Duty cycle-based bit interface system

A duty cycle-based bit interface system, comprising:

• a first stage voltage converter unit in signal communication with a digital signal source, the first stage voltage converter configured to convert a digital voltage signal into an analog voltage signal;
• a plurality of second stage voltage converters in signal communication with the first stage voltage converter;
• the second stage voltage converters configured to convert the digital voltage signal into a scaled version of the same;
• an electronic sampling unit in signal communication with at least one of the second stage voltage converters, the sampling unit configured to sample a portion of the first stage analog output voltage signal during a sampling time period, the sampled portion having a duty cycle based-analog voltage signal during the sampling time period;
• and
• an electronic bit selector unit in signal communication with the sampling unit, the bit selector unit configured to output a bit enable signal that initiates a specific diagnostic test among a plurality of diagnostic tests based on the duty cycle of the sampled portion.