Pulses from the Pulse-Amplifier are connected to Channel B on the back
of the Discriminator Box. Voltages that exceed a height set by
on the front panel are converted to +5 volt TTL compatible
pulses. The output of the Discriminator is sent to the Sqwaker
The Sqwaker will make a click sound every time the Discriminator sends
out a pulse. Use the Gain-knob to change the volume, and use the
Rate-knob to divide the click-sound rate if the sound is just static.
These pulses are then stretched to 140 nanosecond width and enter the
counter card mounted inside the computer (rphot).