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Hi Jared, Here is the new method: /g/TekScopes/files/AM503B%20Calibration%20without%20GPIB/AM503B_AM5030%20NVRAM%20Replacement_V01.pdf Many greetings Rico

Hi Jared, With this new method you don't need the "BusPirate" anymore. A normal programming device is already sufficient. Many greetings Rico

Hi Greg, I have to mention an important point here. Everything I have said applies only to the AM503B/AM5030. The "A" version is different. So you have a little more on this subject, here is another l

Hi Greg, The problem is, that not only the user data (front panel settings) but also the calibration data is stored in this SRAM. The description here: 156-3886-00 - IC, MEMORY; CMOS, SRAMS, 256 X 8,