NEW GUIDE
https://wiki.bcs.rochester.edu/ApLab/DPI%20Photodiode
ignore below this line
Photodiode
This remade photodiode operates exactly the same as the old one, but with the added feature of adjustable sensitivity.
Circuit layout
Adjusting Sensitivity
Move the jumper (the removable red object near the bottom-right of the board) to a different set of pins to the left or right.
There are 4 gain settings on this board. With increasing resistance corresponding to an increase in gain
1. 0 Ohm (gain=1)
2. 5.7M Ohm
3. 10M Ohm
4. 20M Ohm
So far, we've found 10M Ohm to be acceptable for our purposes
Photodiode Mount
The CAD file for the monitor mount is here:
Instructions to use photodiode with LabJack ADC board:
Scan Rate: 1024 Hz Number of scans: 2048