Bedienungsanleitung Garmin GNS 430 (Seite 14 von 124) (Englisch)

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Page 1-6 400 SERIES INSTALLATION MANUAL

Page Rev L P/N 190-00140-02

1.3.6 LOC Specifications (GNS 430 Only)

Regulatory Compliance TSO C36e, JTSO-C36e, RTCA DO-195 CLASS A, EuroCAE

ED-46B

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 LOC Course Deviation Flag must be flagged:

a) in the absence of an RF signal.

b) When either the 90 or 150 Hz modulating signals is

removed and the other is maintained at its normal 20%.

c) In the absence of both 90 and 150 Hz modulation.

d) When the level of a standard localizer deviation test

signal produces less than a 50% of standard deflection.

AGC Characteristics From -86 dBm and -33 dBm input of a Standard VOR Audio

Test Signal, audio output levels shall not vary more than 3

dB.

Selectivity Nose Bandwidth: The input signal level required to produce

the reference AGC voltage shall not vary more than 6 dB

over the input signal frequency range of ± 9 kHz from the

assigned channel frequency.

Skirt Bandwidth: The input signal level required to produce

reference AGC voltage shall be at least 70 dB greater than

the level required to produce reference AGC voltage at the

assigned channel frequency at ± 36 kHz from the assigned

channel frequency.

Spurious Response Greater than 80 dB.

Centering Accuracy

Typical 0 ± 3 mV (Max error 9.9 mV per RTCA DO-195).

Audio Output

A minimum 100 mW into a 500 Ω 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 shall not exceed

10% at all levels up to 100 mW.

1.3.7 Glideslope Specifications (GNS 430 Only)

Regulatory Compliance TSO C34e, JTSO-C34e, RTCA DO-192, EuroCAE ED-47B

Sensitivity -87 dBm or less for 60% of standard deflection.

Centering Accuracy

0 ± .0091 ddm or 0 ± 7.8 mV

Selectivity

The course deviation shall be 0 ddm ± .0091ddm when using

the Glideslope Centering Test Signal as the RF frequency is

varied ±17 kHz from the assigned channel.

At frequencies displaced by ±132 kHz or greater, the input

signal shall be at least 60 dB down.

Standard deflection a) With a standard deflection ‘FLY DOWN’ condition (90 Hz

dominant), the output shall be -78 mV ± 7.8 mV.

b) With a standard deflection ‘FLY UP’ condition (150 Hz

dominant), the output shall be +78 mV ± 7.8 mV.

Flag The unit Flags:

a) When the level of a standard deviation test signal

produces 50% or less of standard deflection of the deviation

indicator.

b) In the absence of 150 Hz modulation.

c) In the absence of 90 Hz modulation.

d) In the absence of both 90 Hz and 150 Hz modulation.

e) In the absence of RF.

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