FSG 90 System
3 Installation
December 2014 FAV_D10024 23
Electronic variometers seldom comply with airborne type approval requirements. All
of the known models at printing time of this manual have to our knowledge a too high
radiated RF interference emission. In transmit mode, the operator may even be faced
with radio energy based functional variometer influence. Slight improvement may be
achieved when the variometer wiring is both shielded and routed not in parallel but
distant to the radio wiring. Eventually, short but bulky grounding contacts between all
radio and variometer cases may improve this E-variometer RF susceptibility.
Further measures to improve RF immunity may be obtained from variometer
manufacturer.
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