hybridfree/eevblog-posts huggingface dataset:
Presentation and question about Siglent SDG5082 - Page 1
Forum section: electronics / testgear

author: vueltinguer
author_rank: Newbie
timestamp: March 14, 2015, 01:44:17 pm
content: Hi, my name is Jose Luis, I'm technical engineer in electronics and this is my first post in EEVblog, so first I want to say Hello! to everyone.I'm about to purchase an AWG, after comparing with Rigol units, it's almost sure that it will be a Siglent one, but I need it to be able to lock one channel with adjustable phase with the other channel (I need to generate two sine waves in quadrature). I think SDG1025 has this feature since last firmware, but I'm not sure if newest model SDG5082 has the same feature. I've been reading many posts about this unit, but I haven't find and answer to this question.Thanks in advance,Jose Luis

author: tautech
author_rank: Super Contributor
timestamp: March 14, 2015, 07:05:42 pm
content: Welcome to the forum.Link to ALL available manuals for the SDG5000 series:http://www.siglentamerica.com/prodcut-wd.aspx?id=90&tid=16&T=2Sorry I can't be of more assistance, mayberf-loopwill spot your post and answer your question.He has a 5000 series AWG

author: vueltinguer
author_rank: Newbie
timestamp: March 15, 2015, 01:48:32 pm
content: Hi, Tautech, thanks for the link. I had already read user manual and datasheet, but there is no info about this function. I hope rf-loop can help me.

author: IvoS
author_rank: Frequent Contributor
timestamp: March 15, 2015, 02:14:50 pm
content: If I understand correctly......you need two sine waves 90deg out of phase to each other and you want to adjust phase of one sine wave?Possible.If you don't mind some rust inside.....

author: vueltinguer
author_rank: Newbie
timestamp: March 15, 2015, 02:25:13 pm
content: Yes, in fact it would be even better if I could adjust any phase value of one channel with other channel with any waveform, including arbitrary waveforms. ¿How can you do it in this model? I could not find this option in the user manual.

author: IvoS
author_rank: Frequent Contributor
timestamp: March 15, 2015, 02:27:25 pm
content: You can adjust phase any direction of both channels independently. Press parameter button and phase button.

author: vueltinguer
author_rank: Newbie
timestamp: March 15, 2015, 02:50:34 pm
content: Ok, so I suppose that you can "lock" one channel to the other channel. Maybe Siglent factory is very close to the sea...Thanks!

author: Siglent
author_rank: Regular Contributor
timestamp: March 16, 2015, 02:04:22 am
content: Quote from: vueltinguer on March 15, 2015, 02:50:34 pmHi Vueltinguer,I doubt you are asking about Channel Coupling function, SDG5000 series does not support not. Am I right?

author: vueltinguer
author_rank: Newbie
timestamp: March 16, 2015, 04:01:02 pm
content: Yes, that´s what I mean. So it is only available in SDG1000 series?(I suppose there´s no possibility of enabling channel coupling by firmware updates...)
Scullcom youtube channel - review/teardown of older DMM - Page 1
Forum section: electronics / testgear

author: retiredcaps
author_rank: Super Contributor
timestamp: March 03, 2015, 10:20:24 pm
content: For those that like the older DMM meters, I found this channel a few days ago. So far he has done a teardown of Keithley 175A, Datron 1065 and Thurlby 1905A.https://www.youtube.com/channel/UCDqryeq1kMDSEQwltWqASrA/videosIn his opening shot, he definitely has a lot of T&M equipment so hopefully he will have more in the future.

author: daqq
author_rank: Super Contributor
timestamp: March 16, 2015, 12:35:21 pm
content: Thanks! Subscribed.

author: quarks
author_rank: Frequent Contributor
timestamp: March 16, 2015, 02:04:16 pm
content: indeed very well done reviews
Rigol DS1000Z series pricing - Page 1
Forum section: electronics / testgear

author: Trailboss
author_rank: Contributor
timestamp: March 15, 2015, 08:47:21 pm
content: I have decided to pull the trigger and purchase the 1054z model and noticed that tequipment is out of stock, I did read Evan's post that they are waiting on restock, but I did notice that tequipment has one on ebay for $470.00 up from $399.00 on their website.I was going to call in the morning, but maybe he can jump in and let us know if future pricing is going to be increased, I have no problem with this, just looking for clarification, or maybe I missed something here along the way.Best RegardsJ. Vincent Collins

author: JohnnyBerg
author_rank: Frequent Contributor
timestamp: March 15, 2015, 08:58:41 pm
content: Quote from: Trailboss on March 15, 2015, 08:47:21 pmYou actually did. There is a worldwide shortage on this model. Most importers have gotten new stock past week, but that was sold in advance.

author: miguelvp
author_rank: Super Contributor
timestamp: March 16, 2015, 04:40:35 am
content: Quote from: JohnnyBerg on March 15, 2015, 08:58:41 pmActually it's simpler than that, Ebay cost them money so that's why the price there is higher.Evan has explained this at least once in the past in this forum.So don't buy it from Ebay and get it from their site.

author: Muxr
author_rank: Super Contributor
timestamp: March 16, 2015, 04:46:07 am
content: I ordered mine from Tequipment about a month ago. Order status page says it will ship in 2 days. I read a post on here from one of the Tequipment employees, saying that once their stock order arrives they will have about 250 in stock. So you might be in luck.edit: found the link to it:https://www.eevblog.com/forum/testgear/new-rigol-ds1054z-oscilloscope/msg621857/#msg621857

author: Trailboss
author_rank: Contributor
timestamp: March 16, 2015, 11:15:45 am
content: Thanks for the clarification, I failed to read the note in bright orange concerning the delivery date on the eBay site:eBay"Estimated between Tue. Apr. 14 and Mon. Apr. 27This item has an extended handling time and a delivery estimate greater than twenty business days".I am hoping they have enough inventory to supply current demand.
BK Precision 1856D - Page 1
Forum section: electronics / testgear

author: Docholiday
author_rank: Regular Contributor
timestamp: March 15, 2015, 03:18:48 pm
content: Any thoughts on this frequency counter? A present from girlfriend. Should I keep it or get rid of it. The frequency counter that is - not my girlfriend!Cannot find any reviews on it! So its kind of a red flag for me and a plastic (cheap & thin) case and even cheaper handle.Thanks...

author: tautech
author_rank: Super Contributor
timestamp: March 15, 2015, 08:16:44 pm
content: Material presents from a girlfriend.......Get rid ofherit.

author: Mark
author_rank: Frequent Contributor
timestamp: March 15, 2015, 09:34:53 pm
content: This is an opportunity for you to do the first review! Don't forget to call it a world exclusive

author: Docholiday
author_rank: Regular Contributor
timestamp: March 15, 2015, 09:40:30 pm
content: I would love to! But I do not have the in depth knowledge to pull it off. I just started my 3rd year in ee. Besides I feel what I have in electronics would not be enough to perform some qualification testing.Thanks....

author: Jay_Diddy_B
author_rank: Super Contributor
timestamp: March 15, 2015, 09:58:35 pm
content: Hi,Frequency counters in general are not used as often as they used to be.Analog scopes, in general, did not have a the ability to measure frequency or time accurately. Modern digital scopes gave accurate timebases derived from a crystal so they are able to measure frequency and time with quartz accuracy.Synthesized and DDS signal generators have also reduced the need for frequency counters.They are still used if you need better than 10ppm accuracy.Do you have a multimeter, scope, power supply, good soldering station etc. There may be something more useful.If you have the basic instruments, you may want to consider an LCR meter like the DER DE-5000.The analog discovery board that was recently reviewed by Dave would also be great. You should be able to get the student discount.Regards,Jay_Diddy_B

author: Docholiday
author_rank: Regular Contributor
timestamp: March 15, 2015, 10:01:54 pm
content: Thank you Jay, I am going to check out that board...
4$ LC meter -with 555 may be  - Page 1
Forum section: electronics / testgear

author: dave_j_fan
author_rank: Regular Contributor
timestamp: March 15, 2015, 03:31:50 pm
content: i Have recently tested this L -meterhttp://apexys-toan.blogspot.in/2011/02/ne555-based-inductivty-meter.htmlIt works very nicely in uH rangewith some tweak did 10mH range tooI suppose with constant L we can use this a cap meterI like as it is vv simple , all ppl have a n xtra 555 and sm spare NPNSThere is an issue , if no coil is there it over shoots ....may damage analogue meteri came up with a preventer ckt as in the attachment ..please share your views

author: Napalm2002
author_rank: Regular Contributor
timestamp: March 15, 2015, 03:53:38 pm
content: Cool I like building stuff

author: dave_j_fan
author_rank: Regular Contributor
timestamp: March 15, 2015, 05:58:10 pm
content: the preventer is not able to fully zero the meter .. will try volt divider to do that
Using an inexpensive LA to explore simple devices - Page 1
Forum section: electronics / testgear

author: drakke
author_rank: Regular Contributor
timestamp: March 15, 2015, 02:15:34 pm
content: Hello,I am a beginner and breadboarding an 'electronic dice' circuit that uses a CD4017 decade counter.I would like to explore how this device works and wondered if a cheapish USB logic analyser like this one ...http://www.ebay.ca/itm/PC-USB-Logic-Analyzer-34CH-100MHz-125MHz-With-Support-I2C-SPI-UART-PWM-/321589919850?pt=LH_DefaultDomain_0&hash=item4ae040c06a... might be used.I have a signal generator that can supply the clock cycles and wondered if this LA will show me how the output pins change.I don't want to spend more than $80-100.Thanks.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 15, 2015, 02:50:38 pm
content: Quote from: drakke on March 15, 2015, 02:15:34 pmIt's more than enough, with room to grow. For free, you can download LTSpice and simulate the circuit.
Hantek DSO5072P Error - Page 1
Forum section: electronics / testgear

author: andy_b
author_rank: Newbie
timestamp: January 06, 2015, 02:27:16 pm
content: Hi,I have a Hantek DSO5072P and for a while it would occasionally start up with the error "Error: Fpga version does not math with the app!! but now it is doing it every time I turn it on. When it errors like this the device is completely unresponsive and all I can do is turn it off. I have not modified or hacked it in anyway, all I have done is upgrade the firmware and this was a few months ago.Does anyone know what this error might mean ? and whether it is fixable ?

author: Winston
author_rank: Regular Contributor
timestamp: March 15, 2015, 10:54:06 pm
content: Quote from: andy_b on January 06, 2015, 02:27:16 pmI don't have the same problem, but wonder if you've contacted Hantek "tech support" via email and got the same help and response I have about my problem -none.
Farnell TSV70 unknown component value - Page 1
Forum section: electronics / testgear

author: stephunk
author_rank: Contributor
timestamp: March 14, 2015, 07:50:03 pm
content: Dear EEVblog usersHas anybody got this power supply? I need to know the values of capacitors C7 and C12 on circuit board 1. They should be visible on the right side after uncovering. In the schematic, there is no value next to this components, any BOM and i have no clue and no way to find out..I would be very thankful for your help!!
DataBoy - Page 1
Forum section: electronics / testgear

author: nidlaX
author_rank: Frequent Contributor
timestamp: March 12, 2015, 03:43:57 am
content: QuoteQuoteWat...

author: McBryce
author_rank: Super Contributor
timestamp: March 12, 2015, 08:53:50 am
content: Hi,This reminds me of the half built GBDSO (http://www.radanpro.com/Radan2400/TestShematics/GameBoyScope.pdf) I bought on ebay back in the day. It never worked and I never bothered finding out why. At the time I thought it would be "fun to have", but it was really just a toy and other projects stopped me from ever doing anything more with it.McBryce.

author: macboy
author_rank: Super Contributor
timestamp: March 12, 2015, 12:58:49 pm
content: These types of projects were not so uncommon 10 or so years ago when those consoles were cheap and plentiful. Back then you couldn't go on ebay and buy a color touchscreen TFT LCD for $5 plus an arduino knockoff to control it for another $5, and just download software software libraries and bang out some working code in a morning. Using a 16x2 character LCD was still fashionable, but you could get a monochrome 128x64 character LCD with piss poor contrast for $40 or so if you wanted. And of course you had to figure out the datasheet and write the software libraries yourself because that was new stuff; you couldn't just borrow code from other people's hobby projects because there were none (at least none that used the same LCD controller as your module had).

author: nidlaX
author_rank: Frequent Contributor
timestamp: March 12, 2015, 07:04:25 pm
content: Quote from: macboy on March 12, 2015, 12:58:49 pmYeah sure, but the fact that they're still trying to sell this for $100 on eBay when the HanTeks of the world are commonplace...

author: McBryce
author_rank: Super Contributor
timestamp: March 14, 2015, 05:16:58 pm
content: If anyone wants to try and resurrect my GBDSO, they are welcome to it for a lot less than $100McBryce.Gesendet von meinem Motorola DynaTEC 8000X mit Tapatalk 2.

author: miguelvp
author_rank: Super Contributor
timestamp: March 14, 2015, 11:49:20 pm
content: Quote from: McBryce on March 12, 2015, 08:53:50 amLink is dead, but it's available on the wayback machine:https://web.archive.org/web/20140807190854/http://radanpro.com/Radan2400/TestShematics/GameBoyScope.pdf
Rigol MSO2072A Question(s) - Page 1
Forum section: electronics / testgear

author: Electro Fan
author_rank: Super Contributor
timestamp: March 13, 2015, 08:24:15 pm
content: At about 16:10 in this video the scope shows 1ns on what looks like the time base setting toward the top of the scope screen. It's my understanding that both a DS2072 (regular and A) and a MSO2072A only go to 5ns on the time base. Just curious what the 1ns readout in the display represents?Also, anyone know what the resolution is on this user's issue?(In the Rigol spec sheet it says "Minimum Detectable Pulse Width Digital channel: 5 ns", I think):http://www.tequipment.net/Rigol/MSO2072A/Mixed-Signal-Oscilloscopes/

author: Luddi
author_rank: Newbie
timestamp: March 14, 2015, 01:27:17 am
content: may he unlocked it to the MSO2302A?

author: Electro Fan
author_rank: Super Contributor
timestamp: March 14, 2015, 03:12:53 am
content: Quote from: Luddi on March 14, 2015, 01:27:17 amSeems to be an original MSO2072A since that's what it says on the front of the unit in the video....

author: miguelvp
author_rank: Super Contributor
timestamp: March 14, 2015, 06:41:03 am
content: Quote from: Electro Fan on March 14, 2015, 03:12:53 amAs Luddi said, maybe it's unlocked to be the 300MHz equivalent.
please recommend: logic analyzer and oscilloscope for simple projects (Arduino) - Page 1
Forum section: electronics / testgear

author: YigalB
author_rank: Newbie
timestamp: March 13, 2015, 08:47:02 am
content: I need logic analyzer and oscilloscope for simple projects, mostly Arduino.I prefer USB devices to save desk space, and for mobility.For example, Hantek 6022BL, because it has them both - even if not at same time.Do you think it will be good enough?I am concerned about the software, and capabilities like triggering and bus analysts.Thank youYigal

author: ebastler
author_rank: Super Contributor
timestamp: March 13, 2015, 08:57:58 am
content: There's a good discussion on the same question in a recent thread here:www.eevblog.com/forum/testgear/dpscope/. The tendency in that discussion is: If you can find the space at all, go for a proper benchtop scope; specifically the DS1054Z from Rigol is great value for money (and it is smaller than one might think). But also some recommendations on USB scopes in the thread.

author: zapta
author_rank: Super Contributor
timestamp: March 13, 2015, 11:11:30 am
content: For logic analyzer look for Saleae or one of their 8 channel clones on eBay.

author: Muxr
author_rank: Super Contributor
timestamp: March 13, 2015, 07:08:38 pm
content: A USB scope is not a substitute for a real scope. The biggest reason you want a scope is to see things that are hard to measure with other means. This is why both the UI and the specs are important. Real scopes win hands down in both. Also USB scopes depend on your computer speed as well, and they are pretty clunky and can crash etc... Not something you want out of an instrument you want to trust to give you the details of a problem you're looking at.You need that confidence that what you're seeing is real and you really only get that with a real dedicated scope imo.Entry level scopes are really not that expensive. $399 for a great Rigol DS1054Z.If you're really strapped for cash, you can get an Analog scope from Ebay.Logic Analysers, I agree with the previous poster. Saelee or one of the cheap clones.

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: March 13, 2015, 07:21:29 pm
content: A good logic/protocol analyzer and a scope have quite different use cases and depending on what you want to do with it, one is much more helpful than the other.If you're doing mostly digital stuff and want to investigate why a certain protocol is not working, a logic analyzer is so much more helpful than a scope - even if the scope has a protocol decode option.Then again, if you want to investigate the real physical signal regarding noise, slow edges and every other analog attribute, a scope is your only option.Besides a scope gives faster updates and is your number one choice to quickly check signals or measure a simple PWM even though this would be possible with a logic analyzer.In the end you need both.BTW: as usual, I vote for the Ikalogic ScanaPlus as Logic Analyzer. Just again, it was incredibly helpful to debug issues with a 10MHz SPI controlled display.
Tenma DVM   Uni-trend equivalent ? - Page 1
Forum section: electronics / testgear

author: picandmix
author_rank: Frequent Contributor
timestamp: March 13, 2015, 12:43:25 pm
content: Have got a Tenma 72-7740 dvm which I believe is made by Uni-Trend.Its front layout looks very similar to some Uni_trend models so suspect it is internally virtually identical to a specific Uni-Trend model.Does anyone know which model it is, so I could then better see how good or bad a meter the Tenma really is.Seems the forum shows that some Uni_Trend models are quiet good.

author: Monkeh
author_rank: Super Contributor
timestamp: March 13, 2015, 12:46:13 pm
content: It's aUT60series. I leave matching the exact model up to you.
military grade oven controlled crystal oscillator FTS-1000A - Page 1
Forum section: electronics / testgear

author: Cali-Sam
author_rank: Contributor
timestamp: March 13, 2015, 06:32:10 am
content: just picked up what seems to be a military grade ultra stable 5 MHZ oven controlled crystal oscillator FTS-1000A . similar to this (http://www.gigatest.net/datum/1000b-r2.pdf.my question is.. How do i power it up? what voltage do i give it?the connector is 9-pin d-subminiature connector. similar to the one used for RS-232 i guess. i don't know what pin is what. i really don't want to blow it up.

author: rf-loop
author_rank: Super Contributor
timestamp: March 13, 2015, 09:33:22 am
content: This may help or not. There may be different sub versions, so be careful. (Do some careful checks first that pin numbers match, do not blow up this treasure.)http://ko4bb.com/dokuwiki/doku.php?id=precision_timing:fts_2000a_connector_pin-outIf all looks match thenYou need power 24V and 26V.1 GND | 8 +26V (electronics)5 GND | 7 +24V (oven heating)
Rigol DP832 question - Page 1
Forum section: electronics / testgear

author: LektroiD
author_rank: Frequent Contributor
timestamp: March 13, 2015, 08:12:11 am
content: Is it possible to set this up in a bipolar configuration?example:+15V DC0V Ground-15V DCI can't find it in the manual, and it has not been mentioned on any of the YouTube videos I've watched, nor is it mentioned in the manual. This is vital to the circuits I'm building for my analogue modular synthesizer. Currently I'm using an analogue bench power supply (IsoTech IPS2302A), which has config switches on the front panel to allow this, but could do with the accuracy of a digital bench supply, provided this option is possible.

author: wiss
author_rank: Frequent Contributor
timestamp: March 13, 2015, 08:15:49 am
content: one banana cable between ch2- and ch1+, +15V at ch2+, -15V at ch1-, 0V at ch1+ and ch2-

author: LektroiD
author_rank: Frequent Contributor
timestamp: March 13, 2015, 08:58:23 am
content: In that configuration, do you have to set the voltages individually, or does one setting control both sides equally (like on my analogue supply)?If they are independently controlled, it seems a bit long drawn out for today's technology...

author: Howardlong
author_rank: Super Contributor
timestamp: March 13, 2015, 09:23:48 am
content: Quote from: LektroiD on March 13, 2015, 08:58:23 amYou simply press the Track Softkey, it links ch.1 and ch.2.However this only links the set voltage. The current limit, over voltage and over current protection is still dealt with on a channel by channel basis.Edit: You can also choose to have the linked channels to switch on and off together.
PACE MTS-200  - Page 1
Forum section: electronics / testgear

author: DavidDLC
author_rank: Frequent Contributor
timestamp: March 12, 2015, 01:47:16 am
content: Sh!t I feel stupid.Long time ago a co-worker sold me a PACE MTS-200 for $100.00 dlls.When he gave it to me I just took a look, but never tested it ( I trusted him ).I was on the hunt for a desolder gun station, and I was thinking to sell the PACE because I never use it. Today I took it out of the box to test it to sell it, and.... stupid David, this unit is well amazing !It came with three accessories:A regular solder iron with several tips, several for all kinds of workA tweezer style solder iron to remove SMD componentsand....what made my day a desolder iron as well !!!!The only downside is that you need to plug this Power Pack devices, I would like to have like a potentiomenter to set the temperature, but then I was thinking on this MetCal solder station that has nothing and still do the job.Man for $100.00 I got too much value.David.

author: Corporate666
author_rank: Unknown
timestamp: March 12, 2015, 03:45:02 am
content: I am a big fan of Pace. They don't seem to get talked about practically at all, but I've owned many many brands of solder stations (Metcal, Weller and lots of others I've forgotten) and my favorite by far is my Pace HW-100 I use daily.If you are still interested in selling your MTS-200, I'll buy it off you. Doesn't sound like you are selling, but if you are, let me know.

author: Skimask
author_rank: Super Contributor
timestamp: March 12, 2015, 04:31:51 am
content: PRC-2000...with all the accessories, just like I had back in the AFREP shop.Now then...where did I stash that extra few thousand dollars...

author: nanofrog
author_rank: Super Contributor
timestamp: March 12, 2015, 04:34:49 am
content: You got one hell of a deal.Perhaps some photos?

author: DavidDLC
author_rank: Frequent Contributor
timestamp: March 12, 2015, 08:50:38 pm
content: Picture as requested.

author: nanofrog
author_rank: Super Contributor
timestamp: March 13, 2015, 08:22:41 am
content: Quote from: DavidDLC on March 12, 2015, 08:50:38 pmThanks.It's all in very nice shape.
HP Davidson Power Supply Cleaning - Page 1
Forum section: electronics / testgear

author: james.d.brady1
author_rank: Newbie
timestamp: March 11, 2015, 05:52:46 pm
content: Hello everyone, I just purchased a HP Davidson Dual dc power supply Model 6025B, $25 on ebay!! It works like a charm, as confirmed on my cheap Craftsman multimeter, considering its age, but its pcb is covered with an inch of dust!! I can barely see the components inside! Well, i was looking for advise as to cleaning it up. I was gonna break it down and used compressed air to blow off what i can and use qtips and isopropyl alcohol to do the rest. Any advise appreciated..

author: sotos
author_rank: Frequent Contributor
timestamp: March 12, 2015, 07:11:08 pm
content: That’s fine if you do that.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 12, 2015, 08:08:00 pm
content: Compressed air from a can is fine because it's low volume, compressed air from a reversed vacuum-cleaner is fine because it's low pressure, but compressed air from a shop compressor is bad because it's likely to be high volume high pressure, and full of crap like condensation and oil.Myself I use my home Electrolux E-2000 reversed.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: March 12, 2015, 08:55:40 pm
content: Inevitably you'll be left with a film of tenacious dust and fuzz; you'll have to resort to solvents to attack that. I would guess, after removing the more sensitive or ponderous components (meters, transformers?), it would be okay to soak and agitate the board in soapy water, then rinse and blow off. Then wait extra long for it to dry, in case of water trapped under capacitors and such. It may need some light to moderate scrubbing; you'll have to judge how much is required.Speaking of caps, the electrolytics may need replacing anyway, always something to keep in mind.Tim

author: james.d.brady1
author_rank: Newbie
timestamp: March 12, 2015, 09:53:52 pm
content: Thanks everyone for the advice, I got it broken down now, it's cleaning up ok, the tinned board is really quite interesting. As for the electrolytics, they are all corroded and need to be replaced.. gotta get the numbers off em and try to find them.. thanks again everyone!

author: dom0
author_rank: Super Contributor
timestamp: March 12, 2015, 10:26:03 pm
content: Don't forget to do a full readjustment / calibration after cleaning the unit.The manual will likely have complete schematics, layout and parts list, which makes identifying rotten components easier.
Rigol DS3102B DSO - Page 1
Forum section: electronics / testgear

author: james.d.brady1
author_rank: Newbie
timestamp: March 14, 2015, 06:30:37 pm
content: Well, I was looking for a good enry level scope, was shopping for an anolog ver, bid on a few on ebay. Finally decided to get the $400 Rigol next month, but then.... looks like one of the few DSOs that I bid on I'm about to win.. So, any information on the DS 3102 b would be greatly appreciated.. Is it anygood? Did I waste my money? Tips on probes and etc...Thanks in advance.. always a wealth of knowledge here..

author: Fungus
author_rank: Super Contributor
timestamp: March 14, 2015, 07:07:36 pm
content: This one?http://www.ebay.com/itm/151613204093$140 seems OK but if you can afford a DS1040Z then I'd be hoping to lose the auction.
Flir Lepton extreme teardown - Page 1
Forum section: electronics / testgear

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 11, 2015, 09:42:01 pm
content: Youtube seems to have done something odd to the formatting...

author: synapsis
author_rank: Regular Contributor
timestamp: March 11, 2015, 10:52:18 pm
content: I know the back of Mike's thumbs better than my own.

author: chicken
author_rank: Frequent Contributor
timestamp: March 12, 2015, 01:10:07 am
content: Regarding missing marking on the IC die: I think you scraped it off with the first, brownish layer. There's partial text visible around the 11 minute mark.
Keysight (Agilent) BenchVue v2.5 released - Page 1
Forum section: electronics / testgear

author: HighVoltage
author_rank: Super Contributor
timestamp: December 16, 2014, 01:36:10 pm
content: The new updated BenchVue version 2.5 is available for download from the Keysight website.I just installed it and it looks really good and has some great added features.There is also a "pro version" available for the different modules and logging is no longer limited to 1 hourYou can download it here:http://www.keysight.com/main/software.jspx?cc=AL&lc=eng&ckey=2417463&nid=-32762.1080833&id=2417463

author: Dr. Frank
author_rank: Super Contributor
timestamp: December 16, 2014, 01:47:06 pm
content: Great!Thank you for that info, just updated.Will test it, but still no support for older instruments (non SCPI language), like 3458A, pity that.Frank

author: HighVoltage
author_rank: Super Contributor
timestamp: December 16, 2014, 01:57:01 pm
content: I agree.Although the list of supported instruments has grown, it is still lagging many.I was hoping to have my older Spectrum Analyzer in the list of supported gear, but it is not.Here is the release DataSheet from my German distributor attached, that has all supported instruments listed.

author: HighVoltage
author_rank: Super Contributor
timestamp: March 11, 2015, 11:52:25 pm
content: BenchVue 2.6 was released and I just implemented it it to a system for a client with a 3000-X scope and a 34461A DMM.For this application, BenchVue is running very stable and reliably.From the Keysight website:BenchVue 2.6 is here!Posted: Feb 19, 2015 3:14 PMClick to report abuse... Click to reply to this thread ReplyBenchVue 2.6 was released today, February 19, 2015. In addition to bug fixes, this release adds:• New Power Meter Pro App supports unrestricted data logging time, adds support for U204xXA sensors• New NA App supports E5080A Network Analyzer• Scope App adds support for 5000, 3000T and 90K scopes• PS App adds support for N6785A and N6786A• Includes fully localized language help files and relevant section of the user interface for all applications (French, German, Russian, Korean, Japanese, Simplified Chinese)• Improved issue with Comm Fabric and mManager not starting. Note: LAN adapters must be enabled, even if not connected to the Internet.• Added ability to show “Favorites” defined in Connection Expert.Please send new instrument requests to benchvue.feedback@keysight.comSend questions, comments and bug reports to benchvue.support@keysight.comDownload BenchVue 2.6 today athttp://www.keysight.com/find/benchvue
Vintage AVO H.I. 108 Multimeter - Page 1
Forum section: electronics / testgear

author: RussF
author_rank: Newbie
timestamp: March 10, 2015, 11:29:51 pm
content: Google is not being friendly to me - Anyone have any ideas where I might look for a circuit diagram or BOM?

author: tautech
author_rank: Super Contributor
timestamp: March 11, 2015, 06:39:59 am
content: Followed a trail of links to this:http://www.vintage-radio.net/forum/showthread.php?t=100436And near the end of that thread....hey presto:http://www.vintage-radio.net/forum/attachment.php?attachmentid=85411&d=1382717214Enjoy.

author: RussF
author_rank: Newbie
timestamp: March 11, 2015, 08:52:02 am
content: Outstanding, cant tell you how long I've been trying to find this. Thank you very much tautech.

author: tautech
author_rank: Super Contributor
timestamp: March 11, 2015, 07:19:12 pm
content: Quote from: RussF on March 11, 2015, 08:52:02 amThanks.Must be the practice I've had lately trying to find a manual for a real nice ex military 7x.
Stolen test equipment serial number checker? - Page 1
Forum section: electronics / testgear

author: pinkman
author_rank: Regular Contributor
timestamp: March 11, 2015, 02:14:10 am
content: Does anyone know if there is a resource where I could reliably find out whether a scope of a specific serial number is stolen or not? I know that places which do calibration have this ability, but I don't know who/what they use. I need to check a serial number and I need to check it fast. Any ideas? I tried a few "free" stolen goods databases online, and none had hits on the serial number, but I would really prefer to use whatever the calibration houses use as that's where I'm going to send the scope if I buy it, and if I send it for cal and end up never seeing it again due to seller being a criminal... I will be very depressed.

author: miguelvp
author_rank: Super Contributor
timestamp: March 11, 2015, 05:42:12 am
content: Assuming you are in the US, contact the police (non emergency call) I bet they can find out if an item is reported stolen or not.

author: Tom45
author_rank: Frequent Contributor
timestamp: March 11, 2015, 01:44:07 pm
content: Because test equipment isn't common for most people I'd think the best thing would be to contact the maker of the device you are interested in. They are probably the ones that send the list of stolen equipment to the calibration centers.

author: ebastler
author_rank: Super Contributor
timestamp: March 11, 2015, 02:21:51 pm
content: If you are concerned about the provenance of the instrument you are considering to buy, why not ask the seller for a proof of purchase or other proof of origin? I assume this is a relatively recent and high-end piece of kit, so he probably won't claim that he got it at a swap market or from the dumpster? ;-)If you are already nervous about the seller and he cannot provide documentation, I would not buy.
Scullcom #8 - Precision Voltage Reference Modules - youtube video - Page 1
Forum section: electronics / testgear

author: retiredcaps
author_rank: Super Contributor
timestamp: March 11, 2015, 07:26:50 am
content: I mentioned Scullcom's youtube channel before in another thread.https://www.eevblog.com/forum/testgear/scullcom-youtube-channel-reviewteardown-of-older-dmm/Here is his latest video comparing some precision voltage references. The one that is generating so much, ahem, discussion in another thread starts at 25:54. He does a teardown and schematic as well.As far as I know, Scullcom is not a member here?

author: mij59
author_rank: Frequent Contributor
timestamp: March 11, 2015, 08:32:20 am
content: Very revealing tear down of the black box.Is this a prototype or the "real" thing ?Wondering what the long term stability is .
Agilent 53131A - changing presets - Page 1
Forum section: electronics / testgear

author: Dragon88
author_rank: Regular Contributor
timestamp: March 15, 2015, 03:21:24 pm
content: Hi,I would like to change a preset on my Agilent 53131A (gate time of 2 s instead of the default 300ms). The manual is very thorough about listing all of the presets, and indicates they can be changed, but I didn't find in there how to actually do it.Does anyone know how to change presets on an Agilent 53131A? Preferably through the front panel because I do not have a way to use the GPIB interface.Thanks.
Synchronize keithley 2410 sweep with external ARB  - Page 1
Forum section: electronics / testgear

author: qwaarjet
author_rank: Regular Contributor
timestamp: March 10, 2015, 08:50:16 pm
content: I want want to trigger a sweep on a kiethely 2410 with a function generator/ NI DAQ. Is there a way to do hardware triggering for this?

author: McBryce
author_rank: Super Contributor
timestamp: March 10, 2015, 10:28:36 pm
content: Does your 2410 have the triggerlink socket on the back? It's an 8pin Mini-DIN between the RS232 and the power socket. If so, that has trigger input/output if you have or build yourself the right cable. All the info you need should be in the manual.McBryce.
FLIR C2 images - Page 1
Forum section: electronics / testgear

author: gmit77
author_rank: Regular Contributor
timestamp: March 10, 2015, 11:33:16 am
content: here we are going to post some images about FLIR C2 which is now available at stock, free shipping and discount code via PM

author: gmit77
author_rank: Regular Contributor
timestamp: March 10, 2015, 11:47:37 am
content: first shots

author: gmit77
author_rank: Regular Contributor
timestamp: March 10, 2015, 11:50:25 am
content: what is included

author: frenky
author_rank: Unknown
timestamp: March 10, 2015, 03:17:22 pm
content: Please show two images of laptop keyboard. One with MSX and one without.And take them quickly one after another so that temperature won't change much.I'm really interested in the amount of the detail this new sensor can deliver.Tnx.EDIT:Datasheet says 4800pixels; which is (80x60). Is this thing using the old lepton core?

author: gmit77
author_rank: Regular Contributor
timestamp: March 10, 2015, 03:22:03 pm
content: here we are:

author: gmit77
author_rank: Regular Contributor
timestamp: March 10, 2015, 04:32:30 pm
content: UNBOXING - SORRY ITALIAN LANGUAGE - COMING ENGLISH AND APPLICATION VIDEOhttps://www.youtube.com/watch?feature=player_detailpage&v=sAN4zy3thn4

author: ElektroQuark
author_rank: Unknown
timestamp: March 10, 2015, 04:36:15 pm
content: Price?

author: gmit77
author_rank: Regular Contributor
timestamp: March 10, 2015, 04:39:49 pm
content: Ciao EdoNork, list price is fixed at Euro 699 + VATWe offer a discount code which I send you via PM and free shipment to Europe.http://www.batterfly.com/shop/flir-c2

author: nctnico
author_rank: Super Contributor
timestamp: March 10, 2015, 11:11:31 pm
content: How long is that discount code valid?

author: gmit77
author_rank: Regular Contributor
timestamp: March 11, 2015, 08:13:26 am
content: hi nctnico, we haven't set any due date yetdiscount code sent to PM
MS3401A network analyzer - Page 1
Forum section: electronics / testgear

author: R_G_B_
author_rank: Frequent Contributor
timestamp: March 10, 2015, 08:01:09 pm
content: Does anyone have an operations manual for the MS3401A network analyzer or has anyone got one who has one of these help guide me through the functionality. There don't seem to be any manuals online or on anritsu website.ThanksR_G_B
V/I Signature Analyzer - Page 1
Forum section: electronics / testgear

author: spectro65
author_rank: Newbie
timestamp: March 09, 2015, 12:08:01 am
content: HelloI am looking for a mfr / model of a V/I Signature Analyzer, either new or used for a small repair facility. Suggestions welcomeThanks

author: ConKbot
author_rank: Super Contributor
timestamp: March 09, 2015, 07:50:40 am
content: A bit vague on the requirements, or what exactly youre trying to do? Looking for something like a curve tracer or SMU to characterize a component/device? What sort of voltage/currents are you trying to produce/measure?

author: spectro65
author_rank: Newbie
timestamp: March 10, 2015, 01:03:22 am
content: I want to troubleshoot PCB's used in lab equipment, I do not have circuit diagrams. Using a working one, it can be compared to the broken one - using nodes and find defective components, also know a In Circuit Testers, Teradyne and Huntron make themAs stated if is for my small repair facilityThanks
Crystal Oscillator Frequency Counter ROM - Page 1
Forum section: electronics / testgear

author: mentaldemise
author_rank: Regular Contributor
timestamp: March 09, 2015, 10:10:52 pm
content: Does anyone have one of these that they could give me the ROM from? It appears the PIC I received doesn't have anything flashed to it.The item is one of these:http://www.ebay.com/itm/1Hz-50MHz-Digital-LED-Crystal-Oscillator-Frequency-Counter-Tester-Meter-Kits/400832061253

author: 22swg
author_rank: Frequent Contributor
timestamp: March 09, 2015, 10:52:38 pm
content: It's the hex file you need , do you know the PIC is it 16F628 ?https://www.eevblog.com/forum/projects/crystal-oscillator-frequency-counter-tester/msg624411/#msg624411

author: mentaldemise
author_rank: Regular Contributor
timestamp: March 09, 2015, 10:54:47 pm
content: PIC 16F628A, don't know if the A is significant lol

author: mentaldemise
author_rank: Regular Contributor
timestamp: March 09, 2015, 11:20:58 pm
content: Quote from: 22swg on March 09, 2015, 10:52:38 pmYou rock! Turns out that Counter2.hex was the one it needed. I can get at least basic functionality! Thanks!!!!

author: 22swg
author_rank: Frequent Contributor
timestamp: March 09, 2015, 11:33:51 pm
content: Hope Paulie sees this.....
Another Scope question! - Page 1
Forum section: electronics / testgear

author: Bouke285
author_rank: Newbie
timestamp: March 09, 2015, 11:04:20 pm
content: Hey everybody. I am very new to electronic work, and I know this question has been asked over and over. I have used the search and the information seems to be a bit out of date. I am looking for a budget oscilloscope for general electronic repair. I am willing to pay around $500-700. I've looked into the Rigol DS1102E, and the Owon SDS7102 (which seems to have some bad rep). So today in 2015, what is the number one choice for an intro hobbyist for repair work in my price range? Thank you!

author: JackP
author_rank: Regular Contributor
timestamp: March 09, 2015, 11:15:38 pm
content: I'm sorry to say it but look around and you'll only get one real answer - the Rigol DS1054Z. I don't really know about it (using my 20MHz CRO) but some one will tell you. Also look at Daves reviews

author: Unknown
author_rank: Unknown
timestamp: March 09, 2015, 11:16:52 pm
content: Rigol. The only reasonable choice in that price range - just buy one.But NOT the 1102E. That's one of their older models. Get the 105xZ. It is VASTLY better and almost the same price.Or spring for the DS2072 and upgrade it to 300 MHz via the hack (see other threads...). But you probably don't need that.

author: Fsck
author_rank: Super Contributor
timestamp: March 09, 2015, 11:17:25 pm
content: Quote from: JackP on March 09, 2015, 11:15:38 pm^ as predicted. Can't beat the 1054z in it's price range.
Hameg HM203-6  Adjusting plan needed  - Page 1
Forum section: electronics / testgear

author: Piotr07
author_rank: Newbie
timestamp: March 09, 2015, 01:56:42 pm
content: Hello AllI need to calibrate the HM203-6 after repair but I can not found any Calibration data for this model .Can you help me if you have some adjusting description from the manufacturer ?RegardsPiotr

author: grumpydoc
author_rank: Super Contributor
timestamp: March 09, 2015, 03:56:52 pm
content: Most manuals are on the website or available on the web. Circuit diagrams for some of the 'scopes are only in the German version.

author: oldway
author_rank: Super Contributor
timestamp: March 09, 2015, 04:12:19 pm
content: See if the HM203-5 manual ( German version) can be used instead....manual of the HM203-6 (German version) has no diagram, nor instruction of calibration.http://www.hameg.com/manuals.0.html?&no_cache=1&L=0
How can I measure true power on a hydro based on a washing machine motor - Page 1
Forum section: electronics / testgear

author: DAIRVINE
author_rank: Contributor
timestamp: March 08, 2015, 09:39:31 am
content: Designing a hydro based on a 230V PM washing machine motor as a generator and using a pelton turbine. I have not characterised the motor as a generator but am expecting the frequency and voltage to be on the high side, maybe 400V three phase at 200Hz on load and twice this off load. I am intending to use variacs to transform the voltage to use COTS battery charger. Power factor correction will improve efficiency.How can I measure power factor and/or true power? VA is easy with a multimeter, but watts, power factor are not so easy.A scope, but voltage is a bit inconvenient, and my scope is a heavy bench model, when battery power would be needed.Various Chinese wattmeters are available but not at the right frequency or voltage. Perhaps one of these would work?I can't justify spending a lot on an expensive meter that probably won't be needed again.

author: JohnnyBerg
author_rank: Frequent Contributor
timestamp: March 08, 2015, 09:48:31 am
content: Wow ..Power is not U * I, but U * I * Cos phi

author: The Electrician
author_rank: Frequent Contributor
timestamp: March 08, 2015, 10:05:48 am
content: This should do the job:http://www.ebay.com/itm/Yokogawa-2042-Portable-Polyphase-Wattmeter-TESTED-30-Day-WARRANTY-/301444218897?pt=LH_DefaultDomain_0&hash=item462f79c011You can use it for short periods at 400 volts, and it's good up to 1000 Hz, I think.

author: HighVoltage
author_rank: Super Contributor
timestamp: March 08, 2015, 10:10:11 am
content: Take a look at the HAMEG Powermeter HM8115-2It is good for up to 8 kW Powerhttp://www.hameg.com/0.147.0.html

author: DAIRVINE
author_rank: Contributor
timestamp: March 09, 2015, 09:05:18 am
content: good advice, thanks guys/galsI think I have sorted this. What you do is put a resistor in the line to measure current and a divider to measure voltage. Adjust divider so voltage measurement is about the same as the current measurement (both in volts.)Measure Volts V, current C and measure the sum of both S.Then use trigonometry to derive the phase angle.Seehttp://scipp.ucsc.edu/~haber/ph5B/addsine.pdfYou have to use an averaging multimeter for the voltage measurements for best results because RMS measurements to not add in a simple way.
Any recent Rigol 2072A buyers? - Page 1
Forum section: electronics / testgear

author: Wmacky
author_rank: Regular Contributor
timestamp: March 09, 2015, 01:03:42 pm
content: Looking for a favor.Has anyone purchased a 2072A in the last couple of weeks, and if so could you tell me the board revision number indicated on boot up?

author: miguelvp
author_rank: Super Contributor
timestamp: March 09, 2015, 01:28:28 pm
content: Even if there is a revision change, I will doubt they would have change the hardware around the PLL.For all intents and purposes the jitter problem is non-event and it's fixed.But Bud will disagree

author: Wmacky
author_rank: Regular Contributor
timestamp: March 09, 2015, 02:16:22 pm
content: Quote from: miguelvp on March 09, 2015, 01:28:28 pmYeah, they may not change the loop components, but I figured after the next revision, there would be no reason to wait any longer (Even if it wasn't addressed)
Amprobe AM-270 v/s Instek GDM-416 or UNI-T ** ? - Page 1
Forum section: electronics / testgear

author: pfm
author_rank: Regular Contributor
timestamp: March 08, 2015, 01:22:24 am
content: Looking for a DMM with at least these features - AC ampere(10A+) and Peak Hold. Would be "nice to have" TrueRMS, Diode and Frequency test.I am considering Amprobe AM-270, Instek GDM-461, both ~$100. Any UNI-T models I could consider ? UT-61 or higher maybe ? Extech/Mastech ?Please advise.Thanks.

author: Lightages
author_rank: Unknown
timestamp: March 08, 2015, 01:30:08 am
content: The Instek GDM-461 IS a UT61E, just relabeled and priced much higher. The AM270 is a much better meter and actually has real input protection unlike the UT61E/Instek GDM-461.The AM270 is a good buy except for the miserable back light. If you can swing $135, then get the Brymen BM257s from iloveelectronics on the forums here. His ebay store has this meter for $135 shipped and I have yet to hear anyone say anything bad about the meter. The AM270 is built by Brymen BTW.http://www.ebay.com/itm/Brymen-BM257s-Digital-Multimeter-6000-count-Brand-New-Fluke-alternative-/200922627340It is out of stock right now but I am sure he will get more soon. IMHO, it is the best buy in a multimeter under $150.

author: pfm
author_rank: Regular Contributor
timestamp: March 09, 2015, 12:30:39 am
content: Thanks for your reply.One thing that I noticed was that the response time for Peak Hold is much faster on the Amprobe than the Brymen. Amprobe is 0.8ms whereas the Brymen is 5ms.Anyone know what the response time for peak hold is for the Instek/UNI-T ?
HANTEK MSO7084BLG "free" upgrade is possible? AKA HACK - Page 1
Forum section: electronics / testgear

author: colosseum01
author_rank: Newbie
timestamp: March 08, 2015, 08:42:37 pm
content: Hello Guys ,Just new in this forum and im planning to buy a MSO. Im looking for the best way. The Rigol is a but expensive for me , but i realy need the logic analiyzer function, what i looked is the , Hantek MSO7084BLG is there any1 who succesfully upgraded this product? Example to a MSO7304BLG?The other was a Rigol MSO2072A but this is 1600$ around and i have only 1000$ plus minus 100.So please share with me your experiences.Regards

author: colosseum01
author_rank: Newbie
timestamp: March 08, 2015, 09:08:41 pm
content: Or maybe any experience with MSO1000Z Series Unlock?
Picosecond Pulser Board Kit Availability  - Page 1
Forum section: electronics / testgear

author: Btipf
author_rank: Newbie
timestamp: March 08, 2015, 06:19:36 am
content: Hi. I've been reading posts expressing interest in the MK-I and MK-II "Picosecond Pulser" products based upon Jim Wilson's design. I too would like to purchase a board - or even better a kit - for one of these products. Are they available, and if so - how can I get one? Thanks!

author: Shock
author_rank: Super Contributor
timestamp: March 08, 2015, 12:08:13 pm
content: https://www.eevblog.com/forum/blog/eevblog-306-jim-williams-pulse-generator/570/