hybridfree/eevblog-posts huggingface dataset:
Lab power supply - readback accuracy (NGM202) - Page 1
Forum section: electronics / testgear

author: hcglitte
author_rank: Regular Contributor
timestamp: October 22, 2021, 12:09:38 pm
content: Hi,I need some help to understand some datasheet parametes.Looking at the datasheet for Rohde & Schwarz NGM202, the readback accuracy for current is:±(% of output + offset): 10 mA range: < 0.05 % + 15 μAThe resolution in the same range is 10 nA.I interpret this as if my load is known to be 15 uA, the readback could actually display 0uA.What is the point of having 10 nA resolution when the offset is many orders of magnitude higher?Using the display to read a sleep mode MCU current would also not make much sense, given that interpretation I have.Any clarification is much appreciated, thanks.

author: Kleinstein
author_rank: Super Contributor
timestamp: October 22, 2021, 12:46:50 pm
content: High resolution ADCs (e.g. 24 Bit SD type) are pretty cheap today, but the guaranteed linearity is not that great. There are also offset errors, that may not be fully adjusted. 15 µA error specs with 10 nA resolution is still pretty unusual. Much of the error is likely just an offset that may however dift somewhat. So one can likely get much better readings than that - just no specs / calibration to support this.

author: exe
author_rank: Unknown
timestamp: October 24, 2021, 08:20:24 am
content: Higher resolution may help with relative measurement.Quote from: hcglitte on October 22, 2021, 12:09:38 pmYou mean a "deadband" when it doesn't show apparent negative values due to offset error? I'm not sure about this. It may or may not work this way. I'd say it depends on schematic and firmware. It seems this thing can sink current, so I'd expect it knows how to deal with "negative" currents. They may also put a conservative spec "just in case". But it's best to confirm with an R&S representative if this is really important.

author: hcglitte
author_rank: Regular Contributor
timestamp: October 25, 2021, 02:23:51 pm
content: Hi,No, I mean that it can show 15uA of error in both directions.For example: 30uA load could be shown as 15uA on meter.List price at Farnell is €4,850.00I can get it for 3,300 Euro. Wondering if I should jump at it.I like the logging capability and that it can sink current - as well as emulate a battery.Still a lot of money though.Not sure about alternatives which offers the same functionality for this price point.
Trimble GPSDO  ZYT_GPS-1 - Page 1
Forum section: electronics / testgear

author: samson
author_rank: Contributor
timestamp: October 19, 2021, 09:55:33 am
content: Hi there I got Trimble GPSDO ZYT_GPS-1 I don't know how to program the rs232 .I want to a just the time to local, also the back light to make it stay on longer.I am using usb to rs232 cable brand atten and running windows Vista.lady Heather only works for receiving only.Please if any one could help with this would be appreciate.

author: Kean
author_rank: Unknown
timestamp: October 23, 2021, 01:28:45 am
content: I would suggest you ask the seller for support.And please don't keep opening new topics with the same question.

author: samson
author_rank: Contributor
timestamp: October 23, 2021, 01:39:31 am
content: Tryed the suppler with no help

author: bingo600
author_rank: Super Contributor
timestamp: October 24, 2021, 08:34:19 am
content: From here (last pic)https://www.ebay.com/itm/143319767659

author: samson
author_rank: Contributor
timestamp: October 24, 2021, 10:34:56 am
content: Thank you, I have this but i don't know what program to use ?

author: Kean
author_rank: Unknown
timestamp: October 24, 2021, 04:03:59 pm
content: Quote from: samson on October 24, 2021, 10:34:56 amIf using Lady Heather, check the docs.http://www.ke5fx.com/heather/heather.pdfYou can use !U to send commands to the receiver. Or use !T to enter a built in terminal emulator direct communications.You can also do this at startup from the heather.cfg file using the @ keyboard scripting command.Alternatively, use another terminal program (I like PuTTY and RealTerm) to send the necessary commands ($UTC+n & $TZLCL), disconnect the serial port in that app, and then start Lady Heather. You'll probably need to resend the commands if you restart the device, unless it remembers the settings.

author: samson
author_rank: Contributor
timestamp: October 25, 2021, 02:40:53 am
content: Spoke to Kean, he fixed my problem with the RS232. One of the best guys I have spoken too with so much knowledge.Thank you!!!!
Logic cable for Keysight MSOX 3024T - Page 1
Forum section: electronics / testgear

author: philwong5176
author_rank: Unknown
timestamp: October 21, 2021, 11:28:24 pm
content: Hello:I have this scope and I need the logic cable. The manual said to get the N2756A, which costs $850.00 in Ebay. With this price I could get a real logic analyzer in Ebay.Question:Would older 16-channel Agilent cables work with this scope, or the N2756A is the only cable that works?Thanks.

author: rvalente
author_rank: Frequent Contributor
timestamp: October 21, 2021, 11:49:21 pm
content: Assuming you've the license for the LA (i believe people here have hacked this scope as well, search for it) maybe you could use the cloned probes from rigol mso5000, also available here in some topic

author: gslick
author_rank: Frequent Contributor
timestamp: October 22, 2021, 04:23:23 am
content: The MSO3000A series originally came with 54620-61601 logic analyzer cables before the switch to the newer style N2756A cables.$100 for a 54620-61601 cable set complete with grabbers in what appears to be as new condition is a reasonable deal most of the time on eBay. Sometimes you can find them for less, usually for more.Agilent 54645D/54622D/54641D/54642/54620-61601 Logic Analyzer Cablehttps://www.ebay.com/itm/313687054458Buy it Now US $100.00(Don't know anything about that particular seller, that's just an example).

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: October 23, 2021, 11:15:56 am
content: I use a 54620-61601 cable on my MSOX6004A . No problems whatsoever...Bought from this seller. Quick shipping and very good packing!https://www.ebay.com/itm/HP-54620-61601-Logic-Analyzer-Probe-Cable-54620-61801-54620-61601-/154618261114?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

author: gogoman
author_rank: Regular Contributor
timestamp: October 24, 2021, 03:41:36 pm
content: Quote from: ErikTheNorwegian on October 23, 2021, 11:15:56 amHello are the HP-54620-61601 compatible with a Agilent 6000 series scope

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: October 24, 2021, 10:14:06 pm
content: I don't know.. got a MSOX6004A.But this looks like the cable for you .https://www.ebay.com/itm/3x-Hewlett-Packard-HP-Agilent-logic-analyzer-cables-HP-1650-DSO-MSO6000-7000-/203656465170?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0
GPP-4323 remote access - Page 1
Forum section: electronics / testgear

author: jayk
author_rank: Regular Contributor
timestamp: October 29, 2021, 05:39:38 pm
content: Recently picked up one of these. I've only used it for a few days, but here are some thoughts:1. Very versatile. Nice to be able to parallel/series outputs one and two without any external connections (you can hear the internal relays click).2. Fairly quiet fan - this unit is replacing my two supplies, including a PSP-405 which has a loud fan that comes on 100% whenever the output current exceeds 2A. With outputs 1 and 2 sourcing 12V @ ~3A (total) I'm hearing the fan in the GPP-4323 come on and off periodically, but still at a fairly low level. We'll see what it's like at higher output currents.2. Nice display - a lot of information but clearly presented.3. Remote access via ethernet and USB.4. Great value for < $600US.Cons:1. The ethernet web-based access is very basic - really just a page you can use to enter SCPI commands and get the response. You're definitely not getting Keysight-style web-based remote access here.2. GW Instek provides a remote-access app, but it's an old NI VI and only seems to work via USB.3. Not sure about tech support... I emailed in a question a few days ago but so far no reply.4. When configured for parallel output on channels 1+2 it would be nice if it displayed the total current and power for both channels... instead it shows the output of ch 1 and 2 separately even in parallel mode.PyVisa seems to work fine with it:>>> import pyvisa>>> gpp=rm.open_resource("TCPIP::192.168.1.68::1026::SOCKET")>>> gpp.query(":SYST:VERSION?")'GW INSTEK,GPP-4323,SN:GEV864512,V1.17\nGW INSTEK,GPP-4323,SN:GEV864512,V1.17\nGW INSTEK,GPP-4323,SN:GEV864512,V1.17\nISET<x>:<NR2> Sets the value of current.\rVSET<x>:<NR2> Sets the value of voltage.\r x:1=CH1,2=CH2,3=CH3,4=CH4\rISET<x>? Return the value of current.\rVSET<x>? Return the value of voltage.\rIOUT<x>? Returns actual output current.\rVOUT<x>? Returns actual output voltage.\rTRACK<NR1> Sets the output of the power supply working on independent or tracking mode.\rBAUD<NR1> Sets the baud rate.\rRCL<NR1> Recall the setting data from the memory which previous saved.\rSAV<NR1> Saves the setting data to memory.\rBEEP<Boolean> Sets the beep state on or off.\rOUT<Boolean> Sets the output state on or off.\rLOCAL Return to lacal mode.\rREMOTE Into remote mode.(only for local mode)\r*IDN? Returns instrument identification.\rERR? Returns instrument error messages.\rSTATUS? Returns the power supply state.\r\nUndefined Header\n1.17\n'>>> gpp.query(":MEAS3:ALL?")'0.0000,0.0000,0.00\n'>>> gpp.write(":SOUR3:VOLT 1.0")17>>> gpp.write(":OUTP3:STATE ON")17>>> gpp.query(":MEAS3:ALL?")'0.0000,0.0000,0.00\n'>>> gpp.write(":SOUR3:CURR 0.1")17>>> gpp.query(":MEAS3:ALL?")'0.9996,0.0003,0.00\n'
Trimble GPSDO ZYT_GPS-1 - Page 1
Forum section: electronics / testgear

author: samson
author_rank: Contributor
timestamp: October 23, 2021, 01:23:02 am
content: Hi there, I got the Trimble GPSDO ZYT_GPS-1 I don't know how to program the rs232 .I want to adjust the time to local, also the back light to make it stay on longer.I am using usb to rs232 cable brand atten and running windows Vista.lady Heather only works for receiving only.Please if any one could help with this would be appreciate.
Siglent SDS2202X-E Roll Pk-Pk Bug? - Page 1
Forum section: electronics / testgear

author: 7thSenpai
author_rank: Contributor
timestamp: October 22, 2021, 10:27:29 pm
content: I believe there is a bug in roll mode. Incorrect pk-pk measurement. If anyone with the same scope could varify..Software Version 1.1.20 R3FFPGA Version 2021-03-17Conditions:-Set to 50ms/div in roll mode-Turn on pk-pk measurement-Attach probe directly to power supply leaving the PS on-Turn off scope.-Turn on scope.Seems to be affected in any roll mode (50ms/div or higher).The measurement gets corrected if you turn off roll mode and turning back on.

author: FrancisM
author_rank: Contributor
timestamp: October 23, 2021, 04:18:02 pm
content: Hi 7thSenpai,I'm with an SDS2352X-E of same software and FPGA version. I can confirm your findings about pk-pk measurement.I must honestly admit it's the first time I use roll mode.FrancisEDIT : I was too fast, seems my pk-pk value is the ripple wich maybe correct. I will test again with different voltage.

author: FrancisM
author_rank: Contributor
timestamp: October 23, 2021, 05:06:45 pm
content: Silly me, I was in Auto...Now I can really confirm !

author: 7thSenpai
author_rank: Contributor
timestamp: October 23, 2021, 05:54:50 pm
content: Hello FrancisM,Thank you.Roll mode is really great love the feature! The bug is not serious but it gave me a slight heart attack looking at pk-pk values next morning.
Very weird problem with the BM235 select button - Page 1
Forum section: electronics / testgear

author: aesteve
author_rank: Newbie
timestamp: April 25, 2019, 06:24:48 pm
content: Well, let's see if anyone can help me with this one.The problem is that the select button doesn't change between different modes of each wheel position. In voltage, it is stuck at AC, in resistance, it doesn't change to continuity, in diode/capacitance, it it stuck at capacitance. Every wheel position is stuck in one mode. The weird part is, it is not the button. The button works fine. When I push it, it beeps, then the screen blinks as if it is changing mode, but remains in the same spot. It isn't some sort of double pulsation, if I hold the button the light turns on. And, on top of that, when I discovered it, I went through all positions in the wheel, testing the button in each position, and found that it changed once and then got stuck in whatever mode it changed to.I've tried removing batteries for a long time (more than one day) but doesn't seem to reset it. Somehow, it remembers. Does anyone know a method to hard reset the meter? By the way, the firmware is revision D.

author: tautech
author_rank: Super Contributor
timestamp: April 25, 2019, 09:46:58 pm
content: Welcome to the forum.Try another set of batteries.

author: aesteve
author_rank: Newbie
timestamp: April 26, 2019, 07:33:28 am
content: Also tried that, nothing changed.

author: shakalnokturn
author_rank: Super Contributor
timestamp: April 26, 2019, 11:15:06 pm
content: Any chance a previous set of batteries may have leaked a little?The QFP I.C.'s are not far behind, some contamination there could cause all sorts of weird things.

author: aesteve
author_rank: Newbie
timestamp: April 27, 2019, 12:48:45 pm
content: Nope, it's not that either.I've noticed there is a jumper inside. I've tried shorting it and power it on. It doesn't seem to do anything.

author: zerox123
author_rank: Newbie
timestamp: October 23, 2021, 03:05:23 pm
content: I have exactly the same problem.Select button beeps and long pressing enables the background light. But does not change to DC when in AC mode.New batteries doesn't solve the problem.Anyone knows a solution?
LeCroy 44Xi and 64Xi? - Page 1
Forum section: electronics / testgear

author: perdrix
author_rank: Frequent Contributor
timestamp: October 23, 2021, 12:09:53 am
content: The two scopes use the same Front-End board, but slightly different Acquisition boards:913461-00 4 CH 600 MHz Acquisition Board913461-01 4 CH 400 MHz Acquisition Board913462-00 4 CH Front End Board 64/44XiDoes anyone know what the difference between the two Acquisition boards actually is?
HP3580 knobs - Page 1
Forum section: electronics / testgear

author: Ashuraya
author_rank: Newbie
timestamp: October 21, 2021, 08:31:22 am
content: Hi |I got 2 HP3580A audio spectrum analyzer. Both working fine, yet one of them has 3 broken knobs .I wonder if anyone has any idea where can i get such knobs .Thanks all

author: 25 CPS
author_rank: Frequent Contributor
timestamp: October 21, 2021, 04:03:44 pm
content: I don't know of a good source of knobs for these outside of finding another HP parts donor instrument of some kind that used the same style knobs as what you need there.Out of curiosity, since you've got both types of 3580 there, do you have a preference between the version with the little crank and mechanical assembly for the frequency selection or the one where it's done digitally and displayed in the LED readout?

author: Ashuraya
author_rank: Newbie
timestamp: October 22, 2021, 01:21:38 pm
content: Hi,thanks for your reply.if i couldn't find any i might try to customize some knobs but i'll do my best to find originals.as for which i prefer ?in fact I saw that the mechanical ha bit faster response when it comes to choosing frequency than that of digital .on the other hand The mechanical one has the 002 option which allows you to choose between balanced and unbalanced . actually between terminated bridged and unbridged. while the digital does not have this option.
LCR test fixture - Page 1
Forum section: electronics / testgear

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: October 21, 2021, 12:15:44 pm
content: I picked up an old HP 4271B (digitl readout one MHz LCR) for $20 at a Hamfest. After a week of putzing around I think it is fixed. It reads reasonable values on all ranges.Problems were mostly the relays.I was wondering if anyone has any suggestions for a Test Fixture. I wonder if one could be easily fabricated?I believe the normally grounded side of the in/out BNCs is isolated at the 4271 chassis, so I thought I would use a plastic box and mount four male bulkhead BNCs to that.Or would it matter if the BNCs were all common at this point? (metal box)I was thinking of using a big Zif socket for the wired components, one side being in and the other out, component could go into any in and out combo..Was also thinking of using a little SMD pad, like the ones on cheap component testers for SMD parts. Maybe fabricating a little lexan lid on a hinge to hold the components down.A setup with both could be easily made. Or is this too much surface area and make readings difficult?About the wiring, should I try to use coax in the fixture box or is this overkill?I was thinking of using a big Zif socket for the wired components, one side being in and the other out, component could go into any in and out combo..Was also thinking of using a little SMD pad, like the ones on cheap component testers for SMD parts. Maybe fabricating a little lexan lid on a hinge to hold the components down.A setup with both could be easily made. Or is this too much surface area and make readings difficult?About the wiring, should I try to use coax in the fixture box or is this overkill?Any comments would be welcomeWally KC9INK

author: Kean
author_rank: Unknown
timestamp: October 21, 2021, 12:26:44 pm
content: I posted some photos of inside my Tonghui LCR SMD test fixture in another thread. It may give you some ideas.https://www.eevblog.com/forum/testgear/measuring-small-capacitance-with-ks34465a-th2830/msg3755315/#msg3755315I can take photos of the THT test fixture too if you like. Pretty sure it will common the shields at the BNC entry to the box.The tweezers would extend the shields as far as possible. I am pretty sure the shields are all commoned at the LCR meter - they measure as such on my CKT5000 LCR.

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: October 22, 2021, 11:15:55 am
content: Kean:Thanks very much for the info and the pic.The only outer conductor that is grounded on the HP4271 B is the H Pot. The L Pot center conductor can be grounded or floating; controlled with an internal switch.I measured them and did consult the schematic also.So I imagine the closer to the DUT the various outer conductors are joined together, the better the reading.Although I don' know what the last 2 cm would mean.
Handheld 2-channels oscope-dmm (car diagnostic,arduino hobby) for about $100 ??? - Page 1
Forum section: electronics / testgear

author: dontknwmucboutanythng
author_rank: Newbie
timestamp: October 20, 2021, 04:49:46 pm
content: Hello,For about $100, is it possible to buy (new/used) a reliable handheld 2 channels oscilloscope with DMM? It will be used for Arduino type projects and car diagnostic.Thanks for your thought.

author: rvalente
author_rank: Frequent Contributor
timestamp: October 20, 2021, 05:08:56 pm
content: All the handhelds I've used up today were a fu***** piece of s***, I meanTektronix THS720pAgilent U1602BFluke scope meters, older gens up to 2010.They all suffer from terrible screens, slow GUI, lack of knobs to interact with, near to no features at all.I'm right now looking for a micsig, which seems pretty good but I've never used them

author: dophuc
author_rank: Contributor
timestamp: October 21, 2021, 04:55:38 pm
content: In the price range of 100$ to 120$ I recommend Owon HDS242, 2 channel oscilloscope 40Mhz + DMM (TRMS, 22000 counts...)https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/
RTB2000 course here in the forum that can help me get started? - Page 1
Forum section: electronics / testgear

author: Frank_MV
author_rank: Regular Contributor
timestamp: October 10, 2021, 10:41:48 am
content: Hello to all oscilloscope experts here on the forum,I recently got an RTB2004, is there some sort of course here in the forum that can help me get started?I am particularly interested in recording single operations with the "Single" button (as example spikes when turning a rotary switch) and recording I2C logs and displaying them from memory.So far I have used my analog HAMEG HM 303Thanks in advance,greetings,Frank

author: Omicron
author_rank: Regular Contributor
timestamp: October 10, 2021, 11:36:18 am
content: R&S makes nice user manuals:https://www.rohde-schwarz.com/cz/manual/r-s-rtb2000-user-manual-manuals-gb1_78701-402707.html

author: Frank_MV
author_rank: Regular Contributor
timestamp: October 10, 2021, 11:53:01 am
content: thanks, but of course I already have the user manual :-)But unfortunately it does not contain any concrete measurement examples.For someone who has years of experience with other digital oscilloscopes, it may be good as a reference book, but for beginners less ;-)

author: Frank_MV
author_rank: Regular Contributor
timestamp: October 13, 2021, 09:45:17 am
content: Nobody here knows that ?

author: tubularnut
author_rank: Regular Contributor
timestamp: October 13, 2021, 09:50:17 am
content: Check out the videos at R&SExample below.https://www.rohde-schwarz.com/uk/knowledge-center/videos/r-s-rtb2000-waveform-and-pattern-generator-video-detailpage_251220-505224.html

author: cmumford
author_rank: Contributor
timestamp: October 15, 2021, 03:20:47 am
content: If you have the History option then I recommend viewing "Segmented / History mode on R&S RTB2004 vs. Keysight MSOX1000". IMO this is a must when capturing I2C dialogs between devices.

author: Rich@RohdeScopesUSA
author_rank: Frequent Contributor
timestamp: October 15, 2021, 01:46:06 pm
content: Hi Frank_MV - we also have some short YouTube "how-to" videos on the RTB2000 here:https://www.youtube.com/playlist?list=PLKxVoO5jUTlsHhyVcpVaZJ-a1x6mK9Fj9-Rich

author: Frank_MV
author_rank: Regular Contributor
timestamp: October 21, 2021, 05:10:01 pm
content: Thanks for all your tips.Br,Frank
New FW after 4 years: Tektronix AFG3000 Firmware upgrade V3.2.4 - Page 1
Forum section: electronics / testgear

author: Zucca
author_rank: Unknown
timestamp: June 30, 2018, 09:58:37 am
content: FYI, released one year ago I did found out just today.QuoteI did the upgrade... everything went well.

author: Marchello
author_rank: Contributor
timestamp: July 02, 2018, 09:29:29 am
content: Thanks for info!My AFG3021B upgraded to 3.2.4 nowBRMark

author: Viktor347
author_rank: Newbie
timestamp: October 20, 2021, 08:52:06 pm
content: Hello, I can not download the firmware afg3021 from the Tek website, and I can not find it anywhere, please help me by sending it.

author: rodpp
author_rank: Frequent Contributor
timestamp: October 20, 2021, 11:51:31 pm
content: Please, see attached.

author: Viktor347
author_rank: Newbie
timestamp: October 21, 2021, 12:30:39 am
content: Big thanks)
TDS5054B pass all tests, SPC failed.. - Page 1
Forum section: electronics / testgear

author: profun
author_rank: Newbie
timestamp: November 03, 2021, 12:15:05 pm
content: Hello!I just bought an old oscilloscope: TDS5054B. No error was found after runing the Diagnostic self test, but it can not pass SPC. check the debug log prompt: "SPC returned an error in step trigger hysteresis",I don't know "trigger hysteresis" What does it mean, but it is certain that there is a hardware fault on the ACQ board.The debug log file does not describe the cause of the fault in detail, nor does it know which electronic component is damaged.I hope someone can help meThanks!
Siglent oscilloscope screen or boot issues ( 1102X-S , 1202X-E ) - Page 1
Forum section: electronics / testgear

author: wall@palcarm.com.au
author_rank: Newbie
timestamp: October 21, 2021, 02:41:01 am
content: Hi there, I have an SDS1102X-S that will not boot, or least the screen remains totally blank forever. About two or three years ago It actually replaced an SDS1202X-E that had developed the exact same problem. It seems to me impossible that both oscilloscopes would suffer the same fate and not be documented somewhere, but that does seem to be the case. Attempts to connect to the 1102X via the lan port didn't work. The link remains down no matter what I plug it into. An attempt to boot while holding down the power button while tapping the math key didn't work on either machine.Both machines used a common power circuit but there are various PC's, switches, routers, laptops and printers on the same circuit with no problems that I am aware of.So I have two questions. Does anybody know what is likely happening and how to resolve It?Secondly, since I couldn't buy another Siglent what would be a similar Rigol machine to the 1102X-s. While it was working it fitted my needs well.Thanks

author: TheDefpom
author_rank: Frequent Contributor
timestamp: October 21, 2021, 02:50:12 am
content: Is the power LED heartbeat working?Have you tried unplugging everything including flash drives and seeing if that changes anything?

author: wall@palcarm.com.au
author_rank: Newbie
timestamp: October 21, 2021, 03:01:28 am
content: I should have mentioned that for both machines the power button heartbeat works. At power on the illuminated buttons light up. For the 1102XS the illuminated buttons sometimes flash in sync with the activity light on the lan port. ( The link light remains off ) The symptoms remain the same regardless of disconnecting everything but power.

author: tautech
author_rank: Super Contributor
timestamp: October 21, 2021, 04:15:07 am
content: wall@palcarm.com.au .......this email doesn't work !Please send me a PM with your email.

author: wall@palcarm.com.au
author_rank: Newbie
timestamp: October 21, 2021, 05:05:55 am
content: My real email is wally@palcarm.com.au not wall@. ..

author: tautech
author_rank: Super Contributor
timestamp: October 21, 2021, 05:14:40 am
content: Quote from: wall@palcarm.com.au on October 21, 2021, 05:05:55 amEmail sent

author: tautech
author_rank: Super Contributor
timestamp: October 21, 2021, 07:22:00 am
content: Quote from: wall@palcarm.com.au on October 21, 2021, 02:41:01 amMaybe you can try this:https://siglentna.com/operating-tip/oscilloscope-hardware-reset/
EEV blog Brymen 786 meter - Page 1
Forum section: electronics / testgear

author: AVO8user
author_rank: Newbie
timestamp: October 20, 2021, 11:33:13 am
content: Hi there,Can anyone tell me how best to get one of these in the UK, should I buy from the website or is there an approved distributor in the UK. (Question prompted by someone on ebay claiming to be an approved reseller.)Thanks

author: Kean
author_rank: Unknown
timestamp: October 20, 2021, 12:01:38 pm
content: Yes, user Simon here is the UK distributorhttps://www.eevblog.com/forum/profile/?u=58His website:https://simonselectronics.co.uk/His ebay ID: simons_electronics

author: AVO8user
author_rank: Newbie
timestamp: October 20, 2021, 04:05:40 pm
content: Thanks for the quick reply
Convert Fluke 287 to 289 - Page 1
Forum section: electronics / testgear

author: Towlerar
author_rank: Contributor
timestamp: October 19, 2021, 11:42:21 pm
content: Just a curiosity of mine. I have a Fluke 287 and was wondering how difficult it would be to convert to the 289. The firmware is the same for both and the electronics are nearly identical. There was a short-lived meter called a Fluke 189II/AN that was the predecessor to the existing 287/289 meters. According to the attached picture from the service manual for that early meter, there is a set of model selector resistor dividers. Anyone know what effect these have?

author: BeBuLamar
author_rank: Super Contributor
timestamp: October 20, 2021, 11:21:31 am
content: Even if you can make the electronic identical it still not the 289. The 289 dial has 2 extra positions for low Z and Low Ohm. I think the best conversion is to sell the 287 on Ebay and buy a 289 on Ebay.

author: coromonadalix
author_rank: Super Contributor
timestamp: October 20, 2021, 02:29:08 pm
content: the same was apparently done and working for a 187 to 189 conversion, thread here ..... to my knowledge, never been done for a 287 to 289 ...

author: rvalente
author_rank: Frequent Contributor
timestamp: October 20, 2021, 03:43:50 pm
content: Quote from: Towlerar on October 19, 2021, 11:42:21 pmHello,Could you share this service manual?

author: Towlerar
author_rank: Contributor
timestamp: October 20, 2021, 03:54:57 pm
content: Quote from: rvalente on October 20, 2021, 03:43:50 pmhttps://github.com/Towlerar/Fluke-189II-AN-Service-Manual
Looking for a manual for a Fluke 710 Impedence Bridge, i.e. boat anchor - Page 1
Forum section: electronics / testgear

author: Stray Electron
author_rank: Super Contributor
timestamp: October 19, 2021, 11:33:18 pm
content: I spotted one of these in a surplus store today and I'm thinking of going back and picking it up. Does anyone know where I can find a manual for it?<https://www.radiomuseum.org/r/fluke_universal_impedance_bridge_710b.html>

author: bob91343
author_rank: Super Contributor
timestamp: October 20, 2021, 03:45:12 am
content: 1. That link brings up the stupidity of cookies and I won't go there.2. I don't know anything specific about the Fluke but I suspect it has a lot in common with the GR 650A.

author: Stray Electron
author_rank: Super Contributor
timestamp: October 20, 2021, 06:09:12 pm
content: I agree about the site, I won't use it either due to all of the cookie nonsense but it was the only place that I could find anything about the 710. I will take a look at the GR 650a and see if it appears to be similar. FWIW, I'm surprised at how difficult it is to find any documentation on some of the old Fluke stuff. Radiomuseum was the only place that I found any mention of the 710.OTOH I guess that I could list to 710 on Flea-Bay with the title RARE! :-)

author: bob91343
author_rank: Super Contributor
timestamp: October 20, 2021, 11:57:46 pm
content: The 'rare' adjective refers to items that either have fallen apart from age or that didn't sell well. I chuckle when I see it because that tells me I will probably do better without it.I don't know how old that Fluke is. The GR 650A was an early version (Heathkit made a clone of it) and the more modern one is GR 1650A. I own one, as well as the even more modern GR 1658.

author: bdunham7
author_rank: Super Contributor
timestamp: October 21, 2021, 12:03:57 am
content: No schematic or service manual, but here is a short operators manual.

author: bob91343
author_rank: Super Contributor
timestamp: October 21, 2021, 01:20:11 am
content: I see it's not like the GR, but resembles the ESI units. See if you can find an ESI manual for a similar unit.

author: Stray Electron
author_rank: Super Contributor
timestamp: October 21, 2021, 06:53:19 pm
content: Quote from: bob91343 on October 20, 2021, 11:57:46 pmBob, From what I've read, the Fluke dates from about 1964. I've played with the older manually operated ESI and GR bridges and I have own a Heathkit own. I also have a couple of GR 1657s and a 1658 Digidridges (I love those!)The Fluke is just for the sake of novelty.My favorites on FleaBay are the "Reconditioned" items. You know, the filthy ones with all of the broken knobs and smashed meters!

author: bob91343
author_rank: Super Contributor
timestamp: October 21, 2021, 08:58:56 pm
content: The 1658 is amazing. I would like more of that series but when they turn up they are out of my class.I recently got a ZM-11A but sold it, as it's not too user friendly and not too accurate. It does have a nice electrolytic leakage test but I have other gear for that.My 1650A is also for novelty, as it's outshined by the 1658.
Tektronix Pictbridge Printer taking over usb port! - Page 1
Forum section: electronics / testgear

author: luis garcia
author_rank: Regular Contributor
timestamp: October 19, 2021, 04:37:01 am
content: I enabled accidenally the Pictbridge Printer as output printer in my scope and now the instrument is not found anymore on the usb port through VISA. On the Device Manager a new device "Pictbridge" has replaced the old "Tektronix instrument" on the same usb port. As a consequence the usb port is not shown anymore on any Tekvisa app.I have tried to remove the Pictbridge printer on the scope but the button "Delete" is grayed out.So, i have a question: how to remove the Pictbridge printer configuration on the scope?L.
Hantek HDP4000 Series PSU's - Page 1
Forum section: electronics / testgear

author: WanaGo
author_rank: Regular Contributor
timestamp: October 19, 2021, 02:15:33 am
content: Hi All,Has anyone seen or tried out the Hantek HDP4000 series PSU's yet, like the HDP4324B for example.http://www.hantek.com/products/detail/17188I found a video here, in Chinese, but it at least shows it.https://www.bilibili.com/s/video/BV14R4y1H7KKI have had a Hantek PPS2320A PSU since 2013, and it has served me well. Cost me $100 USD at the time. I use all the functions all the time, but it has developed very weird faults and something is wrong with the controller as 90% of the time when pushing the Output enable button then output will jump to Max Voltage/Current, which leads to you blowing up what you have connected - so a bit of a pain. Time for something new.Hantek quoted me $500 USD delivered, direct. Rather expensive, but looking at the Hantek page above, it has some rather neat features.Thoughts?
Rigol Clearance  - Page 1
Forum section: electronics / testgear

author: ptluis
author_rank: Frequent Contributor
timestamp: October 18, 2021, 11:23:22 am
content: I'm planning on buying a new scope and found the Rigol Clearance center, does anybody have recent experiences purchasing used oscilloscopes from them? I don't find much info about it.

author: TurboTom
author_rank: Super Contributor
timestamp: October 18, 2021, 04:43:38 pm
content: I bought twice there, once with some consultation on the phone beforehand. I was treated very friendly and competently, so nothing to complain at all. IMO, most of the offers aren't too stellar bargain-wise, but of course YMMV. Especially considering that shipping expenses may be quite high while other dealers offer free shipping within the EU, the clearance center may not always be a good option. It may also be worth asking dealerships for a "special price". The two instruments I bought there were really well priced, saving me some 300...500 euros each. The condition of the instruments was immaculate, they clearly had been taken out of their boxes, but there weren't any traces of use to be found. I guess they had been used as display items on a trade fair or the like. But once again, price-wise you've got to compare well before you buy. Best of luck

author: ptluis
author_rank: Frequent Contributor
timestamp: October 18, 2021, 06:07:53 pm
content: Thank you for the reply. That's what I've been doing this days. I have found a difference in price between stores of about 100€ on same model. Rigol has this promotion for the ds1102z-e but I'm more interested in 200MHz bandwidth and since this model isn't hackable it's not my priority, otherwise I'll go for the ds1054z.

author: Fungus
author_rank: Super Contributor
timestamp: October 18, 2021, 06:27:52 pm
content: Quote from: ptluis on October 18, 2021, 06:07:53 pmThe 1202Z-E should be cheaper than the DS1054Z.

author: rsjsouza
author_rank: Super Contributor
timestamp: October 18, 2021, 07:33:17 pm
content: My experience is similar to TurboTom's, although I did this a while ago (six years) and I am located in the US. In my particular case, I got my DS4014 oscilloscope in very good condition with four new 500MHz passive probes for about US$1000 less than the retail price.

author: ptluis
author_rank: Frequent Contributor
timestamp: October 18, 2021, 11:25:01 pm
content: Quote from: Fungus on October 18, 2021, 06:27:52 pmYes it is and is supplied with 350MHz probes

author: ptluis
author_rank: Frequent Contributor
timestamp: October 18, 2021, 11:27:14 pm
content: Quote from: rsjsouza on October 18, 2021, 07:33:17 pmI realized that sometimes there are some "bonus" on the available equipment's. I haven't decided yet, I'm in between Siglent and Rigol
Hacking the Victor VC-921 again, with Arduino and Labview - Page 1
Forum section: electronics / testgear

author: donBaton
author_rank: Newbie
timestamp: October 20, 2021, 06:23:16 pm
content: EEPROM is modified, IR optocoupling is added.Protocol like thisis decoded by Arduino to more or less normal view:Code::-0.830 V DC:-0.739 V DC:-0.677 V DC:-0.617 V DC:-0.524 V DCNow it is possible to use Labview easily to get data from DMM.
Navtel 9440 Protocol Analyser software - Page 1
Forum section: electronics / testgear

author: ajross
author_rank: Newbie
timestamp: October 17, 2021, 05:01:16 am
content: Quick one - I picked up this protocol analyser today which runs off floppies. Unfortunately the disks are duff and I need to make new disks.Does anyone have the a source for the bootable disk images?Thanks!Al
Installation woes - Ultra Sigma - Page 1
Forum section: electronics / testgear

author: spiff72
author_rank: Regular Contributor
timestamp: October 17, 2021, 01:14:35 am
content: I know that Ultra Sigma is a cluster, but I can't even get it installed on my electronics bench PC.I have downloaded it twice - once from an international Rigol site and again from the US site. After extracting all the files, I run the setup.exe file (which requests admin rights), and then click a few confirmation dialogs, and when it starts to install I get the attached error message. If I say continue - it just pops up the same error message for another file, over and over and over...Does something else need to be installed BEFORE installing Ultra Sigma?

author: spiff72
author_rank: Regular Contributor
timestamp: October 17, 2021, 01:17:25 am
content: Oof - on a hunch, I moved the installation folder to my desktop, from a subfolder of my google drive folder (which appears as a removeable drive with the latest version of the Drive for Desktop.This time it ran just fine. Live and learn - don't install programs from my G: drive!
Mueller Bridge - Page 1
Forum section: electronics / testgear

author: torch
author_rank: Frequent Contributor
timestamp: October 16, 2021, 07:28:40 am
content: Any idea what a Mueller Bridge is?

author: Vgkid
author_rank: Super Contributor
timestamp: October 16, 2021, 07:40:43 am
content: Mueller bridges were used to measure temperatures(technically resistances) from usually 25ohm rtd's. They are similiar to a wheatstone bridge/kelvin bridge. They use a waidner-woll resistance decade for the adjustable resistance arms, below usually .1ohms.For more information google mueller bridge nbs.I can drop some links/documents when I get home in about 3hrs.
Agilent MSO6054A any chance of increasing bandwidth or sample rate ? - Page 1
Forum section: electronics / testgear

author: DC1MC
author_rank: Super Contributor
timestamp: October 17, 2021, 11:38:35 am
content: Hello everybody, I I will have soon some vacation days and weather is miserable and Covid rages, I wand to spend some time pimping my MSO6054A, in the excellent "hacking" thread I've activated all the SW options possible, but I was wondering if there are some HW assisted operations that could lead to an increased B/W and/or sample rate or the HW platform is on its limits.This will also may produce a sale for Leo B. pulser or convince me to stitch an avanlancher on asticksocket.Many thanks for any tips,DC1MC
Agilent 33321-60051 Attenuator for E4402b E4403b reparibility fix - Page 1
Forum section: electronics / testgear

author: harrimansat
author_rank: Regular Contributor
timestamp: October 15, 2021, 10:57:55 am
content: Hi have the oportunity to buy a cheap 4403b with attenunator errorIs reparaible? Any have photos of attenunator "guts"?Where I can find a servicen manual component lebel?ThanksRegards
Aim TTI AWGs - Page 1
Forum section: electronics / testgear

author: SignalArray
author_rank: Contributor
timestamp: October 14, 2021, 08:39:43 pm
content: Can anyone share their experience with AIm-TTi Arbitrary Waveform Generators?I'm looking to buy TGF4242 for my home lab.

author: nctnico
author_rank: Super Contributor
timestamp: October 14, 2021, 09:29:54 pm
content: Quote from: SignalArray on October 14, 2021, 08:39:43 pmDon't bother. I have tried the TGF4042 but it has serious issues where it comes to the frequency resolution. For example: something basic like producing a 10MHz and a coherent 1Hz signal is not possible. I ended up with a Tektronix AFG31000 series generator for more demanding tasks.

author: SignalArray
author_rank: Contributor
timestamp: October 14, 2021, 09:39:58 pm
content: thanks for the heads-up.of these cheaper AWGs- Rigol, Siglent, etc-which 150-200 MHz AWG has the least amount of problems?

author: nctnico
author_rank: Super Contributor
timestamp: October 14, 2021, 09:53:31 pm
content: Quote from: SignalArray on October 14, 2021, 09:39:58 pmProbably the Siglent SDG2000 series but I don't know what the max frequency is it supports. According to people on the forum the Siglent SDG6000 series (which supports higher frequencies) has several unresolved issues and Siglent isn't in a hurry to fix them.

author: tautech
author_rank: Super Contributor
timestamp: October 15, 2021, 12:18:38 am
content: Quote from: SignalArray on October 14, 2021, 09:39:58 pmSDG2000X models max out @ 120 MHz whereas SDG6000X models start from 200 MHz.Unfortunately the SDG5000 series with isolated channels have been discontinued and their top model was 160 MHz although they didn't have some of the fruits of the later X models.
Fluke ir3000FC - Page 1
Forum section: electronics / testgear

author: BeBuLamar
author_rank: Super Contributor
timestamp: October 13, 2021, 12:00:52 am
content: I tried several of them and one works but when the Fluke rep tried to update the firmware it's dead too. So anyone anyone has one that works? I called Fluke and have no definite answer

author: chard98
author_rank: Newbie
timestamp: October 13, 2021, 01:43:05 pm
content: I have a Fluke ir3000fc, and it works. I did have one that the software went wacky. What is your question?

author: BeBuLamar
author_rank: Super Contributor
timestamp: October 13, 2021, 03:38:52 pm
content: I bought 2 of them a couple years ago. One of them worked and the other didn't. It simply doesn't connect. I have the vendor exchanged the bad one twice and none works. So the vendor (Grainger) have a Fluke representative came and see me. The rep take my working one and upgrade the firmware and after that it doesn't work any more. That's it. We have none that works. I had to return all of them. One thing I noticed is that the one that did work has the lowest serial number. So I want to buy some but I am afraid that none will work. I called Fluke and asked and they said all of them work but obviously at least 4 of them I got didn't work.

author: chard98
author_rank: Newbie
timestamp: October 13, 2021, 07:25:03 pm
content: I read somewhere that they were having some firmware issues. And both mine came from Grainger as well. Could be a bad lot. I would keep trying with Fluke direct.

author: bdunham7
author_rank: Super Contributor
timestamp: October 13, 2021, 07:31:15 pm
content: What meters are you using with them and have you confirmed that they all work well with the USB/IR cable?

author: BeBuLamar
author_rank: Super Contributor
timestamp: October 14, 2021, 01:20:14 am
content: I tried 189, three 287's and two 289's. All worked with IR USB cable and Fluke View Form software.

author: J-R
author_rank: Super Contributor
timestamp: October 14, 2021, 04:00:00 am
content: The ir3000FC is really a terrible product. I sent mine back after a couple weeks of constantly discovering major flaws. If I remember correctly, you can't pair it to your computer and use it as a serial port like the USB version, so you can't run any software with it. With the Android/iOS apps you can't download or access previously logged data and the apps have a pretty long list of other major issues.Keysight runs circles around Fluke in this area in my opinion.
HP/AGILENT 4195ACal software - Page 1
Forum section: electronics / testgear

author: jfphp
author_rank: Regular Contributor
timestamp: March 16, 2016, 11:28:53 am
content: Hello,I am looking for the calibration software of the 4195A PN 04395-18004 with HP VEE or an older release running with HP Basic RMB (it would be easier to use ...). Thank you

author: rjyousey
author_rank: Newbie
timestamp: October 10, 2021, 04:58:06 pm
content: Did you ever locate this SW?

author: Xtremexp
author_rank: Regular Contributor
timestamp: October 10, 2021, 05:06:28 pm
content: I am also looking for it. Appreciate if someone can help us. Thanks!!

author: ElizatronicWarfare
author_rank: Contributor
timestamp: October 10, 2021, 09:40:41 pm
content: I know for certain it still exists out there, but the only place I know of is in Keysight's hands as they service old 4195As. How widely did they share the software back in the day?

author: fenugrec
author_rank: Frequent Contributor
timestamp: October 13, 2021, 08:30:13 pm
content: https://groups.io/g/HP-Agilent-Keysight-equipment/topic/24816108Haven't tested but certainly a good start.
Pace st325 profiling pc software - Page 1
Forum section: electronics / testgear

author: smart0187
author_rank: Newbie
timestamp: November 02, 2020, 11:08:54 am
content: Hello. I have Pace thermoflo st 325. But i lost pc whis Pace profiling software. Who can upload disk image, and send me link? I need create reflow profiles.

author: ms
author_rank: Newbie
timestamp: October 15, 2021, 04:35:41 pm
content: Hi. I'm also looking for the same software. Got a pace ST 350 rework station and missing a CD. Can someone help me with this please?
I built the AWA Capacitor DC Leakage Tester - Page 1
Forum section: electronics / testgear

author: duckduck
author_rank: Frequent Contributor
timestamp: October 13, 2021, 07:58:43 pm
content: I ordered the PCB and built this thing:https://www.antiquewireless.org/homepage/pcb-item-4/The PCB is USD25, delivered. It comes with an off-board schematic / wiring guide and a BOM (with Mouser part numbers). The AWA description claims that you can buy the rest of the BOM (minus case) for USD30. If you bought the cheapest components from lcsc.com maybe you could hit that price. I spent USD93 at Mouser (including USD24 on a steel enclosure from Hammond), and I had some things on hand already. I upgraded a few parts, and bought top-shelf brand name parts for the rest, so you could definitely do this cheaper.I ended up getting the test/discharge switch wired up upside down. Don't know how that happened except that I work on my hobbies after the rest of the family has settled down for the night.Review: It works. I like it. I own a good amount of "vintage" musical gear, so this will be a "nice to have" addition to the lab.EDIT:Sure would be nice to build a little test enclosure for the large 300V-500V capacitors, something like a Keithley 6104.
Rohde & Schwarz Logic Generator IGA - Page 1
Forum section: electronics / testgear

author: Omicron
author_rank: Regular Contributor
timestamp: October 13, 2021, 08:46:14 am
content: The R&S Logic Generator IGA seems to be some sort of digital pattern generator (see attached picture, snatched from an eBay listing). However, I can't find much information about it apart from a mention in a german text book "Handbuch Digitaler Schnittstellen". I got the one from the eBay listing as it seemed an interesting topic to investigate.Does anybody happen to have a user or service manual for this device?