax, and the only thing new is the memory button that preserves your settings in case you need to leave the room and "pause" the cleaner in its work.The model ishttp://www.eumax-cleaner.com/en/pro_show.asp?id=17Its a wide model with full tank capacity 2 L. However you need to take in account when buying one that you can fill approximately 70 % of tank with liquid and that comes to 1.4 L of useful volume.The units is quite simple and good quality at first look. The maximal setting on the timer is 30 minuttes and on the heater 80 C. Nice thing about the unit is that you get metal mesh basket while some other manufacturers sell it separately.Although it is made of stainless steel it is a lower grade (i cant surely claim which type) and they are somewhat saving money by not including the outside of unit with stainless steel screws since the unit can be moist at times of changing the liquid. The handle on the lid is made from low quality plastic and comes already half broken.I got the unit mainly for cleaning my CNC router bits. Since im using a carpet tape to fix the blank PCB to the work table the bits get contaminated with glue and PCB material dust sticks to them. I bought similiar 50 W product in local electronics store but it did not work as it should because you can see it does not use proper transducer (the last photo) which is not 50 W as stated on the package.The inside build quality is good and simple. It features a SMPS power supply for the transducer and heater. The SMPS is controlled by the board on the front of the unit which is powered by a small transformer and on board switching regulator.Regarding the cleaning efficiency it is superb! I throw a handful of glued and full of dust CNC bits inside, added water, 2 drops of dish washing detergent and set the temp to 30 C and timer to 5 minutes.They come out so clean like new, and whatever i thrown at it later came out as new. Since this unit is a genuine with proper 50 W transducer it really cleans and im perfectly happy with it.

author: saturation
author_rank: Super Contributor
timestamp: December 24, 2011, 12:21:33 pm
content: Its good to know it works well. I use a smaller 'eyeglass' style cleaner; it takes several passes but it does come out clean too. How much did it cost?

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: December 24, 2011, 10:55:11 pm
content: Its about 200 $ delivered. However im allready planing to buy bigger unit also, will teardown it when it arrives
Rigol PA1011 amp on Rigol DG1022 function gen. - Page 1
Forum section: electronics / general

author: robrenz
author_rank: Super Contributor
timestamp: December 12, 2011, 06:08:47 pm
content: I have the Rigol DG1022 and I like it, but often would be handy to have some more output watts. Has anyone used the Rigol PA1011 10W amp on the DG1022? If so does the 1022 control the 1011 over the USB cable like the DG1022 utility screen implies? Thanks for any feedback.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: December 12, 2011, 08:42:35 pm
content: I was looking to buy it but as i remember i found on some Chinese forum that there was quite alot of issues with it. Since its quite expensive im developing one myself. If you look Rigol manuals and website there is more information about what kind of panties their female assembly team wears then about the amp and how it works.
HAKKO 853 preheater - teardown - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: December 05, 2011, 05:11:40 pm
content: Pics are herehttp://www.hacklordsniper.com/Arhiva_projekata/Projekt_(37).htmlBuild quality is superb, even after the half hour the stainless steel pipe does not heat even little. Generally im quite happy with ii!Any questions, feel free to ask

author: phil_jp1
author_rank: Regular Contributor
timestamp: December 07, 2011, 04:35:50 pm
content: Thanks for posting this teardown!Really nice build quality indeed! Although, they could've isolate all the mains wires on the power connector and mains power switch.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: December 08, 2011, 09:08:25 am
content: Quote from: phil_jp1 on December 07, 2011, 04:35:50 pmAgreed, they could but they left it to me
Acer K330 - teardown - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: December 05, 2011, 05:15:54 pm
content: Pics are here:http://www.hacklordsniper.com/Arhiva_projekata/Projekt_(36).htmlFor the most pretty picture of teardown go directly here:http://www.hacklordsniper.com/Slike_projekata/Projekt_(36)/Slika%20(18).JPGThe projector is great, noise is quite acceptable, build quality is great except little flaw. The front leg is not in middle so projector can swing on left or right site. The is no focus drift with heating as reported on some forums, basically it does not heat much.Any questions, ask.PS. For the nerds the test photo is in the topic. However don't trust the camera, the projected image is superb, sharp and clear (you can surf and read on line without any problem or eye fatigue)There is a photo in dark and in light room, there is not enough brightness for a bright room.

author: FenderBender
author_rank: Super Contributor
timestamp: December 06, 2011, 10:25:38 pm
content: Looks pretty nice!
Owon SDS8202 - Page 1
Forum section: electronics / general

author: Sensor Geek
author_rank: Contributor
timestamp: November 29, 2011, 03:53:15 am
content: In the near future I should have more to report (tell me what you want to see/hear), but I just wanted to say that while so far it looks good, I'm not pleased with the fan or backlight noise. As others have reported, there is an audible noise when the display is set to less than 100% and the fan is too loud. Sounds like a dying CPU fan in an old PC overlaying the shrill flyback noise of a 70's TV set.In the following audio file, I start with a power on, at 0:06 the relays click, at 0:11 the PWM noise from the backlight begins, (cut several seconds of me fiddling with menus).. at 0:20 the display backlight is alternated from 100% to 80% and back several times. The PWM noise is unmistakable.Small MP3 file:http://sharesend.com/midwfThe display is wonderful. Functionality, while maybe not idiot-proof, is pretty easy to follow. I've yet to crack the manual and have been lost only once. This model has both VGA and Ethernet, neither of which I've tried.

author: kaz911
author_rank: Super Contributor
timestamp: November 29, 2011, 04:47:26 pm
content: hmm I just got mine last week - and I do not have any backlight noise - and fan noise is very low.

author: Sensor Geek
author_rank: Contributor
timestamp: November 29, 2011, 05:39:01 pm
content: The backlight noise is very quiet, and in fact didn't even realize it was happening until someone else mentioned it. So that's not a problem, but the fan noise was obvious from the beginning. Although, maybe if the fan goes quiet, the backlight noise will be more pronounced. Let's hope not.I'm in the US and ordered it from China, so now I'm on the fence as to whether I should crack it open and fix the fan, probably voiding warranty, or send the thing on a round trip and be without a scope for who-knows-how-long.Anyway, I've yet to see any thorough reviews of this model, so I'll post what I can about it, provided I don't kill it fixing the fan. If nothing else, photos of the guts if/when I crack it open.

author: Axel1973
author_rank: Regular Contributor
timestamp: December 05, 2011, 01:52:57 pm
content: i cannot add much to this post, buti lately found out that the mentioned OWON SDS8202 oscilloscope is also sold under the name of "PeakTech 1260" .PeakTech as i know it, is provider of pretty much "low end" or "cheap" equipments. i never seen some high quality stuff coming from them. so even i did consider to buy me an OWON osci, now that i know its also selling as PeakTech is absolutely NO OPTION to me anymore!c ya
Rigol DG4062 (vs. DG2041A) - Page 1
Forum section: electronics / general

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: November 26, 2011, 04:33:22 pm
content: Is anything known yet about the Rigol DG4062 arbitrary generator? It seems to be superior to the DG2041A in almost every aspect, plus it's 2ch vs 1ch and still it's obviously quite a bit cheaper. The main drawback (and ok, this is a big one) I could find is that its arbitrary memory is reduced to 16k (why, oh why, Rigol?). Or did I overlook something?

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 26, 2011, 04:47:03 pm
content: a link to the said devices will help us alot i think. here is the link i found:http://www.rigolna.com/products/waveform-generators/dg4062/http://www.rigolna.com/products/waveform-generators/dg2000/dg2041a/yes its almost superior in every aspect and $200 cheaper. made me sceptic, there must be something else other than the 16Kpts that made it cheaper. what about the max Vpp? its not indicated there. i will not bother to download the 3MB+ spec pdf sorry. please do tell us.

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: November 26, 2011, 05:42:26 pm
content: Yeah, I downloaded both manuals of course and tried to compare the characteristics, but I didn't really find that big showstopper yet. I.e. the output voltage is identical and the (time) jitter of the DG4000 seems to be a even a little better. The harmonic distortion (sine) is not specified for the DG4000 line below 1MHz, but at 1MHz it's better than the DG2041A. Accuracy over temperature is the same, but only the DG2041A defines an accuracy over time (e.g. one year).What's indeed a little strange is that the 60MHz DG4062 is limited to 25MHz square waves, while the 40MHz DG2041A reaches 40MHz for the square waves as well (especially taking into account the 500MSa/s vs. 100MSa/s sampling rate). Then again, for ramps, the DG4062 is better (1MHz) than the DG2041A (400kHz)...Anyway, it's also intereseting that all DG4000 devices (60MHz, 100MHz, 160MHz) seem to share the 500MSa/s sampling rate. So obviously the lower devices are just crippled regarding the selectable waveform frequencies. Well, we kinda know that from the scopes of course.BTW: on the lowest DG4000 (the DG4062) also the arbitrary frequency is limited to 15MHz. I can't imagine any reason for this apart from crippling the low end device. Anyway, again, the DG2041A is even worse (12MHz).

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 26, 2011, 05:57:05 pm
content: Quote from: 0xdeadbeef on November 26, 2011, 05:42:26 pmmaybe you can try to buy the low end one (if the high end is too expensive) and see if you can play with ":INFO:SERIAL" usb thingy. anyway i'm happy with my current AWG, so i dont think i'm going to try out the $800 device. good luck.edit: and thanks to highlight this issue (4000 is cheaper than 2000)
Fluke 289 "Recording Memory Available" - Page 1
Forum section: electronics / general

author: Richard W.
author_rank: Regular Contributor
timestamp: November 19, 2011, 10:21:19 pm
content: Hi,i have a question for all Fluke 289 users (and maybe 287).Could you please check the "Recording Memory Available"? Setup -> Meter Info  -> tenth lineMine shows 99% even when i reset the meter to factory default. (This erases the whole memory.)I assume 99% should also be ok. (http://www.phasorlabs.com/images/SV_Fluke_UsingTheFluke289_C.pdf)But it looks a bit strange to me...Richard

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 20, 2011, 12:00:08 am
content: 1% less space as "file system data storage" its not major issue.If it goes 98% after reset, this could be an problem.

author: Unknown
author_rank: Unknown
timestamp: November 20, 2011, 12:29:46 am
content: Mine is 100% when I erase everything, as you know Richard.I too would be interested in knowing why this is.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 20, 2011, 12:48:27 am
content: Do you both have the same firmware ?

author: Unknown
author_rank: Unknown
timestamp: November 20, 2011, 12:50:33 am
content: I have upgraded to the latest, but it was 100% out of the box too.

author: Unknown
author_rank: Unknown
timestamp: November 20, 2011, 12:54:29 am
content: I also cannot replicate the IR port/light issue either. A calibration sticker prevents me from taking it apart to check the boards rev number.
METRAWATT LS2 (Photo) - What can it meassure? - Page 1
Forum section: electronics / general

author: Axel1973
author_rank: Regular Contributor
timestamp: November 13, 2011, 09:43:03 pm
content: Hi Again there!Today i got a photo of an old Meter "Metrawatt LS2" which i dont realy know what it can meassure. Maybe you can Help identify??The Photo is pretty large, so i dont even try to upload here. Please check out the photo on my Project Page at:http://www.awerner.homeip.net/doku.php?id=it-artikel:metrawatt-ls2-what-does-it-measure&#metrawatt-ls2Thanks for any Help!regardsAxel

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: November 14, 2011, 05:29:18 pm
content: Well, what looks like a capital J could also be a capital I. Then it would be "Ind." - probably for Induktivität/inductivity.Google says the LS stands for "Leitungssucher" or "wire finder". So I guess it is just that: a device to find where the mains are located inside a wall.

author: Axel1973
author_rank: Regular Contributor
timestamp: November 16, 2011, 06:24:15 pm
content: hmmm... inductivity sounds like a good guess. however there are no units on the scale.but i can try soon. thanks for the guess!Any further guesses are welcome!regardsAxel

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: November 16, 2011, 08:39:51 pm
content: Hm, did you notice the 2nd sentence?Just in case you didn't: If you google for 'metrawatt "ls 2"', you'll see that it was sold on eBay as "Leitungssucher" (line tracer). So I guess that's what it is. The battery check if probably really just a test of the internal battery. The lack of any capacity scale or units hints towards that this is not really a measure instrument for capacity.BTW: does it actually have any ports? Maybe the "Ind" setting is not there to measure an inductivity, but to measure via induction if there's current flowing by connecting some kind of amps clamp while the "Kap" setting measures via capacity without an external sensor?Besides, maybe you can contact one of the eBay sellers to get more information.

author: Axel1973
author_rank: Regular Contributor
timestamp: November 17, 2011, 09:21:35 pm
content: yes i read your 2nd line therebut pretty sure its no "leitungssucher". i found that article/phrase too even before i asked here. and yes, the device got two probe ports (banana).i guess ill have to test it later in my lab with some coils n caps n stuff.thanks
Good beginner oscilloscope and what to look out for? - Page 1
Forum section: electronics / general

author: Mint.
author_rank: Frequent Contributor
timestamp: November 16, 2011, 09:44:50 am
content: Good beginner oscilloscope and what to look out for? I am new to all of this, I would prefer an analog scope because they are so damn cool. Any recommendations?

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: November 16, 2011, 10:18:57 am
content: You can find great analog scopes on ebay for few $. Its a proper way for a beginner to teach many things about the scope. A usual 200 MHz or more Tek you will find on ebay for few $ cannot be replaced by cheap DSO-s. Altrough the Rigol DS1052 is a favorite here or anywhere.

author: ejeffrey
author_rank: Super Contributor
timestamp: November 16, 2011, 01:04:42 pm
content: For analog scopes, you can usually find name-brand equipment cheap. Do this. Preferably get a Tek. The reason is twofold. First, they were built to last, and these days only cost a few $$$ more. Second, the availability of parts and manuals is much better, which will be important if something does break. If you get a reasonably popular tek scope, you can be confident that in 10 years you will be able to find a similar enough model you can cannibalize it to make yours work.An analog scope is a great tool, and one that can't be completely replaced by a low-end digital scope. It is particularly valuable as a learning tool, since there are fewer issues that can trip you up like aliasing at low sweep rates. However, if I had to pick between a basic digital scope and a basic analog scope as my only tool, I would take the any day. Some people will disagree with me, but I think that the ability to capture pre-trigger data and record single events more than outweigh all of the advantages of an analog scope. In truth it depends on the type of work you are doing and the signals you will look at -- it is just my preference. The other issue is that you can get a pretty nice used analog scope for much cheaper than a new budget DSO, so it isn't really a fair comparison.

author: Unknown
author_rank: Unknown
timestamp: November 16, 2011, 03:13:20 pm
content: I agree that a basic DSO is more useful than a basic analog scope, but a basic DSO is about $350 (Rigol DS1052E). A basic analog scope can range from free to $200 for a nice one. For less than $350, I would recommend a good used analog scope over any of the inferior DSOs with low sample rate, short memory depth, low update rate and lousy UI.
DS1052E - Page 1
Forum section: electronics / general

author: BigSicilian
author_rank: Newbie
timestamp: November 22, 2011, 02:18:24 am
content: I am considering a new one but I wanted to make sure they can still be soft-flashed to the next higher model. If not I will save a bit more for the 1102 outright since eBay is nuts on the price for the 1052 used.First post so I hope I didn't break some rule lol!

author: Wartex
author_rank: Frequent Contributor
timestamp: November 22, 2011, 10:56:25 pm
content: this topic has been beaten to death here. Use search function.

author: SgtRock
author_rank: Unknown
timestamp: November 22, 2011, 11:51:04 pm
content: Dear BigSicilian:--Please feel free to post any questions you may have on this forum. More than likely you will find someone who can help you. The person who responded to you in such a rude and hostile manner is indeed a member of the forum, but other that that he has no special standing.--Fudd is know to bear grudges, and when he gets weally weally angwee he posts his screeds in extremely large fonts. He has even managed to get some of his comments deleted, an achievement on this forum. If you hang around long enough you will get acquainted with the other two Sensei of the TrollHouse Dojo; Frick and Frack. Pay none of them any mind.--In any case welcome to the EEVBlog. I cannot answer your question, but I am pretty sure that someone else can. Dave has done a video or two on it and, as Fudd indicated there are numerous posts on the Rigol DS1052E, though why he would expect someone making his first post to know this is beyond me.--I for one would be glad to hear anything you or anyone else (make that nearly anyone else) has to say about one of the most popular scopes in the world."He was born ignorant, and has been losing ground ever since."Fred Allen 1894 1956Best RegardsClear Ether

author: A Hellene
author_rank: Frequent Contributor
timestamp: November 23, 2011, 06:24:16 pm
content: Hello Sicilian; and welcome.Searching the forum, as sggested, someone can find workarounds not only for the current firmware revision (2.05) but for the upcoming one (2.06) as well! There can also be found not onlyschematicsof the specific device but even parts of its firmwaredisassembled! Be warned, though: Thisclassof test instruments might give their ownersa few surprises...-George

author: BigSicilian
author_rank: Newbie
timestamp: November 25, 2011, 06:18:09 am
content: Awesome. Looks like I will take advantage of a little black Friday magic here in the states and get the 1052 and flash it. Thanks!

author: ChrisKiwi
author_rank: Contributor
timestamp: November 25, 2011, 11:11:32 am
content: Quote from: BigSicilian on November 25, 2011, 06:18:09 amIf or when you do, let us know how it went. I haven't done mine yet. Some people have had some bad luck and ended up bricking their scope, though not many people have reported this. I believe this is the main guidehttps://www.eevblog.com/forum/index.php?topic=553.0One useful tip regarding the forum is that you can be notified of replies to threads - there is a button on the top right hand side.
Kindle Fire Tear Down Website - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: November 16, 2011, 10:46:15 am
content: The color version of the Kindle is meant to compete with the Barnes and Noble Nook, though both are Android OS tablets. These are not general purpose like the Toshiba Thrive and Samsung Galaxy. The Toshiba Thrive allows owner to change its battery in the future. Surf here for some Amazon Kindle Fire tear down with the rear cover removed:http://www.androidtabletblog.com/after-teardown-amazon-kindle-fire-is-an-open-book-2/
Retro Teardown: Electromagnetic Industries- Voltage/Frequency Meter - Page 1
Forum section: electronics / general

author: FenderBender
author_rank: Super Contributor
timestamp: October 30, 2011, 10:30:30 pm
content: Hey guys,This is an old voltage detection meter and has a built in frequency function. Very simple circuit and meter. It's dated 1974.

author: Chet T16
author_rank: Frequent Contributor
timestamp: October 30, 2011, 10:52:58 pm
content: How awesome is that board?!

author: FenderBender
author_rank: Super Contributor
timestamp: October 30, 2011, 11:19:49 pm
content: Awesome. LOL.

author: tekfan
author_rank: Frequent Contributor
timestamp: October 30, 2011, 11:21:22 pm
content: Is there even a battery in that thing?

author: FenderBender
author_rank: Super Contributor
timestamp: October 30, 2011, 11:28:10 pm
content: Nope. Didn't actually bother to see how it works but my bet is that there's some sort of rectification going on, which is why all the components are marked for such high voltages. A lot of high voltage going on.

author: FenderBender
author_rank: Super Contributor
timestamp: October 31, 2011, 01:29:36 am
content: Quote from: Chet T16 on October 30, 2011, 10:52:58 pmGotta love old school layout/trace style.

author: Frangible
author_rank: Regular Contributor
timestamp: October 31, 2011, 09:28:21 pm
content: Quote from: FenderBender on October 31, 2011, 01:29:36 amThat style comes from the mask being laid out on transparent plastic sheets at large scale using thin sticky tape for the lines. The tape had a certain minimum bending radius at which it would try to peel off the plastic, so it made for smoothly curved lines. My wife was still doing that when I met her in 1990 - new boards were designed with CAD systems, but enough old board designs were still around to call for someone experienced with those materials.

author: FenderBender
author_rank: Super Contributor
timestamp: October 31, 2011, 11:40:54 pm
content: Quote from: Frangible on October 31, 2011, 09:28:21 pmHey there's something I bet a lot of people don't know! Or atleast I didn't...
MX26 vs. U1272A - first comparison - Page 1
Forum section: electronics / general

author: PetrosA
author_rank: Frequent Contributor
timestamp: December 06, 2011, 03:13:42 am
content: The first real test was performed tonight by my daughter, AmeliaShe always preferred the Agilent Blue DMMs on their website when we looked together, so as soon as she saw the AEMC tonight, she declared it "MINE"

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: December 06, 2011, 05:56:55 am
content: Damn ... is that bad ?
Pictures: Fluke TL175 "Retractable" Test Probes - Page 1
Forum section: electronics / general

author: FenderBender
author_rank: Super Contributor
timestamp: October 30, 2011, 10:43:53 pm
content: I bought these probes because I didn't really like the probes that came with my Amprobe AM-270. They weren't bad but I don't think they were quite designed for electronics work. The Fluke TL175s have retractable shrouds that provide increased or decreased CAT ratings when you retract or detract the shroud. Pretty handy. Fluke calls them "TwistGuard" probes. So if you need higher levels of isolation, just twist it and the shroud comes out. Made in the USA.Here's some pictures.
Inside old ampere meter - Page 1
Forum section: electronics / general

author: norEL
author_rank: Contributor
timestamp: October 29, 2011, 11:43:29 pm
content: A little video of inside my old panel mount ampere meter.http://youtu.be/d1dRea9h7cI

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 30, 2011, 12:06:39 am
content: The current shunt looks like hellOther than that Perfect ..

author: tesla500
author_rank: Regular Contributor
timestamp: October 30, 2011, 12:37:40 am
content: Quote from: Kiriakos-GR on October 30, 2011, 12:06:39 amThat's no shunt, that's the meter's coil, which handles the full measured current. It has seen better days, but there's virtually no voltage stress between turns. There could be voltage stress to case though, something to watch out for if using the meter.

author: amspire
author_rank: Super Contributor
timestamp: October 30, 2011, 01:21:54 am
content: Looks like a moving iron meter. If it is, it can do both DC and AC current, and it is true RMS - unlike a moving coil meter.
Need help grounding my DJ gear. - Page 1
Forum section: electronics / general

author: Mint.
author_rank: Frequent Contributor
timestamp: October 29, 2011, 12:27:28 am
content: Hey guys I recently got some DJ gear, however the problem is there is a small grounding knob at the back and I have no idea what to connect it to. Please help me out, thanks!

author: DrGeoff
author_rank: Frequent Contributor
timestamp: October 29, 2011, 01:08:12 am
content: My son has one of these Audioline MDEX3 units as well. The unit is double insulated and has no safety gound connection. This little thumbscrew is for attaching the shield wire of your external turntables if you use the phono option.

author: Mint.
author_rank: Frequent Contributor
timestamp: October 29, 2011, 02:19:38 am
content: Oh perfect, thanks for the reply!

author: ciccio
author_rank: Frequent Contributor
timestamp: October 29, 2011, 11:09:43 am
content: The ground lug is a relic of ancient times.Then, when you where hearing some "buzz" from the speakers, you started to wire the ground lugs together, in any order, trying to kill the "buzz".I think that now it has no more reason of being there, if not for some analog turntable..

author: DrGeoff
author_rank: Frequent Contributor
timestamp: October 29, 2011, 11:51:43 am
content: Quote from: ciccio on October 29, 2011, 11:09:43 amThe DJ unit has phono inputs and RIAA preamps, switchable from the line inputs. The GND is still required with these low level sources, unless you are using a properly balanced phono stage, which are very uncommon.
Sony Jumbotron - extreme teardown - Page 1
Forum section: electronics / general

author: firewalker
author_rank: Super Contributor
timestamp: October 08, 2011, 11:15:08 am
content: Excelent!Alexander.

author: Spiro
author_rank: Contributor
timestamp: October 10, 2011, 12:45:33 am
content: Oh boy!You make my day with that teardown.But(t) you really have shakeEeEe hand... I almost got sea sickness

author: Frangible
author_rank: Regular Contributor
timestamp: October 10, 2011, 03:18:05 pm
content: I second the shaky-hand syndrome. I had to watch it in bits because it was so distracting. But it was worth it to see the tear-down.

author: ivan747
author_rank: Super Contributor
timestamp: October 11, 2011, 02:06:16 am
content: To solve the shaky hands problem you can add some image stabilization to the clips. I think most video editing packages offer it.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 11, 2011, 11:23:52 am
content: I may have just forgot to turn the camera's IS on - I did this vid in a bit of a hurry!Will remember to use tripod more in future - mine is a bit big & can be unwieldy at times - must get a small one.

author: FenderBender
author_rank: Super Contributor
timestamp: October 28, 2011, 02:17:55 am
content: Wow you really knew what you were talking about. Excellent video mate. Really enjoyed it.

author: Armin_Balija
author_rank: Regular Contributor
timestamp: October 28, 2011, 02:43:58 am
content: I find your reviews, teardowns, and vids to be awesome and obviously you know your stuff. I find it hard to keep up when you speak though because you talk too fast for my lame ears.

author: Jimmy
author_rank: Regular Contributor
timestamp: October 28, 2011, 06:23:26 am
content: awesome tear down yeah you got a shaky hand and go fast at times but you vids are excellent and I watch them a couple of times. Keep up the good work Mike I enjoy your vids soooo much