hybridfree/eevblog-posts huggingface dataset:
Proskit MT-1710 Multimeter review - Page 1
Forum section: electronics / testgear

author: Dhanesh
author_rank: Newbie
timestamp: June 16, 2016, 08:21:28 pm
content: Greetings everyone. I am willing to buy a multimeter, however not a very professional ones like Fluke, Agilent, etc and my budget is within $50 to $80. My first look was the new proskit MT-1710 true RMS digital Multimeter since it is almost a fully featured multimeter and has a higher specs for its capacitance, which can measure up to 100mF (100000uF). Before I would take any step in purchasing it, I would like to know more if this multimeter has input protections like the MOVs, PTC and fuse ratings.Can anyone do a review and teardown on this Proskit MT-1710 multimeter for inspection?Here the official link for this multimeter:http://www.prokits.com.tw/Product/A05E4956FDDBD156Thanks.

author: retiredcaps
author_rank: Super Contributor
timestamp: June 16, 2016, 10:44:30 pm
content: The MT-1710 looks a lot like the Victor V97. Not identical in button layout, but very close. Rotary dial layout is virtually identical. See

author: retiredcaps
author_rank: Super Contributor
timestamp: June 16, 2016, 10:54:23 pm
content: Actually it is identical to the Victor VC97. A quick search on eevblog showshttps://www.eevblog.com/forum/testgear/victor-vc-97-multimeter-mini-review/

author: Smafe
author_rank: Newbie
timestamp: September 16, 2018, 11:41:15 pm
content: Hi, first time posting anything. I do have the Proskit MT-1710. I purchased it before I knew much about multimeters and electronics. It has more PTC's and MOV's than pictured in the Victor, however it still sustained quite a bit of damage when I tried to measure 230V AC. I now know that mains power is much higher than 230v. When I opened it up the solder around the inputs was melted. Both glass fuses were blown and there was a bit of heat deformation. The pcb has VC97 on the top version 2.4 The narrow AC bandwidth isn't the best and any other waveform apart from sine, triangle, and possibly square has an accuracy of 8%. I purchased an Elenco RS-500 resistance substitution box and an Electrics Salon 1nF - 9999nF four decade capacitance board and it performed pretty well.

author: hulk69
author_rank: Contributor
timestamp: September 11, 2019, 11:22:16 am
content: I have one that got completely out of calibration (10k resistor measured 2.8k) and there does not seem to be any potentiometer inside to adjust it...Does anyone know if this is it? or is ther an hiden way to adjust it?
Anritsu 69269A signal generator Burnt up A21 board (filter/rectifier board) - Page 1
Forum section: electronics / testgear

author: ravig
author_rank: Newbie
timestamp: January 05, 2016, 06:33:57 pm
content: Hello,Does any one have schematics or know the DC output voltage from the A21 board from a anritsu 69269A signal generator. The A21 board simply takes the AC line voltage /filters it and rectifies it. I am guessing that the DC voltage is simply line rectified. I want to be sure.. I need to spin a PCB to replace this board since I cannot find a replacement board from anritsu, ebay etc....The part should be the same for the family of generators that are 692XXA types...Appreciate it!!Ravi###rapidrf@gmail.com(remove the three hashes to email .. done to avoid the spambots)

author: Etech
author_rank: Newbie
timestamp: September 11, 2019, 04:23:40 am
content: I believe the output is +160V and -160V, these go into the switching power supply A19.
Evision systems GmbH - experience, recommendation - order of digital oscilloscop - Page 1
Forum section: electronics / testgear

author: Aang
author_rank: Contributor
timestamp: September 11, 2019, 05:14:19 pm
content: Hello.I would like to buy a digital oscilloscope from evision-webshop.de. Digital oscilloscopes:https://evision-webshop.de/epages/e6077b56-ef34-48be-850f-07696838e42e.sf/sec20eca16537/?ObjectPath=/Shops/e6077b56-ef34-48be-850f-07696838e42e/Categories/Hersteller/Siglent/OszilloskopeI would like to know if you would recommend me the company, what is your experience with them? Are they reliable, or are there any risk to order them?Thank you

author: tautech
author_rank: Super Contributor
timestamp: September 11, 2019, 07:53:23 pm
content: Interesting, they don't show on here:https://www.siglenteu.com/how-to-buy/However they seem to list the range of Siglent scopes so maybe they are a new authorized Siglent partner.What model interests you ?

author: Aang
author_rank: Contributor
timestamp: September 12, 2019, 06:16:12 am
content: This is a model SDS1202X-E. They offer me a better price and I need to be sure if they are trustworthy because they require money in advance (at least a deposit).

author: nctnico
author_rank: Super Contributor
timestamp: September 12, 2019, 06:18:37 am
content: Google their name and 'probleme' in German. See what turns up.

author: tautech
author_rank: Super Contributor
timestamp: September 12, 2019, 06:31:13 am
content: Quote from: Aang on September 12, 2019, 06:16:12 amNormal EU price is 339 Euro. It is normal for an online company to require full payment before despatch, I do !Some companies will dispatch with a Purchase Order and require payment within a set timeframe.

author: nctnico
author_rank: Super Contributor
timestamp: September 12, 2019, 08:18:13 am
content: One thing to watch out for is that the prices are shown excluding VAT. Nowadays European webshops have to charge the VAT rate for the country of the buyer.

author: rf-loop
author_rank: Super Contributor
timestamp: September 12, 2019, 09:10:04 am
content: evision: "Terms and Conditions"Paragraphs 4. and 6. (and others) are important to read very carefully.There is, in center Europe, three places what are, imho, excellent. They are: Batronix, Batronix and Batronix.(I have not any relationship with B. except some times I have bought and I will buy something from B. And hitherto 100+% satisfied.)
Triaxial connectors once again - Page 1
Forum section: electronics / testgear

author: justanothername
author_rank: Regular Contributor
timestamp: September 10, 2019, 06:31:44 am
content: Hi.I recently aquired some gear with triax connectors (Keithley current source and electrometer). Aside from general restoration, I will upgrade it to 3-lug triax. I guess 2-lug cables will make me poor sooner or later.I allready foundhttps://www.eevblog.com/forum/testgear/fun-with-low-leakagebias-current-femtompere-electrometer-keithley-617/msg2573631/#msg2573631with an "inexpensive" connector/cable combination.I'm still unsure about the replacement connector.Version 1: Trompeter BJ77 (as mentioned once in the entire forum)Version 2: File it down to 1-lugAdditionally: Do you think it would be reasonably easy for me to make something like the Pomona 5342 by myself?Edit: If anyone in the german speaking region of europe has spare triax components to sell, please contact me.
service manual and calibration instructions for the B+K 2831D? - Page 1
Forum section: electronics / testgear

author: worsthorse
author_rank: Super Contributor
timestamp: September 02, 2019, 12:42:25 am
content: Wondering if anyone here has the calibration instructions or better yet the service manual and calibration instructions for the B+K 2831D. I have one on my bench that I'd like to tune up. Nothing found, other than the instruction manual, in any of the usual dusty corners of the interwebs.Thanks!

author: bdunham7
author_rank: Super Contributor
timestamp: September 02, 2019, 03:34:15 am
content: Shoot an email to:support@bkprecision.desk-mail.comand they'll probably send you what you need.

author: worsthorse
author_rank: Super Contributor
timestamp: September 02, 2019, 04:35:51 pm
content: Thanks. I will give that a try. I found a good phone number, too, which I will try tomorrow.

author: worsthorse
author_rank: Super Contributor
timestamp: September 04, 2019, 04:38:37 pm
content: I found a copy of the service manual and calibration procedure.

author: coromonadalix
author_rank: Super Contributor
timestamp: September 05, 2019, 10:44:32 am
content: would you share thoses infos here ?

author: worsthorse
author_rank: Super Contributor
timestamp: September 05, 2019, 04:35:29 pm
content: Quote from: coromonadalix on September 05, 2019, 10:44:32 amI need to get permission to post it. I don't think that will be a problem. Once that's done, I will post it athttp://bama.edebris.com/manuals/and update this thread when it is available. That way it will be freely available.

author: worsthorse
author_rank: Super Contributor
timestamp: September 10, 2019, 03:17:40 pm
content: I located copies of the user manual, service manual, and calibration instructions for the 2831D. They've been uploaded to:http://bama.edebris.com/manuals/b&k/2831d/They should also be on mods.dk in the next day or so. Enjoy!
Size of Signal Generators - Page 1
Forum section: electronics / testgear

author: queennikki1972
author_rank: Regular Contributor
timestamp: September 10, 2019, 07:04:40 pm
content: I am still new to A LOT. I have a question regarding signal Generators. I see they range from 5mhz to 60mhz and higher. I recently acquired an old 5mhz analog oscilloscope and in October buying a 200mhz Digital Scope. When a Signal generator says 60mhz, does that mean its literally only 60mhz or is it UP TO 60mhz from 0? I know I will get a laugh out of this, but Im sort of a slow learner.

author: DaJMasta
author_rank: Super Contributor
timestamp: September 10, 2019, 07:14:34 pm
content: They usually advertise their highest signal speed, and often other waveforms types have a lower max. I'd best to check out the datasheet when considering a specific model to see the full story.

author: StillTrying
author_rank: Super Contributor
timestamp: September 10, 2019, 07:27:23 pm
content: I see they range from 5mhz to 60mhz and higher.Signal and Function generators are things where you have to get themandMright especially when their lowest frequency range often goes down to well under 1 Hz.5 mHz = 0.005 Hz5 MHz = 5,000,000 Hz

author: tautech
author_rank: Super Contributor
timestamp: September 10, 2019, 08:35:21 pm
content: For the newbie to FG's, SG's and AWG's their max stated frequency is always for a sine wave.Square, Ramp, Pulse etc are generally substantially less.To my knowledge only the SDG1032X and ****62X offer square wave to the same max frequency as sine wave.Depending on your needs check that both channels provide the same output spec ie, amplitude is equal.Independant Phase and/or locked Phase is a good feature to have too.Generally to get the full picture of what they can/can't do, study of both the datasheet and users manual is required.

author: MarkF
author_rank: Super Contributor
timestamp: September 11, 2019, 12:14:58 am
content: You need to study the specs for the generator you are interested in.As @tautech indicated, the frequency range depends on the waveform.Typically, the max frequency specified is for their sine wave.Where, the others (like the square wave in particular) can be much lower.Considerations:- The frequency range is going to depend on your interests and the projects you might want to do.- Your budget. Do you want to buy or build. (I built a small 1Hz to 10MHz generator based on an AD9834.)Just my two cents:For me at least, I believe having an Arbitrary (AWG) waveform capability is not all it's cracked up to be.By that, I mean that it is probably rare that you will use it. The need for an AWG is a specialty niche.Basic sine, square and possibly PWM waveforms will get the most use.

author: tautech
author_rank: Super Contributor
timestamp: September 11, 2019, 01:03:16 am
content: Quote from: MarkF on September 11, 2019, 12:14:58 amDon't you have someone to send this ?From here:https://www.eevblog.com/forum/chat/a-valentine_s-day-activity-for-your-scope-and-function-generator/
JBC AD 2000 modify for using new T245 handpieces - Page 1
Forum section: electronics / testgear

author: tittu82
author_rank: Newbie
timestamp: September 10, 2019, 07:30:31 am
content: Hi to all!I own a great JBC AD2000 solder station, I have two old handpiece but as you probably know, there are no more spare cartdriges available, so when I will broke all my spares, there is no possibility to use this great station anymore. I know that a german guyhttps://www.mikrocontroller.net/topic/254049modified the AD 2000 to use the newer T245 handpiece with a selector. Of course I tried to contact that german guy but maybe he don't read that forum anymore.I ask you if someone know how to do the modify it since I bought also a T245 handpiece with both C245 and C470 cartdriges.Consider that if I plug the T245 into the station it only gets moderately warm and doesn't melt solder, I think that maybe only two wires of the thermocouple must be inverted but I want to know that for sure in order to not destroy anything.Thank you in advance!
Experimentation with Analog Devices ADALM2000 - Page 1
Forum section: electronics / testgear

author: RonFred2
author_rank: Contributor
timestamp: September 10, 2019, 05:57:12 am
content: I ordered my ADALM2000 from ADI directly. It took a few weeks to arrive but no hassles.I run through my experience with Activity 1: Simple Op-amps, Unity Gain Followerhttps://wiki.analog.com/university/courses/electronics/electronics-lab-1with the OP97 part.I posted my full report here:http://www.biophysicslab.com/2019/09/09/experimentation-with-analog-devices-adalm2000/
Need review on BK precision 9130B Power Supply - Page 1
Forum section: electronics / testgear

author: XaviPacheco
author_rank: Regular Contributor
timestamp: September 07, 2019, 08:58:15 pm
content: Hi,Has anyone used BK precision 9130B Triple output power supply for bench tests? Do you have other suggestions for multiple output DC power supplies?

author: Ordinaryman1971
author_rank: Frequent Contributor
timestamp: September 09, 2019, 05:56:43 am
content: I know Keithley re-badges those as they own for three times the money. I've never seen/owned/used this particular one but have few single output by BK. Great power supplies.Nice VFD displays. Pretty precise... actually very precise, down to .000, they give you actual voltage and current reading.... do what power supplies do.I guess, if you have the money I would go for it. There is a bunch of other options of course, I would probably pick something different... like older HP or maybe Instek, or even Rigol with its hackability.With older equipment you can get 10 of power supplies with the same range for the same money. With analog meters maybe, not that precise, no fancy rotary switches but still working like champs and making less noise.I guess as always you can say that there are ways to get more bang for your buck, but I like BK precision gear, almost as much as I like HP and Keithley.The rubber booths are blue, if you like blue, here is your power supply.
Defective FE5680A, worth giving it a shot? - Page 1
Forum section: electronics / testgear

author: thinkfat
author_rank: Unknown
timestamp: August 26, 2019, 09:34:07 am
content: Hi,I found this listing on fleabuy:eBay auction: #183482927775It looks like it's the model described here:http://www.dd1us.de/Downloads/precise%20reference%20frequency%20rev%201_1.pdfI know it has only a 1PPS output and would need modification to work as a 10MHz standard.Do you think it's worth giving it a shot and getting it to work? I'm a reasonably experienced hobbyist, lab equipped with a decent soldering and hot-air station, microscope, Rigol 1054Z, multimeters, frequency counter and not afraid to use the stuff

author: PA0PBZ
author_rank: Super Contributor
timestamp: August 26, 2019, 10:42:08 am
content: It looks like it's been on fire, overpriced and incomplete. I wouldn't touch it for free.

author: nctnico
author_rank: Super Contributor
timestamp: August 26, 2019, 10:46:31 am
content: Don't waste money in this.

author: thinkfat
author_rank: Unknown
timestamp: August 26, 2019, 10:50:14 am
content: Yeah, it looks pretty banged up. It's likely not the money but the time wasted on it that'd make me think twice.

author: ps
author_rank: Regular Contributor
timestamp: August 27, 2019, 05:57:16 pm
content: For a lab standard you might prefer a unit with direct 10 MHz output (like the LPRO-101). These modules with DDS are more flexible because you can change their output trequency, but they have significantly higher phase noise (jitter). There has been an AMSAT journal article comparing different atomic references, but I don't have the reference available now.Patrick

author: thinkfat
author_rank: Unknown
timestamp: September 07, 2019, 09:10:27 pm
content: Alright, so I found two LPRO on ebay, one is an Efratom LPRO-101, the other one is a DATUM LPRO-FLX. They look pretty similar, maybe they are identical. Both are defective, but there's a pretty detailed repair guide for the Efratom. If the FPGA isn't shot, I'm pretty sure I can get them to work.Gesendet von meinem Nokia 6.1 mit Tapatalk

author: tkamiya
author_rank: Super Contributor
timestamp: September 09, 2019, 02:12:53 am
content: I wouldn't pay this much for a known damaged one that took pretty good beating. You can buy a working one for twice that.... if you look long enough.
Wavetek 8520 Signal Gen hook up question - Page 1
Forum section: electronics / testgear

author: Crambone
author_rank: Frequent Contributor
timestamp: September 08, 2019, 04:57:24 pm
content: So when I first received this I hooked to my scope and the 200Mhz frequency was off 4Mhz. Now looking at the manual I see when they hook it up is shows from Signal Gen to Scope with T fitting in between and 50ohm load. I didn’t hook up with the 50ohm load in middle could this be why I’m not getting correct frequency? Unfortunately I need to order an adapter to hook up that way why I’m asking before I get one.

author: PA0PBZ
author_rank: Super Contributor
timestamp: September 08, 2019, 05:51:04 pm
content: More likely your scope is 2% off.
Rigol DG1022z PC communication - Page 1
Forum section: electronics / testgear

author: belzrebuth
author_rank: Frequent Contributor
timestamp: September 08, 2019, 04:00:16 pm
content: Hi all,I'm trying to setup Ultrawave for uploading arb functions to my newly acquired DG1022z to no avail.Ultrawave seems to be correctly installed because it recognises my DS1054z as a USB device and it even tries to connect to it but that's not the case with the DG1022z.What could be the issue?I've not seen anything on the net confirming that the 1022z is working with Ultrawave but I'm really hoping I'm doing something wrong because it would be great to upload arb functions to it.Anyone have any ideas?Edit: To answer my own question it seems that the ultrawave program is for the dg1022 not the 1022z.I've installed ultrastation and it detects the hardware okay.I can now upload hand drawn waves etc

author: Crambone
author_rank: Frequent Contributor
timestamp: September 08, 2019, 05:00:02 pm
content: Did you try turning off firewall or any other programs that may interfere? Just a guess?

author: belzrebuth
author_rank: Frequent Contributor
timestamp: September 08, 2019, 05:39:14 pm
content: I wonder if there is a student discount on the ultrastation software.The math functions are great to have and very easy to use but the trial willl only last 15 days..
Amp Draw of Hot air station.. - Page 1
Forum section: electronics / testgear

author: queennikki1972
author_rank: Regular Contributor
timestamp: September 08, 2019, 01:09:02 am
content: Is it my imagination or did the lights dim when i got to 350 degrees Celsius..I really need to find out what the amp draw is on the 862D+ at those temps..

author: oPossum
author_rank: Super Contributor
timestamp: September 08, 2019, 01:13:20 am
content: It is normal for the lights to dim and brighten as the heating element turns on an off. I think I measured current draw of about 10 amps.
HP 53132A pre-scaler choices - Page 1
Forum section: electronics / testgear

author: tkamiya
author_rank: Super Contributor
timestamp: September 06, 2019, 06:30:15 pm
content: I am looking to add a 3GHz pre-scaler to newly acquired HP53132A. Looking around, I see plenty of clones from China available. There seem to be two types. One appears to be a direct clone of HP version with chain of MMIC amplifier, and the other is much simpler design with just two chips. Does anyone have experience with one or the other? How are they different? Additionally, are there experiences on 10GHz versions?https://www.ebay.com/itm/Compatible-53131A-53132A-53181A-Option-030-3GHz-Frequency-Counter-F-HP-Agilent/113409537838?hash=item1a67bc372e:g:U2YAAOSwyUFb~9hphttps://www.ebay.com/itm/Compatible-53131-53132-53181-Frequency-counter-OPT-030-3G-option/111841071891?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D40719%26meid%3Ddbbc44bea73d4a5c879da34c95f2ee23%26pid%3D100005%26rk%3D3%26rkt%3D12%26mehot%3Dag%26sd%3D181866472102%26itm%3D111841071891%26pmt%3D1%26noa%3D0%26pg%3D2047675&_trksid=p2047675.c100005.m1851

author: tkamiya
author_rank: Super Contributor
timestamp: September 06, 2019, 06:31:34 pm
content: Here's a 10GHz versionhttps://www.ebay.com/itm/HP-AGILENT-53131-53132-53181-Simple-Option-Frequency-Counter-Input-100M-10GHz-B/173674565927?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D40719%26meid%3D6ac588462ad24cbcb6ce1d680721c92d%26pid%3D100005%26rk%3D2%26rkt%3D12%26sd%3D113409537838%26itm%3D173674565927%26pmt%3D1%26noa%3D0%26pg%3D2047675&_trksid=p2047675.c100005.m1851

author: jadew
author_rank: Frequent Contributor
timestamp: September 06, 2019, 06:47:51 pm
content: Hey,Also take a look at these ones:https://cojotech.com/I'm making them.Cheers

author: tkamiya
author_rank: Super Contributor
timestamp: September 06, 2019, 07:08:48 pm
content: Very nicely made! I guess 12GHz version is still in works?How come 8GHz version is limited to 5GHz on 53132a?

author: jadew
author_rank: Frequent Contributor
timestamp: September 06, 2019, 07:16:35 pm
content: Indeed, I was actually working on the 12 GHz board when I saw this topic.The 5 GHz counters were originally using the original 12.4 GHz boards, but were limited in software. The same thing applies for the 1.5 GHz counters - they were using the 3 GHz prescalers, but were limited in software.In fact, even the 12.4 GHz ones are limited. I'm sure I wrote the maximum value down, but I don't have it available at this very moment (might be 12.(9) GHz).
IT7321 vs BK 9801 AC Power Supply - Page 1
Forum section: electronics / testgear

author: hulaomr
author_rank: Newbie
timestamp: August 31, 2019, 12:46:05 pm
content: Hello,I bought a AC Power SupplyIT7321.https://www.bkprecision.com/products/power-supplies/9801-programmable-ac-power-source.html#docsoftI'm looking toremote controlthe IT7321, but there is not enough information our there. Already try the application IT900 without success.Recently, I found out that BK sells similar product, namedBK 9801which includes a software application to remote control the device.https://www.batronix.com/shop/itech/IT7300.htmlAlso tried to see if the application can connect with same device, but not success.Any suggestion about this equipment and the options to remote control is appreciated.Thanks

author: hulaomr
author_rank: Newbie
timestamp: September 04, 2019, 09:48:49 am
content: Hello,The situation was solved using the application IT9000_PV7300.Thanks

author: Kean
author_rank: Unknown
timestamp: September 05, 2019, 01:20:53 pm
content: I have an IT7321 which I have occasionally controlled via the IT9000 app, so if you have any other questions let me know.The BK Precision BK9801 is the same device as the IT7321 (but usually more expensive). BK Precision rebadges a lot of ITECH equipment, because BK owns ITECH.
HP 8645A Agile Signal Generator  to Buy or Not to Buy - Page 1
Forum section: electronics / testgear

author: iRepairElectronics
author_rank: Contributor
timestamp: September 05, 2019, 04:57:39 pm
content: So i have an opportunity to purchase one of these for about 400.is this good for doing am-fm radio alignment?obviously its capable of much more or should i concentrate on something likea 8657b.
Upgrading Rigol MSO5000 Series LCD (Thoughts?) - Page 1
Forum section: electronics / testgear

author: 6E5
author_rank: Regular Contributor
timestamp: April 21, 2019, 09:22:42 pm
content: I'm thinking of purchasing the Rigol MSO5000 series - some of the features that I like are the HDMI out, the built in function generator, the internet and app connectivity, the touch screen.I am generally disappointed in the quality of the screens though, of oscilloscopes in general. I figure if I'm looking at something that costs more than a phone, it should probably look pretty good.Has any had any experience upgrading the LCD? At the very least I guess it would be the same to use the HDMI out and somehow extend the touchscreen controller inputs so they can be used externally.

author: Fungus
author_rank: Super Contributor
timestamp: April 22, 2019, 01:30:31 am
content: Quote from: 6E5 on April 21, 2019, 09:22:42 pmWhat's your opinion of those $500 multimeters with low resolution black&white screens?

author: james_s
author_rank: Super Contributor
timestamp: April 28, 2019, 04:24:00 pm
content: What's wrong with the screen and what do you want to upgrade it to? The display is not really what you're paying for with a scope. You're not going to be watching movies on it.

author: AngusBeef
author_rank: Regular Contributor
timestamp: September 08, 2019, 11:17:09 pm
content: Quote from: james_s on April 28, 2019, 04:24:00 pmYou can, and you can play Doom too if you like - so why not?I agree the screen isn't what you're paying for primarily but if someone wants to update it why notSent from my SM-T820 using Tapatalk

author: Martin72
author_rank: Super Contributor
timestamp: September 09, 2019, 07:30:58 pm
content: Meanwhile the display brightness was increased, nevertheless this one is still interesting:9 Inch IPS Display

author: thm_w
author_rank: Super Contributor
timestamp: September 09, 2019, 08:39:32 pm
content: Have you actually used one in person?Don't waste your time. If you require a bigger screen go with HDMI and an external monitor or use the web interface on your PC.Quote from: 6E5 on April 21, 2019, 09:22:42 pmIts not really a reasonable argument when the screen on a phone is about 30-40% of total BOM cost, its a different market.

author: Sighound36
author_rank: Frequent Contributor
timestamp: September 09, 2019, 08:59:04 pm
content: May I suggest using a larger screen monitor via the hdmi I use a 46inch screen in the lab works well you can see the screen from all angles nicely. Cost was £150 from a games exchange shop.Scope is not touched and I use an hdmi splitter box for the other instruments that use hdmiNever had any issues with the screens on the 5000 or 7000

author: NoisyBoy
author_rank: Frequent Contributor
timestamp: September 09, 2019, 10:07:53 pm
content: This is a discussion from five months ago.Agreed, with all the display options available, there is no need to upgrade the internal screen.
Agilent N5052B Help - Page 1
Forum section: electronics / testgear

author: Hugoneus
author_rank: Frequent Contributor
timestamp: September 05, 2019, 03:17:58 am
content: Does any of you know about this instrument's Jitter licence key? I'd like to make a video about Jitter/Phase Noise.Thanks!

author: TiN
author_rank: Super Contributor
timestamp: September 05, 2019, 04:31:50 am
content: Perhaps Keysight can help you with demo key?
Fluke 87V used, did I get a dud? - Page 1
Forum section: electronics / testgear

author: Corner
author_rank: Regular Contributor
timestamp: September 04, 2019, 01:54:36 am
content: The meter's in very good physical condition. All measurement ranges seem to work fine. However, one of the startup options is behaving weird.When holding the backlight button during startup, the screen shows what's in the picture until I release the button, then it goes to normal measurement screen. Both my 179 and 117 show Loff when doing this.I've tested the backlight without using this startup option for 10 minutes, and it stayed on the whole time. So I suppose it'll just stay on forever.What could be possibly wrong with this? To be honest, I don't mind the backlight staying on forever, this is actually what I want, but I'm worried there might be more that's wrong with this meter. The serial number is an 8 digit number starting with 969.

author: mr.fabe
author_rank: Regular Contributor
timestamp: September 04, 2019, 03:20:34 am
content: Holding the Backlight button when powering the unit on does nothing per the user manual.For a list of Startup Features /Options, just review the user manualhttps://dam-assets.fluke.com/s3fs-public/80v_____umeng0200.pdf?tKDGTic.KN0dP9_UJVtSyLsuYWEUp3SYor watch a video

author: Corner
author_rank: Regular Contributor
timestamp: September 04, 2019, 03:32:01 am
content: Quote from: mr.fabe on September 04, 2019, 03:20:34 amHahah I feel so stupid just assuming things. Thanks a lot mate.So 87v's just have an infinitely on backlight? That's something I don't have on any of my other multimeters.

author: mr.fabe
author_rank: Regular Contributor
timestamp: September 04, 2019, 04:22:58 am
content: I don't recall my Fluke 87V as having an "always on" light mode... just low, high, and off.

author: Corner
author_rank: Regular Contributor
timestamp: September 04, 2019, 05:56:52 am
content: Quote from: mr.fabe on September 04, 2019, 04:22:58 amWhen I turn on the backlight, the light doesn't turn off at all. Does yours turn off on its own?

author: mr.fabe
author_rank: Regular Contributor
timestamp: September 04, 2019, 07:38:43 am
content: Correction... The backlight stays on until the timer kicks in 30 minutes later.
Datron 4700 - questions - Page 1
Forum section: electronics / testgear

author: Drirr
author_rank: Regular Contributor
timestamp: September 03, 2019, 11:10:19 am
content: Hi guys,I'm owner of oldschool and "vintage" Datron 4700 calibrator.Some questions for other owners:Is there any way to get service manual?I would like to make EPROM backup, but I do not want to loose my calibration data located in SRAM. Is there any way to remove processor board with battery without loosing calibration?Should I worry about EPROM content? Does anybody have backup?Thanks !

author: coromonadalix
author_rank: Super Contributor
timestamp: September 03, 2019, 09:44:06 pm
content: http://www.ko4bb.com/getsimple/index.php?id=manualshttp://www.ko4bb.com/getsimple/index.php?id=manuals&dir=06_Misc_Test_Equipment/Datron/Datron_D4000AIts a repository of many user and services manualsDo a search of Datron and you get the 4000 and 4708, maybe the 4708 share some designs ??the 4600 ?? w schematicshttps://doc.xdevs.com/docs/Datron/4600/Wavetek_4600_Transconductance_Amplifier_Service_Manual-datron4600.pdfand some forums discutionshttps://www.febo.com/pipermail/volt-nuts/2017-July/005285.html
just 4 fun: Mini Tek Parade - Page 1
Forum section: electronics / testgear

author: Martin.M
author_rank: Frequent Contributor
timestamp: June 04, 2014, 05:51:32 pm
content: missing: Tek 211 + 214 to be completegreetingsMartin

author: Wh1sper
author_rank: Regular Contributor
timestamp: June 04, 2014, 05:57:39 pm
content: Nice guys ;-)Would you please tell a bit more about the most right one?Is it a Voltage measurement or what?It seem it would a nice idea to create with old CRT a bunch of unusual meters ...

author: Martin.M
author_rank: Frequent Contributor
timestamp: June 04, 2014, 06:04:30 pm
content: the Tek 213 is a single channel portable scope with internal 0,1% Multimeter (V dc+ true rms, mA, ohms)in the good old time it was bad expensive.greetingsMartin

author: robrenz
author_rank: Super Contributor
timestamp: June 04, 2014, 06:25:16 pm
content: Very nice parade. I hope you can make it longerWhat are they sitting on?

author: Martin.M
author_rank: Frequent Contributor
timestamp: June 04, 2014, 06:27:29 pm
content: a R+S SMLR HF GeneratorI am collecting old glowing test gear.greetingsMartin

author: Martin.M
author_rank: Frequent Contributor
timestamp: September 03, 2019, 05:44:56 pm
content: Quote from: robrenz on June 04, 2014, 06:25:16 pm212, 213, 214, 221 + 222
Megger Major Insulation tester - Page 1
Forum section: electronics / testgear

author: Puffie40
author_rank: Regular Contributor
timestamp: September 03, 2019, 04:10:11 pm
content: I picked up a 1960's Megger Major. It is a 1000 volt, hand crank insulation tester. It is in pretty good shape for its age.where can I find a manual for it? about the closest I could find is some general info about the older models fromhttp://www.richardsradios.co.uk/meggers.html

author: Gyro
author_rank: Super Contributor
timestamp: September 03, 2019, 04:56:43 pm
content: You might want to try asking inhttps://www.vintage-radio.net/forum/forumdisplay.php?f=36
New for 2019 UNI-T UT89XD meter teardown - Page 1
Forum section: electronics / testgear

author: 001
author_rank: Super Contributor
timestamp: August 29, 2019, 12:39:01 pm
content: Any opinions?It looks like DTM0660 design like UT139C and Anengs but WTF about continuity flash light?Video is herehttps://youtu.be/cf44_EhtJkM

author: Hydrawerk
author_rank: Super Contributor
timestamp: August 31, 2019, 03:50:48 pm
content: No autorange.Unpopulated sparkgaps on the PCB.

author: 001
author_rank: Super Contributor
timestamp: September 01, 2019, 02:20:36 pm
content: Quote from: Hydrawerk on August 31, 2019, 03:50:48 pmYea! It`s real meterWho needs autorange now? Are EEs drive cars with automatic gear? Automatic gear for kids only

author: Mr. Scram
author_rank: Super Contributor
timestamp: September 01, 2019, 04:02:29 pm
content: Quote from: 001 on September 01, 2019, 02:20:36 pmThat's not just obvious trolling but lazy trolling too.

author: 001
author_rank: Super Contributor
timestamp: September 02, 2019, 07:34:41 am
content: Quote from: Mr. Scram on September 01, 2019, 04:02:29 pmWhy so agressive? Manual or DIRECT selectors are common interface for PROFESSIONAL applications from trucks to laboratory grade voltmetersThe main advantage for DDMs is CONSTANT tolerance for measurment cycle

author: Fungus
author_rank: Super Contributor
timestamp: September 02, 2019, 08:01:41 am
content: Quote from: 001 on September 02, 2019, 07:34:41 amAneng V8 has both... auto ranges on the left, manual ranges on the right.

author: maginnovision
author_rank: Super Contributor
timestamp: September 02, 2019, 08:04:36 am
content: Quote from: 001 on September 02, 2019, 07:34:41 amMost of my meters, and most automatic transmissions, give you the option to auto range or manually select. You're clearly so biased you can't even see that. Autoranging is a FEATURE, and you can choose to use it or not most of the time.

author: 001
author_rank: Super Contributor
timestamp: September 02, 2019, 11:03:57 am
content: Quote from: maginnovision on September 02, 2019, 08:04:36 amNot for anengsCheck AN8002 meter. Autorange ONLY/ No way to manual range

author: Mr. Scram
author_rank: Super Contributor
timestamp: September 02, 2019, 11:27:02 am
content: Quote from: 001 on September 02, 2019, 07:34:41 amNo, TRY a little harder. We’re NOT going to reward such a half-assed attempt at a TROLL.
GIDEP access - Page 1
Forum section: electronics / testgear

author: maginnovision
author_rank: Super Contributor
timestamp: September 02, 2019, 08:26:21 am
content: I know this is probably pointless to ask but if anyone has access to GIDEP and could look up K8-4-892(for ESI RV726 cal or technical manual) for me it'd be much appreciated.
Clamps or clips for probing QFP, QFN etc.  Suggestions? - Page 1
Forum section: electronics / testgear

author: dicky96
author_rank: Regular Contributor
timestamp: September 06, 2019, 09:51:38 am
content: Hi guysHas anyone tried these, or similar?https://www.aliexpress.com/item/33039250212.html?spm=a2g0o.productlist.0.0.51321b78evJdw9&algo_pvid=ee90e604-220e-4f3b-a8ce-a0b08796b7ad&algo_expid=ee90e604-220e-4f3b-a8ce-a0b08796b7ad-0&btsid=edfb4d7a-aaf6-4e8c-a9b5-3ff46598f50c&ws_ab_test=searchweb0_0,searchweb201602_7,searchweb201603_52Any suggestions on safely using a scope probe on a QFP or QFN without running the risk of shorting adjacent pins and causing even more damage?rich

author: Noy
author_rank: Frequent Contributor
timestamp: September 06, 2019, 12:05:14 pm
content: Hi, i have two sets of these.They are great for soic, qfp (depending on the Pitch). But qfn? Qfn has no pins to clip on.You can solder thin wire to the pads..
HP859x specAn owners with sweeper, how do you normalize display? - Page 1
Forum section: electronics / testgear

author: tkamiya
author_rank: Super Contributor
timestamp: September 02, 2019, 04:42:26 am
content: I have HP8593L with HP8350B as well as plugin that goes to 26.5GHz. Say I set sweeper to go min to max frequency and feed it to HP8593L. My cables are certified to 26.5GHz. However, with loss and variation in output of sweeper, toward high end, there are bumps and "sag"s. There's about 10db difference.I have seen this done before. Using mathematical manipulation in specAn, make the trace appear straight. I can't find how to do this anywhere including manual.If anyone is familiar with this operation, would you please share your method?

author: Bicurico
author_rank: Super Contributor
timestamp: September 02, 2019, 06:53:10 am
content: Hi,My Siglent SSA3000X has TG and this comes with a function called "Normalize" to do exactly what you want.Also, I have been experimenting and implemented an error map compensation for my "VMA Simple Spectrum Analyser" software. This is available at this moment only for the SMA/NWT/D6/LTDZ range of devices.However, even with the current version of "VMA Simple Spectrum Analyser for HP/Agilent 859x Series" you can sort of do this, using the MATH trace.Feel free to visit my blog:https://vma-satellite.blogspot.comThe latest posts in my blog discuss this and show some insights.I might be addidng the error map/calibration functionality to the other versions of my software (Siglent SSA3000X, R&S CMU200/CRTU and HP/Agilent 859x Series).Regards,Vitor
Ebay 50$ spectrum Analyser with Tracking gen.  - Page 1
Forum section: electronics / testgear

author: RoadRunner
author_rank: Frequent Contributor
timestamp: August 19, 2019, 08:45:32 pm
content: I think there is no forum thread about this, so here it is. I hope link works for your location.https://www.ebay.de/itm/Simple-Spectrum-Analyser-D6-With-Trace-Generator-Tracking-Source-T-G-V2-032/113766559309I was just wondering is this of any use, and how they were to achieve this with such a little circuitry.Regards

author: thm_w
author_rank: Super Contributor
timestamp: August 20, 2019, 12:23:24 am
content: https://vma-satellite.blogspot.com/2019/04/new-simple-spectrum-analyzer-device.htmlhttp://alloza.eu/david/WordPress3/?p=542https://www.eevblog.com/forum/rf-microwave/d6-jtgp-1033-new-low-cost-spectrum-analyzer-with-tracking-generator/https://github.com/joseluu/D6_firmwarehttps://www.aliexpress.com/item/32957672887.htmlhttps://www.eevblog.com/forum/rf-microwave/138m-4-4g-sweep-simple-spectrum-analyzer-generator/msg2459715/#msg2459715Surprising amount of info posted in the ebay auction.

author: Bicurico
author_rank: Super Contributor
timestamp: August 31, 2019, 11:34:53 pm
content: Please check out my last 3 blog entries athttps://vma-satellite.blogspot.com/:https://vma-satellite.blogspot.com/2019/08/vma-simple-spectrum-analyser-for.htmlhttps://vma-satellite.blogspot.com/2019/08/error-mapping-smanwtd6ltdz-devices.htmlhttps://vma-satellite.blogspot.com/2019/09/checking-out-performance-of-siglent.htmlIt is actually quite impressive what can be done with the SMA/NWT (by BG7TBL and available at eBay), the D6 (available at AliExpress) and (not so much) the LTDZ (available at Banggood).The D6 and LTDZ are impressive for the fact that they feature two ADF4351, which means synchronous RX/TX.The SMA only has one ADF4351 so it does assynchronous RX/TX - as a result it is not possible to use a TG like functionality.Regards,Vitor

author: timber23
author_rank: Contributor
timestamp: September 01, 2019, 11:06:02 am
content: Hi Vitor,I read your blogposts about D6 and the other cheap spectrum analyzers. Regarding your last comparison between Siglent SSA3000X and D6: Which modifications did you perform on your D6? In another blogpost you mentioned some modification by David Alloza, but for me it is hard to find out, which of the many modifications really make sense, since there are several updates. Do you have a list of modifications to the D6 which are useful?Thank you.Best regardsAndreas

author: Bicurico
author_rank: Super Contributor
timestamp: September 01, 2019, 03:44:27 pm
content: I have not modified mine at all. The graphs I posted in my blog are of the original unit.I don't know what individual mods should be done, I just read the linked post and now a fellow user that successfully modified his unit.The reason I did not apply the mod on my unit:1) I did not want to have a unit outputting wrong results -> this is now fixed by the latest release of my software2) I wanted to have an original device for R&D of my software3) Some components required don't seem easy to obtain for me (SMD resistors and capacitors)Regards,Vitor
Power supply for electric motorcycle builds - Page 1
Forum section: electronics / testgear

author: mcf12
author_rank: Newbie
timestamp: September 01, 2019, 03:18:20 pm
content: Hey team. I've done my best searching, but can't find a good resource for this specific q: happy to follow any links to discussions I've missed!I'm trying to find a bench top PS that I can use for typical 3, 5 12v stuff, but also 72v-96v, maybe even 144v electric bike/motorcycle projects. context:http://nightshiftbikes.comhttps://www.instagram.com/nightshiftbikes/I don't need big amps for the high voltage stuff, but it sure would be great to be able to benchtest my bike and motorcycle drivetrains with the same unit as what I'm using for everything else. Any advice? Thanks! Matt
Hacking scope timebase to force/extract 10 MHz REF - Page 1
Forum section: electronics / testgear

author: randomOracle
author_rank: Contributor
timestamp: September 01, 2019, 08:46:10 pm
content: Hi everyone,One of the features that is still very difficult to get at a low price is the 10 MHz REF_IN, i.e., using an external signal generator and its reference/synchronization output to phase-lock the scope to the output of the signal generator. I recently bought a Siglent SDS2000X and was wondering if this scope or any other scope in the same price range can be hacked such that the 10 MHz REF_IN can be provided? Or extracted?According to the teardown:The relevant (?) clock gen is the ADF4360:https://www.analog.com/media/en/technical-documentation/data-sheets/ADF4360-7.pdfThis one at least has a REF_IN made for 10 MHz, so it must be generated somewhere. Therefore, I think we should be able to extract the 10 MHz from the scope or to provide it externally from the signal generator.Did someone ever look into this? Any help appreciated before destroying my scope ;-)

author: 2N3055
author_rank: Super Contributor
timestamp: September 01, 2019, 10:14:00 pm
content: If you don't mind me asking, what do you expect to accomplish with this? What is use case for you so built in timebase has to be synchronized to outside world, or that internal timebase is not accurate enough?The way I see it, your decision should be driven by clear benefits, or otherwise you might damage perfectly good scope for no real gain...My 2 cents..

author: David Hess
author_rank: Super Contributor
timestamp: September 02, 2019, 01:07:50 am
content: If you can find the reference oscillator, then it should not be a problem.

author: DaJMasta
author_rank: Super Contributor
timestamp: September 02, 2019, 05:19:33 am
content: Yes to both, there should be a TCXO in a little can somewhere near the clock generation for the ADCs, it shouldn't be too tricky to find, but it may be worth probing the oscillator output to be sure it's the right one.... but I agree that it probably won't be helpful.If you really want to try to synchronize signals, you can always trigger off of a different input signal (like channels 1 and 2 for measurement and 3 for your trigger signal), and aside from internal frequency counter accuracy, I don't see a lot of benefits with lining up your sample clock with your input signal (or vice versa). If you're synchronizing multiple units, maybe, or maybe if you're trying to null out drift in the long term? The triggering method should fix the second, at least.
Fluke 867 vs 867B... anyone know the difference? - Page 1
Forum section: electronics / testgear

author: windsmurf
author_rank: Frequent Contributor
timestamp: May 04, 2019, 05:04:12 am
content: Hello I just obtained a Fluke 867, and wanted to dig into all of its functions with a manual... but I can't seem to find one online. I looked at the 867B manual and it does look identical. Also online pictures of the 867B screen seem to show a newer, more contrasty screen compared to my 867. Is the only difference the screen? Can I place an 867B screen into an 867 to get the better contrast?Any info greatly appreciated!

author: chard98
author_rank: Newbie
timestamp: May 04, 2019, 10:37:10 am
content: I have 2 867B meters. I know they made a 863 as well, but have not heard of just an 867. The contrast can be adjusted in the setup function. If you need manuals, they should be available on line. If not i have a complete set i can send you.

author: windsmurf
author_rank: Frequent Contributor
timestamp: May 04, 2019, 11:27:43 am
content: Maybe its just a different backlight in the 867 vs 867B hence "B"? Perhaps that's the thing that makes it look like mine is less contrasty compared to the 867B.I did download the 867B/863 Manual, and that has helped with its functionality. Thank you for offering though!The 867's backlight looks quite different from an 867B pictures I see online. Here's mine:

author: windsmurf
author_rank: Frequent Contributor
timestamp: May 19, 2019, 08:42:45 am
content: I ordered the $50 refurb screen for the 867B to install into my867.I had to trim some plastic on one side of the case to fit the 867B screen.It works! But I found out 2 things:The 867B requires some backlight at all times for the screen to be visible. So I believe the firmware on the 867B always runs with a lower backlight setting, and when the backlight button is pressed, the backlight gets brighter. On the 867, backlight is off completely until you hit the backlight button (see previous post).Below are pics of my 867 with the 867B LCD/backlight installed, with backlight on, then backlight off. Looks great with the backlight. Its pretty much unreadable with the backlight off.

author: sotos
author_rank: Frequent Contributor
timestamp: May 19, 2019, 08:49:10 am
content: Does anybody know why Fluke completely discontinued this meter.

author: bd139
author_rank: Super Contributor
timestamp: May 19, 2019, 09:53:16 am
content: No one makes pockets that size

author: windsmurf
author_rank: Frequent Contributor
timestamp: May 20, 2019, 06:51:07 am
content: Quote from: sotos on May 19, 2019, 08:49:10 amToo expensive to build. Its a great meter for a hobbyist I think, especially now at more reasonable used prices.They were superceded by a more multimeter-like 289, and more scope like 123.Interesting to note that the Fluke 865/867 that came before the 863/867B were made in USA. The latter were outsourced to Holland.Quote from: bd139 on May 19, 2019, 09:53:16 am

author: jazz57
author_rank: Newbie
timestamp: August 31, 2019, 03:30:17 am
content: Quote from: windsmurf on May 20, 2019, 06:51:07 amMy 867B was made in USA. Later serial numbers appear to be made in Holland.
MATRIX MPS-3005L-3 Power supply - Page 1
Forum section: electronics / testgear

author: Arnen
author_rank: Newbie
timestamp: August 30, 2019, 08:54:54 am
content: Hi.I would like to ask about the source MPS-3005L-3 from Matrix. Does anyone have experience with it? Would you recommend it? I have I have a chance to buy used source (5 years old) for half the price. I'm not sure if I would buy wrong? What if he leaves me soon?Thanks for your advice.

author: Arnen
author_rank: Newbie
timestamp: August 30, 2019, 08:27:33 pm
content: No one has experience?

author: Daruosha
author_rank: Regular Contributor
timestamp: August 31, 2019, 07:39:11 am
content: Well, what do you want to know? These are generic type bench power supplies with mediocre build quality. I have two of these supplies and they are what they are, they are also easy to fix/mod.If you want to buy a used one at half price make sure the transformer is toroidal and be prepared to re-cap each channel board with high quality/low ESR caps (I did it once I got it new).