Products > Test Equipment

Tektronix TDS754C not communicating over GPIB in unprotected mode

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amaschas:

--- Quote from: TERRA Operative on December 10, 2024, 04:05:44 am ---Nice.

Also, you can activate options 2C and 2F without having to add any additional hardware if they are not already acivated.

--- End quote ---

Awesome, just went and did that, thanks for the heads up!

I'm now onto tackling the hardware problems affecting channel 4. I thought the first one was going to be straightforward:


--- Code: ---diagnostic test failure, digDataFormatDiag1MMem,  ERROR!!in demux 200 ,i= 9 memBaseAdr 0x7380014=  data = ffff8001, expectedData[i] = 0"
--- End code ---

I believe that indicates an issue with SRAM IC U210, which I've actually gone ahead and replaced, but still seeing the error. I'm ordered a socket that will allow me to test the SRAM I pulled from the device to see if its still good, and then I'll probably systematically go through the ICs in the demux 200 range until I find a bad one.

The second error I can't find a lot of info about:


--- Code: ---Internal adjustment range exceeded, 1.0916 => Balance dac #4 (ID #147)"
--- End code ---

Though the general advice I've seen around DAC errors is to hit the ICs with a bit of hot air in case there's a solder joint that's gone bad over the years. Not really sure if the balance DAC is distinct from the regular DAC either. But one thing at a time I suppose.

Might also be worth making a new topic about these. I've noticed that its tricky to find information when its buried in a thread about something else entirely, and I'm hoping this odyssey can be useful to others going down this road.

Tantratron:

--- Quote from: amaschas on December 11, 2024, 05:22:05 am ---Might also be worth making a new topic about these. I've noticed that its tricky to find information when its buried in a thread about something else entirely, and I'm hoping this odyssey can be useful to others going down this road.

--- End quote ---
Yes indeed, best to start a new topic to avoid confusion or mixed cross information... GPIB is one topic, acquisition board DAC and SRAM another topic
You might first check eventually other threads, the issue of DAC/SRAM has been tackled by previous members.

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