BENDIX/KING
KX 165A
Page 4-28
15610M00.RCD
Rev 0, Jun/2000
drive, Warning Flag drive, D-Bar drive, and Reference Stator drive for Indicator OBS resolver. Ex-
ternal system inputs to the board are return Stator signals from the OBS resolver.
Discrete logic level signals from the Main board control each of the flag driver circuits. Digitally
programmable Potentiometer C controls the D-Bar centering. A 5V reference is resistively divided
to produce a input voltage to the +RIGHT drive amplifier. The Input to the +Left drive amplifier is
one half the 5V reference. The Gain or slope of the D-Bar output is set by digitally programmable
potentiometer B. The serial control of these potentiometers come from the Main Board. A Buffer
amplifier isolates the recovered 30 Hz VOR Reference from the Main board signal and outputs it
to the external indicator OBS. The returning OBS stator signals are filters on the board and re-
turned to the Main Board. Here they are sampled and used for OBS position calculations.
Summary of Contents for Bendix/King KX 165A
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