Option hack that 30 year old oscilloscope!
summary
A $160 eBay Tektronix scope gets concrete upgrades: firmware dumped over GPIB, RS232 console opened, strings and Ghidra reverse engineering used to find feature IDs that map to nonvolatile flash flags. Software options (video trigger, DSP/math) flip on by setting bits; the 120,000 samples option requires six missing RAM chips, bought from Chinese brokers and soldered in. Result: video trigger and FFT work immediately, 120k buffer works after RAM installation.
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chapters (7)
- 0:00Start
- 0:14Hacking a 30 Year Old Osmoscope
- 2:37Influence the Extracted Firmware
- 3:45Functions Symbol Table
- 4:40Command Line
- 6:57Hardware Accountant Query Function
- 8:13Video Trigger
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