Three_C 2000 for Windows

Three Channel Photometer Controller

Three_C 2000...

...reads the counts from the amplifier/discriminator circuit using the CTM-5 card.
...was written in Visual Basic.
...uses modified code from the older DOS version of THREE_C.
...uses Keithley DLL's for the CTM-5 card.
...includes a CTM-5 help file.
Pins 36, 19 and 17 of the CTM-5 card are tied to the amplifier/discriminator circuits of the left, center and right channels of the three channel photometer.
The gates (pins 37,18,16,14,12) are control by 0.1 second pulses from Counter 5 Ouput (pin 31).
Total counts and standard deviations are computed from the counts aquired during many 0.1 second integrations.
More notes are provided in the three-ring binder for the 41" telescope.