Garmin GNC 420A Installation Manual page 13

1.3.5 VOR Specifications (GNS 430 Only)
Regulatory Compliance
Receiver Audio Sensitivity
Course Deviation Sensitivity
Flag
AGC Characteristics
Spurious Response
VOR OBS Bearing Accuracy
Audio Output
Audio Response
Audio Distortion
400 SERIES INSTALLATION MANUAL
P/N 190-00140-02
TSO C40c, JTSO-2C40c, RTCA DO-196, EuroCAE ED-22B
At -103.5 dBm (S+N)/N shall not be less than 6 dB.
-103.5 dBm or less for 60% of standard deflection.
The VOR Course Deviation Flag must be flagged:
a) in the absence of an RF signal.
b) in the absence of the 9960 Hz modulation.
c) in the absence of either one of the two 30 Hz
modulations.
d) When the level of a standard VOR deviation test signal
produces less than a 50% of standard deflection.
From -99 dBm to -13 dBm input of a Standard VOR Audio
Test Signal, audio output levels shall not vary more than 3
dB.
Greater than 80 dB.
The bearing information as presented to the pilot shall not
have an error in excess of 2.7° as specified by RTCA DO-196
and EuroCAE ED-22B.
A minimum 100 mW into a 500 Ω load.
Less than 6 dB of variation between 350 and 2500 Hz.
Except the 1020 Hz Ident Tone is at least 20 dB down in
voice mode.
The distortion in the receiver audio output shall not exceed
10% at all levels up to 100 mW.
Page 1-5
Page Rev L