hybridfree/eevblog-posts huggingface dataset:
Activate options for TDS5xx,6xx,7xx C/D, using floppy - Page 1
Forum section: electronics / testgear

author: Galen
author_rank: Regular Contributor
timestamp: March 03, 2019, 03:29:48 pm
content: Many posts have talked using GPIB to activate the options for Tektronix TDS500/600/700 scopes. But playing with GPIB is not very easy (the right card, driver, old computer, settings, and cost) for me.Recently, during using the 'TDS500/600/700 NVRAM floppy backup and restore tool' to backup the NVRAM for my TDS540C, I found a way to activate the options by using this tool to write the revised backup to NVRAM through floppy. Quite easy! So, post it here, hope can help the TDS owners who is interest in this.Note: The 'TDS500/600/700 NVRAM floppy backup and restore tool' is developed by flyte, posted at 'https://www.eevblog.com/forum/testgear/tektronix-tds500600700-nvram-floppy-dump-tool/'.Thanks flyte for developed this great tool!How to activate the option by floppy:When the NVRAM was dumped, use a hex editor to open it. Then refer to below table, to change the related bit from 00 to 01, save. Use floppy to write it back, restart the TDS, the option will be enabled.NVRAM Addr Addr in Hex Editor Value Option on/off Option0400081D 0000081D 00 Off TV Trigger0400081F 0000081F 01 On Option 1M04000821 00000821 00 Off N/A04000823 00000823 01 On Option 1304000825 00000825 01 On Option 1F04000827 00000827 01 On Option 2F04000829 00000829 00 Off N/A0400082B 0000082B 01 On Option 2C0400082D 0000082D 00 Off Option 3C0400082F 0000082F 00 Off Option 4C04000831 00000831 00 Off Option 2MPlease note, some option need hardware to be installed (TV trig, 13, 3C, 4C, 2M). Option will not appear if you not install them.Much more easy than GPIB process, right? Have fun!

author: Galen
author_rank: Regular Contributor
timestamp: March 05, 2019, 02:46:01 pm
content: I decided to change my DS1486 and DS1650. Got the replacement parts today. I put sockets this time as many people do. Put the new parts in. Install the CPU board back to the scope. Put the floppy minimal writer disk in the floppy drive, with the right bin file on it. Start the scope, when floppy light on the first time, flip the switch to calibration position. After write finished, scope restart, flip this switch back to normal position and withdraw the disk out. Scope started with no issue, all options still there. Successful!Don't know how many years the new parts can last, but I will buy 1 more set for backup. Future, just pull the bad set out, and put the new set in, start the scope and floppy write back, that's it!

author: jhov
author_rank: Newbie
timestamp: August 13, 2019, 03:21:04 pm
content: I wish I had seen this before going out and buying a GPIB interface just for this task. I can't complain though, I'm finding it useful for other instruments as well. In any case, awesome work!
TR6163 manual - Takeda Riken, Advantest, ADCMT - Page 1
Forum section: electronics / testgear

author: tfm
author_rank: Contributor
timestamp: May 10, 2019, 06:38:50 pm
content: Hello,I've recently purchased a TR6163, multi channel current and voltage source, and I couldn't find a single document or specs about it.Does anyone have any information/document about it? Even if it is in japanese, that is not a problem.I know the story of Takeda Riken, later became Advantest, and then some testing equipment went to Adcmt.Advantest is known for not making any documents available. There are some discontinued manuals to be found here:https://www.advantest.com/service-support/electronic-measuring-instruments/operating-manual-of-discontinued-productshttp://www.adcmt.com/techinfo/product/index/productlist-extra_index.htmlR&S also have some documents available, I am not sure what relationship Advantest and R&S had.But no information about the TR6163 to be found there.

author: tfm
author_rank: Contributor
timestamp: May 12, 2019, 11:38:43 pm
content: Just bumping up, guys, I've had my share of searching and digging, but nothing on the internet. Anyone?

author: TERRA Operative
author_rank: Super Contributor
timestamp: May 16, 2019, 01:38:35 am
content: I'll send an email off in the next few days to their Japan office.I've had good experiences with them in the past in getting manuals for obsolete gear.

author: serg-el
author_rank: Regular Contributor
timestamp: May 17, 2019, 09:49:33 am
content: All that is ...

author: tfm
author_rank: Contributor
timestamp: May 17, 2019, 05:37:53 pm
content: Thank you very much!At least I know the basic specs, and it is a very fine piece of equipment, as I suspected. I couldn't find drifting figures, though.What year is that catalog?The equipment is coming from Japan, I still don't have it here with me. From the photos of the actual unit, it is loaded with 1x TR 61604, 1x TR61603 and 2x TR61601 or TR61602.All I am in need now are the GPIB command instructions, I believe, and calibration instructions.

author: TERRA Operative
author_rank: Super Contributor
timestamp: July 02, 2019, 04:30:39 am
content: Unfortunately Advantest Japan said they have no info at all as it is an old unit.

author: tfm
author_rank: Contributor
timestamp: August 13, 2019, 12:41:48 am
content: That is alright, thank you for trying!
Does anyone have a schematic for Tektronix 1720 vector scope? - Page 1
Forum section: electronics / testgear

author: tkamiya
author_rank: Super Contributor
timestamp: August 11, 2019, 05:40:45 pm
content: Does anyone have a schematic for Tektronix 1720 vector scope?My unit itself functions but none of the LEDs on front lights and I cannot put it on test mode. The voltage across LED is 0.1V so the problem has to be the driver side.Thanks.

author: Testtech
author_rank: Regular Contributor
timestamp: August 12, 2019, 11:06:53 pm
content: On the Tek website you can get the 1720SCH s/n B04+, onhttp://bee.mif.pg.gda.pl/ciasteczkowypotwor/Tek/,there is the 1725 manual, this is the PAL version, but everything else is the same.

author: tkamiya
author_rank: Super Contributor
timestamp: August 13, 2019, 12:31:06 am
content: Thank you.
Rigol DP832A .ROF file conversion - Page 1
Forum section: electronics / testgear

author: drummerdimitri
author_rank: Frequent Contributor
timestamp: August 11, 2019, 12:02:48 pm
content: I would like to import the .ROF file into an excel sheet for analysis but the issue is that Rigol wrote an article in 2015 using an older version of the current excel so the instructions aren't clear after step #16 on page 11 since I get a different menu after I try importing the data from the file.Can anyone assist me with the conversion?Thanks!

author: JDubU
author_rank: Frequent Contributor
timestamp: August 11, 2019, 12:36:30 pm
content: If you post your .ROF file, I might be able to convert it for you.

author: tv84
author_rank: Super Contributor
timestamp: August 11, 2019, 02:50:36 pm
content: That conversion manual is unbelievable!! It would never cross my mind that they publish a conversion method like that one!!!

author: drummerdimitri
author_rank: Frequent Contributor
timestamp: August 11, 2019, 03:37:37 pm
content: Quote from: JDubU on August 11, 2019, 12:36:30 pmThanks for offering but I would like to learn how to do it as I will be doing it quite often and don't want to bother others with it every time

author: drummerdimitri
author_rank: Frequent Contributor
timestamp: August 11, 2019, 03:38:56 pm
content: Quote from: tv84 on August 11, 2019, 02:50:36 pmI know right. How ridiculous!They should just save us the time and have the tool save as a CSV file instead in their next firmware update. What a joke this method is

author: tv84
author_rank: Super Contributor
timestamp: August 11, 2019, 04:36:38 pm
content: If you look at the manual it's very simple to make a prog that does the conversion.Starting at offset 0x1C, there are a number of little-endian 32bit words, in groups of 6 words (CH1 VOL+CH1 CUR, CH2 VOL+CH2 CUR, CH3 VOL+CH3 CUR).BTW, their instructions should work on newer Excel versions.

author: drummerdimitri
author_rank: Frequent Contributor
timestamp: August 11, 2019, 11:01:46 pm
content: Quote from: tv84 on August 11, 2019, 04:36:38 pmIn the latest excel verison, I don't get the same screen so I cannot follow the same instructions. Need someone who can translate them to be applicable in the latest verison

author: JDubU
author_rank: Frequent Contributor
timestamp: August 12, 2019, 12:13:34 am
content: Quote from: drummerdimitri on August 11, 2019, 11:01:46 pmOn page 10 of the instructions it says:15) Now, open the ReadDPROF.xlsx workbook and select the RawDataFileTab (at the bottom):ReadDPROF.xlsx looks to be a supplied Excel template that has the calculations built into it. Notice the tabs at the bottom labeled "Calculators" and "RawDataFile". These calculations are described on page 14 of the instructions. Apparently that Excel template was available for download when the instructions were written but I did not find it on the Rigol website or via a Google search.

author: thn788
author_rank: Contributor
timestamp: August 12, 2019, 07:36:19 am
content: Can't help with how to use Excel, but maybe a better documentation of the file-format might help?!
What is the best way to change range  in aneng multimeter? - Page 1
Forum section: electronics / testgear

author: 001
author_rank: Super Contributor
timestamp: August 11, 2019, 01:06:44 pm
content: HiThe dmm is an8009I don`t need in 9.999A range but highly intersted in missed ranges 9.999mA 99.99mACan I simply replace 0.01Ohm shunt with 0.1? Any hex mods to change decimal point?
Rigol DS1054 - Turn off annoying frequency display - Page 1
Forum section: electronics / testgear

author: prwiley
author_rank: Contributor
timestamp: August 08, 2019, 03:27:46 pm
content: On my Rigol DS1054 there is a small box that floats over the display in the upper right hand corner just under the horizontal position display. It shows the frequency of signals on each channel. The box obscures the last three column headings on the Measure table when it is displayed.Is there any way to hide the frequency display so I can see all the column headings on the Measure table?I have been through the manual but can't find a description or picture of the frequency display.

author: hexreader
author_rank: Frequent Contributor
timestamp: August 08, 2019, 03:31:11 pm
content: Measure.... Counter.... .... OFF

author: Mr. Scram
author_rank: Super Contributor
timestamp: August 08, 2019, 03:36:42 pm
content: It sounds like that's the hardware counter. If it is, learn to love it. It's a much better friend than the software counter.

author: Miti
author_rank: Super Contributor
timestamp: August 08, 2019, 04:27:44 pm
content: Yes, that's the HW counter. I love it. It is always on on my scope.

author: bd139
author_rank: Super Contributor
timestamp: August 08, 2019, 04:43:57 pm
content: Me too.Works better than the shitty one in the DG1022Z too

author: prwiley
author_rank: Contributor
timestamp: August 08, 2019, 05:28:35 pm
content: Thanks very much!I've been wanting to get a screen shot without that counter in the way . . .

author: Fungus
author_rank: Super Contributor
timestamp: August 09, 2019, 11:23:01 am
content: Opens PDF of manual, types "frequency counter" in the search box...
LeCroy WaveAce 224 USB Port Bad - Page 1
Forum section: electronics / testgear

author: kiheiman
author_rank: Contributor
timestamp: August 08, 2019, 11:18:55 pm
content: Today, I was doing some screen captures on my WaveAce 224 (saving screens to the attached USB thumb drive). I saved several screens and moved the thumb drive to a PC to copy the snapshots. I moved the thumb drive back to the 224 but it did not recognize the drive. I tried several other drives and they were not recognized either. I assume that the USB port is blown. All other scope functions appear to work OK. Is there anything else that I can check? I also did a factory reset and the box has the latest Lecroy firmware (about 4 years old). I am going to keep the 224 powered down overnight and will test again with the USB port. Looks like I will be buying a new DSO.RegardsClint

author: tautech
author_rank: Super Contributor
timestamp: August 09, 2019, 07:06:49 am
content: First thing I’d check is the sockets solder joints to the PCB.
UPS or Inverter for powering test equipment recomendation? - Page 1
Forum section: electronics / testgear

author: charliedelta
author_rank: Regular Contributor
timestamp: August 03, 2019, 06:06:35 am
content: I need to buy an inverter to power my Siglent Spectrum Analyzer from my car to make some EMC measurements. I am looking for recomendation on a brand that is clean EMC wise and something that is well protected and Sinewave clean.Most of the manufacturers dont have performance data nor do they have EMC data on their web pages. APC has some data for conducted and radiated emissions but no data for radiated emissions for below 30mhz. The lab that they use in Taiwan does not seem to be very sophisticated so i dont trust their data.I was leaning more towards a UPS because modern cars produce a lot of EMI pollution when running. I would still be interested in hearing about how you guys power your test instruments in portable field situation. I did try my Honda inverter generator but that was spewing out garbage everywhere, its totally filthy.

author: tautech
author_rank: Super Contributor
timestamp: August 03, 2019, 11:20:51 am
content: Surely some toriods clipped on a extension lead and away from the generator can get emissions down to where you can do some tests. Also the SSA use a SMPS so the supply quality to it within reason shouldn't affect its operation in the least.I'd suck it and see.

author: BillB
author_rank: Unknown
timestamp: August 03, 2019, 11:22:15 am
content: I don't have any specific recommendations, but I do remember watching this video where the Siglent guys had done some experiments with that SSA on portable power. They had some recommendations in it IIRC.

author: charliedelta
author_rank: Regular Contributor
timestamp: August 07, 2019, 10:53:18 am
content: Thanks, I will look into that information from Siglent.The Honda EU series of generators cant be choked off. I tried Schaffner EMC filters and Ferrite common chokes using 43#, 31# etc etc. WHen you have a EMC dog fixing it can be difficult. I have some Meanwell power supplies that are horrendous and Meanwell does not propose a filter system that will meet approvals.Thanks

author: sibeen
author_rank: Frequent Contributor
timestamp: August 07, 2019, 10:59:08 am
content: I would take any published data about EMC from any inverter/UPS manufacturer with a very large grain of salt

author: graybeard
author_rank: Frequent Contributor
timestamp: August 08, 2019, 01:34:45 am
content: Why not rent a battery powered spectrum analyzer if your need is short term?
Sencore LC102  joined together the schematic pages of the 2000 and 3000 boards - Page 1
Forum section: electronics / testgear

author: coromonadalix
author_rank: Super Contributor
timestamp: August 08, 2019, 01:19:07 am
content: I will upload to K04BB website the joint together multi part pages for the boards, took few hours to doThe 1000 board, already made by someoneMade by meThe block diagramThe 2000 and 3000 boardAround 17 megs each, had to patch ic16 ic17 and ic26 on the 2000 "Mcu" board, no manual around the web has this section correctly scanned ??Hope it helpCopied in the buy sell thread, until someone complain or the admins remove it ?Uploaded the LC102 calibration procedures at K04BB too
Kepco CPS 15-6M or A Power Supply service manual or schematic needed - Page 1
Forum section: electronics / testgear

author: Paceguy
author_rank: Regular Contributor
timestamp: August 07, 2019, 11:08:11 pm
content: My first post here. I have an older Kepco CPS 15-6M or A that had a fried diode, I believe it to be a zener diode. Would anyone happen to have the service manual, schematic diagram or parts list for this model?It's nice to finally join the group, I should have done so along time ago.
Keysight 3000T why dBV for FFT ? ? - Page 1
Forum section: electronics / testgear

author: EE-digger
author_rank: Frequent Contributor
timestamp: August 10, 2019, 09:17:19 pm
content: Why, oh why ?I think every scope I've used expressed FFT amplitude units in dBm in a 50 ohm system.On my 3000T, I had to look at some signals this morning and was surprised to find amplitude 13.01 dB down. WTF? Of course, they are in dBV, with no option to change.As a sanity check, I fired up my 52486A and there they were ... dBm.What were they thinking?

author: DaJMasta
author_rank: Super Contributor
timestamp: August 10, 2019, 09:21:22 pm
content: No option to change seems silly, but since they let you use the FFT function on the 1M inputs, dBm wouldn't really be the right thing to use there. Do they let you set a reference level and just use dBc?

author: JDubU
author_rank: Frequent Contributor
timestamp: August 10, 2019, 09:30:48 pm
content: Excerpt from the "Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide" (page 97):"...FFT (Magnitude) Units0 dBV is the amplitude of a 1 Vrms sinusoid.When the FFT source is channel 1 or channel 2 (or channel 3 or 4 on 4-channelmodels):• FFT units will be displayed in dBV when channel units is set to Volts andchannel impedance is set to 1 MΩ or the probe attenuation setting issomething other than 1:1.• FFT units will be displayed in dBm when channel units is set to Volts, channelimpedance is set to 50Ω, and the probe attenuation setting is 1:1.For all other FFT sources or when a source channel's units has been set to Amps, FFT units will be displayed as dB.FFT (Phase) UnitsIn this case, the vertical units are degrees or radians...."Did you find that not to be true?(Note: edited for 3000T series instead of 3000A series)

author: EE-digger
author_rank: Frequent Contributor
timestamp: August 10, 2019, 10:03:04 pm
content: Quote from: JDubU on August 10, 2019, 09:30:48 pmYou win the prize. The channel is 50 ohm but because I'm running an active probe with 10:1 attenuation, dBV took over. I actually RTFM but missed that.Thank you!DaJMasta - I didn't see any other options and the math function does not allow FFT as an argument, otherwise Mx + B would be handy.
RglComm update with screen capture for DS4024 & DG4162 - Page 1
Forum section: electronics / testgear

author: wholder
author_rank: Regular Contributor
timestamp: August 05, 2019, 08:58:09 pm
content: I've updated my RglComm program to support capturing the screen image from a DS4024 or DG4162 and have added instructions on how to run it on macOS, Linux (tested with Mint 19) and Windows (tested with Windows 10.) This project is still in the early stages, but feedback, bug reports and suggestions greatly appreciated.https://github.com/wholder/RglCommFeatures still under development include:A simple scripting language to run automated testsLoggingSupport for more devicesDevice-specific interfacesWayne

author: wholder
author_rank: Regular Contributor
timestamp: August 07, 2019, 02:44:18 am
content: Note: 600 point waveform capture also now supported for DS1102E Digital Oscilloscope (see README athttps://github.com/wholder/RglComm)Wayne
TEC extension module for JBC - Page 1
Forum section: electronics / testgear

author: Nano992
author_rank: Newbie
timestamp: August 06, 2019, 04:22:53 pm
content: Hello! Immediately I apologize for my englishWho has already used the TEC external module for JBC stations with nt105 support?Very interested in how they made support for the Nano soldering in this module. Whether this module will work with DIY projects of JBC stations or Chinese stations Leisto T12-11.I want a Nano soldering iron, but buying the original Nano station is too expensive for my work.
Hacked sds1104x with MSO option - Page 1
Forum section: electronics / testgear

author: NaxFM
author_rank: Regular Contributor
timestamp: August 03, 2019, 01:35:40 pm
content: Hi guys, I've been watching Dave's videos for years, but I'm pretty new here in the forum, so, sorry it this is not the right place to ask this question.I want to upgrade from my old SDS1072CML (a toy for today's standards) to a newer 4 channel oscilloscope with MSO capabilities, as i do a lot of digital stuff.I really like the sds1000x-e model, so that is my choice, but I don't really know if I should spend the extra 250+ euros for the 200Mhz version. I want a 200MHz oscilloscope, and I know that the 100MHz can be hacked, however I'm not able to find any information about the compatibility of the hacked version with the optional hardware for mixed signal capabilities.If I hack the oscilloscope, it is still guaranteed that the sla1016 hardware with software option will work?And is there a way to also hack the mixed signal software? I can't find anything about that.Thank you for helping a forum newbie!

author: BillB
author_rank: Unknown
timestamp: August 03, 2019, 02:02:33 pm
content: Check this thread:https://www.eevblog.com/forum/testgear/unlocking-siglent-sds1104x-e-step-by-step/The SLA will work with a "hacked" scope. Once you find the licensing keys, the MSO sw option will work as if you purchased the key. If the SLA1016 hardware is worth the cost is another issue that has been discussed on this forum as well.I'm not sure what you mean about hacking the mixed signal software?

author: NaxFM
author_rank: Regular Contributor
timestamp: August 03, 2019, 02:07:21 pm
content: Thank you a lot for your answer.Sorry if I'm not clear, English is not my native language.I wanted to know if there's also an hack to activate the mixed signal capabilities without having to buy the license key.I already read that thread, but I really can't understand if it's possible to do it

author: BillB
author_rank: Unknown
timestamp: August 03, 2019, 02:11:35 pm
content: Yes, finding the licensing keys includes the MSO option key.

author: mlefe
author_rank: Regular Contributor
timestamp: August 11, 2019, 04:14:06 pm
content: Hi NaxFm, it's important to clarify that hacking will NOT allow you to "use" the mixed signal capabilities.You ALSO need to purchase the hardware (what BillB mentioned as option SLA1016)Basically, you can get the licence key but not the hardware part of the MSO... you will have to buy that part.Is that clear for you?
IFR COM-120A need help - Page 1
Forum section: electronics / testgear

author: mrf245
author_rank: Regular Contributor
timestamp: September 15, 2014, 02:49:56 am
content: hello everyone,this is my first topic here.I have an IFR COM-120A service monitor,now the"deviation meter"failed in self-test.And I tried to replace most of capacitors on "BASEBAND TRAY"but it still failed.Another problem is it had OPTIONS "OUTPUT AMP"in menu,so in operation it display AUX port can output +13DBm max,but I check infact no hardware OUTPUT AMP module in it,so if AUX out level less than-13DBm,no problem;but up to -13DBm,actual output is -13-26(amp gain)=-39DBm,oh my good....so does anyone know.....the calibration password of it??It calibration out of date.I don't know if re-calibration maybe OK.and how can I cancel the option in menu?(maybe this CONTROLLER TRAY was replaced by others,not matched the machine)I'm looking forward to someone can tell me,thanks.

author: mrf245
author_rank: Regular Contributor
timestamp: September 16, 2014, 03:11:33 am
content: anyone could help?

author: Mikecomm
author_rank: Newbie
timestamp: October 21, 2014, 02:21:11 am
content: Hello i have the same problem i am looking for password to ajust 1mhz up ican not ajust or make changei got IFR-120 A MODELO ..IF I FIND SOMETHINK WILL SEND TO YOU LOOKING FOR MANUAL TO . ONLY IFR-120CMIKE

author: try2fix
author_rank: Contributor
timestamp: August 06, 2019, 09:28:22 pm
content: Password FMYSVCD
Teardown, Repair and Experiment with an Agilent DCA 86100A Wide-Bandwidth Scope - Page 1
Forum section: electronics / testgear

author: Hugoneus
author_rank: Frequent Contributor
timestamp: August 05, 2019, 03:22:46 pm
content: You can watch it here: [31 Min]youtu.be/VPO60E_Z1Tc

author: Hugoneus
author_rank: Frequent Contributor
timestamp: August 06, 2019, 12:07:58 am
content: Please feel free to share your suggestions here as well.

author: Zucca
author_rank: Unknown
timestamp: August 06, 2019, 08:41:14 am
content: https://www.eevblog.com/forum/other-blog-specific/teardown-repair-experiment-with-an-agilent-dca-86100a-wide-bandwidth-scope/msg2596626/#msg2596626
DG1022 Arb output choke value question - Page 1
Forum section: electronics / testgear

author: BiOzZ
author_rank: Regular Contributor
timestamp: August 05, 2019, 07:06:31 pm
content: I have a DG1022 arb and one day the channel 1 output just stopped outputting anything, after a lot of investigation and chasing a relay rabbit hole i found a short on the output choke across the two internal inductors (pictured) it has a red dot on either side and i was wondering if anyone had a value or part number for this either from a previous repair, access to a service manual or possess a dead unit they are willing to testthe choke is right on the output before (or i guess part of) the output filter isolating the output and the output ground, channel 2 does not have a similar choke so i cannot test that one, it does not have a component name/value designator on silk like most of the components in the thingim aware i could calculate out a fitting value or even jump the thing but id rather do it right as its one of my most used bits of gear. But if your aware of what the output value should be but dont know exactly please let me know
Accessing internal memory of a Keysight U9391C Comb Generator - Page 1
Forum section: electronics / testgear

author: Pulse Cloud
author_rank: Contributor
timestamp: August 05, 2019, 03:31:12 pm
content: Hi. This is a long shot, but since I can't seem to post questions on the Keysight discussion forums, here I am.Is there a way to access the internal memory of a Keysight U9391C Comb Generator in order to obtain its phase-vs-frequency characteristics (the phase standard)? Maybe a remote command to query this data?Thank you.

author: tv84
author_rank: Super Contributor
timestamp: August 05, 2019, 04:44:48 pm
content: A SCPI command?

author: Pulse Cloud
author_rank: Contributor
timestamp: August 05, 2019, 05:55:49 pm
content: Yes, an SCPI command would do, but (and I could be totally wrong here) AFAIK the U9391C doesn't have an SCPI command interface. At least none of the manuals I found mention any SCPI commands.
Trying to clone Agilent 86100A hard drive to SSD - Page 1
Forum section: electronics / testgear

author: swperk
author_rank: Regular Contributor
timestamp: August 03, 2019, 01:14:19 am
content: I have an 86100A Infiniium scope that works fine, but I am hoping to improve its performance by cloning its hard drive to an SSD. I have not been successful, so I'm looking for some advice from people who know more about this than I do!I took the original 3.0GB hard drive and used MiniTool Partition Wizard to clone it to a 64GB PATA SSD using the default settings, which included scaling up the size of the cloned partition proportional to the increased size of the SSD. The cloning went perfectly, but when I installed the SSD and tried to boot from it, the BIOS recognized the SSD but refused to boot, and the scope just beeped incessantly. Then I decided to clone the drive to the SSD and keep the cloned partition the same size as the source drive (2.0GB). This time, the scope tried to boot up but stopped and asked me for the location of the COMMAND.COM file.The scope is running Windows 98, and I have to admit that I'm not familiar with limitations that this OS might have regarding maximum drive capacity or any other special requirements. I've successfully cloned other drives for Agilent T&M gear, but those instruments were newer and running Windows XP or better.One more question: is it possible to upgrade the OS on the 86100A to Windows XP?Any and all help will be much appreciated!Thanks,Stan

author: Per Hansson
author_rank: Unknown
timestamp: August 03, 2019, 11:14:51 am
content: Try to use HDAT2 to limit the size of the drive using the "set max address" command so it matches the original drives size.https://www.hdat2.com/

author: swperk
author_rank: Regular Contributor
timestamp: August 03, 2019, 11:41:30 pm
content: I solved the issue.First, I had to set the partition size on the SSD to 2GB, which seems to be because of a Windows 98 limitation for the boot partition size. Then I did a sector-by-sector copy. Finally, I changed from using MiniTool Partition Wizard to using EaseUS ToDo Backup and its cloning function. It took several tries of various permutations and combinations before I found the proper method.Now we all know!
New DC clamp mestek CM82C vs old uni-t ut210e - Page 1
Forum section: electronics / testgear

author: 001
author_rank: Super Contributor
timestamp: August 01, 2019, 11:08:31 am
content: Hi!I`m looking to buy uni-t ut210e nowBut I see mestek CM82Chttps://www.gearbest.com/multimeters---fitting/pp_009402176983.html6000 counts in stock and no pink enclosureIs it good or bad?I can`t see range button

author: 001
author_rank: Super Contributor
timestamp: August 01, 2019, 12:19:38 pm
content: And what about misterious Bside ACM91?

author: rsjsouza
author_rank: Super Contributor
timestamp: August 02, 2019, 01:20:25 am
content: I don't know about this particular clamp, but Mestek's small DM91A was quite reasonable - although with a terribly slow continuity.

author: thm_w
author_rank: Super Contributor
timestamp: August 02, 2019, 09:43:22 pm
content: CM82CQuoteUT210EQuoteSo the low current range is slightly worse accuracy (+0.5%), but has much wider range (0-6A). AC current and voltage have the same stated accuracy.Not sure what you mean by range button, UT210E doesn't have it right? But this thing does not have manual ranges, so auto range which is good right.Its cheaper on Aliexpress as well:https://www.aliexpress.com/item/32962090990.htmlAre ACM91 and CM82C the same thing?Review of ACM91:https://lygte-info.dk/review/DMMBSide%20ACM91%20UK.htmlACM91:https://www.aliexpress.com/item/1970498378.htmlCan get it in black, blue, or off-white:https://www.aliexpress.com/item/1349685186.html

author: 001
author_rank: Super Contributor
timestamp: August 03, 2019, 01:56:06 pm
content: Quote from: thm_w on August 02, 2019, 09:43:22 pmNO! Check dual display vs single etc
Remote control Oscilloscope - Page 1
Forum section: electronics / testgear

author: carvalhoatx
author_rank: Newbie
timestamp: July 25, 2019, 03:30:48 pm
content: Hello Folks,Anyone help with an digital Oscilloscope TRO/Rohde to SCPI command. I want to read the curve (trace) in Time domain and send them values (amplitude) to my PC.I don`t know how to do it. I`m using Matlab. Because, after, I want to plot that curve in my PC. Using the RTO manual i looked for export trace, curve and so one, But all those option doesn't worked.Please, help me. kind Regards,

author: egonotto
author_rank: Super Contributor
timestamp: July 26, 2019, 02:44:52 am
content: Hello,in User Manual 1332.9725.02 ─ 13 on page 1262 is an example "Exporting Raw Data of a Single Waveform to BIN FileSaves the data of a single analog waveform in integer 8 bit format (raw data) to a BINfile".Does it not work?Best regardsegonotto

author: carvalhoatx
author_rank: Newbie
timestamp: August 01, 2019, 08:50:32 am
content: hello. It worked... a little different, but worked. Now I want to save them to horizontal axis too. According manual it is possible, but, it doesnt worked. Any another suggest? regards,

author: MarkF
author_rank: Super Contributor
timestamp: August 01, 2019, 02:52:28 pm
content: https://www.rlocman.ru/i/File/2018/07/23/RTO_UserManual_en_11-1.pdf20.8.6 Waveform DataTo set the export data format, see FORMat[:DATA] on page 1221.CHANnel[:WAVeform<n>]:DATA:HEADer?.............................................................. 1260CHANnel[:WAVeform<n>]:DATA[:VALues]?............................................................ 1260QuoteQuote
MOVED: Help fixing Siglent SDG805 - Page 1
Forum section: electronics / testgear

author: KaiDT
author_rank: Contributor
timestamp: August 02, 2019, 09:23:04 am
content: This topic has been moved to RepairRepairwhere it might be better suited.https://www.eevblog.com/forum/index.php?topic=200154.0
Looking for manual pdf for Keithley Model 35050 (not 35050A or AT) - Page 1
Forum section: electronics / testgear

author: GEOelectronics
author_rank: Regular Contributor
timestamp: August 01, 2019, 09:57:31 pm
content: Manual with schematic, it's an electrometer adaptor with typical electrometer front end with no readouts at all, outputs to a DVM.Any advice is appreciated .ThanksGeorge Dowell
Turn wire on DC clamp meter. Is it ok? - Page 1
Forum section: electronics / testgear

author: 001
author_rank: Super Contributor
timestamp: August 01, 2019, 12:14:45 pm
content: Hi!We can boost AC measurments x10 by simply 10 turns on a clamp meterCan I boost DC measurments same way?

author: NiHaoMike
author_rank: Super Contributor
timestamp: August 01, 2019, 01:03:05 pm
content: Works the same way. In either case, it will substantially increase the series inductance.
should i fix or replace my old Sencore LCR Meter  - Page 1
Forum section: electronics / testgear

author: radiorich
author_rank: Newbie
timestamp: March 05, 2019, 04:30:15 am
content: Hello Guys,My old friend LCR meter made by Sencore stopped working it's a LC53 should I try fixing it or replace it with a better unit.Sincerely Radiorich

author: Chris56000
author_rank: Frequent Contributor
timestamp: March 08, 2019, 01:43:49 am
content: Hi!These instruments are the equivalent of our "Avo" brand on my side of the Atlantic and are going for just as silly prices as Avo does over here!Sencore circuit diagrams are appallingly badly drawn and labelled, they're like an ancient Chinese Puzzle!The instruments are robust and well made, well worth repairing, but difficult to fault–find I'm afraid because of the awful drawings, but I can certainly offer advice and assistance, if you post some more details and pictures of the problem!Chris Williams

author: coromonadalix
author_rank: Super Contributor
timestamp: March 08, 2019, 03:16:15 am
content: some links ? some of them dont have schematics, but they have some check procedures, good luckfirst :http://w.ko4bb.com/getsimple/index.php?id=manuals&dir=06_Misc_Test_Equipment/Sencore/Sencore_LC53_Z-Metersecond (click start free download) :https://www.download-service-manuals.com/en/manual.php?file=Sencore-5918.pdfhttps://elektrotanya.com/sencore_lc53_parts_sch.pdf/download.htmlhttp://bama.edebris.com/download/sencore/lc53/LC53%20OPS.pdfhttp://antiqueradios.com/forums/viewtopic.php?f=8&t=190926http://exodus.poly.edu/~kurt/manuals/manuals/Other/SENCORE%20LC53%20OPS.pdfthe most searched docs :SENCORE LC53 OPS.pdfsencore_lc53_1997.pdf

author: LC53usr
author_rank: Newbie
timestamp: April 09, 2019, 08:44:16 pm
content: What type of problems are you having?I have a LC53 that test inductors and leakage but won't check caps. Found some bad parts but still haven't got it working properly.thank you for the response.Tony

author: Sencoretech
author_rank: Contributor
timestamp: August 01, 2019, 01:02:05 pm
content: Quote from: LC53usr on April 09, 2019, 08:44:16 pmLate to the party but the LC53 is terribly hard to troubleshoot. First thing I would do is check the solder on the two connectors between the PCB boards. Also worth cleaning could be as simple as a bad connection.
GW Instek GDM-8135 Service Manual Needed - Page 1
Forum section: electronics / testgear

author: Busta
author_rank: Newbie
timestamp: July 31, 2019, 05:09:31 pm
content: I recently bought a used GDM-8135 on EBAY. It only reads voltages on the 2 lowest ranges.Resistance is ok. Does anyone have a PDF of the service maunal. There are no schematics in the owner's manual. Nothing obvious or burned upon inspection. Any help is much appreciated!
Keithley DAQ6510 6.5-Digit Data Acquisition & Multimeter Review, Teardown & Exp. - Page 1
Forum section: electronics / testgear

author: Hugoneus
author_rank: Frequent Contributor
timestamp: July 29, 2019, 01:48:55 am
content: You can watch the video here: [48 Minutes]youtu.be/Lezd27BzQLoCheers!

author: voltsandjolts
author_rank: Unknown
timestamp: July 29, 2019, 08:35:19 am
content: Fantastic video, thank you.The HRC fuse contacts look a little close to that metal shield plate though.

author: Hugoneus
author_rank: Frequent Contributor
timestamp: July 29, 2019, 12:52:03 pm
content: Quote from: voltsandjolts on July 29, 2019, 08:35:19 amI’ll open it and make an exact measurement. It also looks a little closer than it is on camera because of the slight angle.

author: HighVoltage
author_rank: Super Contributor
timestamp: July 30, 2019, 10:39:00 am
content: Great review, thank you!Interestingly my DMM6500 as a few less pre installed trigger setups than the DAQ6510

author: Hugoneus
author_rank: Frequent Contributor
timestamp: July 31, 2019, 08:16:48 pm
content: Quote from: HighVoltage on July 30, 2019, 10:39:00 amProbably because of DAQ capabilities. Did you also update to latest firmware?
Interfering signal in channel1 of Rohde & Schwarz RTA4004 - Page 1
Forum section: electronics / testgear

author: egonotto
author_rank: Super Contributor
timestamp: July 29, 2019, 08:49:35 pm
content: Hallo,in my RTA4004 there is in most time an interfering signal in channel1 of Rohde & Schwarz RTA4004 (scrprint_290719i.png).In (scrprint_290719j.png) the interfering signal is not to see.The other channels are not concerned.Are in RTM and RTB also interfering signal to see?Best regardsegonotto

author: YetAnotherTechie
author_rank: Regular Contributor
timestamp: July 31, 2019, 05:30:07 pm
content: Hello Egonotto,I have a RTM3004 and checked. I was able to reproduce your issue in channel one and very lightly in channel 2, there are bursts of 217.4khz usually lasting around 5ms or more. See picture 1.i hope that you confirm that you did the test without probes.Second picture shows an oscilloscope probe held near the screen. You are picking up interference from the lcd on the open BNC connector.With the ports plugged by an oscilloscope probe there is no issue.

author: egonotto
author_rank: Super Contributor
timestamp: August 01, 2019, 12:41:37 am
content: Hello YetAnotherTechie,thanks for your answer. Yes I did the test without connecting probes. It seem the effect on C2 is on my scope lesser.If I take 50Ohm the interference on c1 is away.Best regardsegonotto
HP Instrument BASIC (HP 35665A) - Page 1
Forum section: electronics / testgear

author: Stray Electron
author_rank: Super Contributor
timestamp: July 30, 2019, 11:36:16 pm
content: I picked up an HP 35665A Dynamic Signal Analyzer a while back but I'm just now getting around to spending some quality time with it. Among other things it has the optional HP Instrument BASIC in it but I haven't found (reasonably priced) manual for it yet so here goes: 1. Does anyone know how similar the IBASIC is the old HP Rocky Mountain BASIC? I used that a long time ago but no experience with IBASIC 2. Is the optional IBASIC in the HP 8712, HP 4352A, HP 8920 other instruments the same and can I use the IBASIC manual for one of those? 3. Looking at some of those manuals I notice that HP says that they apply to instruments that were made in Japan and labeled "JPIKE" on the back. Does anyone know what JPIKE is? Finally does anyone know if the optional IBASIC runs on the same CPU as the DSA (or other) instrument or does it get it's own CPU, ROM and RAM as part of the option package? (Like the HP Viper and Hyper Viper cards for the PC did.)

author: edpalmer42
author_rank: Super Contributor
timestamp: July 31, 2019, 01:13:36 am
content: Is the IBasic info at the HP Computer Museum of any help?http://www.hpmuseum.net/display_item.php?sw=441Ed

author: KE5FX
author_rank: Super Contributor
timestamp: July 31, 2019, 01:31:58 am
content: I don't have any info on the 35665A BASIC language, but the vast majority of info for the 35670A will likely apply to the 35665A as well, such asUsing Instrument BASIC With the Agilent 35670A. (Edit: summary of differenceshere.)The BASIC interpreter was a software-only option, so it most likely runs on the 68020 alongside everything else. The memory space is shared with data and waterfall records, the capture buffer, and the volatile RAM disk.

author: Stray Electron
author_rank: Super Contributor
timestamp: July 31, 2019, 02:00:17 am
content: Quote from: KE5FX on July 31, 2019, 01:31:58 amThanks! I had found IBASIC manuals for the HP 35670A but they showed version 2.0 and I wasn't sure of the differences to the version found in the HP 35665A but your 2nd link answers that question.

author: texaspyro
author_rank: Super Contributor
timestamp: July 31, 2019, 03:07:01 am
content: Quote from: KE5FX on July 31, 2019, 01:31:58 amI seem to remember reading that on some machines the BASIC was a hardware/software option. The hardware option was a PAL or ROM that the software had to see. I think it output the string "IBASIC" or something like that.
Fluke 8840A NOS VFD Display board on Ebay - Page 1
Forum section: electronics / testgear

author: darky8
author_rank: Contributor
timestamp: August 07, 2019, 08:29:49 am
content: Hi Folks, Just a quick tip-off.Just purchased a new-old-stock VFD display board for my Fluke 8840A Multimeter after I broke mine.These are rare as hen's-teeth and there's one left.https://www.ebay.co.uk/itm/333289612654?_sp=p2488212.m41214.l9765
Fluke 8000a revival  - Page 1
Forum section: electronics / testgear

author: soundtec
author_rank: Regular Contributor
timestamp: January 20, 2018, 03:51:52 am
content: Hi ,I have a fluke 8000a series meter, the usual carry on ,dud display ,damaged resistor network that feeds the display , Im not certain on the condition of led driver ic .My question is does anyone know a suitable replacement seven segment numerical led module ,off the shelf, that will work with this unit?The other bits ,I think should be easy to track down .Im not into spending massive money for 'unobtainium' fluke spares ,but I am willing to spend a bit of time to try and get this unit going again.Any suggestions greatly appreciated .

author: Eagle72
author_rank: Newbie
timestamp: May 22, 2018, 01:50:17 am
content: The Fluke manual shows the driver IC  as an SN7447AN.Compare it's data sheet to a TI DM7448N driver IC.If usable, Radwell in NJ shows them in stock for $3.61They also show some 7-seg LEDs as well, usability is your call.

author: MDemerse
author_rank: Newbie
timestamp: July 29, 2019, 04:21:57 pm
content: You might also want to checkhttps://www.axcontrol.com. They often have the same kind of stock Radwell has on hand.
Quick 957dw vs quick 857dw vs zd939l - Page 1
Forum section: electronics / testgear

author: Hans578
author_rank: Newbie
timestamp: July 28, 2019, 04:55:53 pm
content: Hello. Im wondering does anyone has quick 957dw or 857dw? They sell them in ebay/ali for about 100 euros. They are definitely fake. Just wondering is it worth to buy one? Also i don't get it why 857dw is 580W and newer version is only 400W? Is there a point to buy 400W at all when u can buy 580W one? 580W should be pretty decent though. Here in europe i could buy zd939l for about 60 euros. Its only 320W though.Generally i would like to buy hot air station. My budget is 150 euros max. All suggestions are welcome.

author: Chriss
author_rank: Frequent Contributor
timestamp: July 28, 2019, 05:03:07 pm
content: Hi!I have one of thata type of hot air station but with a soldering iron too.I use it very frequently many years ( ~15y. ) and had never problem with.Maybe the price is a bit high...Sent from my SM-J500F using Tapatalk

author: edavid
author_rank: Super Contributor
timestamp: July 28, 2019, 06:16:57 pm
content: A real Quick 957DW+ only costs about $90 in the US. Is there no Quick distributor in Germany?

author: Hans578
author_rank: Newbie
timestamp: July 28, 2019, 06:34:12 pm
content: Quote from: Chriss on July 28, 2019, 05:03:07 pmWhich one?

author: Hans578
author_rank: Newbie
timestamp: July 28, 2019, 06:39:24 pm
content: Quote from: edavid on July 28, 2019, 06:16:57 pmYes i seen that. I haven't found any lower end quick stations in Europe. No idea why. In Europe they would be a bit more expensive anyway since they have to pay import taxes. I know Eleshop is selling Quick 861dw for around 300 euros, but thats too much for me. I don't need so much power. Other than that i haven't seen any. I would actually even pay for original Quick 957dw 130-140 euros(ordering directly from USA), but they are all 110v ones and no point to pay that price for 110v.Anybody knows why 957dw has almost 200W less power?
Teardown, Repair and Analysis of an Anritsu MS2721B 7.1GHz Spectrum Analyzer - Page 1
Forum section: electronics / testgear

author: Hugoneus
author_rank: Frequent Contributor
timestamp: November 05, 2018, 05:56:41 pm
content: You can watch it here: [25 Minutes]youtu.be/1_M-Wccn2w8More episode at The Signal Path:www.TheSignalPath.com

author: analogRF
author_rank: Super Contributor
timestamp: July 31, 2019, 01:31:38 am
content: Hi ShahriarI know this is very old and you have probably sold the SA by now, but I hope you can still help meI have got one of these MS2721B and the previous owner has removed the internal SD card (but clean with no damageCould you please explain a bit how you made that new SD card with operating system on it? Do you have the disk image?thanks
Senior Voltohmyst WV-98C Required Voltage - Page 1
Forum section: electronics / testgear

author: Cyberdragon
author_rank: Super Contributor
timestamp: March 11, 2019, 07:26:54 pm
content: So apparently, the VTVM I've been using for years is actually a WV-98CX which is actually rated for 220V!(never read the back). So why has it been working? I'll open it up again to check for obvious signs of conversion, or do these things just not care (as long as you don't overvolt it).

author: schmitt trigger
author_rank: Super Contributor
timestamp: March 11, 2019, 07:44:02 pm
content: Measure the heater voltage.It would be surprising that electron emission would still be possible at half the heater voltage.Unless on the dual triode tube, very likely a 12AX7 or ECC83, originally wired in series, was rewired in parallel.But I am only making a wild guess.When you investigate and find out, please post here!!

author: bd139
author_rank: Super Contributor
timestamp: March 11, 2019, 07:47:40 pm
content: Better than being set for 110v on a 220v supplyI have run Heathkit VTVM on ~ 74V off a couple of bench supplies. Worked fine.

author: Cyberdragon
author_rank: Super Contributor
timestamp: March 11, 2019, 08:00:35 pm
content: The heaters wouldn't be the only thing, the B+ would also be half. I have compared the guts to a recently purchased working 120V model and they are very similar inside (just some different component styles). Even the resistor for the neon light is the same, which I would expect to be different on a different voltage. So maybe someone broke the case and put the wrong case on (the front plate does not have the X on it either). But WTF, why would you put a case on that indicates the wrong voltage?!Damn good thing I didn't read the back if that's the case.I'll have to do some voltage checks to be sure though.

author: TheDog
author_rank: Newbie
timestamp: July 25, 2019, 10:46:20 am
content: I live in Europe / Denmark and some years ago aquired a WV-98C (RCA meatball). Used to be owned of some radio repair shop. And fitted with Danish 220 V plug anno 1960/1970. Now to the question: Any chance that this meter was made for / sold as 220 V AC supply in Europe / Denmark? And how do I tell? I took it a bit apart but could spot no large resistors in the 220 V supply line? The owner of the repair shop did that trick in one cheap HF-signalgenerator, so the idea was at hand? Hope you can help.

author: schmitt trigger
author_rank: Super Contributor
timestamp: July 25, 2019, 03:13:47 pm
content: Many US companies would build export models of their test equipment. About the only change, other than the plug, would be the power transformer.There must be some sort of identification or label, which tells you the mains voltage. I am surprised if there is nothing outside. But you may try to look into the power transformer, to see if it has any markings.

author: TheDog
author_rank: Newbie
timestamp: July 28, 2019, 06:32:11 am
content: Thanks. I already did that. No labels / markings. I will probably have to ramp the 117 --> 220 V input voltage up slowly until I have 6.3 V on the filament heater output of the transformer.