June 5, 2006


I am trying to get some old driver and pulser boards to work.After hooking up a power supply and replacing the differential line driver and a couple transistors on the driver board it seems to function fine.Most of the pulser boards are already in good shape.The next step is to see if I canít get a signal from a PMT using the pulser board.Along the way Iíll try to figure out why transistors keep blowing on the driver board.I have seen this occur only once and it was while adjusting the potentiometer.


June 6, 2006


Here are some signals from the PMT.Iíve used the pulser board labeled #1.