Just a heads up to anyone else who owns one of these ancient 141T Spectrum Analyzer mainframes, I'm working on some firmware for an STM32F7 touchscreen development board to act as an upgrade for the display on it.
At the moment, I have:
- Real-time spectrum display with graticules etc, that works on the slowest up to the fastest timebase
- A waterfall display mode
- A normalization function that makes insertion loss measurements much easier.
Here's a video of it working (lots of other RF stuff too on my channel if you're interested):
Code is available on github (very hacky at the moment):
https://github.com/schnommus/stm32_hp141_lcdMuch more work planned for this (want to use all the extra data available on the tracking preselector connector on the back for more features).
I'll post updates in this thread