remote model control with a microprocessor - PCM instead of PDM

remote model control with a microcomputer elektor february 1985 Photo 1. For our tests and evaluation we used a Multiplex "Royal mc". The transmitter can be switched between pcm and pdm. The basic ver- sion has four channels and may be extended to up to fourteen functions. Adaption to the control characteristic of different models is possible by means of a "sort module" (ROM). PCM instead of PDM remote model control with a microcomputer As was to be expected, it has not taken very long after the microcomputer began to be used in good-quality portable radio receivers for it to encroach upon remote model control systems. Remote control using pcm (pulse code modulation) is a typical microcomputer application: a long overdue innovation. 2-34 In binary pulse code modulation only cer- tain discrete values are allowed for the modulating signals. The modulating signal is sampled and any sample falling within a certain range of values is given a discrete value. Each value is assigned a pat...