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