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190-01004-02
GTN 625/635/650 TSO Installation Manual
Rev. F
Page 1-9
1.3.7 LOC 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
At -103.5 dBm, deviation output is not to be less than 60% of standard
deflection when a LOC deviation test signal is applied.
Flag
The VOR/LOC Course Deviation Flag is flagged when:
RF signals are absent.
9960 Hz modulation is absent.
one of the two 30 Hz modulations is 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.
Selectivity
6 dB BW is greater than 9 kHz
69 dB BW is less than 36 kHz
Standard Deflection
With a standard deflection ‘FLY LEFT’ condition (90 Hz dominant), the
output is +90 mV ± 9 mV.
With a standard deflection ‘FLY RIGHT’ condition (150 Hz dominant),
the output is -90 mV ± 9 mV.
Spurious Response
Greater than 60 dB.
Centering Accuracy
0 ±0.01023 ddm or 0 ±9.9 mV.
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.
Содержание GTN 625
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