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GNS 400W Series Maintenance Manual
Page 2-7
190-00356-05
Rev. A
Table 2-5. VOR Specifications (GNS 430W Only)
Receiver Audio Sensitivity
At -103.5 dBm (S+N)/N shall not be less than 6
dB.
Course Deviation Sensitivity
-103.5 dBm or less for 60% of standard
deflection.
Flag
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.
AGC Characteristics
From -99 to -13 dBm input of a Standard VOR
Audio Test Signal, audio output levels shall not
vary more than 3 dB.
Spurious Response
Greater than 80 dB.
VOR OBS Bearing Accuracy
The bearing information as presented to the
pilot does not have an error in excess of 2.7°
as specified by RTCA DO-196 and EuroCAE
ED-22B.
Audio Output
A minimum 100 mW into a 500 ohm load.
Audio Response
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.
Audio Distortion
The distortion in the receiver audio output does
not exceed 10% at all levels up to 100 mW.
