integration with PMTs

[untzag]

what connectors and voltage levels are needed?

[ksunden]

https://drive.google.com/file/d/1ANbrUyHa8OTWo-HXgesc6ZQYoqovqYBg/view?usp=sharing

Here is the new one for waldo, key paragraph:

Analog mode is set by applying a TTL high signal (+3.5 to + 5 V) on the Analog/Digital select line. The PMT analog high voltage is controlled by a 0 to +5 V input on the High Voltage control line corresponding to 0 to –1250 V on the PMT.

so there is one additional ttl signal here (which could probably be tied if needed, but may as well include it as it should be relatively easy (though may require a transistor to bring it up to 5V, I think they have a transistor for this pin in the original hardware)

9-pin CPC (circular plastic connector)

Pin #	Function	Value
1	Ground
2	NC
3	High Voltage Control	0 V to +5 V (linear correspondence to 0 V to –1250 V)
4	Power	+15 V
5	Analog/Digital switch	0 V for Digital, +5 V for Analog
6	Power	-15 V
7	NC
8	NC
9	NC

May require a 5V regulator (also to power the microcontroller anyway)

[ksunden]

https://neurophysics.ucsd.edu/Manuals/Hamamatsu/Hamamatsu%20M9011-9012%20Temperature%20Control%20and%20Power%20Supply%20Units%20for%20H7421-22%20Series.pdf

here is the datasheet for the ps table pmt controller board

Connector is a JST 2x10 (20 pin) connector

pins 17 (0-900 mV) and 18 (GND)