358 B

416 output Pulse height observed to be about approx 5 volts Pulse width is approx 4 $\mu$s.

now from 427 output it trims to the wave of the analog function

427 delay .25 microsecond on .5 microsecond on 1 microsecond off 1 microsecond off 2 microsecond on

551 delay 100 delay

416a delay 100 delay 1.1 microsecond

Dial settings - 1000 Upper 50 Lower