hybridfree/eevblog-posts huggingface dataset:
LCR Meter for 1k USD - Page 1
Forum section: electronics / testgear

author: strahd_von_zarovich
author_rank: Contributor
timestamp: April 05, 2023, 06:57:10 pm
content: Hi everyone,I am planning to buy an LCR meter and I need your suggestions.I am going to use it for measuring low values of capacitance and inductance of surface mount passive components. I don't need any extra features like biasing, remote control etc. Measurements like ESR, ESL etc. will be pretty handy. I am not going to characterize components, so, high frequency measurements is not a must.I want to see if the capacitor is 1pF or 2pF. In that regard, 0.1pF resolution for caps, 1nH resolution for inductors, 0.1ohm resolution for resistance is enough for me.I won't use it for higher values , maximum values will be 1mF, 1mH and 10M ohm.Since, I am going to use it for very small packages down to 0201, are tweezer ones more practical?Thanks in advance.

author: nctnico
author_rank: Super Contributor
timestamp: April 05, 2023, 07:00:28 pm
content: For such small packages you'll need an SMD fixture. I'd look at bench LCR meters from Tonghui. Be prepared that the SMD fixture alone can set you back $200 to $300.

author: Bud
author_rank: Super Contributor
timestamp: April 05, 2023, 07:06:30 pm
content: So while high frequency is not a must, at what frequency you need to measure? Results will depend on frequency.
Siglent SDS 1052DL+ will not boot up - Page 1
Forum section: electronics / testgear

author: p4linnovation
author_rank: Newbie
timestamp: February 10, 2022, 11:00:30 pm
content: Hi everyone. I just purchased a Siglent SDS 1052DL+. I used it for about 10mins then powered it off. I came back the next day to use it again and it has been stuck on the boot screen ever since. I have tried doing the reset by pushing the Math button rapidly which did not work. I also contacted Siglent but I have not heard back. Does anyone know of any other ways to reset the scope? Thank you.

author: probert69
author_rank: Newbie
timestamp: February 12, 2022, 07:24:58 pm
content: The SIGLENT 1052 DL doesn't start for me either. Stuck at startup screen. I press the MATH button when I turn it on, but no results.

author: tautech
author_rank: Super Contributor
timestamp: February 12, 2022, 10:29:07 pm
content: Quote from: probert69 on February 12, 2022, 07:24:58 pmWelcome to the forum.We can recover DL+ easily however we don't have any DL recovery packages.

author: prolux
author_rank: Newbie
timestamp: March 01, 2022, 10:37:52 pm
content: Hi, first post so a little nervous,Hello everyone, I have a RSDS 1052DL that is stuck on the logo screen, it gets as far as clicking the relays and brings up the operational led's on the front panel, then just sits there .. forever. I connected it to a serial port to see what was going on and if anyone can tell by the output if it's the software hanging or a hardware problem.Kind regards,Mike.

author: tautech
author_rank: Super Contributor
timestamp: March 01, 2022, 10:42:48 pm
content: Quote from: prolux on March 01, 2022, 10:37:52 pmDoes it have a LAN socket, if so it's a DL+.DL+ models can be recovered with noninvasive USB recovery packages whereas older DL models cannot.PM us if necessary.

author: RKJolley
author_rank: Newbie
timestamp: April 05, 2023, 04:11:03 pm
content: Have used mine since 2017 and Now when I need it the most, it gets stuck in boot mode. Does anyone still have the recovery program?

author: tautech
author_rank: Super Contributor
timestamp: April 05, 2023, 07:32:47 pm
content: Quote from: RKJolley on April 05, 2023, 04:11:03 pmWelcome to the forum.PM us with your email and we'll get you up and running again.(got your earlier PM, need email)
Agilent 33220A 20 Mhz Function/Arb WF Gen : two questions - Page 1
Forum section: electronics / testgear

author: ytterligare
author_rank: Regular Contributor
timestamp: April 05, 2023, 02:45:11 pm
content: Hello there, my 2nd hand 33220A S/N starts with MY44*It runs firmware:While last available FW on keysight site is generically "2.07" build date 2009-08-24.I'm a bit confused whether mine could be the most up-to-date version available or not, since it reports also "2.06"...anyone can check his ? (Utility -> Test/Cal -> Cal Info)Also, anyone did replace the fan on the back and got the specs ? Mine is really noisy and would gladly replace it, say, with a Noctua or any other compatible silent Fan...TnxAndrea

author: gamalot
author_rank: Super Contributor
timestamp: April 05, 2023, 04:32:11 pm
content: I think yours has equipped the latest firmware.The serial number of my 33220A starts with MY43, the latest firmware version for it is 1.08, but as you can see there is also a 1.06 after 1.08.
Can you put two 150V eLoads in series to handle 300V? - Page 1
Forum section: electronics / testgear

author: Faringdon
author_rank: Super Contributor
timestamp: April 05, 2023, 12:37:44 pm
content: Hi,Can you put two 150V eLoads in series to handle 300Vdc?SDL1020X eLoad:https://siglent.co.uk/product/siglent-sdl1020x-e-programmable-dc-electronic-load/

author: coppercone2
author_rank: Super Contributor
timestamp: April 05, 2023, 12:38:18 pm
content: maybe

author: Pfriemler
author_rank: Regular Contributor
timestamp: April 05, 2023, 01:01:46 pm
content: I never would do that. Maybe in CV or CR mode, but never in CC - you put two current sources in series and get what?This can only work if the two loads are perfectly balanced, otherwise one device soon will see (much) more than 150V and get damaged.jm2c

author: nctnico
author_rank: Super Contributor
timestamp: April 05, 2023, 01:02:36 pm
content: If you like the magic smoke escaping from test equipment, then the answer is yes.

author: alm
author_rank: Super Contributor
timestamp: April 05, 2023, 01:17:11 pm
content: Quote from: nctnico on April 05, 2023, 01:02:36 pmI agree. For a more spectacular effect, add some disco lights that if you're lucky will suddenly turn off as a circuit breaker gets tripped by the shorted loads shorting the 300 Vdc source.

author: Pfriemler
author_rank: Regular Contributor
timestamp: April 05, 2023, 01:42:21 pm
content: OMG. I did not think about what can happen if a load is blown, but an internal meltdown leading to a 300VDC short cut is the most likely version. And if the first is gone, the other will follow immediatley.But I think that a suitable circuit breaker (even a well dimensioned short copper line will do) should always be a part of the setup...?btw: If two EL are to put in series or parallel (to balance the load) is a question of the used mode, isn't it?
RIGOL DG2000 function arbitrary waveform generator - Page 1
Forum section: electronics / testgear

author: simone.pignatti
author_rank: Frequent Contributor
timestamp: October 28, 2019, 06:27:15 am
content: For all those who do not like the design of the DG800 and DG900 series, today RIGOL presents the DG2000 series. Rigol DG900 and DG2000 have the same technical characteristics but a different design. Now the DG2000s can be stacked

author: simone.pignatti
author_rank: Frequent Contributor
timestamp: October 28, 2019, 06:49:12 am
content: I made the comparison table between DG2000 and DG1000Z series

author: Daruosha
author_rank: Regular Contributor
timestamp: October 28, 2019, 01:00:06 pm
content: I believe Rigol is spamming the market with many similar products. DS2000A vs DS2000E, DS1000z vs new 2 channel version, same arb gens 800,900 and now 2000! What's going on?

author: thm_w
author_rank: Super Contributor
timestamp: October 28, 2019, 10:49:53 pm
content: New management, that thinks they need to "cover" the entire market maybe?Anyway this appears to be identical hardware to DG800/900 with an added ethernet port. Still happy with the DG811 $280 + $3 ethernet adapterDG2052 price: 539 EUR $600 USD.

author: TurboTom
author_rank: Super Contributor
timestamp: October 29, 2019, 01:41:57 am
content: The DG800 / 900 PCB even features the LAN connector, though at an awkward position. My bet is a slightly modified main PCB in the DG2000 with the USB host moved to the front, the LAN directly accessible at the rear and that's basically it. Rigol didn't even appear to have used the opportunity to beef up the FPGA a little so the frequency counter will operate in parallel with two generator channels -- the manual still states that CH2 gets disabled when the frequency counter is active.IMHO -- this instrument is way too expensive for the performance it offers.

author: Wolfgang
author_rank: Super Contributor
timestamp: February 01, 2020, 10:55:22 pm
content: Quote from: Daruosha on October 28, 2019, 01:00:06 pmMy impression is that the case design of the DG800/900 is a flop. Nobody wants a part that cannot be stacked or you cannot put anything on top, not even a coffee mug. Remedy: see pictureFurthermore, they have 16bits, but phase noise is not as good as the classic parts DG1000Z.

author: Andrey_Ak
author_rank: Regular Contributor
timestamp: April 05, 2023, 08:30:28 am
content: Hello comrades!I want to purchase Rigol DG2052, are there any ways to hack it before DG2102?
HP 4396A Impedance Option 010 - Page 1
Forum section: electronics / testgear

author: bwussler
author_rank: Newbie
timestamp: April 06, 2023, 01:56:18 am
content: Looking into buying a HP 4396A but really want the impedance option it has at some point. I was wondering if anybody knows what it would take to upgrade that option later. Is there an additional internal card I need to acquire to use this functionality? Or is it just firmware upgrade and HP 43961A test fixture that I need. There is a manual that refers to firmware or higher then a certain serial range.https://www.ebay.com/itm/403910931951
Voltage sources/DAQs for characterising VCOs/OCXOs - Page 1
Forum section: electronics / testgear

author: philpem
author_rank: Frequent Contributor
timestamp: April 04, 2023, 12:45:43 am
content: Ayup!In a past life I worked on the hardware and software for industrial control kit. 4-20mA, 0-10V, that sort of thing. Occasionally we'd need do linearity and hysteresis tests by feeding in a variety of 0-10V ramps and measuring the process output. I'm finding myself needing to do something similar for a VCO design.At that place we had a fleet of Yokogawa GS210s and 7261s (precision DC voltage/current sources) which were great for this -- hook them up to a PC via USB, hook up a measuring instrument for the output, run a script on the PC to step through the various ramps. I've had a look at pricing but £1k+ is more than I'd want to spend for something I wouldn't use all that often.I've had a dig around elsewhere and discovered the NI USB-6009 DAQ, which has two 0-5V analog outputs with 12-bit resolution. That's probably fine -- but it'd be useful to have 0-10V and bipolar (+/-5V or +/-10V) ranges too. Analog-in isn't really necessary, I have other instruments for that.Does anyone know of something like the NI USB-6009 DAQ or the Yokogawa instruments, but with a wider output voltage range?Output current requirement would be a few milliamps at most, to drive a varactor diode or some kind of input stage.Update rate - once a second is fine, the settling time on the measurement will be longer.I've thought about homebrewing something out of a bandgap reference, some 12- 14- or 16-bit DACs, an amplifier stage and a microcontroller -- but that seems like hard work I'd rather put into my fancy RF designs, if there's some off-the-shelf kit I can use instead!Cheers-Phil

author: dobsonr741
author_rank: Frequent Contributor
timestamp: April 04, 2023, 03:39:24 am
content: Take a look at ADALM1000 and ADALM2000, from Analog Devices. Usual retailers carry. Not exactly what you want, but close. Maybe you just need a precision amp.
Hp 70000 system  ->> Hp 70206a Mono Display  R1-C1-S2 values - Page 1
Forum section: electronics / testgear

author: croma641
author_rank: Regular Contributor
timestamp: April 03, 2023, 09:29:19 am
content: I'm evaluating (= deciding whether to repair) a Hp 70000 system (severely damaged);I'm looking for the AC main filter diagram of the Hp display Hp 70206a (destroyed/melted).Can someone send me the schematic or the values of R1, C1 and S2?Thanks in advanceAndrea
AMP-70 Weird problems encountered in testing！ - Page 1
Forum section: electronics / testgear

author: YqHFXa01
author_rank: Newbie
timestamp: March 30, 2023, 05:06:24 am
content: Hi GuysI was recently testing a 100w power amp (AMP-70，https://www.diyaudio.com/community/threads/winfields-100w-dc-10mhz-1000v-us-amplifier.287023/) and according to JD's patch documentation, I built a flywire on the B side of the boardAs described in the picture Added List of known issuesNow as soon as the power is turned on, Q27, Q27, Q28, Q33, Q34 will be shortedI don't know if I need to disconnect or jumper the wires there in advance?Also, is this J7 jumpered correctly?Can anyone help me or give me some tips, thank you very much!

author: YqHFXa01
author_rank: Newbie
timestamp: March 31, 2023, 12:44:55 am
content: Sorry, I didn't describe the problem clearly.Update

author: YqHFXa01
author_rank: Newbie
timestamp: April 03, 2023, 07:06:03 am
content: The problem has been solved！
New Handheld 7" Touch Oscilloscope [JINHAN SMTO502S & SMT01002S] - Page 1
Forum section: electronics / testgear

author: DaneLaw
author_rank: Frequent Contributor
timestamp: March 27, 2021, 08:21:51 pm
content: 2 channel 7" Touch-Oscilloscope from JINAN model SMTO502S & SMTO1002/S with or without 1ch. 30MHz signal generator.At least 3 versions atm.(the S in the model name signifies models with signal generator, the 502S seems to have 5000mAh and the 1002/S 8000mAh batt.)SMTO502S60MHz 250MSas + 1ch. signal generator. 135USD. (incl, EU VAT)SMTO1002100MHz 1GSas 175USD (excl. VAT)SMTO1002S100MHz 1GSas + 1ch. signal generator. 205USD (Excl. VAT)"Jinhan" is well-known for these rugged small JDS-series oscilloscopes.https://www.google.com/search?q=jinhan+JDS+oscilloscopeBut their included multi-angle (off the shelf) stand bracketsure' its better than nothing..SMTO1002SDetails for SMTO502S.[SMTO1002 & SMTO1002S]They also have a more automotive orienated line that circles around scope+DMM.(ADO 202 & 204) (450 to 550US).https://tinyurl.com/naa9st93

author: VSV_electron
author_rank: Regular Contributor
timestamp: April 02, 2023, 10:51:20 pm
content: So far up to date there are basically no opinions, no reviews, nothing on this line of the scopes.Is there anyone out there who got one and uses it?There are thousands users of the similar form factor Fnirsi tablet scopes.
Anritsu MS2626A - Anyone have information on this model? - Page 1
Forum section: electronics / testgear

author: scopeman
author_rank: Frequent Contributor
timestamp: April 03, 2023, 02:06:08 am
content: Hello Group,I have an Anritsu MS2626A 9kHz-6GHz spectrum analyzer with a full range tracking generator. I have never seen any information on this unit anywhere. No operators manuals, no service manuals, nothing to be found. Does anyone on the group know any details on this unit as to operation/options/etc.It seems to be operationally very similar to the 856X and 859X of the same vintage, at typical quality RF spectrum analyzer. The only shortcomings I can see is the lack ofresolution bandwidths below 1kHz.Thanks for your time.SamW3OHM
Hantek DSO2D15 Osiloscope front usb port issue - Page 1
Forum section: electronics / testgear

author: liquidoxider
author_rank: Newbie
timestamp: April 01, 2023, 10:50:01 am
content: Hello I recenty bought Hantek brand osiloscope and I want to update frimware version to latest but when I plug the usb stick to front port, my ossiloscope didnt recognized usb also when I try connect ossiloscope via usb cable to my pc its show up on the screen but pc not recognizeing osiloscope .I have a laptop and there is no usb 2.0 port.Btw usb stick specs 16GB mem and I think its usb 2.0

author: mgroz
author_rank: Newbie
timestamp: April 01, 2023, 11:45:08 pm
content: There is a limitation on usb drive size. I used a 4 Gig formatted to fat32.

author: DavidAlfa
author_rank: Super Contributor
timestamp: April 02, 2023, 07:33:44 am
content: There's no such limitation! I normally use a 32GB drive.Just use fat32.
R&S URY-Z1 /Z2 probes - EEPROM investigation - Page 1
Forum section: electronics / testgear

author: tv84
author_rank: Super Contributor
timestamp: April 01, 2023, 04:03:07 pm
content: It seems there are a few members that want to play with the EEPROM of their R&S URV5 Millivolt probes.The EEPROM memory has a 1kB content (with a backup copy at offset 0x400), containing several (I think 7) tables with 16-bit or 24-bit values.I was asked to have a look at the CRC/checksum that R&S uses to validate the contents integrity, so that people could make some valid changes to the probes EEPROMs.The mechanism isn't a CRC16, it's a very simple 16-bit checksum (little-endian format) present at offset 0x3FA. To calculate it, one just has to do (no, it's not Python , and should be self-explanatory for someone who wants to patch his EEPROM):Code:byte[] eeprom_fileushort sum = 0;for (int i = 0; i < 0x3FA; i++)sum += eeprom_file;Console.WriteLine("Checksum: {0}", ~sum & 0xFFFF);Enjoy!
Problem with Siglent BODE II using SDS1204X-E and SDG2122X - Page 1
Forum section: electronics / testgear

author: bnz
author_rank: Regular Contributor
timestamp: April 01, 2023, 08:16:20 am
content: I use the Siglent SDS1204X-E and SDG2122X with latest software.I got strange looking results with BODE II when I use a span of about 100MHz (default settings apart of that). With small span of about 1MHz the plots did not look suspicious.I ended in feeding the same signal in both inputs of the SDS and got the attached plot, with a continuous increasing gain of about 15dB over the span, instead of the expexted flat line. I tried a simple tee as well as a power splitter, different inputs at the SDS, different cables, ... the plot remains the same.Is there an bug at the Siglent side, or is there some setting I can mess up?

author: tautech
author_rank: Super Contributor
timestamp: April 01, 2023, 08:26:08 am
content: Maybe this excellent thread can help:https://www.eevblog.com/forum/testgear/siglent-sds1x04x-e-bodeplot-ii-(sfra)-features-and-testing-(coming)/msg2453655/#msg2453655

author: bnz
author_rank: Regular Contributor
timestamp: April 01, 2023, 10:31:51 am
content: OK I found the issue(s).1. the chanle sampling the DUT input had the 20MHZ bandwith limiter enabled. Disabling that, the result, at least with the power splitter, was as expected. One can argue if that is a bug in BODE II, as Bode II controlls the inpus it should be aware of the bandwith limiter in conflict with the sweep span.2. Without limiter but spliting with a tee only, the plot looked nearly as wrong as before. Adding a further tee with a 50Ohm terminator, made things looking good. Well, with using probes, this issue wil not happen.
Koolertron 30MHz DDS Signal Generator PC Software - Page 1
Forum section: electronics / testgear

author: r042wal
author_rank: Newbie
timestamp: March 29, 2023, 04:00:26 pm
content: I have a Koolertron 30MHz DDS Signal Generator and I would like to install the PC software. There are two links on the Koolertron website pointing to the Amazon S3 server and neither of them work. I think I need the file DDS.rarDoes anyone have a private copy of this that they could publish for me? I have reached out to Koolertron support but have not received a reply as of yet.Thanks in advance!

author: coromonadalix
author_rank: Super Contributor
timestamp: March 30, 2023, 02:00:33 am
content: not sure if its a clone of the jds6600 ??https://joyiteurope-my.sharepoint.com/personal/onedrive_joyiteurope_onmicrosoft_com/_layouts/15/onedrive.aspx?id=%2Fpersonal%2Fonedrive%5Fjoyiteurope%5Fonmicrosoft%5Fcom%2FDocuments%2FJT%2DJDS6600%2FJT%2DJDS6600%2Ezip&parent=%2Fpersonal%2Fonedrive%5Fjoyiteurope%5Fonmicrosoft%5Fcom%2FDocuments%2FJT%2DJDS6600&ga=1download top left corner ??or open the casing and check for a pcb model ?

author: DRL
author_rank: Newbie
timestamp: April 01, 2023, 03:32:27 am
content: I believe that Koolertron is just a distributor, and your generator is a rebadged Feeltech. The Feelelec website is actually pretty OK, and you should be able to find a better manual and the software you want there under “Downloads”.http://en.feeltech.net/Good luck!
Can you use normal oscilloscope probes on a spectrum analyzer? - Page 1
Forum section: electronics / testgear

author: cvanc
author_rank: Frequent Contributor
timestamp: March 31, 2023, 01:53:03 pm
content: Hi all-Will using normal oscilloscope probes work on a spectrum analyzer?Thank you.

author: nctnico
author_rank: Super Contributor
timestamp: March 31, 2023, 02:03:44 pm
content: Assuming you intend to use a spectrum analyser with 50 Ohm inputs only:The High-z 1:10 probes: noBut Low-z high frequency probes (like the Tektronix P6156), which are designed to work with a 50 Ohm input, work well on a spectrum analyser but be aware of DC level limits

author: alm
author_rank: Super Contributor
timestamp: March 31, 2023, 02:39:31 pm
content: Many active probes, especially the higher frequency single-ended and differential probes, are also designed to work in 50 Ohm inputs, so should work fine assuming you can power them. Some manufacturers made/make separate probe power supplies that could be used to adapt their probes to a spectrum analyzer.You might want to put a DC block between probe and spectrum analyzers, since these probes are DC coupled and most spectrum analyzers do not like DC at their input.

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: March 31, 2023, 05:47:36 pm
content: I use 10 X Scope Probes on my HP 8935 Antenna Input for Spectrum Analyzer very frequently. It works well for relative amplitude,A lot safer for the equipment than using straight leads or a 1X probe.I do not think Calibration of the magnitude is accurate.

author: alm
author_rank: Super Contributor
timestamp: March 31, 2023, 07:29:49 pm
content: The attenuation will vary over the bandwidth, so while it will show a signal, just like holding a bare wire close to the signal source will show a signal, it won't be an accurate representation.
Resistance measurement methodology   - Page 1
Forum section: electronics / testgear

author: joniengr081
author_rank: Regular Contributor
timestamp: March 31, 2023, 09:48:22 am
content: Hi, I have fluke 175 handheld digital multimeter and I am interested to figure out the mechanism how the resistance is actually measured using fluke digital multimeter. There should be small amount of current flowing, the question is how much ? I guess there is shunt resistance which will be in parallel to the measurement device for example, if the measurement device is a resistor.

author: BeBuLamar
author_rank: Super Contributor
timestamp: March 31, 2023, 11:56:43 am
content: Basically the meter sends out a constant current and measures the voltage accross the resistor. The current changes with different ranges. I don't know how much current for each range but it's something that can be measured and find out.

author: Fungus
author_rank: Super Contributor
timestamp: March 31, 2023, 12:17:26 pm
content: Quote from: joniengr081 on March 31, 2023, 09:48:22 amThe meter has an internal shunt. Current is usually about 0.5mA but see the manual for exact specifications of this meter.(or measure it using another meter)
Siglent SDS2204X plus, X cursor tracking issue - Page 1
Forum section: electronics / testgear

author: imadjawad
author_rank: Newbie
timestamp: March 31, 2023, 03:03:56 am
content: Hi, New to the Forum here, having a problem with my SDS2204X plus, X cursor doesn't track but shows the measurements, Y works, is it a bug? BTW I upgraded it to 350MHz.thank you all!

author: tautech
author_rank: Super Contributor
timestamp: March 31, 2023, 08:23:37 am
content: Quote from: imadjawad on March 31, 2023, 03:03:56 amWelcome to the forum.It is customary to also report the firmware version used when reporting a possible bug as if you are on an older version this apparent bug may have already been rectified.Current version for the 06 HW is:https://int.siglent.com/upload_file/zip/firmware/Oscilloscope/SDS2000X%20Plus_V1.5.2R2_EN.zipIf you are using V1.5.2R1 this is appropriate for all but the latest 06 HW.https://int.siglent.com/upload_file/zip/firmware/Oscilloscope/SDS2000X%20Plus_V1.5.2R1_EN-2.zip
HP 3589A error 72 - Page 1
Forum section: electronics / testgear

author: wd5jfr
author_rank: Regular Contributor
timestamp: March 30, 2023, 01:38:03 pm
content: Can't find anything on line on what HP 3589A "error 72" is and what it affects and what might be the repair. Any info appreciated.Thanks Hank

author: tv84
author_rank: Super Contributor
timestamp: March 30, 2023, 01:46:25 pm
content: Again?? ?? ??Reported.

author: wd5jfr
author_rank: Regular Contributor
timestamp: March 30, 2023, 01:53:03 pm
content: Sorry double post, 82 year old brain fart. Tried but couldn't delete. Please delete. Thanks

author: joeqsmith
author_rank: Super Contributor
timestamp: March 30, 2023, 08:12:34 pm
content: I responded to your other post. Now see where you have asked again in the HPAK group for a third time but have changed the model from HP3589A to HP8935A. As I mentioned in your other thread, I wasn't aware of the 3598A posting numeric error codes. Maybe you have been asking about the 8935A all along but dyslexia got the best of you?
HP 3589A error 72? - Page 1
Forum section: electronics / testgear

author: wd5jfr
author_rank: Regular Contributor
timestamp: March 30, 2023, 12:25:19 am
content: Can't find anything on line on what "error 72" is and what it affects and if it's fatal. Any ideas appreciated. Thanks Hank

author: joeqsmith
author_rank: Super Contributor
timestamp: March 30, 2023, 03:49:26 am
content: Hank,I see you posted the same question twice on the HPAK groups as well but you provide no further details. Maybe start with when do you see the error? What symptoms are you seeing? What options are installed? Are you using an external reference, keyboard (other setup)? Did you check any of the LED codes?I don't remember the 3589A having any numbered error codes but I don't pay a lot of attention to it.
V-I analog signature display on KEYSIGHT DSOX1102G scope - Page 1
Forum section: electronics / testgear

author: IconicPCB
author_rank: Super Contributor
timestamp: March 28, 2023, 02:17:34 am
content: I am talking about setting up the scope , using the onboard sig genny, to display VI signature of components in an unpowered assembly.Usually done with a small transformer and current sampling resistor.The transformer provides a floating signal and the resistor a certain maximum current.The transformer can be replaced with a signal generator, with a floating output. At any rate galvanically isolated from the oscilloscope.PROBLEM: the onboard signal generator shares a common ground with the oscilloscope. Other than an external transformer is there a way to set up the scope to provide this ( analog signature analysis ) functionality?

author: IconicPCB
author_rank: Super Contributor
timestamp: March 30, 2023, 07:59:42 pm
content: No takers?

author: adam4521
author_rank: Regular Contributor
timestamp: March 30, 2023, 08:42:26 pm
content: I'm a bit puzzled about the original method if you are trying to plot non-linear components. Is there dc flowing through the transformer? Are you separately providing a DC voltage source and the generator/transformer setup provides the dynamic injection?Does the signal generator on the oscilloscope have DC offset you can use to set a bias voltage? Would that work for you?

author: IconicPCB
author_rank: Super Contributor
timestamp: March 30, 2023, 10:24:05 pm
content: No Adam,No DC involved in this method.It is a simple plot of V-I Lissajous figure.The problem is centred on a need for a common reference point for both the current sample ( Voltage across a resitor ) and voltage across the component or node in question.https://www.google.com/search?channel=fs&client=ubuntu-sn&q=octopus+curve+tracer+schematic
HP 5334A Field Upgrade Option 010 Ovenized Oscillator - Page 1
Forum section: electronics / testgear

author: ekoloski
author_rank: Contributor
timestamp: March 29, 2023, 06:36:11 pm
content: I recently stumbled across a rather old post inquiring if it is possible to retro-fit option 010 (Ovenized oscillator) into a HP5334A. I posted there as well but it's a little late to help the OP out. Regardless, I thought this may be helpful for someone else out there, and wanted to post with additional details. The components required for the adapter board are all jellybean through hole stuff, the most difficult component will probably be the 12 pin 'card edge' socket.For some background, my daily driver counter is an HP5334. It's rock solid but was unfortunately not endowed with the 010 option. Many years ago I decided that the high stability would be beneficial. Finding the required adapter board (05334-60003) proved impossible at the time, unless I was willing to purchase an entire broken counter. I enjoy repairs as much as the next guy, but I did not need two counters, which is what would happen if went down that path. Fortunately the oscillator itself (10811-60111) was readily available through various online auction sites for a fair price. I decided to spin a quick board to fill the gap. The kicad project files and gerbers for which are attached for anyone who may find them helpful.Before installing the board and oscillator a coupling capacitor C8 must be removed and placed in the empty position C100. This will reroute the input of the timebase circuit from the standard oscillator to the ovenized oscillator. No additional changes are needed on the board assembly.There are two (arguably optional) modifications to the chassis that follow. The first is to install a panel mounted 10-turn potentiometer for tuning the oscillator output via EFC. It looks like the original HP board had this part pcb mounted, leaving the adjustment buried deep inside the chassis yet still available through an access hole. I opted to use the same access hole but simply mount the potentiometer at that point. The second modification is to install a small LED to indicate the oven status. It does require drilling a hole. I placed mine on the top right of the front panel. The LED indicates that oven is not at operating temp, and the stability of the oscillator should not be trusted.
Roper Scientific / Princeton Instruments CCD cameras - Page 1
Forum section: electronics / testgear

author: nikodem
author_rank: Regular Contributor
timestamp: March 06, 2023, 08:23:03 pm
content: Well... scientific CCDs are a kind of test equipiment, so I'm trying my luck here...I'm completing a small optical spectroscopy home lab. I've managed to obtain quite sensitive CCD camera from Roper ()P/N 7413-0006), but I'm lacking the controller:(click to see big image)I'm not really the whole Roper/Princeton ecosystem (I've always was an Andor guy), so I have no idea wherte to look for any information. What I'm looking for:Pinout of the DB-25 connector on the back of the camera.Informatyion about compatibility with controllers.Information about PC software

author: zrq
author_rank: Frequent Contributor
timestamp: March 06, 2023, 08:31:12 pm
content: I'm sorry but when I'm doing trash dump diving, such older scientific cameras with propertitary interface (not USB, not CameraLink) and without controller card are usually considered not worth keeping.The interface can be complicated (parallel) and a significant amount of engineering is required to get it to work. Maybe a high end FPGA is needed. At least the controller box or card usually looks scaring complex to me. (Of course, if you are way more competent than me at reverse engineering and engineering camera interfaces and can get such a job done, please ignore this.)I would consider using an astronomy camera with modern Sony sensor for a hobby spectroscopy project. Maybe the only difficulty is there isn't much options with global shutter.

author: nikodem
author_rank: Regular Contributor
timestamp: March 06, 2023, 09:13:22 pm
content: Quote from: zrq on March 06, 2023, 08:31:12 pmTherte are plenty of controllers for these cameras on eBay, so this is not that big of a problem, as one might think. What I would want to know if there are any quirks in terms of controller-camera compatibility.

author: nikodem
author_rank: Regular Contributor
timestamp: March 29, 2023, 08:13:51 am
content: Still no luck, so I decided to bump my post in case someone knowledgable in this matter is here.
Help with unknown Wavetek-SSI service monitor Model 4010 - Page 1
Forum section: electronics / testgear

author: maenishi
author_rank: Newbie
timestamp: March 28, 2023, 08:15:43 pm
content: Hi Everyone,I need help with a Wavetek-SSI Model 4010, I bought it at a garage sale without any manuals, I can't find any information about this model, no pictures or any information. Does anyone know this model?Internally it is very similar to the Wavetek 3001-3002 RF Generator, use same modules with several shorted tantalum capacitors, but it has additional modules.I need Service ManualAppreciate any help.Regards,Milton Maenishi
Agilent/Keysight 89600 VSA vector signal analyser software - Page 1
Forum section: electronics / testgear

author: luckystew
author_rank: Newbie
timestamp: March 28, 2023, 08:05:21 am
content: I am looking for VSA analysis software that would be suited for Agilent/Keysight instruments. I found the 89600 VSA but the licensing costs are really not affordable since I am a high-school student currently and already have spent 5000$ on equipment and don't plan to buy the software for other 9000$ for a license. Does anyone has a keygen or some automatic script that would apply for trial licenses automatically. Or maybe there is another software that does VSA and is for free.

author: colorado.rob
author_rank: Frequent Contributor
timestamp: March 28, 2023, 05:58:05 pm
content: https://www.eevblog.com/forum/testgear/cheap-hardware-to-run-keysight-vsa-89600-software/msg4754015/#msg4754015
What were these 125 Ohm Tektronix attenuators for? - Page 1
Forum section: electronics / testgear

author: graybeard
author_rank: Frequent Contributor
timestamp: March 28, 2023, 05:27:05 am
content: I picked up these two 125 Ohm Tektronix attenuators with many other 50 Ohm attenuators at the W6TRW swap meet last Saturday. They initially appear to have GR874 connectors, but the center contact is not compatible with a standard GR874 connector. It will "mate" with a standard GR874, but the center contacts do not connect.The first part is a Tektronix 017-071 2X (6dB) 125Ω attenuatorThe second is a Tektronix 017-050 10X (20dB) 125Ω attenuatorDo you have any idea what these were for?There are pictures of both below.

author: graybeard
author_rank: Frequent Contributor
timestamp: March 28, 2023, 05:31:44 am
content: I also picked up this Tektronix 067-0511-00 variable attenuator which has a 100Ω linear potentiometer and standard GR874 connectors.

author: factory
author_rank: Super Contributor
timestamp: March 28, 2023, 06:03:23 am
content: The 125ohm GR attenuator are used for the Tek 519.https://w140.com/tekwiki/wiki/519David

author: graybeard
author_rank: Frequent Contributor
timestamp: March 28, 2023, 11:57:13 am
content: Quote from: factory on March 28, 2023, 06:03:23 amThey are listed asoptional accessories for the 519 on page 66 of the 1968 catalog.
Tektronix 754D knob/button panel interchange - Page 1
Forum section: electronics / testgear

author: tektech
author_rank: Newbie
timestamp: March 09, 2023, 08:25:52 pm
content: I need a button/knob panel for a 754D scope. The panels from other models and generations look visibly identical. Anyone knowif all these other model's can be swapped into a 754D?

author: tautech
author_rank: Super Contributor
timestamp: March 10, 2023, 12:48:51 am
content: Quote from: tektech on March 09, 2023, 08:25:52 pmWelcome to the forum.Sphere might have some:https://www.sphere.bc.ca/test/tekparts.htmlOr there might even be a 3D printed model here:https://www.eevblog.com/forum/testgear/replacement-knobs-feet-and-fittings-for-test-equipment/

author: tektech
author_rank: Newbie
timestamp: March 13, 2023, 06:25:44 pm
content: So anyone know if all the similar models button panel will interchange?

author: TERRA Operative
author_rank: Super Contributor
timestamp: March 14, 2023, 02:37:52 pm
content: All TDS500/600/700/800 series scopes use the same knobs. They are freely swappable.What knob do you need? I may have a spare.

author: AVGresponding
author_rank: Super Contributor
timestamp: March 14, 2023, 06:35:16 pm
content: Quote from: TERRA Operative on March 14, 2023, 02:37:52 pmI think it's the panel itself he's asking the question about, rather than the knobs or buttons

author: TERRA Operative
author_rank: Super Contributor
timestamp: March 14, 2023, 11:23:13 pm
content: Ah, well, yes. I should read more closely...The front panels are interchangeable, mostly.The main difference is the prescence or absence of the purple DPO button adjacent to the large knob.A TDS754D has the DPO function so you will want a front panel that also has this function too. I believe it makes no real difference if it comes from a different model or revision.My offer still stands though, let me know what you need exactly and I'll see what I have (if I don't have a complete panel, I might have the parts to repair yours)

author: tektech
author_rank: Newbie
timestamp: March 24, 2023, 07:28:20 pm
content: Hey thanks for the offer TERRA, I found a complete panel from a 540B and it seems to work just fine on the 754D for anyone looking in the future.Thanks for all the replies!

author: james_s
author_rank: Super Contributor
timestamp: March 24, 2023, 07:52:43 pm
content: Sounds like it would be missing the DPO function if your scope is a D series though.

author: tektech
author_rank: Newbie
timestamp: March 28, 2023, 02:40:14 am
content: I did not try the button but I thought the InstaVu was what became DPO in the later models?
Signal Hound SM435C 43.5GHz Real-Time Spectrum Analyzer Review, Teardown & Exp. - Page 1
Forum section: electronics / testgear

author: Hugoneus
author_rank: Frequent Contributor
timestamp: March 26, 2023, 05:13:58 pm
content: In this episode Shahriar reviews the successor to the popular Signal-Hound SM200C, the SM435C Real-Time Spectrum Analyzer covering 100kHz – 43.5GHz with 160MHz of gapless I/Q steaming using a 10GbE optical interface.https://signalhound.com/products/sm435c-43-5-ghz-real-time-spectrum-analyzer-with-10gbe/With its constantly improving Spike software and incredible 1THz/s sweep rate, the SM435C has the potential to be a dream software-defined radio as well as a powerful laboratory & field instrument. This detailed review is organized as follows:00:00 – Introduction01:47 – Instrument overview & design03:49 – Teardown, detailed circuits & systems overview and analysis including X-Ray imaging16:33 – Analysis of a 24GHz pulsed radar module, real-time capability, zero-span mode, fast sweeps29:06 – Noise figure personality and noise-figure measurements features33:40 – Phase noise personality and characterizing the internal instrument phase-noise33:49 – mm-Wave transmit mixer characteristics, digital demodulation capabilities39:05 – Wideband IF output for digital demodulation using a Keysight MXR & PathWave VSA41:35 – Wideband IF output for rapid pulse hopping analysis using a Tektronix MSO-6B Series45:06 – Additional Spike software features46:11 – Concluding remarksYou can watch the video here: [47 Minutes]https://youtu.be/af2HJjrmb0I

author: coromonadalix
author_rank: Super Contributor
timestamp: March 27, 2023, 12:28:41 am
content: Thank you for your videos / explanationsAn 10gbe lan, mani it must spit tons and tons of data if you do a full coverage ... and the speed it does ....
Meter formats - Page 1
Forum section: electronics / testgear

author: Fungus
author_rank: Super Contributor
timestamp: March 26, 2023, 02:39:29 pm
content: Aneng seems to be branching out into all sorts of things these days, not just multimeters. Here's a new insulation tester:It seems to me that's areallycool format for a meter, I'd love to have a little desktop multimeter that shape instead of a tall+thin that barely stays up on its stand.I'd want the probe connectors down one side and push buttons to select ranges down the other with the screen in the middle. It's way better than the current obsession with "make it look like a phone", it needs to be made.Just throwing ideas out there in case somebody is reading...

author: Hexley
author_rank: Regular Contributor
timestamp: March 26, 2023, 03:46:43 pm
content: For some reason that kind of reminds me of the Snap On meter from a few years ago. No longer in their catalog, so must not have caught on.

author: Fungus
author_rank: Super Contributor
timestamp: March 26, 2023, 04:07:39 pm
content: Quote from: Hexley on March 26, 2023, 03:46:43 pmI remember seeing those ... they were huge and sold at "snap on" prices.
First Scope: Tek 2445 - Page 1
Forum section: electronics / testgear

author: SynViks
author_rank: Contributor
timestamp: March 26, 2023, 07:51:24 am
content: *Edit* As I'm new here I'm not entirely sure if this is the proper sub forum for this thread. Feel free to move it to the correct one if isn't, mods.Don't really have a pressing need for a scope, but wanted to look at some PWM waveforms and found a 2445 locally for a Benjamin. Came with two P6137 and two P6131 probes, operator and service manual.Powered up looked at a few waveforms via the test port:https://youtu.be/QbkXAeunESkHaven't used an analog scope before but some of the traces seem a bit fuzzy, and as seen in the video some wobble. Also the traces seem to be shifted over a bit such that the horizontal shift knob needs to a bit turned for the trace to be centered. Fan speed seem to be constant for a while but then slowed and varied in speed. CRT focus seemed a little uneven; adjusting focus for the center resulted in blurrier edges.After using it for an hour heard a pop and disgusting smoke, unit was still displaying a trace but I turned it off pretty quick. Usual suspects in the powersupply board seem to be at fault:Also removed a seemingly innocent electrolytic from the board and found some nastiness underneath:Checked several of the larger resistors and found them to be out of tolerance. Common to replace these? How many resistors should I check?Processing board and motherboard look fine. I tried the "tap on the heatsink" thing for the hybrids but doings so resulted in no observable changes on the CRT, so they should be in good shape:So a recap of the power supply boards seem to be in order. Seems like it would be a good idea to replace some resistors as well, and I'll have to fix the broken fan shaft collet (what a bizarre design). Big question is how far beyond that should I go? Is there anything on the processing board I should replace?Also found this note wedged in the service manual referencing PN 119-1445-02 (Digital Attenuator input amplifier). Not sure if this means there's an issue with the CH 2 attenuator, whether it was taken care of... Any thoughts on what kind of symptoms would show if the attenuator amplifier were failing?

author: jonpaul
author_rank: Super Contributor
timestamp: March 26, 2023, 01:42:58 pm
content: Bravo for the fine post and purchaseSuggest you post all to tekscopes2 and tekscopes @ groups.iomany Tektronix scopes afficanados and ex factory engineers are techsUse a sig gen to check every range of Vertical V/div to test attenuatorThe yellow cracked VDE capacitors at the power supply input are firebombs and must be replaced!!!!bon courageJon
Tektronix TLA7012 Dim Screen - Page 1
Forum section: electronics / testgear

author: Omicron
author_rank: Regular Contributor
timestamp: June 03, 2021, 06:31:53 am
content: I have a TLA7012 logic analyser that I use on occasion. It hadn't been powered up in a long while and when I wanted to use it again the backlight was very dim, to the point of the screen being barely visible at all. My fist thought was that either the backlight or the inverter were bad, but it turned out to be something completely different that I hadn't expected.The BIOS has a setting that determines how the backlight is controlled. It can be set to "I2C" or "PWM". The default is "I2C" but the TLA actually needs it to be "PWM". When the CMOS battery on the motherboard dies, the setting reverts to "I2C" and you end up with a dim screen. Replacing the battery and selecting "PWM" in the BIOS fixed the issue.I found this surprising, so I post it here in case anyone else runs into this issue.

author: calibrationfixture
author_rank: Regular Contributor
timestamp: March 26, 2023, 05:50:55 am
content: Hi,Found this topic by accident. My TLA7012 had also a flat MB Battery (and corrupt HDD). After the HDD Rebuild (Windows XP, TLA Application V5.1 and the whole Array of needed separate Drivers) I have now a TLA7012 with bright Display (100% Initial Brightness: Default Setting) including the I2C setting. An acquintance of mine also pointed me to this issue, but in my case clearly it wasn't needed to change the setting. This morning I changed the setting to PWM out of curiousity. The result: no observed difference. In addition: it is an Early TLA7012 without Touchscreen. Anybody any ideas?Calibrationfixture
FADOS9F1 Circuit Board Tester - Page 1
Forum section: electronics / testgear

author: glicos
author_rank: Regular Contributor
timestamp: January 20, 2016, 02:02:11 am
content: Anyone have experience using FADOS9F1 circuit board tester?I think this is cheap alternative for Huntron Trackers...

author: hgjdwx
author_rank: Regular Contributor
timestamp: January 20, 2016, 03:33:01 am
content: What price? where to buy? I would like to know

author: miguelvp
author_rank: Super Contributor
timestamp: January 20, 2016, 03:48:36 am
content: Doesn't look cheap (£1,599.99):http://www.burntec.com/USB_Curve_Tracer_Test_Oscilloscope_IR_Temperature_FADOS9F1I've seen Alibaba links while searching but they don't have a price so you gotta ask.

author: glicos
author_rank: Regular Contributor
timestamp: January 20, 2016, 03:58:58 am
content: Attached is their cheapest model. Any feedback from user of this instrument?

author: miguelvp
author_rank: Super Contributor
timestamp: January 20, 2016, 04:06:38 am
content: Maybe cheaper but not cheap at £1,249.99:http://www.burntec.com/USB_Curve_Tracer_7_in_1_Test_Repair_Oscilloscope_VI_TesterNot a lot of info out there on anyone using them.

author: hgjdwx
author_rank: Regular Contributor
timestamp: January 22, 2016, 09:53:02 am
content: The price is too expensive, is not conducive to the promotion

author: bookaboo
author_rank: Frequent Contributor
timestamp: January 22, 2016, 11:14:23 am
content: I built this from w2aew and found it quite handy:Doesn't have bells and whistles and mine is a bit clunky but if you have a good board and a bad board it's still very useful, price to build is negligible.

author: glicos
author_rank: Regular Contributor
timestamp: March 25, 2023, 09:27:25 am
content: There's a same instrument that can do the same function as this fados at much lower cost. Of course less the function of Oscilloscope and buil-in power supplu of FADOS9F1.https://www.ucore-electronics.com/product/uce-ct220s-fault-locator-curve-tracer/https://www.ucore-electronics.com/product/uce-ct220l-tracer/
Multimeter/Bluetooth Speaker Combo - Page 1
Forum section: electronics / testgear

author: boffin
author_rank: Unknown
timestamp: March 24, 2023, 07:26:43 pm
content: In all my years; I've always thought why doesn't somebody combine these two..https://www.banggood.com/BSIDE-ZT5566-19999-Counts-Automatic-Range-Multi-function-Bluetooth-Speaker-Digital-Desktop-Multimeter-p-1966584.html

author: Fungus
author_rank: Super Contributor
timestamp: March 25, 2023, 06:17:41 am
content: https://www.eevblog.com/forum/testgear/what-new-aneng-an888s-combines-multimeter-bluetooth-speaker-and-clock/