hybridfree/eevblog-posts huggingface dataset:
Hantek1833C LCR - Page 1
Forum section: electronics / testgear

author: paul002
author_rank: Regular Contributor
timestamp: June 26, 2020, 09:01:12 am
content: Hi,Any body experience with this LCR meter?https://nl.aliexpress.com/item/4000906015652.html?spm=a2g0o.cart.0.0.3e9a3c00lLwJMU&mp=1

author: coromonadalix
author_rank: Super Contributor
timestamp: June 26, 2020, 09:13:27 am
content: seems nice ? maybe a known rebaded model ??

author: paul002
author_rank: Regular Contributor
timestamp: June 26, 2020, 10:11:52 am
content: The model look current. It is on the Hantek websitehttp://hantek.com.cn/products/detail/16180

author: bob91343
author_rank: Super Contributor
timestamp: June 26, 2020, 11:33:33 pm
content: I don't see any information on method of measurement, frequency, and such.

author: paul002
author_rank: Regular Contributor
timestamp: June 26, 2020, 11:48:14 pm
content: In the manual it states it can measure up 100 Khz in serial mode (low z) or parallel mode (high z)There are some videos on youtube, but my Chinese is not that goodMaybe I just try it not so expensive.Quote from: bob91343 on June 26, 2020, 11:33:33 pm

author: thm_w
author_rank: Super Contributor
timestamp: June 27, 2020, 12:15:22 am
content: Built in li-ion is a nice feature, LCR meters tend to kill batteries quickly.So many frequencies:"100Hz, 120Hz, 400Hz, 1kHz, 4kHz, 10kHz, 40kHz, 50kHz, 75kHz, 100kHz 10 typical test frequency (Hantek1832C) 7 typical test frequency "Low resistance and capacitance ranges seem good. Update rate seems slow on capacitance mode.I think the main concern is if they can meet the claimed accuracy specs given the internal components used (STM32 ADC alone seems to be used):

author: paul002
author_rank: Regular Contributor
timestamp: June 27, 2020, 01:09:47 am
content: Interesting tests. But the test does not really test the accuracy. I would like to know if this device is any good in measuring 1 to 100 pf and in the range of 0.1 till 1 uH. Compare it with a professional LCR meter. I now have a 30 $ blue LCR meter but it is no good at those low values.
Help identify mistery Philips PE 1600 - Page 1
Forum section: electronics / testgear

author: nisios
author_rank: Newbie
timestamp: June 26, 2020, 01:47:47 am
content: Hi everyone.Can anyone help identify this mistery Philips PE 1600 bench equipment?It looks to me to be some sort of power stabilizer maybe?I can see I giant transformer, and a couple smaller ones, what looks like some big strangely shaped capacitors and a small board on the back. It has an AC input and an AC output socket.Any help would be great, I can't find a thing online, and was hoping this could be some sort of isolatad power transformer thing of some sort.Many thanks.

author: nisios
author_rank: Newbie
timestamp: June 26, 2020, 01:59:47 am
content: I had some trouble because of image size, here are the photos from the back.

author: PA0PBZ
author_rank: Super Contributor
timestamp: June 26, 2020, 10:55:20 am
content: It looks like a stabilizer, I guess the plate says it all: wide varying input voltage, output 220V 0.1%Do you have any pictures of the guts (the inside)?Whether it is isolating or not is a good guess, maybe a multimeter can tell you more?

author: tv84
author_rank: Super Contributor
timestamp: June 26, 2020, 11:15:30 am
content: I remember seeing things like that when I was a child in neighbors houses. My family never had one...

author: TimFox
author_rank: Super Contributor
timestamp: June 26, 2020, 02:25:11 pm
content: Is it a ferroresonant stabilizing transformer, similar to those sold by Sola in US? If so, they are frequency sensitive (need to specify 50 or 60 Hz). However, the current production from Sola/Hevi-Duty is rated for 1% typical output regulation, while your nameplate shows 0.1%. Back in the day, Sola made plate/filament regulating transformers that simplified power supply design for vacuum tube circuits: as a graduate student, we inherited several pieces of custom vacuum-tube equipment made at Argonne Labs that used such transformers. As a clue, look for a large internal capacitor used to resonate a winding of the transformer, which is required for proper operation.
Hall of Fame for old school Rigol DS1000 series: E, D, U, CA, CD - Page 1
Forum section: electronics / testgear

author: pascal_sweden
author_rank: Super Contributor
timestamp: June 20, 2020, 06:34:31 pm
content: For the people who have nostalgia for the old school form factor of the Rigol DS1000 series, I made a list of all the available models in this series.As you can see from my list below, there are some models in this series that you might not have heard about!Now is your chance to learn about these!We all know the venerable Rigol DS1052E: the entry-level digital oscilloscope that took the market by storm many years ago.This oscilloscope can be easily hacked to the Rigol DS1102E which is the 100 MHz version.Most people will also know that there is a variant in this series with a built-in Logic Analyzer: Rigol DS1052D and Rigol DS1102D.But there are many other variants in the Rigol DS1000 series that all have the same old school form factor.There is a cheaper version for universities: Rigol DS1072U and Rigol DS1102U, which have only 512K/16Kpoints of memory.There is a high-end version that goes up to 300MHz and that has a 2GSa/s sample rate: Rigol DS1302CA.There is a very old version that has only a sample rate of 400MSa/s but that surprisingly has a Logic Analyzer: Rigol DS1102CD.

author: pascal_sweden
author_rank: Super Contributor
timestamp: June 25, 2020, 07:00:06 pm
content: Are there any other models that I missed in this series with the same form factor? (Besides some bandwidth variations in the same sub series)
Test and Measurement Tips for Displayport 1.3 - Page 1
Forum section: electronics / testgear

author: salvagedcircuitry
author_rank: Regular Contributor
timestamp: June 24, 2020, 09:27:04 pm
content: This may be a bit audacious for a personal project, but I'm considering designing a 5k resolution embedded displayport LCD controller.The LCD panel I chose is a non-standard 3:2 aspect 5k panel, so using an off-the-shelf LCD driver board from alibaba will likely not work.This is my first foray into high speed design, and I realize high speed = high bandwidth = $$,000. What I am wondering is if I can get away with using an older oscilloscope to measure the signal integrity of displayport 1.3.DP1.3 rise time (10-90%) = 50 picosecondsAccording to the equation: Fknee = 0.5/RT(10-90%). 0.5/50ps = 10ghz.With a 3% target accuracy with a maximally flat response: 1.4*Fknee = 14ghzI will need ~14ghz bandwidth, further confirmed by Keysight and teledyne lecroy's suggested 13ghz bandwidth for DP1.3 or eDP1.4-eDP1.4a.Would oscilloscopes like the Agilent DSO81304B, 91304A or Tektronix TDS6154C be suitable for measuring signal integrity for displayport 1.3? Would I need to use something more modern like an Infiniium V-series or Rohde & Schwarz RTP134 / RTP164, which have direct plugin support for displayport 1.3 / 1.4?This is a personal project for now, but I may decide to sell some in the future depending on the results. I realize high speed teat gear is aimed at large corps, and does not exactly share hobbyist price tags, but I'm trying to determine if it's worth picking up some old iron or renting a new piece of gear for a few months.Thanks for any input guys! Much appreciated.

author: nctnico
author_rank: Super Contributor
timestamp: June 24, 2020, 09:43:01 pm
content: You'll need dedicated silicon to drive displayport anyway so start by finding a chip which matches your requirements to drive displayport and follow the layout guidelines to the letter.
Relevance of Rigol MSO/DS2000A and Rigol MSO/DS4000 - Page 1
Forum section: electronics / testgear

author: pascal_sweden
author_rank: Super Contributor
timestamp: June 20, 2020, 07:38:38 pm
content: Are these oscilloscopes still relevant today?How come that they are still sold at such high prices?

author: TurboTom
author_rank: Super Contributor
timestamp: June 21, 2020, 01:57:04 pm
content: Are you getting paid for starting as many Rigol-related threads as possibleSorry if that sounds disrespectful, but I'm just curious.

author: pascal_sweden
author_rank: Super Contributor
timestamp: June 24, 2020, 06:46:55 pm
content: I believe that my question is very fair.Note that I am also asking a lot of questions about Siglent here on this forum, so I am unbiased, and have no particular preference for either Rigol or Siglent.
How can I count pulses with a DSO5102P - Page 1
Forum section: electronics / testgear

author: oldiemotors
author_rank: Newbie
timestamp: June 23, 2020, 10:22:04 pm
content: I need to count the number of pulses generated by the vehicle speed sensor on a Harley Davidson for one revolution of the wheel. When I connect my scope I can see the pulses being generated as I spin the wheel, but it is difficult to watch my mark on the tire and visually count the pulses at the same time. Just wondering if I can place my scope into acquisition mode, spin the tire once, stop the acquisition, and then go count the pulses. Or is there an even better way like counting the number of triggers? Any ideas?

author: Kean
author_rank: Unknown
timestamp: June 24, 2020, 11:17:39 am
content: Use a reflection sensor (cheap on ebay) and a strip of white/shiny tape on the tire. Feed that into your scopes second channel to use as a reference.
Rigol MSO 5000 post trigger delay - Page 1
Forum section: electronics / testgear

author: pmendiuk
author_rank: Contributor
timestamp: June 22, 2020, 09:27:09 pm
content: Hello,I am wondering if the Rigol MSO 5000 can do post trigger delay? I would like to do a simple edge trigger and then specify a delay before capturing data (XXX ms). I've had other scopes that had this ability but I don't see anything like that in the trigger or acquisition menus.Thanks

author: 2N3055
author_rank: Super Contributor
timestamp: June 22, 2020, 10:12:27 pm
content: RTFM.It is called horizontal position. It can be set several ways.Seriously, take time and read manual. It us complicated instrument, and Rigol has some terminology that differs from classic parlance..
Questions about RF test equipment - Page 1
Forum section: electronics / testgear

author: kisleini
author_rank: Newbie
timestamp: June 22, 2020, 03:11:44 pm
content: I'm looking into purchasing some RF test equipment so that I can do some design work at home. My current job doesn't offer any RF design opportunities and I was thinking that this might be my only way to get into the design field (and out of test engineering).There are some spectrum analyzers with tracking generators on Amazon for $5k, but I've never used GOWE or RIGOL products before. I was hoping that someone on here would have some advice.

author: nctnico
author_rank: Super Contributor
timestamp: June 22, 2020, 03:16:28 pm
content: Add Siglent to the list. I recommend getting a VNA (network analyser); it is a more versatile tool compared to a spectrum analyser although VNAs are typically less sensitive compared to spectrum analysers. OTOH a spectrum analyser with a tracking generator has limited use. For example: if you want to create an antenna matching network then a VNA will tell you the complex impedance of the antenna and calculating the matching network is easy. With a SA+tracking generator you only know the antenna isn't optimally tuned.

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: June 22, 2020, 07:43:53 pm
content: If you tell us what type of RF stuff you wish to experiment with or develop and what frequencies you are planning to deal with. Maybe someone could point out what equipment is appropriate.There is a lot of old equipment that can outdo the stuff you mentioned at far less cost.

author: Grandchuck
author_rank: Super Contributor
timestamp: June 23, 2020, 02:08:05 pm
content: As mentioned, a bargain VNA is a no-brainer. Also, the frequency is important to know. RF can mean 1 MHz, 1 GHz, 10 GHz and so on. The cost and complexity go up as frequency does. What is your general target?
Cleqee test leads - P1050 or P1050-1 - Page 1
Forum section: electronics / testgear

author: petemate
author_rank: Regular Contributor
timestamp: June 21, 2020, 01:08:51 pm
content: Hi guys, I was looking into buying some test leads(4mm banana plugs with safety shroud). I have previously bought some Cleqee P1050 from Aliexpress for around 10 USD for 5 pcs. The quality is good, although the plastic is a bit china-like. I noticed that they have a new version, P1050-1, which is a bit different, but also rated for less current. The P1050 is rated for 15 or 20A(if I remember correctly), the P1050-1 is only rated for 10A. Yet, they are more expensive. Do you guys know the difference between these test leads? The only thing I can see is the CAT rating that is listed for the P1050-1, but not for the P1050.Cleqee P1050:https://www.aliexpress.com/item/4000065038783.htmlCleqee P1050-1:https://www.aliexpress.com/item/32887928125.htmlCleqee used to have a fairly good english web page(by Chinese standards), but it has been shut down due to too much traffic(as far as I can understand from the translated chinese message, that is).What are your thoughts? I took one P1050 apart and the internal construction is identical to that of the P1050-1. Only difference is the creeoage to the "split" in the plastic cover, which is much larger on P1050-1 than P1050. Could this be the only reason for the CAT rating? What about the difference in current rating?Thanks!

author: BILLPOD
author_rank: Frequent Contributor
timestamp: June 22, 2020, 12:37:47 pm
content: Good Morning Pete,I got the P1503D set, a while back, and I've found them to have some handy accessories, and overall aren't as good as my Probemasters, but the accessories made them worth whatever I paid, which I see is now around $20.

author: petemate
author_rank: Regular Contributor
timestamp: June 22, 2020, 08:23:16 pm
content: Hi Bill, thanks for your reply! I have noted that they do have some nice-looking probe kits, but thats gotta wait for another time. Right now I only need test cables
Ono Sokki CF-6400 FFT Analyzer - Page 1
Forum section: electronics / testgear

author: arno
author_rank: Contributor
timestamp: May 23, 2019, 07:11:22 pm
content: Dear folks,some years ago I could rescue a Ono Sokki CF-6400 4-channel 100 kHz FFT analyzer from the dumpster, even with all manuals included.As far as I can see the unit still works quite fine and is still very useful for me as an audio-enthusiast, except for the battery (all settings are lost after re-power).Has anybody got more information on that unit? The schematics could be quite interesting.Also, the 'operating system' is stored on three EPROMs labeled as D27C040 (I put some tape onto them because the stickers got loose). I think it might be a good idea to do a backup, what do you think?You find some pictures attached.Thank you very much!

author: precaud
author_rank: Frequent Contributor
timestamp: May 24, 2019, 01:35:04 pm
content: If you have the manuals, you probably have more info on it than anyone elseIf you plan on keeping it, backing up the EPROMs is probably a good idea.

author: z80tw
author_rank: Contributor
timestamp: January 31, 2020, 05:31:14 pm
content: I got one CF-6400 FFT analyzer recently and have been looking for the user's & GPIB manuals for a while.but no luck so far.I will try to use PC to communicate with CF-6400 if I can find the GPIB manual(or GPIB command list).

author: arno
author_rank: Contributor
timestamp: April 28, 2020, 04:09:22 pm
content: Dear all,sorry, I missed the last reply. If you are still in need of the manual, I could scan it after the lockdown (I'm currently in home office without a proper scanner).Also I could dump all the EPROMs.73 de DL2SSB

author: z80tw
author_rank: Contributor
timestamp: June 15, 2020, 02:13:24 pm
content: Yes,I still need the manual!I have replaced the Lithium battery.I used Tadiran TL5903(2400mAh/ AA size/ 2 pins) for the original Tadiran TL-5135(1700mAh/ disk/3 pins).Let me know if you need detail information.

author: z80tw
author_rank: Contributor
timestamp: June 22, 2020, 11:32:28 am
content: The Tadiran Disk type TL-5135 Li battery replaced by Tadiran AA type TL-5903 in my CF-6400.
S1210 EMI Pre-compliance Software serial code for DSA832E-TG - Page 1
Forum section: electronics / testgear

author: azemati
author_rank: Contributor
timestamp: June 21, 2020, 07:40:29 am
content: Hello friendsI need a license code to activate the S1210 EMI Pre-compliance Software for PC in Spectrum Analyzer DSA832E-TG (RIGOL).How do you think I can find this activation code?S1210 EMI Pre-compliance Software serial codeThank you for your advice me
Does the Rigol 831 have a hack? - Page 1
Forum section: electronics / testgear

author: coinmaster
author_rank: Contributor
timestamp: July 30, 2017, 03:04:40 am
content: I need the Rigol 831 and I'm at the edge of my budget as it is so I cannot afford the upgrades even if I wanted to.I know the 832 is hackable but I don't see anything for the 831. Does it exist?

author: nidlaX
author_rank: Frequent Contributor
timestamp: July 30, 2017, 03:55:31 am
content: Quote from: coinmaster on July 30, 2017, 03:04:40 amYou have to buy the DP831? What are the features you need?

author: coinmaster
author_rank: Contributor
timestamp: July 30, 2017, 04:21:27 am
content: Most of my designs require a +/- 15v supply with a wide range of currents but I also need a 6.3v supply capable of 10A+ which unfortunately doesn't seem to be a thing.So it looks to be that the best plan is to buy a couple Rigol 831s and parallel the 8v sections to make a 6.3v 10A supply.I need tight regulation in general.

author: TurboTom
author_rank: Super Contributor
timestamp: July 30, 2017, 08:21:51 am
content: If you want to go for Rigol power supplies, I'ld recommend to get the DP832 for the +-15V, albeit at 3A max (in comparison to the 2A of the DP831 -- hope this will suffice) and have a separate DP811 for the 6.3V@10A (will supply up to 11A). I've got these two PSUs (besides some "el cheapos" and a few HP boat anchors) and have "improved" both. I guess this would be possible or the DP831 as well. I'm quite happy with the Rigol PSUs, I never expected that numeric input of the voltage/current would be so convenient, having had to turn knobs beforehand...Btw, I never really got used to PSUs with coarse/fine adjustments, anytime prefer a single ten-turn pot (or digital keypad, even if its arranged ridiculously as on the DP8xx series)!Cheers,Thomas

author: coinmaster
author_rank: Contributor
timestamp: July 30, 2017, 01:53:42 pm
content: Hmm you may be right, but ouch what an expense, the DP811 is $600.Are you sure it supplies up to 11A? It says 10A in the specs.

author: czecht
author_rank: Newbie
timestamp: June 20, 2020, 08:17:56 pm
content: I'm looking to upgrade everything there is available for my DP-831.Does anyone out there done this or can point me to the right ;lace to go to - I appreciate it very much!Thanks guys!
Sweep on Agilent / HP 8563E  not smooth all the time   - Page 1
Forum section: electronics / testgear

author: hafrse
author_rank: Regular Contributor
timestamp: June 17, 2020, 06:20:39 pm
content: I have acquired a used 8563E , I noticed that sometimes the sweep (/or screen update ?) is not that smooth all the time, this happens on different spans.For example, if I reset the instrument, full span is 26.5 Ghz, the sweep from left to right goes smooth but sometimes it stops for a fraction of a sec and continues . However, no error codes are reported. i can say for every 10 sweep cycles, 1-3 cycles it reacts as described above .Any experience of this instument and behaviour ?Many thanks for any information

author: 1Ghz
author_rank: Unknown
timestamp: June 18, 2020, 05:39:07 pm
content: I've also experienced it on my 8563E. I think it's normal behavior.QuoteSource:https://groups.io/g/HP-Agilent-Keysight-equipment/topic/70902714#102493

author: jjoonathan
author_rank: Frequent Contributor
timestamp: June 19, 2020, 12:15:44 am
content: It's normal. CAL > IF ADJ will turn it off if you want.

author: hafrse
author_rank: Regular Contributor
timestamp: June 20, 2020, 05:44:21 am
content: Thanks for all answers, it worked fine after disabling the IF auto align.
Aneng 618C Digital Multimeter - Page 1
Forum section: electronics / testgear

author: Johnno
author_rank: Newbie
timestamp: June 18, 2020, 12:59:29 pm
content: RE: Aneng 618C Digital MultimeterHi,Just came across the ANENG 618 (models A, B and C) "Smart Touch" DMM on the AliExpress website.It appears to be new enough that I can't see any reviews on the web, or mention of it on this site.Looking forward to a review somewhere that covers the pros and cons.Thanks.

author: ResistorRob
author_rank: Regular Contributor
timestamp: June 18, 2020, 03:29:39 pm
content: Actually was already mentioned on this site.Here is a link to it...https://www.eevblog.com/forum/testgear/aneng-618c-dmm-image-fail/

author: Johnno
author_rank: Newbie
timestamp: June 18, 2020, 11:46:37 pm
content: Thanks for the link.
ZD-985 Repair trick (videos) using Anemometer - Page 1
Forum section: electronics / testgear

author: Segasonicfan
author_rank: Newbie
timestamp: June 17, 2020, 08:33:33 pm
content: Hi everyone,I made some ZD-985 repair videos thanks in part to the help of older posts on this forum. Specifically, I wanted to share a cool trick for cleaning out the nozzle, and that is if you swap the hoses on the pump you can get to blow air out instead of sucking it in.Hopefully this helps someone else out:
GDS-1054B extremely dim screen - Page 1
Forum section: electronics / testgear

author: Antonio90
author_rank: Frequent Contributor
timestamp: June 17, 2020, 06:40:16 pm
content: Hello everyone.I just received my new GDS-1054B. Powered it on to see if it worked, fumbled around the menus and options a bit and did the probe compensation stuff with the 4 included probes. Then I powered it off and went to study for a few hours.I then downloaded the latest firmware, put it in a usb key to upgrade and plugged it in before powering on the scope. It didn't boot into the interface while the usb light kept flashing for a few minutes, so I powered it off, took out the usb key and back on. The GW INSTEK logo appeared bright as before but then the backlight dimmed a lot and it has stayed like that.The scope works, but the screen is extremely dim. I can see the waveforms well enough if the room is dark, but the "help" menu with it's grey background and black text is almost imposible to read no matter what, and I could read it just fine before.I have upped the brightness in the "display menu", upgraded the firmware to 1.27, and downgraded to 1.12 to no avail.Any ideas about what could be done?

author: nctnico
author_rank: Super Contributor
timestamp: June 17, 2020, 07:06:35 pm
content: Did you follow the safe update procedure? If not then try that first.

author: Antonio90
author_rank: Frequent Contributor
timestamp: June 17, 2020, 07:31:18 pm
content: I updated it as specified in the instructions from GW INSTEK website:https://www.gwinstek.com/en-global/products/downloadSeriesDownNew/959/130But it seems like the screen backlight might be dead, it doesn't light up anymore. The scope powers on, and lighting the screen very closely with my smartphone's flashlight reveals that it actually works (it kind of reflects the shapes that should be visible). However, it's completely black.Oh well. I suppose shit happensThanks for helping anyway

author: nctnico
author_rank: Super Contributor
timestamp: June 17, 2020, 07:59:32 pm
content: Time to return it indeed...

author: Fungus
author_rank: Super Contributor
timestamp: June 18, 2020, 01:25:15 am
content: Bad luck.
Topward 7045 Oscilloscope - BNC attached to front panel? - Page 1
Forum section: electronics / testgear

author: Didi
author_rank: Newbie
timestamp: June 19, 2020, 07:18:30 am
content: Hi,I've recently acquired this rather nice 40Mhz Topward 7045 (looks to me a bit like Trio Kenwood). Both channels were not working at the start.After reseating some connectors, ch2 is now working, ch1 only pos is working but no signal. Reason was easily found: the connection to the BNC is broken. However, as I started to take it apart and wanted to remove the front bezel for cleaning, I have a problem with the BNC connectors:* the BNCs are screwed from the inside* the plastic bezel seems to be screwed from the front to the metal bezel (see image 3, screw left from BNC)* the BNCs for the channels are soldered to the main PCBAny good ideas on how to remove the front bezel? Just unsolder both channels and resolder them later? It's a bit cramped in the corner where ch2 is so I'm hesitating.TIA,Didi

author: Didi
author_rank: Newbie
timestamp: June 19, 2020, 11:55:50 am
content: OK, so I decided to just spray some Tuner600 into the pots, solder ch1, be done with it and see how it looks. Still have no idea how to remove the front panel for a thorough cleaning :-(For the sake of TEA, I included 2 more photos..
Labview NXG5.0 Instrument Driver for Siglent SDG1032X? - Page 1
Forum section: electronics / testgear

author: ADJohnson
author_rank: Contributor
timestamp: June 17, 2020, 03:41:20 pm
content: There is an Instrument Driver detected and installed for my SDS1104X-E scope but I can't seem to find one for Labview NXG 5.0 for the AWG. There is one for Labview but I believe these are not compatible - it needs a specific NXG Instrument Driver.Does anyone know if there is one available or if you have managed to get this working with an Instrument Driver perhaps share how? I can send SCPI commands successfully through simple VISA queries.ThanksAndrew
Advantest r3132 test port levels and poor sensitivity. - Page 1
Forum section: electronics / testgear

author: jry
author_rank: Newbie
timestamp: November 23, 2014, 07:40:06 pm
content: I have a R3132 with poor sensitivity ..at least -30dbm low.Fails the calibration and RF selftest ...cal signal too low.Found a document on the advantest group that goes through the second LO alignment.In there it shows the 2nd LO output at the sampling port at roughly -8dbm ( picture of SA output of the port shows -18dbm but had a 10db attentuator in line )Looked at mine and see roughly -20dbm on a power meter showing a -12dbm difference which may be due to the 2nd LO buffer MMIC being defective.WOuld liek to see if anyone has verified the levels on a functional r3132 .Looks like there a two 1st LO sampler SMA ports ( one may actually be used for the TG option ) and one for the 2nd LO mentioned above.There are other unused SMB ports which may be of value in troubleshooting if there was some information on their function.Would be great to get a maintenance or service manual for this unit but it appears they never made it out of the factory.Thanks for the help in advance.

author: jc81382
author_rank: Regular Contributor
timestamp: February 02, 2016, 11:05:47 pm
content: Hi,Any chance you were able to figure anything out?I am also having an issue running the Self Cal and get a 807 Error. I also Fail the RF Self Test.Thanks

author: fozzyvis
author_rank: Regular Contributor
timestamp: July 16, 2017, 04:46:17 pm
content: @jc81382: same question to you...Did you fix yours?Dieter

author: tconil
author_rank: Newbie
timestamp: June 17, 2020, 06:23:35 am
content: HiSame problem, same question !Did you fix this issue ?ThanksThierry.

author: fozzyvis
author_rank: Regular Contributor
timestamp: June 17, 2020, 09:50:45 am
content: Hi Thierry,Two moves, a home renovation and two children later... Haven't spent any more time with it I'm afraid. It is still standing glouriously unused on the shelf....
NI 488.2 Version 15.5, looking for a copy - Page 1
Forum section: electronics / testgear

author: volvo_nut_v70
author_rank: Regular Contributor
timestamp: June 16, 2020, 04:11:02 pm
content: Hello;I am looking for the NI488.2 Version 15.5 which was the last version to support XP. I have a piece of legacy software that I need to get up and running.The original file was NI4882_1550f0.zip or NI4882_1550f0.exe.If any one can help me out that would be great!Thanks!

author: coromonadalix
author_rank: Super Contributor
timestamp: June 16, 2020, 05:15:19 pm
content: Try this ??https://www.ni.com/fr-ca/support/downloads/drivers/download.ni-device-drivers.html#327636

author: digi
author_rank: Contributor
timestamp: June 16, 2020, 10:02:12 pm
content: They have NI-VISA 15.5 available, which I think includes 488.2:https://www.ni.com/en-us/support/downloads/drivers/download.ni-visa.html#306031
Manual for ONO SOKKI CF350 - Page 1
Forum section: electronics / testgear

author: drtube
author_rank: Contributor
timestamp: May 31, 2018, 04:49:52 pm
content: Hello,Does anyone have the manual for ONO SOKKI CF350 FFT Analyzer? I sent an email to ONO SOKKI but they didn't reply..Thanks

author: z80tw
author_rank: Contributor
timestamp: June 16, 2020, 04:23:34 am
content: You could download it from Ono Sokki web site:https://www.onosokki.co.jp/English/hp_e/c_support/manual/fft.htmJack
Rigol DG812 Function generator Software upgrade - Page 1
Forum section: electronics / testgear

author: sahko123
author_rank: Frequent Contributor
timestamp: June 16, 2020, 02:40:46 pm
content: I recently (but 5 minutes ago) uograded my DS1054z to a DS1104z using the software upgrades has anyone been able to do the same to upgrade the DG812 to a DG832?

author: tv84
author_rank: Super Contributor
timestamp: June 16, 2020, 04:47:11 pm
content: What about using the "search" button?https://www.eevblog.com/forum/testgear/new-rigol-16-bit-function-generators-dg800900-series/msg2420391/#msg2420391
Wanted - Agilent 8133A Service Manual - Page 1
Forum section: electronics / testgear

author: asenior
author_rank: Newbie
timestamp: June 15, 2020, 07:22:51 am
content: Hi Everyone! Does anyone have an Agilent 8133A service manual??? I just bought a broken unit to fix...

author: asenior
author_rank: Newbie
timestamp: June 15, 2020, 07:37:10 am
content: Don't worry - just found a previous post with a link. Couldn't work out how to delete this post...

author: alm
author_rank: Super Contributor
timestamp: June 15, 2020, 06:00:14 pm
content: Could you please post a link here to that post with the manual for the next person who comes along and finds this thread, then?
HP ESA-L1500A SA TG opinions - Page 1
Forum section: electronics / testgear

author: wd5jfr
author_rank: Regular Contributor
timestamp: June 13, 2020, 04:44:54 pm
content: I've been considering something like this because it goes to 1.5 GHz and covers ham bands thru 33 and 23 cm. ( I have an Agilent E6380A which skips 23cm/1240 MHz.) Use will be for sweep filters, check antennas and trouble shooting in the HF & VHF bands as well. What are the pros and cons? Also what are other not quite boat anchors to consider and not spend $1000.00 that have a reliability track record?I'd like to get the Siglent SSA3032 and could stretch my budget but have a hard time justifying the expense. Aside from its' features, specs, and size it has a 3 yr warranty and my credit card doubles manufacturers warranties. So in the end this might make more sense if I wasn't trying to be thrifty.One of my friends suggests considering a Rohde FSH3 instead of the Siglent???I should mention that I've had 2 different HP 141 & TG, an old Advantest can remember model but it wouldn't stay working, Anritsu MS2670A and now HP 8935. I'm nearly 79 so this will be my last SA if I can figure out which one meets my fancy.ThanksHank

author: Marcel G
author_rank: Contributor
timestamp: June 14, 2020, 06:20:42 am
content: Please don't buy R&S FSH 3 or 6.This device is the first portable that they released.Problems:1: Battery and circuit2: Poor display3: Small dynamic range4: Noisy trace with TG5: Phase noiseThe FSH 4 is a lot better in that respect, but no world wonder either.I had both devices (FSH 3.23 and 4.24) but will not buy them now.My advice forget that very small stuff but buy a bit bigger (the keysight Fieldfox series is an exception to this).I have an Agilent ESA E4411B now is nothing special but does not know above mentioned problems.I have no experience with the Chinese Siglent (plastic segment) Spectrum/Network analyzers.

author: wd5jfr
author_rank: Regular Contributor
timestamp: June 14, 2020, 04:30:21 pm
content: OK, thanks, I appreciate the help and candid comments. The Rohde FSH3 is off my list and will also check out the Agilent ESA E4411B and look for 50 ohms.ThanksHank
ANENG 618C DMM - Image Fail - Page 1
Forum section: electronics / testgear

author: Jay_Diddy_B
author_rank: Super Contributor
timestamp: June 14, 2020, 05:03:30 am
content: Hi,from the official ANENG store on aliexpress:That is apeak powerbattery so may be it is 10V.andThis really gives me confidence in the product.Regards,Jay_Diddy_B

author: indman
author_rank: Super Contributor
timestamp: June 14, 2020, 08:45:23 am
content: This is bullshit!Look what this professional multimeter can do!https://www.aliexpress.com/item/32880953626.html

author: Fungus
author_rank: Super Contributor
timestamp: June 14, 2020, 09:02:26 am
content: Quote from: Jay_Diddy_B on June 14, 2020, 05:03:30 amIt's par for the course for their marketing department, they've been doing it for years.Luckily for us we can do teardowns and stuff. The truth is out there.

author: AVGresponding
author_rank: Super Contributor
timestamp: June 14, 2020, 10:11:29 am
content: I'm confused, how does a data line overload a dmm, and why is it wired to a mains outlet..?Not to mention you now need an adaptor to go from a firewire to a mains outlet. I mean, what could possibly go wrong with that..?

author: floobydust
author_rank: Super Contributor
timestamp: June 19, 2020, 01:32:56 am
content: For the price point USD $26 I'm not sure what is the main feature. Series 618A,B,C do not have current or thermocouple temp measurement but seem to have a big display, be slim AAA batteries and no more rotary switch, which I've never minded."Zero FireWire Induction recognition" seems to sense hazardous live/neutral using one probe lead (E-field). Looking forward to trusting my life to that. "Dididi" alarm is three beeps. They really need to run the marketing ad past someone technical who speaks English.I don't see why it has to show its temperature all the time, and with two extra leading zeroes to further annoy you with this useless information 0024C. Frequency also, do I need to see 0060Hz all the time? The second LCD display seems to be a waste.

author: Fungus
author_rank: Super Contributor
timestamp: June 19, 2020, 09:11:56 am
content: Quote from: floobydust on June 19, 2020, 01:32:56 amLooks and form factor?
Issue with PSU Model TPM-3005 - Page 1
Forum section: electronics / testgear

author: nour
author_rank: Frequent Contributor
timestamp: June 17, 2020, 08:50:04 pm
content: Datasheet:https://www.twintex.com.tw/proimages/SZ_Datasheet/Twintex_Datasheet_DC_Power_Supply_TPM_201609.pdfI have bought Power supply model #TPM-3005.This model according to the datasheet(in the second page), can reach 36V/5A or 15V/10A!After inspection I found the unit can only reach 5.1A max for all the voltage ranges, If I try and set the output current over 5A it doesn't accept the change!I tried to disable any OVP and OCP but they were already disabled!Can someone confirm if it is some bug in the software or it is something that I don't understand or may be there are some hidden configurations that I can't reach and set

author: nour
author_rank: Frequent Contributor
timestamp: June 17, 2020, 10:15:28 pm
content: I was able to fix the issue, there was a range switch (High-low) under some buttons but it was written with a fade and small text that I failed to notice at once, it is now working fine!
uCurrent Gold box - Page 1
Forum section: electronics / testgear

author: Wimberleytech
author_rank: Super Contributor
timestamp: June 13, 2020, 02:17:40 pm
content: I received my uCurrent Gold today...YAY!Being a little bothered by the center of gravity while mounted in the box provided, I decided to 3DPrint a box with a lower profile.Here is a picture of RevA. I am thinking about putting a hole in the bottom to access the battery. I am printing a battery-removal tool at this very minute.I had clear filament spooled up...that is why it is clear. Looks OK to me. Maybe if I rev it I will print in grey.

author: Wimberleytech
author_rank: Super Contributor
timestamp: June 13, 2020, 03:53:37 pm
content: I guess I should have looked on Thingiverse before designing my own box. There are lots of them on the site!

author: MLXXXp
author_rank: Frequent Contributor
timestamp: June 13, 2020, 11:28:55 pm
content: Quote from: Wimberleytech on June 13, 2020, 02:17:40 pmTo lower mine, I just cut down the original box.https://www.eevblog.com/forum/crowd-funded-projects/current-gold-on-kickstarter/msg448208/#msg448208

author: james_s
author_rank: Super Contributor
timestamp: June 14, 2020, 03:37:56 am
content: It never even occurred to me to look to see if someone had designed one. I bought some of the boxes from the Australian supplier when I built mine, they're decent little project boxes and buying a dozen made the total cost pretty reasonable.What I'd like to find are some better binding posts that fit nicely. I really don't like those bare metal loudspeaker binding posts it uses, they're needlessly clunky and easily shorted against stuff.

author: Wimberleytech
author_rank: Super Contributor
timestamp: June 14, 2020, 12:51:13 pm
content: Quote from: MLXXXp on June 13, 2020, 11:28:55 pmThat is a good solution. My 3D printer is always begging me to print something, so the print solution was perfect for me.
Tektronix 2400 series scope U800 drop-in replacement - Page 1
Forum section: electronics / testgear

author: Jwalling
author_rank: Unknown
timestamp: June 13, 2020, 05:28:12 pm
content: Saw this on the Tekscopes@groups.io for you guys that are still playing with antiques. A drop-in replacement is being developed for these that has X-Y mode capability (Unlike the Thomas Lafay replacement)

author: Jwalling
author_rank: Unknown
timestamp: June 13, 2020, 05:30:28 pm
content: His reply to some questions:Quote

author: Galen
author_rank: Regular Contributor
timestamp: June 14, 2020, 07:35:06 am
content: Really good news.Another easy-broken part of the Tek24xx is the U400.

author: tggzzz
author_rank: Super Contributor
timestamp: June 14, 2020, 09:15:37 am
content: Quote from: Galen on June 14, 2020, 07:35:06 amYeah, I've had to replace one of those.There is a sgnificant difference, though, U400 is easily removed/replaced, but it is difficult to fabricate the correct form factor.
Fluke 111 spare parts - Page 1
Forum section: electronics / testgear

author: shakalnokturn
author_rank: Super Contributor
timestamp: May 13, 2020, 05:06:11 pm
content: I have a few Fluke 111 multimeter to try and repair, the electronics are all good and calibrated but they all have broken or missing knobs, some also have a damaged switch contact wheel assembly.I cant find any Fluke part numbering for the 110 / 111 / 112 multimeters does that mean they are throw-away units?Any other models using the same parts where the Fluke P/N is available to order from them?

author: dacman
author_rank: Frequent Contributor
timestamp: May 14, 2020, 01:19:07 am
content: If Fluke still sells the parts, the Knob comes with the Top Case (and so do the Terminals).

author: Electro Detective
author_rank: Super Contributor
timestamp: May 14, 2020, 09:14:31 am
content: You might be out of luck on that, hopefully notand someone pops a few specific part numbers your way sooner than later,and the separate bits are gathering dust in some dark scary deserted almost forgotten Fluke storage warehouse..ok, that's a bit of a dream or wishful thinkingbut perhaps someone with a 3D printer can knock up those parts, without having to buy the entire Top Case assembly,assuming 3D printers can whip up the tough plastic required of these moving parts,and you would need some sort of programmed template..?FYI I know just beyond zero about 3D printers, only info cobbled from questions asked at the local Jaycar electronics store,and convinced I won't ever consider buying one,but I noticed the plastic used looked like rolls of whipper snipper/line trimmer string, which I know first hand is tough stuff,so I'll take my leave on that there, wishing you best of luck either way

author: retiredcaps
author_rank: Super Contributor
timestamp: May 14, 2020, 06:49:03 pm
content: Quote from: Electro Detective on May 14, 2020, 09:14:31 am3D printing ...https://www.reddit.com/r/functionalprint/comments/b0fmjh/made_a_replacement_knob_for_a_broken_fluke/https://www.stlfinder.com/model/fluke-112-multimeter-knob-qmMviMJd/8622223/

author: shakalnokturn
author_rank: Super Contributor
timestamp: June 12, 2020, 04:11:24 pm
content: Thanks for your answers, 3DP could be an option (un) fortunately it's a pit I haven't dropped into yet.I've also considered making a mould from one of the broken ones I have then using that to make my own.Anyone out here attempted similar madness?How did you go about it?

author: retiredcaps
author_rank: Super Contributor
timestamp: June 12, 2020, 04:51:15 pm
content: Quote from: shakalnokturn on June 12, 2020, 04:11:24 pmSee if other hobbyists in your city offer a 3DP service for $$$. Some are 3D printing face shields for front line workers for free.
HP 11975a - Page 1
Forum section: electronics / testgear

author: NiaDebesis
author_rank: Frequent Contributor
timestamp: June 12, 2020, 03:37:42 pm
content: Hi,I have found this instrument sitting on one of my shelfs, and right know I can't take it to the lab to make some measuraments.I have powered it on with a sma load on the output and on the input, and I get the unleveld led.I think that is just because the "input signal" is too low and is practically noise that I trigger the ALC right?Sorry for the stupid question
Keysight 34465A capacitance issue - Page 1
Forum section: electronics / testgear

author: Grandchuck
author_rank: Super Contributor
timestamp: June 12, 2020, 02:17:13 pm
content: As shown in the attached screen capture, capacitance measurements can be rather unstable. This is an intermittent issue.Keysight told me: "R&D has seen this issue (intermittently). At the time they also changed power outlets to ensure the DMM was not sharing the outlet with other instruments, motors, or 3-phase devices. There was some improvement, but not a "resolution" as fluctuations continued to be intermittent.What did end up improving performance when measuring a "physical" capacitor was to use a shielded coaxial cable with the shield connected to the grounding screw on the rear panel of the DMM."Has anyone else experienced this?

author: voltsandjolts
author_rank: Unknown
timestamp: June 12, 2020, 03:05:31 pm
content: The front panel current jack (10A/3A/whatever) can also be used as shield connection, bit more convenient than rear panel screw.OK, perhaps not perfect but works.
How to enable SIG ID (008) option for HP 856xE spectrum analyzer - Page 1
Forum section: electronics / testgear

author: 1Ghz
author_rank: Unknown
timestamp: May 29, 2020, 04:52:32 pm
content: WARNING: THIS WILL VOID YOUR WARRANTY ! ! ! (yes, really)NOTE: Without the 298 Mhz SIG ID oscillator hardware, SIG ID AT MKR and SIG ID -> CF functions doesn't work. Only SIG ID function works.Requirements1. HP 856xE spectrum analyzer2. Any GPIB adapter with command console software3. 4mm HEX wrenchProcedure1. Turn off the spectrum analyzer.2. Remove the spectrum Analyzer cover.3. Set the WR PROT/WR ENA jumper on the A2 controller assembly to the WR ENA position.4. Turn on the spectrum analyzer.5. Connect GPIB adapter to the spectrum analyzer.6. Send the magic GPIB command to the spectrum analyzer.Magic GPIB command: ZENTID 'HP<Model>,<Options delimited by comma>'For example: ZENTID 'HP8560E,005,006,007,008'7. Check the installed options from the spectrum analyzer. All is well, right?8. Turn off the spectrum analyzer.9. Set the WR PROT/WR ENA jumper on the A2 controller assembly to the WR PROT position.10. Secure the spectrum analyzer cover assembly.11.12. PROFIT!Search keywords: 8560E 8561E 8562E 8563E 8564E 8565E SIG ID 008 Signal Ident Signal Identification

author: hafrse
author_rank: Regular Contributor
timestamp: June 04, 2020, 10:06:28 am
content: Hello,Great information!Regardng the 298 Mhz SIG ID Oscillator, is it a sperate module ? what is the part number of this part/module?Thanks

author: 1Ghz
author_rank: Unknown
timestamp: June 04, 2020, 10:19:50 am
content: No, it's not a separate module. You need SIG ID enabled A15 RF board. Part number is 08563-60134.

author: hafrse
author_rank: Regular Contributor
timestamp: June 04, 2020, 04:14:32 pm
content: Thanks again for the information, I assume there is no way to enable it on A15 by hardware modification except swaapping the board ?Also, I need more information about the ZENTID command , suppose I have HP8562E with option 008 and I do a hardware uppgrade for some RF components (26.5Ghz RYTHM, attenuator,etc..) then executing ZENTID 'HP8563E' will change the model to HP8563E (-26.5Ghz)? do I need to execute ZENTID 'HP8563E' or ZENTID 'HP8563E,008' ?Thanks

author: 1Ghz
author_rank: Unknown
timestamp: June 05, 2020, 03:37:45 am
content: QuoteI didn't try it so I can't tell.QuoteYou need to execute ZENTID 'HP8563E,008'.

author: hafrse
author_rank: Regular Contributor
timestamp: June 14, 2020, 11:15:43 am
content: Hello,Will ZENTID 'HP8560E,005,006,007,008' works also on 8560EC ? thanks

author: 1Ghz
author_rank: Unknown
timestamp: June 14, 2020, 11:47:02 am
content: I'm not sure.But if the ID? GPIB command returns HP8560EC, I think you should execute ZENTID 'HP8560EC,005,006,007,008'.
HP4263a LCR Meter repair - Page 1
Forum section: electronics / testgear

author: henas
author_rank: Contributor
timestamp: June 12, 2020, 01:43:17 pm
content: Is there any diagram available for this unit? Even partial could be helpful.I found several electrolytic caps leaking and the majority had high ESR. I replaced the whole lot excluding two large ones.Now self test passes. Short and open compensation works fine too. I can measure resistors with good accuracy but known good capacitors measure about 20% lower with ESR of several ohms so the unit still has some problems. I noticed one of the daughter boards which hosts two flat-pack transistors is overheating. Especially several SMD resistors get really hot.Any help appreciated
very quiet buzzer on BM235 - Page 1
Forum section: electronics / testgear

author: bitter_mike
author_rank: Contributor
timestamp: June 11, 2020, 09:02:13 pm
content: I recently got an EEVBlog Brymen BM235 and I noticed that the buzzer on the continuity tester is very quiet. I've checked around the forums but I don't see any mention of this. I've replaced the batteries and such and that didn't affect the volume of the buzzer. Has anyone else noticed this? Could it be something defective about the buzzer? The thing is brand new.

author: Muttley Snickers
author_rank: Unknown
timestamp: June 12, 2020, 12:51:03 am
content: Somebody else had concerns with an inconsistent beeper level on their BM-235 and the recent thread is linked below for reference. Another member also posted a video on how to quieten a BM-231 which he considered too loud. These variations with the beeper level could be an indication of faulty piezo sounders or perhaps some other production problem.https://www.eevblog.com/forum/testgear/bm235-quiet-beeper/https://youtu.be/5D8jxj9chBo

author: bitter_mike
author_rank: Contributor
timestamp: June 12, 2020, 02:02:38 am
content: Thanks Muttley.If the buzzer is faulty, you think you'd see a higher than normal resistance of the buzzer element, lowering the current through it?

author: MosherIV
author_rank: Super Contributor
timestamp: June 12, 2020, 07:55:50 am
content: No if the buzzer is a piezo type, the resistance of piezo is very high be default.
Wavetek 950 series 957A service manual needed - Page 1
Forum section: electronics / testgear

author: Jay_Diddy_B
author_rank: Super Contributor
timestamp: June 12, 2020, 05:27:44 am
content: Hi,I am looking for the service manual for a Wavetek 957A Micro Source.(Picture from an eBay listing - Alltest Instruments)I understand that there is one manual covering all the 950 series.I have one that works, but the frequency is off and the output drops to zero over the higher frequency part of the band.Let me where to find this information.Regards,Jay_Diddy_B