how to test the TDC sensor? 91 DX 1.5L

I'm not getting a spark and I think the TDC sensor inside the dizzy is bad but I have no idea how to test it. what are the specs for high and low voltages and resistance? I plan to take it out of the car and bench test the signal while turning the shaft by hand, but I only have a basic digital multimeter and a dinosaur crt oscilloscope which might not even work anymore...
any help will be much appreciated