🚀 go-pugleaf

In article <16B5D6AFD.D2KAK@VM1.CC.UAKRON.EDU>, D2KAK@VM1.CC.UAKRON.EDU writes:

>     In PCM radios, the information on stick position is transmitted
>to the receiver (also as a train of pulses) in the form of serial
>binary numbers. The length of the binary number determines the resolution
>of the system (hence 512 or 1024 bit resolution). A dedicated microprocesor
                      ^^^^^^^^^^^^^^^^^^^^^^^^^
>in the receiver then decodes the information and sends a pulse to the
>appropriate servo. This pulse is identical to the pulse sent in a standard
>system, which is why you can use servos interchangeably in both types of
>systems.

    This is the terminology used by Futaba in their marketing stuff, but
    is not correct from a technical point of view. The resolution is either
    512 or 1024 POSITIONS, which corresponds to 9 or 10 bits in a control
    word. I really don't know why they came up with this "1024 bit" 
    terminology other than thinking that the word "bit" has a suitably
    high-tech, computer-like connotation.

    Of course this doesn't detract from Kraig's fine explanation of the
    operation of receiver/servo subsystems, but I did want to point out
    how this terminology differs from that accepted in the rest of the
    digital electronics industry.
-------------------------------
Brent Hutto
hutto@SMTC.engr.scarolina.edu