The setup; note that speakers are necessary
to hear the click associated with counts
(Jeff has the speakers!)
3-prong beaker clamp, a.k.a. The Claw
The radiation monitor is held by the claw;
note RJ-11 cable connected to side
Sort metal pieces into piles, place on
front bench
Connect 8-pin serial adapter to COM1;
connect RJ-11 cable
If necessary, use 8-pin to 25-pin adapter
The demo setup
The scope trace
The Geiger counter in action
Connections on back of counter:
Middle wire to Geiger Tube
Bottom wire to Oscilloscope
Gray wire to Timer
Brown wire to 120V AC
See-thru oscilloscope
Connection from counter
Geiger tube with Radium source
(in small oval containers: Watson has them!)
Geiger tube in stand over source
High voltage gets set to 1000 volts
Turn timer on, or counter won't work!