[sdiy] *EXT* Textronix TDS350 scope memory backup NVSRAM DS1630AB could be replacable by DS1230AB.. ?? YES !

[Ullrich Peter]

Hi Jean-Pierre!
Cool, that‘s good news! Thanks for sharing your experiences and solution.
Ciao
Peter

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________________________________
Von: Synth-diy <synth-diy-bounces at synth-diy.org> im Auftrag von Jean-Pierre Desrochers <jpdesroc at oricom.ca>
Gesendet: Wednesday, May 12, 2021 10:18:54 PM
An: Synth-diy at synth-diy.org <Synth-diy at synth-diy.org>
Betreff: *EXT* [sdiy] Textronix TDS350 scope memory backup NVSRAM DS1630AB could be replacable by DS1230AB.. ?? YES !


I just read the scope’s DS1630AB data then programmed a new DS1230Y-70IND+

I had on hand and BINGO  ! My TDS350 accepted it with no partitioning at all.
I programmed some setups in the scope’s memory, turned it OFF then back ON
and all the saved data was  there..

I’m SO glad ! No more worries about losing my scope’s calibration..
Just posted this on the Tektronix forum too.



De : Synth-diy [mailto:synth-diy-bounces at synth-diy.org] De la part de Jean-Pierre Desrochers
Envoyé : 8 mai 2021 14:00
À : 'synth-diy mailing list'
Objet : [sdiy] Textronix TDS350 scope memory backup NVSRAM DS1630AB could be replacable by DS1230AB..



In my quest to replace the ‘about to die’ DS1630AB 32k x 8 NVSRAM  inside my TektronixTDS350 scope
with the same IC because of the possible use of the partitionable memory this chip offers

Here is a picture of my TDS350 CPU+acquisition board:

http://www.arcenson.com/public/TDS350_CPU-ACQ_board.JPG<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.arcenson.com%2Fpublic%2FTDS350_CPU-ACQ_board.JPG&data=04%7C01%7CPeter.Ullrich%40kapsch.net%7C89b32e94600b4d3eddf008d91583d880%7C5f9ce5277e3e4e83a8a4b6c848f85ab5%7C1%7C1%7C637564478303169047%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=P%2BtiGzEHS%2BYm00VE%2B0PhjWb2hMuAyF%2BIHeH2iKYhXpM%3D&reserved=0>



I finally found the schematic for a very similar Tektronix scope.. the TDS320.

The TDS320 is a 100Mhz-500MS/s scope while my TDS350 is 200Mhz-1GS/s.

Since the differences between both could reside in the acquisition and time base speeds

It would be very possible both scopes use about the same CPU circuitry..

Here is a snapshot of the TDS320 oscilloscope CPU board:

http://www.arcenson.com/public/TDS320_CPU_board.jpg<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.arcenson.com%2Fpublic%2FTDS320_CPU_board.jpg&data=04%7C01%7CPeter.Ullrich%40kapsch.net%7C89b32e94600b4d3eddf008d91583d880%7C5f9ce5277e3e4e83a8a4b6c848f85ab5%7C1%7C1%7C637564478303179049%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=I6bBp8or8z8Zlxf1Tj%2BmwdapvWZyLQbRp80HjdaBcDQ%3D&reserved=0>



You can see that instead of a DS1630AB-120 like the TDS350 the TDS320 CPU uses a DS1230AB-120,

A standard 32k x 8 NVSRAM with no partitioning. Plain NVSRAM memory.

http://www.arcenson.com/public/TDS320_CPU_board_2.jpg<https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.arcenson.com%2Fpublic%2FTDS320_CPU_board_2.jpg&data=04%7C01%7CPeter.Ullrich%40kapsch.net%7C89b32e94600b4d3eddf008d91583d880%7C5f9ce5277e3e4e83a8a4b6c848f85ab5%7C1%7C1%7C637564478303179049%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=itLn17IxX92XsVOwTSVdY2g2%2Bb0stwl59L2PNfG7%2BVw%3D&reserved=0>



So when I replace the actual DS1630AB-120 I will first read it’s complete data
into a .BIN file, then program a standard DS1230AB-120 (which I have on hand)
with the just saved calibration data.. and place it in the new installed 28 pins socket, Then cross my fingers..

Hmmmm. Interesting..











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