TDS7404 diagnostic error 521 -> who can help me with Eeprom content - Page 1
Forum section: electronics / repair

author: charlyd
author_rank: Frequent Contributor
timestamp: January 31, 2022, 09:05:48 pm
content: Hi today i did some diagnosing on checksum error in a TDS7404.i ran CalconStatus = CC_init(1) and now my checksum errors are gone but i ended up with error 521 popup. pointing to corrupted eeprom content -> "Factory Cal"any suggestion?Code:-> calConStatus = cc_init(1)0x16301e0 (tShell): cc_init: extended bank4 reset to factory0x16301e0 (tShell): Storing 300 bytes of service cal data from 0x15fb200 into EEPROM.0x16301e0 (tShell): EEPROM service cal data verified.0x16301e0 (tShell): cc_init: extended bank17 reset to factory0x16301e0 (tShell): Storing 82 bytes of service cal data from 0x1601160 into EEPROM.0x16301e0 (tShell): EEPROM service cal data verified.0x16301e0 (tShell): cc_init: bank 0 reset to factory0x16301e0 (tShell): cc_init: bank 1 reset to factory0x16301e0 (tShell): cc_init: bank 2 reset to factory0x16301e0 (tShell): cc_init: bank 3 reset to factory0x16301e0 (tShell): cc_init: bank 5 reset to factory0x16301e0 (tShell): cc_init: bank 6 reset to factory0x16301e0 (tShell): cc_init: bank 7 reset to factory0x16301e0 (tShell): cc_init: bank 8 reset to factory0x16301e0 (tShell): cc_init: bank 9 reset to factory0x16301e0 (tShell): cc_init: bank 10 reset to factory0x16301e0 (tShell): cc_init: bank 11 reset to factory0x16301e0 (tShell): cc_init: bank 12 reset to factory0x16301e0 (tShell): cc_init: bank 13 reset to factory0x16301e0 (tShell): cc_init: bank 14 reset to factory0x16301e0 (tShell): cc_init: bank 15 reset to factory0x16301e0 (tShell): cc_init: bank calConSt16atus reset to factory= 0x16301e0 (tShell0x): Optical hardware is not present.1335528: value = 262143 = 0x3ffffi am looking for a good (in cal) export of a Eeprom for TDS7404 ( i found an export (TDS7104 ACQ CAL MEM U1052 B021192 X24165) on this forum for the TDS7104 but that is unusable for the 7404 because content is totally different and so not compatible)

author: charlyd
author_rank: Frequent Contributor
timestamp: February 13, 2022, 05:38:15 pm
content: ...bump ...is there nobody who can help me which and export from the eeprom from a TDS7404. i am willing to pay for a good export, please DM me !

author: charlyd
author_rank: Frequent Contributor
timestamp: November 21, 2022, 08:36:18 pm
content: still looking for a good export from the 24165 can anybody help me out?

author: mikehank
author_rank: Regular Contributor
timestamp: November 22, 2022, 03:39:25 pm
content: I believe the calibration data is s/n dependent. I’m not sure another tds7404 calibration would help.

author: charlyd
author_rank: Frequent Contributor
timestamp: November 22, 2022, 07:31:28 pm
content: Hi mikehank, yes you are right of course but it is or a good calibration $$$ or content where the offset is nearly the same as in the unit where it is for... SPC is... an offset correction for the channels correlated to an earlier made calibration saved in the eeprom.

author: charlyd
author_rank: Frequent Contributor
timestamp: February 05, 2023, 09:50:30 pm
content: Is there anybody who can help me with getting the cal data from mycalcon files into my eeprom? i have content from the unit when it was still ok.would be nice if i could write the right settings back.@flyte maybe you can help me ?thanks in advance.

author: coromonadalix
author_rank: Super Contributor
timestamp: February 06, 2023, 01:20:01 am
content: be patient and waitif someone can help, you will know ....

author: calibrationfixture
author_rank: Regular Contributor
timestamp: February 09, 2023, 08:27:42 am
content: Hi,@ « Reply #1:I think your Setup is too optimistic (The Easy Way). The Circuit will load the Programmer. A nice Article (and Products):https://www.arlabs.com/incircuit.htmlProviding you with the Contents of a TDS7404 its Acquisition Board EEPROM means, as far as I see it now, desoldering the EEPROM and reading its Contents with a Programmer (The Hard Way). I don't have a TDS7404, but have a corrupt TDS5104 Acquisition Board EEPROM. In fact the same problem A fix is now on schedule.Succes and Patience,Calibrationfixture

author: calibrationfixture
author_rank: Regular Contributor
timestamp: May 20, 2023, 06:17:10 am
content: Hi Charlyd,Maybe the contents of a TDS7404B (you have these) its EEPROM are a solution. For the TDS5000 and TDS5000B Series these are interchangeable. Experience of andy2000:" I copied the contents from a good TDS5054B to a new chip, and no more error. Obviously, the calibration isn't to spec, but it's amazingly close, and good enough for casual use. I was a little surprised that the B version's data was compatible with the non-B scope. "Succes,Calibrationfixture