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Search found 78 matches

by fenugrec
November 18th, 2019, 10:49 am
Forum: General Discussion
Topic: Needed NVSRAM Dump of TDS640 or/and TDS600 field adjust software
Replies: 3
Views: 64

Re: Needed NVSRAM Dump of TDS640 or/and TDS600 field adjust software

google gives
https://www.eevblog.com/forum/testgear/ ... #msg539818
which has links for different versions which may need to be tested.
by fenugrec
April 11th, 2019, 7:22 am
Forum: Other or Discontinued Oscilloscopes
Topic: Tek 222 Schematic
Replies: 2
Views: 3519

Re: Tek 222 Schematic

Thanks for any ideas or schematics anyone might have. No schematics from me unfortunately. But you can start manually tracing the power input circuit starting at the battery terminals; that part of the circuit is probably not terribly complicated. Look for diodes or transistors that would not toler...
by fenugrec
February 22nd, 2019, 5:25 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS510A Acquisition Fail
Replies: 27
Views: 23278

Re: TDS510A Acquisition Fail

I suspect the multiplexer U200 to be the problem because U200 is cold (or not so hot than the others) Interesting observation. I'm not sure what to suggest. It's possible to call some of those functions (acqMemAddr tests, etc) from the service console, it might be possible to get them to test other...
by fenugrec
February 15th, 2019, 8:01 am
Forum: Other or Discontinued Oscilloscopes
Topic: TDS510A Acquisition Fail
Replies: 27
Views: 23278

Re: TDS510A Acquisition Fail

Hi, just had a quick look, and I see these ERRORID: 62 hardware error acq processor not responding ... -> ERRORID: 64 wrong hardware configuration Dsp D1 mem siz probe, expect: ffff, actual: 0 ERRORID: 64 wrong hardware configuration Acq number of digitizer probe, expect: 4, actual: 0 ... acqProcThe...
by fenugrec
February 9th, 2019, 6:27 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS510A Acquisition Fail
Replies: 27
Views: 23278

Re: TDS510A Acquisition Fail

vertAttenShiftReg **exp data=0 actual=1 for bit #31.... How can I do to see the whole message on the screen after actual.....? Hmm, I forget if you can see the full messages from the scope's UI. I don't think the extra details would help you much, though. Does look a bit like bad memory, but as you...
by fenugrec
May 27th, 2018, 6:17 am
Forum: Other or Discontinued Oscilloscopes
Topic: TDS420 Options Possible?
Replies: 17
Views: 32659

Re: TDS420 Options Possible?

Igorkasona1233 wrote:
May 26th, 2018, 9:07 am
How do i actually use the debug feature, just using the -d is not working :)
strange, either -d or --debug should work... did you compile yourself ?
by fenugrec
May 25th, 2018, 11:37 am
Forum: Other or Discontinued Oscilloscopes
Topic: TDS420 Options Possible?
Replies: 17
Views: 32659

Re: TDS420 Options Possible?

Yup that dump is the Main Firmware but i got an error before it all was dumped, im maybe using the wrong address range. Well I'm almost 100% sure you have the correct start address 0x0100 0000, because I recognize the first few hundred bytes as very similar to other ROMs. About your tekfwtool error...
by fenugrec
May 22nd, 2018, 7:25 am
Forum: Other or Discontinued Oscilloscopes
Topic: TDS420 Options Possible?
Replies: 17
Views: 32659

Re: TDS420 Options Possible?

nvLibrariansDiag The "Librarians" functions is how these scopes store cal, config and option data in the NVRAM, so this is a good sign - it's the same mechanism as on the later scopes. "Start PowerhOw Diag SAquence ccountant probe routines" they seem to be different every time i start the instrumen...
by fenugrec
May 8th, 2018, 7:01 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS420 Options Possible?
Replies: 17
Views: 32659

Re: TDS420 Options Possible?

Code: Select all

-> help
undefined symbol: help
Interesting, so this would be a very limited console. Can you paste the whole output produced by a normal boot ?

Some other commands you could try : "lkup" and "lkAddr 0x1000000", those may help find which other commands are defined.
by fenugrec
April 29th, 2018, 3:49 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS420 Options Possible?
Replies: 17
Views: 32659

Re: TDS420 Options Possible?

Igorkasona1233 wrote:
April 29th, 2018, 1:46 pm
I have once tried it over the Serial Port and only a view commands are working like clearing the Log, but all the other ones are not working
To be clear, I meant the serial "service console" connection only accessible inside the unit's case, not the regular RS232 interface on the back panel.
by fenugrec
April 28th, 2018, 6:15 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS420 Options Possible?
Replies: 17
Views: 32659

Re: TDS420 Options Possible?

As far as i have look it should be in the NVRAM, Ok i will try to dump the Firmware. It may take a bit until i have dumped it, i think it only works over GPIB not over the serial. I never tried it with my interfaces to do this It *is* possible to dump the firmware over the serial console, but it's ...
by fenugrec
April 28th, 2018, 5:43 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS744A Error message digDataFormatDiag
Replies: 10
Views: 20546

Re: TDS744A Error message digDataFormatDiag

digSpeedMemDiag, ERROR !!U206 MemAddr = 0x73a2b2a data = 0x35 exp = 0x25, Interesting, in this case it was able to figure out the error was in U206. It calculated the two digits "06" by doing ((memaddr - 0x7380000 >> 1) & 0x0F) + 1 If we apply the same calculation to your other error at 0x738002c, ...
by fenugrec
April 27th, 2018, 8:12 am
Forum: Other or Discontinued Oscilloscopes
Topic: 2445a with GPIB
Replies: 1
Views: 6431

Re: 2445a with GPIB

Qu66nman wrote:
April 25th, 2018, 10:16 am
Any idea on how to turn off the LOCK mode?
Check for DIP switches at the back of the unit (those that would set the GPIB address), sometimes one of them can set modes like this. Otherwise you might have a more serious problem like the CPU not booting properly.
by fenugrec
April 27th, 2018, 7:57 am
Forum: Other or Discontinued Oscilloscopes
Topic: TDS744A Error message digDataFormatDiag
Replies: 10
Views: 20546

Re: TDS744A Error message digDataFormatDiag

I've just got an old TDS744A me too - what fw version is yours ? ERROR!!in demux 200 ,i= 21 memBaseAdr 0x738002c= data = 200, expectedData[i] = 1200 There might be a service function to loop test a specific address, but I'm not sure. I'll try to check next time I'm looking at the firwmare. The TDS5...
by fenugrec
April 27th, 2018, 7:30 am
Forum: Other or Discontinued Oscilloscopes
Topic: TDS 3054C Front Panel Repair
Replies: 2
Views: 7682

Re: TDS 3054C Front Panel Repair

I looked closely at J700 I noticed there was solder bridging across pins 1 and 2: Certainly looks unusual, but could be normal. You could try removing that solder blob and seeing if there is indeed a trace connecting the two pins anyway, or continuity between them (with the connector unplugged to r...
by fenugrec
April 24th, 2018, 6:10 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS-524A NVRAM backup
Replies: 38
Views: 105468

Re: TDS-524A NVRAM backup

An interesting little titbit was that in order for the commands to actually write the value I had to un-write protect the NVRAM. yes, the only way to write to the NVRAM is to un-protect it... find a way to load the factory defaults into NVRAM so I don't keep getting Error log messages every time I ...
by fenugrec
April 24th, 2018, 6:00 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS420 Options Possible?
Replies: 17
Views: 32659

Re: TDS420 Options Possible?

Igorkasona1233 wrote:
February 5th, 2018, 7:02 pm
i hope this topic is not redundant, but i have been resceaching if it is possible to recover the lost options in a TDS420.
Most probably. And I'd also bet that they're saved in the NVRAM. If you have a firmware ROM dump I can take a quick look.
by fenugrec
April 12th, 2018, 1:36 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS520 problem ( Attn/acq interface )
Replies: 22
Views: 46456

Re: TDS520 problem ( Attn/acq interface )

Good, glad to hear you managed to fix it.
by fenugrec
April 3rd, 2018, 10:52 am
Forum: Other or Discontinued Oscilloscopes
Topic: TDS520 problem ( Attn/acq interface )
Replies: 22
Views: 46456

Re: TDS520 problem ( Attn/acq interface )

This is for U624.7 (CCATN) and U629.5 (ATTNSB)... Not good :( This is the next to must check ( U1324 ) ? U1324 ?? Why ? You checked the inputs of U624 and U629, and they look probably OK. You then checked the outputs of U624 and U629, and they look bad. What are the 2 possibilities that would expla...
by fenugrec
March 30th, 2018, 7:18 pm
Forum: Other or Discontinued Oscilloscopes
Topic: TDS520 problem ( Attn/acq interface )
Replies: 22
Views: 46456

Re: TDS520 problem ( Attn/acq interface )

Element of supply to U629 and U624 is ... ? Do you mean - what pin # are their supplies ? that's in their datasheets; on the schematics too; usually 7 and 14 on 74xxx logic ICs. - where the +5V is generated ? you'll have to look at the pin assignments for the connectors - probably J101. - if you me...

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