Will someone explain SMPTE-292M section 8.1.11? I just happened to notice it and I don't understand.
".. the receiver must sense correctly the binary data in the presense of the superimposed interfering signal at the following levels:
below 5KHz <2.5V p-p
5 kHz to 27 MHz <100 mV p-p
above 27 MHz <40 mV p-p"