One-dimensianal PSD
Hoffa
Posts: 46
Hi,
I´m trying to use a PSD from Hamamatsu. But I don´t understand how to make it work. The datasheet just say that one should connect anode 1 and anode 2 to two different tins and·cathode (common) to the second·two. What do they mean by anode 1 and 2, I don´t understand how to connect the sercuit?
Here is the address to the datasheet:
http://www.elfa.se/se/images/k-data.gif
/Hoffa
I´m trying to use a PSD from Hamamatsu. But I don´t understand how to make it work. The datasheet just say that one should connect anode 1 and anode 2 to two different tins and·cathode (common) to the second·two. What do they mean by anode 1 and 2, I don´t understand how to connect the sercuit?
Here is the address to the datasheet:
http://www.elfa.se/se/images/k-data.gif
/Hoffa
Comments
You need to start by understanding how a PSD works, here is a link to a proper datasheet, the hamamatsu site can supply more:
sales.hamamatsu.com/assets/pdf/parts_S/S6407_etc.pdf
Basically the detector acts like a pair of phototransistors, if the light is in the middle then they are both on by the same amount, if the light is to one side then one is on more and one less.
You can use a circuit to normalize the output so it is not dependant on intensity only position:
physerver.hamilton.edu/people/pmillet/aeroacoustics/tptlightdeflection.pdf
Cheers,
Graham