hybridfree/eevblog-posts huggingface dataset:
SAT Infrared launching Android-based, tablet-style thermal camera - Page 1
Forum section: electronics / testgear

author: ixfd64
author_rank: Frequent Contributor
timestamp: October 04, 2014, 10:16:37 pm
content: http://www.satir-uk.com/catalogue-product/pk-160Interesting...This was apparently announces back in April, but it looks like it's pretty much gone unnoticed. It seems as if 2014 is the year of thermal imaging...

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 04, 2014, 10:48:17 pm
content: http://toolboom.com/en/Tablet-Thermal-Camera-Satir-PK-160-on-Android.php$2000Video says "high frame rate" but no obvious spec for this.QuoteHas anyone else ever heard of them....?

author: ixfd64
author_rank: Frequent Contributor
timestamp: October 04, 2014, 11:37:04 pm
content: I think SAT is an OEM that manufactures cameras for other companies. This probably explains why several brands of cameras from different companies are nearly identical:ThePTI seriesfrom Process SensorsThePredator seriesfrom General ToolsTheIC080 seriesfrom TrotecHereis a review of the Trotec camera; I'd imagine the other ones would be very similar.

author: marshallh
author_rank: Unknown
timestamp: October 04, 2014, 11:50:48 pm
content: >$2000>160x120Nope

author: Stonent
author_rank: Super Contributor
timestamp: October 05, 2014, 07:09:46 am
content: Again the resolution looks too high in the youtube video.

author: miguelvp
author_rank: Super Contributor
timestamp: October 05, 2014, 08:34:47 pm
content: That particular american engineer sure gets around and can do everything
FuelCon TrueData-Load - Page 1
Forum section: electronics / testgear

author: craftycoder
author_rank: Contributor
timestamp: October 02, 2014, 02:50:18 pm
content: I picked up a FuelCon TrueData-Load on eBay and am looking for any information someone may have about it. A user manual would be awesome. As would a service manual. There is a serial port which I am hoping to be able to serial into (waiting on null modem cable) and gain access to current and power limits. I'd prefer to just feed it some analog signals though. Anyone know how it works?I did get it apart. No easy task as its case is riveted and it like a puzzle to remove everything in the right order. Anyone know where I can find these WAGO terminals so I can patch in?http://www.fuelcon.com/cms/uploads/tx_sbdownloader/BZM088_00.pdf

author: craftycoder
author_rank: Contributor
timestamp: October 05, 2014, 06:16:53 pm
content: The LOAD responds to malformed SCPI commands (:ERROR) but does nothing in response to generic SCPI commands. Anyone with some basic knowledge of SCPI and how I might get the device to report back something useful? So far no * (*RST) commands or interrogatory commands (INPUT:STAT?) work and all return ":ERROR".
Tektronix TPS Portable Scopes - Page 1
Forum section: electronics / testgear

author: nickm
author_rank: Regular Contributor
timestamp: August 08, 2014, 02:52:25 am
content: I haven't seen someone take apart the Tektronix isolated scopes so I thought I would take apart mine. The TPS series' inputs are completely floating so each channel is basically a differential amplifier. These are great for measuring primary and secondary waveforms at the same time. They are also battery powered so they're portable and you don't have to worry about being connected to mains.BNC shells are covered with a black plastic. My guess is they need to cover any exposed metal to achieve safety ratings.Back cover removed.Each channel has isolation slots with plastic barriers between them. This side seems to be all the signal acquisition. Looks like it converts it to digital and then sends it over the isolation barrier to the main uC.Front side of PCB.Each channel has its own power supply which has completely isolated outputs. Looks like a multioutput flyback due to simplicity and to conserve space.

author: Mark_O
author_rank: Frequent Contributor
timestamp: August 08, 2014, 08:15:18 am
content: Thanks, Nick. I've never seen the insides of one of those before.

author: marshallh
author_rank: Unknown
timestamp: August 08, 2014, 06:02:51 pm
content: Do you have a link to higher res images. Looks very similar to the THS series scope frontends. An optocoupler is used for DC-1mhz and the rf transformer carrys the AC component.

author: m121212
author_rank: Newbie
timestamp: October 09, 2014, 07:23:11 pm
content: I used this scope recently. The ability to take floating differential measurements was quite useful because I was working on a high-side driver with high common-mode biases.What I didn't like about it was the speed. This sort of Tek scope has a "save all" feature which saves the four channels (frustratingly in separate CSV files) and also a useful jpg screenshot. But when you use it on this scope, you have to twiddle your thumbs for 45 seconds while it writes to a CF Card (do they even make those any more??)I really want a scope like this, but with much more responsive/faster user interface, and faster data storage, on a USB stick.Unfortunately the newer scopes seem to run Windows, or have added bells and whistles that I don't want, like logic analysis, speak/interpret digital data bus signals, touch screen, etc.
rigol dm3058e is it possible to upgrade - Page 1
Forum section: electronics / testgear

author: radiogeek97
author_rank: Regular Contributor
timestamp: October 13, 2014, 12:36:09 pm
content: Just curious if there are any upgrades for the DM3058e possible via software. I know some of the meters in this series are 6.5 digit and have some other features. I know the Lan option is a no go because the E model has no physical lan connector. i searched the forum and could not find anything.thanks in advance.
Does the DS4000 series have 2 ADC's, so all 4 channels on = 2G ? - Page 1
Forum section: electronics / testgear

author: alank2
author_rank: Super Contributor
timestamp: October 04, 2014, 05:41:19 pm
content: Is it channel 1/2 share an ADC so 4GSa if one is on, 2GSa if both, and 3/4 share another ADC? So all 4 channels on = 2GSa on all channels? CH1 and CH3 both on by themselves equals 4GSa on eac one?Thanks,Alan

author: iDevice
author_rank: Regular Contributor
timestamp: October 04, 2014, 06:27:47 pm
content: Yes.

author: cosmos
author_rank: Regular Contributor
timestamp: October 04, 2014, 07:51:07 pm
content: Each if the two ADC chips contains two 2Gsps ADCs.When using only one of the two channels connected to the ADC chip the input mux is set so that both ADCs sees the same signal, but the second is sampling delayed so it splits the clock cycle in two.Some kind of vernier delay element in the clock path is indicated in the MXT2001 datasheet, MXT2001 was mentioned at one time to be a candidate or related, the pinning seems to fit this device at least.
Fluke 287 beep too low - Page 1
Forum section: electronics / testgear

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 02, 2014, 10:12:49 pm
content: Hi guys,I have a Fluke 287, since I receive it I noticed the beep sound is too low, first I didn't care much abou it.Then I saw a topic here, where the super cap on this type of meters got corrosion, I opened up mine and it has signs of corrosion.I have plans to buy the replacement cap, and I also want to look into the beep sound too low.Does anybody here has or had the same experience with the beep sound too low ?David.
Gear Haul - Page 1
Forum section: electronics / testgear

author: SoundTech-LG
author_rank: Frequent Contributor
timestamp: October 02, 2014, 05:20:08 am
content: ...

author: daqq
author_rank: Super Contributor
timestamp: October 02, 2014, 10:28:34 am
content: Great haul! Where is this Recycle bin you mentioned?

author: MarkPalmer
author_rank: Regular Contributor
timestamp: October 02, 2014, 06:02:23 pm
content: Quote from: SoundTech-LG on October 02, 2014, 02:43:09 pmI see where work is from the asset tags. Actually good to know companies like this take testing their products/designs seriously-Mark-

author: MarkPalmer
author_rank: Regular Contributor
timestamp: October 02, 2014, 06:09:55 pm
content: Quote from: SoundTech-LG on October 02, 2014, 02:48:54 pmI have never seen the insides of anything from Bruel and Kjaer, and to be honest I expected to see better, or at least on par with HP or the like. The wiring and boards of the 1023 look sort of of sloppy and disorganized.-Mark-

author: Vgkid
author_rank: Super Contributor
timestamp: October 02, 2014, 07:20:21 pm
content: That is a great score.

author: MarkPalmer
author_rank: Regular Contributor
timestamp: October 02, 2014, 07:40:29 pm
content: That is one thing I dearly miss about not working as a contractor at the GE locomotive plant in Erie, PA anymore.. trips to the building 44 salvage yard to pick up any old test equipment they were scrapping. Free was always the best-Mark-
Rigol MSO2000A-S with signal gen hacking - Page 1
Forum section: electronics / testgear

author: depeje
author_rank: Contributor
timestamp: September 12, 2014, 11:10:15 am
content: Hi,Does anyone know whether the MSO2000A-S scopes with signal generator can also be hacked like described inthistopic? Does this hack also enable the function gen in an MSO2000A which doesn't come with the generator? Is the hardware any different between the MSO2000A and the MSO2000A-S?

author: depeje
author_rank: Contributor
timestamp: September 23, 2014, 08:55:10 pm
content: To reply my own question: yes, this also works for the MSO2072A-S. Although the 300MHz key doesn't upgrade the bandwidth. The 200MHz key does everything it promises.The rigup tool provides me with 4 keys: NSEH, NSER, NSEQ and NSFH.Thisdocument says the rigup tool should output these four keys: NSEH, NSER, NSEQ and NS8H. Is there a way to get the NS8H key?

author: depeje
author_rank: Contributor
timestamp: October 02, 2014, 11:31:15 am
content: Ok, I found what I did wrong: I used rigup 0.1 instead of 0.4. With the 300MHz key from the rigup 0.4 tool I have an MSO2302A-S now.
Princeton Applied Research - Page 1
Forum section: electronics / testgear

author: SoundTech-LG
author_rank: Frequent Contributor
timestamp: October 02, 2014, 06:06:10 am
content: Anyone know anything about this line of gear? It was a group of physicists at Princeton that needed electronic test equipment so they started the company, early to mid 60's, and then sold to others. I have a model 110 Oscillator/Notch Filter/Selective amplifier/Distortion Analyzer but cannot find out anything on the net except ebay has a manual (which I already have).It was designed in 1966, and sold up to around 1978-80. Any info, like pricing would be wonderful.Thanks!
Anyone know where to get a Sorensen SFA Service Manual  - Page 1
Forum section: electronics / testgear

author: qwaarjet
author_rank: Regular Contributor
timestamp: October 01, 2014, 09:54:04 pm
content: I'm looking for the service manual for a Sorensen SFA or (SGA since they are vaguely similar). I haven't found anything on google yet or in the service manual thread here. Anyone know where to get one free or otherwise.
Seek Thermal camera - Page 1
Forum section: electronics / testgear

author: janoc
author_rank: Super Contributor
timestamp: September 30, 2014, 08:59:02 am
content: Hello,Did anyone get some hands-on time with this thermal camera?http://www.thermal.com/(beware, atrocious, PowerPoint-like "website" - seriously, what's wrong with people designing this sort of crap).It is a cell-phone accessory (similar to Flir One), costs about $200.

author: sacherjj
author_rank: Frequent Contributor
timestamp: September 30, 2014, 11:16:27 am
content: I have order number in the 600s. Not sure when they will ship though.Fairly big thread about it:https://www.eevblog.com/forum/testgear/yet-another-cheap-thermal-imager-incoming

author: janoc
author_rank: Super Contributor
timestamp: October 01, 2014, 12:17:57 pm
content: Doh, I am a doofus. I have missed that other thread. Thanks!

author: firehopper
author_rank: Frequent Contributor
timestamp: October 01, 2014, 06:51:20 pm
content: Quote from: sacherjj on September 30, 2014, 11:16:27 amaccording to a tweet I recieved from seek, they will ship when the app is in the app stores.. supposed to occur sometime this week..
Which oscilloscope ? - Page 1
Forum section: electronics / testgear

author: Josh2205
author_rank: Newbie
timestamp: October 02, 2014, 04:44:34 pm
content: Hey,I'm looking to buy a new dso and are looking to pay around the £230~ Mark for an entry level model.I'm looking for a simple to use ui and at least 70mhz but preferably 100mhzAnd a sample rate of 1ghz Or 500 MHz depending on price.Good Customer support and user base would also be a +I've looked at brands such as rigol siglent Owon and hantekSiglent SDS1102CNLhantek DSO5102PWildcard - rigol DS1052EThanks in advance for your help !I have searched the forum but couldn't find the answer to my question

author: Fungus
author_rank: Super Contributor
timestamp: October 02, 2014, 05:28:41 pm
content: Rigol DS1054ZQuoteReally?

author: Josh2205
author_rank: Newbie
timestamp: October 02, 2014, 05:39:51 pm
content: Thanks would you recommend brands like Hantek or Owon ? Or is it best to stay clear and sacrifice bandwidth for build quality / software / support ?And stick with the rigol ?

author: frenky
author_rank: Unknown
timestamp: October 02, 2014, 08:29:58 pm
content: Just search the forum for "DS1054Z" and you should get enough info for correct decision.(Hint: you can get 1300€ scope for 350€...)

author: Fungus
author_rank: Super Contributor
timestamp: October 03, 2014, 08:09:46 am
content: Quote from: Josh2205 on October 02, 2014, 05:39:51 pmThe very first post in the thread just two lines down from this one (at the time of writing) starts:"This new 50MHz version of the 4-channel DS1000Z series scopes is being discussed in several threads, particularly this one. However, the price/performance is so outstanding that it surely deserves its own.A 4 channel, 12 Mpts memory, 30 000 waveforms/second, intensity graded scope of this quality for around 399 USD/299 EUR/235 GBP (plus tax) is nothing short of astounding"....Quote from: Josh2205 on October 02, 2014, 05:39:51 pmAnybody advertising more "bandwidth!!!!!" for £230 is selling something you'll regret buying. Sample rate is not bandwidth.

author: David Hess
author_rank: Super Contributor
timestamp: October 03, 2014, 01:14:49 pm
content: Quote from: Fungus on October 03, 2014, 08:09:46 amIt sure is not.Enough real time sample rate is needed to support the highest frequencysingle shotmeasurement you expect to make. Enough equivalent time sample rate is needed to support the vertical bandwidth. Few oscilloscopes these days support equivalent time sampling so in practice, the real time sample rate needs to support the vertical bandwidth under all conditions and offhand, I do not know of any currently produced DSOs worth considering which do not meet this requirement except in unusual applications.
RF Digital Multimeter Proyect - Page 1
Forum section: electronics / testgear

author: unicornio
author_rank: Contributor
timestamp: October 01, 2014, 12:51:03 pm
content: Hi, guys!I'm involved with this project: a handheld RF DMM.I think that leaning on the AE20401 of Ascen, i can get a handheld unit to make fairly accurate checks in a comfortable, efficient way, and above all, very affordable!I'm finalizing the installation of 2200 mAh LiPo battery (3S) and checking what autonomy it will have, to prevent that the device has to be plugged.I think it can be very useful for measuring power, frequencies (1ppm TCXO), return loss (SWR) and a few more things, all in the place you need to have to measure ...I will post in this thread the progress and a better characterization of this cheap but effective tool ... suggestions are welcome, empathy and synergy is sought ...regards!
TDS 220 - Page 1
Forum section: electronics / testgear

author: kamtar
author_rank: Regular Contributor
timestamp: October 01, 2014, 07:28:57 am
content: Hi,Im buying oscilloscope for hobby use and for debuging digital stuff, so i would like at least 100mhz bandwith. Should i buy used tektronix TDS 220 for 370 USD or rather new siglent?Thanks

author: nctnico
author_rank: Super Contributor
timestamp: October 01, 2014, 07:54:09 am
content: Get the new Siglent.The Tektronix TDS200 series are utter crap.

author: kamtar
author_rank: Regular Contributor
timestamp: October 01, 2014, 02:46:48 pm
content: Can you tell me why?

author: Lunasix
author_rank: Regular Contributor
timestamp: October 01, 2014, 03:18:43 pm
content: I don't know where you are, but 370USD is a far too high price.

author: godFather89
author_rank: Contributor
timestamp: October 01, 2014, 04:22:18 pm
content: If it's for hobby use, I think the new DS1054Z worths the extra $30.

author: Hydrawerk
author_rank: Super Contributor
timestamp: October 01, 2014, 06:42:28 pm
content: Quote from: kamtar on October 01, 2014, 02:46:48 pmTDS220 is a very basic scope withnoadvanced features like FFT, color screen, deep memory, pushable knobs, intensity gradation, no Single button, no USB connection. It was a good basic scope back in 1997 or so.
M830B voltage differs with polarity - Page 1
Forum section: electronics / testgear

author: hapless
author_rank: Regular Contributor
timestamp: September 30, 2014, 03:03:37 pm
content: I've been searching/researching and scratching my head for a while, but couldn't come up with an answer to this.I got an M-830B as part of a tool set. The meter looks exactly as on P. Vis's pageinside, the only difference being that mine is black. I've looked at schematics floating around the 'net and they don't seem to match the PCB.The problem that I've encountered is that the meter should (and I know that these meters can) show the same voltage regardless of polarity. However, the one I have is a few counts off when polarity is reversed. E.g., it would display 5.00V, and then reversing the probes would show -4.98V. Not a big deal for such a cheap meter, of course, but I'm sure there's a way to balance this out. Any suggestions would be welcome, and also, maybe a place to find the correct schematic.

author: Vgkid
author_rank: Super Contributor
timestamp: September 30, 2014, 04:32:02 pm
content: On a bench(The only ones that really go into detail describing this) meter it would be due to a asymetrical difference in the analog to digital converter. It is present on my meters.

author: hapless
author_rank: Regular Contributor
timestamp: September 30, 2014, 05:06:37 pm
content: Thanks for the reply. Hmm... If that's the case, I'm out of luck.I kind of hoped it would be something like the fault of a ceramic cap in auto-zeroing circuit having too much V loss or something like that.

author: MK
author_rank: Regular Contributor
timestamp: September 30, 2014, 08:43:16 pm
content: If it is only 2 Least significant digits, then you just have to live with it or become a volt nut who aspires to an HP 3578A eventually...

author: Vgkid
author_rank: Super Contributor
timestamp: October 01, 2014, 12:29:38 am
content: With only 2lsd, not much to worry about. My 87-1 agrees to the same digit in 3.5 digit mode...

author: hapless
author_rank: Regular Contributor
timestamp: October 01, 2014, 12:45:17 am
content: Interestingly, without the tiny shield on the cover connected, it can be as much as 5 lsd. As you probably can tell, I'm not too worried about it as it's not the best meter that I have. It's just something that would be nice to be able to correct. The issue came up when I started adjusting the only pot on the PCB against a precision voltage reference. I guess adjusting for the positive polarity is the best I can do then. Or would it be better to adjust for the negative just in case most of my future measurements will be done with probes reversed, as per Murphy's Law they usually are?Current measurement is also affected by the adjustment, but it would be way off in either case. The shunt resistance just has to be figured into the measurement results.
Keithley 2010 firmware, bad checksum? - Page 1
Forum section: electronics / testgear

author: picburner
author_rank: Frequent Contributor
timestamp: September 30, 2014, 07:07:58 pm
content: Hi everyone,I have a Keithley 2010 in repair that seems working but running the diagnostic tests failsthe 100.1 and the 100.2 sporadically also.Performing the gpib test '*TST?' , which should verify the checksum of the rom,I get the result '1' who correspond to test failed.Question: has anyone the firmware backup of the Keithley 2010 or can verify whether hisinstrument give '0' like result of this test?My firmware is 'A09'.Thanks for any response.Giampiero
SCPI and Keithley 2110 - Page 1
Forum section: electronics / testgear

author: trevwhite
author_rank: Frequent Contributor
timestamp: September 29, 2014, 03:25:15 pm
content: HiI want to execute some SCPI cmd sequences on my 2110 DMM. The KLink software provided seems to enable me to execute one command at a time but not a sequence of commands. Is there better software out there to enable me to run sequences of commands?ThanksTrev

author: alex.forencich
author_rank: Frequent Contributor
timestamp: September 29, 2014, 08:58:22 pm
content: There are several options. What platform are you on - winows/linux/mac? What interface are you using - USB or GPIB via some sort of adapter? If you're on Windows, you can buy the exorbitantly expensive and cumbersome labview software. You could use the also exorbitantly expensive and cumbersome matlab. These are not the only options, though. There are free programs available that should be able to communicate over whatever interface you are using. If you are using the USB port directly, then you need something that can speak USBTMC. It is possible to install the NI VISA software in windows and linux and then communicate with that from C directly or from Python with pyvisa. Another option is the pure python python-usbtmc driver, which should run on anything that libusb runs on (tested on windows, mac, linux, and the raspberry pi). If you have a GPIB interface of some sort (either USB or PCI), then you're probably going to have to install the NI VISA software and then use C or Python via pyvisa.In terms of environments, I would personally recommen Python as it is rather easy to learn and because it is interactive - you can start up the Python interpreter, import the instrument drivers, connect to the instrument, and send it commands without having to write up a whole program and compile it. If you have ever used Matlab before, it's more or less the same idea, except Python is an actual programming language that's not horribly unpleasent to work with.

author: trevwhite
author_rank: Frequent Contributor
timestamp: September 30, 2014, 03:28:16 pm
content: I originally though PyVISA was going to be a hassle but the examples are great and it does look perfect for my simple requirements.Big thanksTrev
Selfmade Tektronix 1241 LA probe pod - Page 1
Forum section: electronics / testgear

author: davorin
author_rank: Unknown
timestamp: September 24, 2014, 04:08:44 pm
content: I see that many people sell their Tektronix 1241 logic analyzer without any pods...though they claim they just used the device before at home (o;What do the pods actually contain? Any active logic inside or is it just pure cables and connectors?

author: edavid
author_rank: Super Contributor
timestamp: September 24, 2014, 04:47:52 pm
content: Logic... comparators with differential ECL outputs.http://www.davmar.org/pdf/TekP6460.pdf

author: davorin
author_rank: Unknown
timestamp: September 24, 2014, 05:04:18 pm
content: Ah great..thanks...Seems Mouser has some TTL2ECL converter chips on stock....http://www.micrel.com/_PDF/HBW/sy100s324.pdf

author: edavid
author_rank: Super Contributor
timestamp: September 24, 2014, 05:08:31 pm
content: Quote from: davorin on September 24, 2014, 05:04:18 pmWouldn't it be cheaper to buy a whole logic analyzer with probes than to build probes out of those chips?

author: davorin
author_rank: Unknown
timestamp: September 24, 2014, 05:15:05 pm
content: Would be maybe in the US (o;So far haven't found any here in middle Europe....Well at least Mouser ships free of charge from the US...and Farnell as well ;-)

author: davorin
author_rank: Unknown
timestamp: September 24, 2014, 06:30:19 pm
content: Well...I have the options now of a Philips PM3585 without recognized GPIB interface but with all pods....or a 1241 without pods but with GPIB interface (o;Which way to go....hmmm...

author: davorin
author_rank: Unknown
timestamp: September 30, 2014, 12:27:35 pm
content: Found this now on ebay:http://www.ebay.com/itm/141374288480?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIThttp://www.ebay.com/itm/380997934391?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AITThough the lead set seems to be overprized for my taste...What else would be needed?Haven't found a complete set so far including the test clips...
Picked up some "new" equipment today...... - Page 1
Forum section: electronics / testgear

author: xwarp
author_rank: Frequent Contributor
timestamp: September 29, 2014, 12:10:54 am
content: a Tek TDS460 scope with front cover.a Tek Type 422 scope. A/C only, with front cover and is a very early s/n.an Industrial Instruments L-7 megohmeterAll for a whopping 75 bucks!The TDS460 has the typical acquisition failure and will definitely need a cap job based on what I am seeing for the surface mount caps now.

author: Vgkid
author_rank: Super Contributor
timestamp: September 29, 2014, 12:59:45 am
content: Nice score, great price.
amprobe am-530  or uni-T 61D? - Page 1
Forum section: electronics / testgear

author: giorgiorott
author_rank: Newbie
timestamp: September 28, 2014, 06:30:38 pm
content: Hi!, I have to choose between amprobe am-530 and uni-T 61D.Both have true rms,analog bar,and capacitance up to 4000uF,and the same price range (40-50Eur).Which of these has best speed reading,fast contuinity test,and building quality?I hope that someone help me.thanks in advance
HP 54501A Scope Problems - Page 1
Forum section: electronics / testgear

author: dhoneycutt
author_rank: Newbie
timestamp: September 27, 2014, 02:41:47 am
content: Hello Group,I have recently acquired an eBay HP 54501 that passes all self tests, but has the vertical jitters. I just won't settle down. The zero axis is constantly hunting. Also, the scope will occasionally shut off and immediately re-start. Where should I start my troubleshooting? Any ideas or suggestions will be appreciated.Thank you,Dave

author: mij59
author_rank: Frequent Contributor
timestamp: September 27, 2014, 03:47:02 am
content: Hi,It could be a problem with the power supply.Some things you could do.Take a good look at the (power supply) boards, look for bad caps, solder joints, connectors, etc.Download the service manual.Check the power supply voltages.Post some photo's of the boards.

author: dhoneycutt
author_rank: Newbie
timestamp: September 27, 2014, 05:16:30 am
content: Should have mentioned in my original post ... I did check the power supply voltages. All are spot-on with no fluctuation.Thanks,Dave

author: mij59
author_rank: Frequent Contributor
timestamp: September 27, 2014, 06:28:45 am
content: Quote from: dhoneycutt on September 27, 2014, 05:16:30 amPictures would be nice.Did you check the ripple voltages of the power supply ?Maybe there are voltage regulators elsewhere on the boards.

author: tautech
author_rank: Super Contributor
timestamp: September 27, 2014, 07:13:07 am
content: Quote from: mij59 on September 27, 2014, 03:47:02 amAdd to this list:re-seat socketed devicesre-seat PCB connectorsClean possibly dirty/oxidised switches/range selectorsCheck for cracked/broken or dirty input BNC'sPossible faulty probe?

author: oldway
author_rank: Super Contributor
timestamp: September 27, 2014, 11:12:16 am
content: The vertical jitters is only on one channel or on the four channels ?And there is jitters on the display or not?It may be a display unit problem (crt monitor assembly).

author: dhoneycutt
author_rank: Newbie
timestamp: September 27, 2014, 12:18:30 pm
content: Thanks for all the suggestions.... I will work through them and update this post.1- Photos coming2- Power supply is voltages are clean and stable3- Vertical jitters on all channels4- Isolated scope probe by connecting input direct with BNC cable5- Screen does not jitter, only the tracePossible hint.... the scope randomly shuts down (including the fan) and then immediately restarts. I think something is going on in the power supply, even though the output looks good.Dave

author: dhoneycutt
author_rank: Newbie
timestamp: September 27, 2014, 12:29:32 pm
content: Service manual is very limited, but I am attaching for your review.Dave
fluke 8846a software - Page 1
Forum section: electronics / testgear

author: free_electron
author_rank: Super Contributor
timestamp: September 26, 2014, 05:14:52 am
content: anyone know wher i can get the flukeview software ( basic version , the one that is shipped with the machines for free )i got the firmware updater , just want the view software.i scored a 8846a that had faulty ohms for a the price of two burgers (not mcdo , quality burgers in restaurant) . fixed it ( analog multiplexers were bad dg442 type chips)

author: robrenz
author_rank: Super Contributor
timestamp: September 26, 2014, 11:19:52 am
content: I have the FlukeView Forms Basic version 3.6 disk if that helps you.Edit: You can probably download fromhere

author: ElektroQuark
author_rank: Unknown
timestamp: September 26, 2014, 01:10:31 pm
content: HERE

author: dr.diesel
author_rank: Super Contributor
timestamp: September 26, 2014, 02:40:53 pm
content: Quote from: free_electron on September 26, 2014, 05:14:52 amHa, that's a great score on a fantastic meter!
recommend a USB> ethernet device server for fluke scope meter et. al. - Page 1
Forum section: electronics / testgear

author: strantor
author_rank: Contributor
timestamp: August 30, 2014, 11:21:04 pm
content: I have a fluke scopemeter 190-104 and I want to be able to connect with it remotely over the internet. I see several usb device servers for sale but reading comments on most of them leads me to believe that if you stray too far from the beaten path (external hdds, printers) you're out of luck. The scope meter uses FTDI drivers so know I'm dealing with glorified serial data and it shows in how slow it takes to suck a recorded waveform out of it. I can't imagine this would be too demanding for most of the USB> ethernet device servers out there, but I'd like to hear some personal experience from someone whose done it (successfully or unsuccessfully) with the scopemeter (or at least any other FTDI device) prior to making a purchase....AND if that weren't enough, I'm considering purchasing a USB logic analyzer, most likely zeroplus, and I predict that will be asking a whole lot more from the usb device server. So has anybody got an idea what USB server would work with a device like THAT?

author: Rasz
author_rank: Super Contributor
timestamp: August 30, 2014, 11:46:55 pm
content: dont know about brand new plug&play black boxes, but if its FTDI you can just re-purpose any Openwrt router with USB port/rasppee.

author: strantor
author_rank: Contributor
timestamp: September 20, 2014, 03:01:29 pm
content: Checking back in here to let you all know what I found. I bought this fancy black box for $100 USD: (Industrial USB 2.0 Over IP Network 4-Port Hub). It worked great for the Fluke 190 series II Scope, and also my el-cheapo Hantek 108 8-channel "scope." It also worked for Arduino, my camera, my Samsung Tablet, external HDDs, etc. The software is very intuitive and easy to use. I recommend you try this device first if you're looking for something similar, as you won't find anything more functional for less money.The bad: It wouldn't connect to Omron PLC or Yaskawa VFD, which is a big deal for me. I am still looking for a product that meets ALL my needs. And when it doesn't like a device, it doesn't complain with a nice popup, it throws a wrench into your processor (BSOD). The other negative is minor for me, may be major for you; your PC's IP address must be in the same IP subnet as the USBNET device. If they aren't in the same subnet, the USBNET software will still recognize the device, but won't let you connect to it and use the attached USB devices.

author: David Hess
author_rank: Super Contributor
timestamp: September 27, 2014, 01:48:48 pm
content: Quote from: strantor on September 20, 2014, 03:01:29 pmThat is weird. I would expect it to take deliberate effort to create a restriction like this.Maybe it relies on IP multicast for device discovery or configuration.
Update on non working AD584LH voltage reference - Page 1
Forum section: electronics / testgear

author: BillWojo
author_rank: Regular Contributor
timestamp: September 22, 2014, 08:49:51 pm
content: Well, I contacted the seller and he is sending me a new unit, said to keep the old one. It was leaking and the battery swelled up when I put the 5VDC charger on it. Decided to cut out the old battery and see if I could run it off just the charger for now. Opened it up, cut the leads close to the battery and cleaned up the leakage inside. When I put it on the charger the blue led flashes and goes out. If I push the button the blue led comes on and all 4 red leds come on briefly and than go out. The unit still does not work. Anyway to salvage this thing?Thank youBillWojo

author: BillWojo
author_rank: Regular Contributor
timestamp: September 27, 2014, 03:37:55 am
content: gazelle, you were right, without the battery in the circuit it will not operate. I found a battery from an old cell phone and hooked it up temporary. It started working. I'll have to look at ordering one of the batterys that you linked as this one is just a little to big to fit in the unit.ThanksBillWojo
Rigol DS1052E .wfm integration - Page 1
Forum section: electronics / testgear

author: nsayer
author_rank: Regular Contributor
timestamp: September 22, 2014, 02:44:48 pm
content: So far as I can tell, my DS1052E doesn't have an integration function in its MATH menu. Which, 99.44% of the time is just fine.Now, this ONE time, I actually could use it.I wonder if there's a way to capture a .wfm file and process it externally in order to perform the equivalent operation. Has anyone tried taking this route?

author: miguelvp
author_rank: Super Contributor
timestamp: September 23, 2014, 05:40:07 am
content: does it have an area measuring capabilities.

author: nsayer
author_rank: Regular Contributor
timestamp: September 25, 2014, 09:24:50 pm
content: No.. That's what integrationis, after all.

author: miguelvp
author_rank: Super Contributor
timestamp: September 25, 2014, 10:43:32 pm
content: just add the values from the waveform, that's what integration is anyways, just the sum of the values that gives you the area.
How does the 50ohm feed through or termination work with 1:10 probes? - Page 1
Forum section: electronics / testgear

author: alank2
author_rank: Super Contributor
timestamp: September 25, 2014, 09:43:35 pm
content: Hi Everyone,Please explain to me what the purpose is of the 50ohm option on scopes. If you have it enabled then it loads the signal with a 50 ohm resistance to ground, right? So the output signal needs to be strong or have low impedance, right? Can you monitor that output signal with a probe in 10x mode, or should you switch to 1x mode?Thanks,Alan

author: Fank1
author_rank: Regular Contributor
timestamp: September 25, 2014, 09:56:36 pm
content: 50 ohm terminations are used when one wants to directly read the output of a device with a 50 ohm output impedance.The probes are intended to work with the scope input impedance, usually 1 meg ohm and should not be used with the termination / feed thru.

author: tggzzz
author_rank: Super Contributor
timestamp: September 25, 2014, 09:58:03 pm
content: If you have a 50ohm source (e.g. most RF equipment) then it can be connected directly to the oscilloscope's 50 ohm input, using a 50 ohm cable of course.If you have a "low impedance passive probe" a.k.a. "Z0 probe" then it requires a 50ohm input. Such probes are cheap, robust and have bandwidths in the 1GHz-6GHz range. Example: HP10020, or Agilent N2874/6A, 54006A, and 1163A

author: alank2
author_rank: Super Contributor
timestamp: September 25, 2014, 09:59:06 pm
content: Quote from: Fank1 on September 25, 2014, 09:56:36 pmMeaning that when one is using a 50ohm termination, you shouldn't use a traditional scope probe?

author: alex.forencich
author_rank: Frequent Contributor
timestamp: September 25, 2014, 10:03:47 pm
content: Quote from: alank2 on September 25, 2014, 09:59:06 pmMore or less. Standard 1X and 10X passive probes need 1 meg input impedance. However, active probes generally want a 50 ohm input impedance as they have an amplifier and line driver in the probe tip. Some high-end oscilloscopes only support 50 ohm inputs so you either have to use an active probe or you can only feed a signal from an output that expects a 50 ohm load into the scope. Such as a high speed serial signal on a 100 ohm differential trace that terminates in a pair of SMA connectors.

author: tautech
author_rank: Super Contributor
timestamp: September 25, 2014, 10:06:06 pm
content: Nice short article on this subject:http://www.eetimes.com/author.asp?section_id=36&doc_id=1319495

author: tggzzz
author_rank: Super Contributor
timestamp: September 25, 2014, 10:24:06 pm
content: You need to understand how to connect a scope to the circuit-under-test. A good starting point ishttp://uk.tek.com/document/primer/abcs-probes

author: Marco
author_rank: Super Contributor
timestamp: September 25, 2014, 10:32:07 pm
content: Quote from: alank2 on September 25, 2014, 09:59:06 pmIndeed, but you can make a simple resistive divider probe very cheaply.koti.kapsi.fi/jahonen/Electronics/DIY 1k probe/Careful with 50 Ohm inputs by the way, if they are any good they will not have much input protection.
uCurrent Weirdness - Page 1
Forum section: electronics / testgear

author: Mag748
author_rank: Contributor
timestamp: September 24, 2014, 03:21:13 pm
content: Hello,Long time viewer, first time poster. Hope all is well with everyone on the Forum.I pulled out my uCurrent for the first time since receiving it earlier in the year to measure the current on a battery operated device I made. I set the uCurrent to 1mV/uA and hooked it up in line with a 9V battery and measured the output voltage with a Fluke 179 in mV mode. See the video found at this link:https://www.dropbox.com/s/pkkthrlje84v295/uCurrent.mp4?dl=0As you can see, the measured current fluctuates wildly based on some extraneous elements. I'm sure there is a valid explanation for this phenomenon and I would appreciate any ideas on the matter.Image of the inside of the box for anyone curious:https://www.dropbox.com/s/fgd7koqdjyquoxq/Inside%20Box.JPG?dl=0Sincerely,Marcus

author: idpromnut
author_rank: Unknown
timestamp: September 24, 2014, 03:29:47 pm
content: Can you post a schematic of your circuit? It might be a component/part in your circuit that is reacting to the proximity of your hand.

author: Mag748
author_rank: Contributor
timestamp: September 24, 2014, 04:01:57 pm
content: Quote from: idpromnut on September 24, 2014, 03:29:47 pmYou're going to kill me, but this is the best I've got at the moment.Schematic:https://www.dropbox.com/s/5xpkdi9710y36xq/Rough%20Schematic.pdf?dl=0I've yet to digitize the schematic, but let me know if you have any questions about that thing.Btw, I just realized I have no capacitor on the inputoroutput of the VReg. The Datasheet calls for 1uF ceramics on each side as a typical application. That may be an issue.Thanks!

author: timb
author_rank: Super Contributor
timestamp: September 24, 2014, 04:14:37 pm
content: Put caps on your vreg, you knucklehead!Sent from my Smartphone

author: idpromnut
author_rank: Unknown
timestamp: September 24, 2014, 04:20:23 pm
content: Quote from: Mag748 on September 24, 2014, 04:01:57 pmI'm not qualified to kill anyone based on their circuit design or drawing capabilitiesI agree with the caps, but for fun, hook a scope up to the output of the Vreg and see what happens when you run the same hand waving experiment.
Fluke 8846A or alternative options advice needed - Page 1
Forum section: electronics / testgear

author: p5200
author_rank: Contributor
timestamp: September 25, 2014, 11:14:21 am
content: I've been looking at the Fluke but, was wondering about other brands of equal or, better prospects and would appreciate all suggestions.

author: dr.diesel
author_rank: Super Contributor
timestamp: September 25, 2014, 11:18:08 am
content: For the price, you can't beat the 8846A, a superb bench meter.Note, the 8846A is the same as the Tek DMM4050.
Blue ESR test leads - Page 1
Forum section: electronics / testgear

author: plus6dbE
author_rank: Contributor
timestamp: September 22, 2014, 03:56:41 pm
content: I recently purchased the Blue ESR kit from Anatek and I put it together over the weekend. It seems to be working great so far, except that I'm not crazy about the screw-on banana plugs that it came with (the reading on the meter jumps around alot with those things).So I'm looking for an alternative, perhaps just soldering in some sharp Pomonas or something like that. I've also considered maybe adding some banana plugs so I can easily swap out the leads.Since it looks like there are some folks here on the board who have used the Blue ESR for a while now, I thought I'd check in and see what others have done - what works, and what doesn't. Has anyone added jacks? Or am I better off soldering in some better leads?

author: mariush
author_rank: Super Contributor
timestamp: September 22, 2014, 04:12:13 pm
content: Any test leads will do, don't bother spending $$ for quality leads.The meter just gives an approximate value, doesn't matter if the value shown jumps around a bit. A capacitor either has low esr or the value is much higher than normal, the quality of the leads doesn't affect the measurement enough to matter.

author: katzohki
author_rank: Frequent Contributor
timestamp: September 22, 2014, 08:18:33 pm
content: You can always solder onto the screw-on connection to secure it better.

author: plus6dbE
author_rank: Contributor
timestamp: September 23, 2014, 07:01:57 pm
content: Thanks for the advice. I'll try soldering on the alligator clips and see how it goes.

author: notsob
author_rank: Frequent Contributor
timestamp: September 23, 2014, 08:17:56 pm
content: If you look around you can find references where owners have put sockets into the blue unit and are using 'standard' test leads
HP 1980B Oscilloscope waveform storage option 19860A - Page 1
Forum section: electronics / testgear

author: tjw
author_rank: Contributor
timestamp: September 24, 2014, 11:58:29 am
content: Hi,I have a HP 1980B oscilloscope measurement system with the 19860A waveform storage option fitted. The 1980B is a 22lb anchor from the early 80's however it is quite a unique piece of test equipment with it's 6" crt and single rotary encoder to control all functions as well as an 'Auto-Scope' button. See Tekfan's post of his efforts in repairing such a beast.Anyway, I am hoping someone is able to help me with the 19860A waveform storage option. It works and displays a stored waveform then displays the error message 'Auto Cal failed'. I have a downloaded copy of the 1980B service manual but it has no mention of the 19860A option. The full manuals are available on ebay but at 500+ pages it is cheaper to buy another 1980B ! I will appreciate any help in obtaining the manual section for the 19860A option.Thanks, tjw.

author: Stray Electron
author_rank: Super Contributor
timestamp: September 24, 2014, 06:28:08 pm
content: In for results. I have six of these that I bought dirt cheap about six years ago that I've never touched. The thing that I liked about the 1980s is that they were designed to be controlled by and return readings over HP-IB.

author: David Hess
author_rank: Super Contributor
timestamp: September 24, 2014, 08:39:44 pm
content: I have always considered the "one big rotary encoder" interface to be a fad that did not die quickly enough. It belongs with the "one big mouse button" and skeuomorphic interfaces.
Flir i7 calibrating every 15 seconds? - Page 1
Forum section: electronics / testgear

author: luis garcia
author_rank: Regular Contributor
timestamp: September 29, 2014, 02:49:30 pm
content: My Flir i7 performs a calibration test every 15 seconds. The message, shown on the bottom edge of the display, is "Callibrating..." .Is this normal ?

author: gmit77
author_rank: Regular Contributor
timestamp: September 29, 2014, 07:27:23 pm
content: ciao Luis, this can be normal, I will investigate tomorrow with our FLIR support contact and I'll come back to you.

author: Fraser
author_rank: Super Contributor
timestamp: September 29, 2014, 07:35:44 pm
content: NUC every 15 Seconds is not normal once a thermal camera has been running for a minute or two. The NUC is used to equalise the pixels outputs. If your camera is needing NUC events every 15 seconds it is detecting something unusual with the output of the microbolometer or the temperature reference that monitors the chassis.Aurora
Off Brand 12MHz DDS Function Signal Generator.  Any experience? - Page 1
Forum section: electronics / testgear

author: Jebnor
author_rank: Regular Contributor
timestamp: September 24, 2014, 05:07:18 pm
content: I found this on aliexpress. I'm wondering how good/bad/ugly it might be. Anyone have any experience with this product? There appears to be a 5,8,10 and 12MHz Versions of it.http://www.aliexpress.com/item/1pcs-new-12MHz-DDS-Function-Signal-Generator-Sine-Square-Wave-Sweep-Frequency-Meter/2035046394.html
HP4952A protocol analyzer software - Page 1
Forum section: electronics / testgear

author: croyleje
author_rank: Regular Contributor
timestamp: September 17, 2014, 10:37:42 pm
content: hi everyone,i recently acquired an HP4952A and really like it i have managed to get copies of the service and operators manuals but was hoping someone here might have copies of the software for the unit. in particular i am looking for the Testing Library but anything anyone has would be great. any help or anything would be greatly appreciated.thank youJason

author: dfmischler
author_rank: Frequent Contributor
timestamp: September 20, 2014, 01:21:30 pm
content: There are links onhttp://www.classiccmp.org/cini/systems.htmto manuals and disk images for the HP 4952A. Scroll down to the "Hewlett Packard" heading.

author: croyleje
author_rank: Regular Contributor
timestamp: September 22, 2014, 10:10:34 pm
content: thank you so much i have been looking for awhile i really appreciate the help thank you again Jason

author: dfmischler
author_rank: Frequent Contributor
timestamp: September 22, 2014, 11:12:26 pm
content: You're welcome. Do you have the service manual in PDF? If so, can you send me a copy, or a link, or whatever?
Info on the TekElec TE9000 Lock-in Amplifier? - Page 1
Forum section: electronics / testgear

author: sean0118
author_rank: Frequent Contributor
timestamp: September 22, 2014, 11:21:53 am
content: Hi,Is anyone familar with the TekElec TE9000 Lock-in Amplifier/phase sensitive detector? I recently came across one and it even took awhile to find out what it was (almost no hits on google). I'm just wondering what sort of quality they are and whether they are obsolete now? To me it seemed to be 1970's with analogue dials and knobs, no precision digital input.
Rigol DSA815 - still a good buy? - Page 1
Forum section: electronics / testgear

author: cksa
author_rank: Regular Contributor
timestamp: September 22, 2014, 08:57:13 am
content: Not sure if I should buy a spectrum analyzer to play with now or next year? Does anyone know if Rigol are going to come up with a new version soon? What about the competitors?
Metrix HA1342 probe for OX8042 or OX8062 ???? - Page 1
Forum section: electronics / testgear

author: kripton2035
author_rank: Super Contributor
timestamp: September 23, 2014, 06:26:06 pm
content: Hi,I recently bought a used ox8042, which is a scope with a differential probe integrated in it.there are two input bnc : CH1+ and CH1- (also the same with channel 2)in the documentation, they talk about a special measuring probe for using the differential mode : the HA1342no correct result found from google, so here I am !does anyone have a picture of that probe, or how do I connect the ground of the bnc's when I measure in an smps in differential mode for example ?thanks.