Products > Test Equipment
Conversion of 500MHz TDS744A to 1GHz TDS784A
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Jwalling:
Not surprising. R1064 should be installed. The other three should be removed.  ;)
Vlad_01:
TDS744  (without "A")
firmware v.1.0e
Options 13, 1F,1M, 2F

All combinations of resistors are tried, no result.
It looks like I should change the firmware.
On what to change and where to look the instruction?
What is the difference between TDS744 and TDS744A?



There were 3 lintels - R1061, R1062 & R1064.
All 16 combinations are checked, no result.

Detailed photo boards in one file (40 Mb)
http://www103.zippyshare.com/v/c8iduaXp/file.html
oaba:
Vlad_01
I have the same problem. Have you find it out?
What are those configuration 0 resistor are for at tds744?
I removed the capacitors anyway.
Jwalling:

--- Quote from: oaba on August 30, 2018, 10:29:54 pm ---Vlad_01
I have the same problem. Have you find it out?
What are those configuration 0 resistor are for at tds744?
I removed the capacitors anyway.

--- End quote ---

The TDS784A did not exist when the non-suffixed TDS744 did. I think removing the caps and installing R1064 only will let the scope sample @ 4GS/s on 1 channel and 1GS/s on four channels simultaneously, but it will still say that it's a TDS744.
oaba:
I got it.
Is it possible to modify the firmware? Is that in the NVRAM.
Have you replaced it or saved it?
To prevent future problems.
Thanks.
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