[sdiy] Textronix TDS350 scope memory backup NVSRAM DS1630AB could be replacable by DS1230AB..

[Jean-Pierre Desrochers]

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

 

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

 

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

 

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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