CTRV: it generates the
input pulse for the Blocking output driver
Two small smd boards were prototyped. All the components correspond to
the ones found in the Revision C
Capture of the Blocking driver outputing to a 50 Ohm
Different captures are shown below. The yellow trace represents the
received signal of the input circuit. The pink trace is the active low
output of the input optocoupler. The input threshold is set to 3.9V.