Garmin GTN 625, Installation Manual

Page: 26 / 254

GTN 625/635/650 TSO Installation Manual 190-01004-02
Page 1-8 Rev. F
1.3.6 VOR Specifications (GTN 650 Only)
Characteristics Specifications
Receiver Audio Sensitivity At -103.5 dBm (S+N)/N is not 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 when:

RF signals are absent.

9960 Hz modulation is absent.

either one of the two 30 Hz modulations are absent.

the level of a standard VOR deviation test signal produces
less than a 50% of standard deflection.
AGC Characteristics
From -99 dBm to -13 dBm input of a Standard VOR Audio Test Signal,
audio output level does not vary more than 3 dB.
Spurious Response Greater than 60 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 Up to 100 mW into a 500

load.
Audio Response
Less than 6 dB of variation between 350 and 2500 Hz. In voice mode,
an IDENT tone of 1020 Hz Ident Tone is attenuated at least 20 dB
down.
Audio Distortion
The distortion in the receiver audio output does not exceed 10% at all
levels up to 100 mW.
Selectivity 6 dB BW is greater than 16.5 kHz. 69 dB BW is less than 36 kHz.