Author Topic: TDS220 & TDS210 EPROM swap  (Read 2192 times)

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Offline gkmaiaTopic starter

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TDS220 & TDS210 EPROM swap
« on: March 25, 2019, 01:07:00 am »
Is the only difference between the 220 (100MHZ) and 210(60MHZ) the programmed CMOS EPROM?

The IC #s, board layout, they are all identical. Absolutely no difference.

Has anyone ever tried to swap the eprom from a 220 into a 210?
 

Offline bitseeker

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Re: TDS220 & TDS210 EPROM swap
« Reply #1 on: March 25, 2019, 03:33:26 am »
One person tried the hack described in this thread, but it didn't stick even with a full re-calibration.
TEA is the way. | TEA Time channel
 
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Offline EEVblog

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Re: TDS220 & TDS210 EPROM swap
« Reply #2 on: March 25, 2019, 06:53:16 am »
Good question. You wouldn't think someone would have hacked probably the most popular scope in history...
 
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Offline gkmaiaTopic starter

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Re: TDS220 & TDS210 EPROM swap
« Reply #3 on: March 28, 2019, 09:44:46 am »
I got a TDS220 eprom and installed on a TDS210 board. 

The result is:
- Boot screen says it is a TDS210, not a 220.
- Boot screen failed the factory calibration
- When trying to self calibrate it exits the calibration procedure.

So the PCB has a 210 identification markup... now I have to find this thing...
« Last Edit: March 28, 2019, 09:47:27 am by gkmaia »
 

Offline coromonadalix

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Re: TDS220 & TDS210 EPROM swap
« Reply #4 on: March 28, 2019, 10:18:46 am »
maybe some smt resistor values  ??
 

Offline TERRA Operative

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Re: TDS220 & TDS210 EPROM swap
« Reply #5 on: March 28, 2019, 12:29:29 pm »
On a similar note, what is the latest known firmware for the 210 and addon modules?

Is it worth the effort to upgrade firmware to a later version if it was available?
Where does all this test equipment keep coming from?!?

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Offline gkmaiaTopic starter

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Re: TDS220 & TDS210 EPROM swap
« Reply #6 on: March 29, 2019, 01:12:05 am »
maybe some smt resistor values  ??

All resistors front and back around the processor block are exactly the same.  I will investigate more. Maybe something around the acquisition block?
 

Offline gkmaiaTopic starter

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Re: TDS220 & TDS210 EPROM swap
« Reply #7 on: April 16, 2019, 08:22:00 pm »
Anyone with a faulty TDS 220 or 210 board to sell? So I can put it apart and proceed with my experiments?
 


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