I tried to make a simple current to voltage convert for my Green PDs, and measure the noise. Hilarity did not ensue.
I made the following connections for an LT1792 (I also tried a LT1012).
| ___ 100k_____|__
| |\ |
Gnd-50Ohm-BNC----|- \ _______|___BNC____ to SR785
I stuffed this into my existing hydra board, and pulled out all the other components. My Noise looked WAY TOO HIGH
I was getting well over a uV/rtHz up to 800 Hz. This does not add up.
I also tried:
I am curious about:
There really has to be something stupid I am doing...