Garmin GPS 400W Installation Manual

Also see for GNC 420AW: Maintenance manual Pilot's guide addendum Quick reference guide Pilot's Guide & Reference Pilot's Guide & Reference

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Garmin GPS 400W Installation Manual Manual pdf 20 page image

Page 1-6 GNS 400W Series Installation ManualRev. G 190-00356-081.4.5 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.FlagThe 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 signalproduces less than a 50% of standard deflection.AGC Characteristics From -99 dBm to -13 dBm input of a Standard VOR Audio TestSignal, audio output levels shall not vary more than 3 dB.Spurious Response Greater than 80 dB.VOR OBS Bearing AccuracyThe bearing information as presented to the pilot does not have anerror in excess of 2.7° as specified by RTCA DO-196 and EuroCAEED-22B.Audio Output A minimum 100 mW into a 500 load.Audio Response Less than 6 dB of variation between 350 and 2500 Hz. Except the1020 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% atall levels up to 100 mW.1.4.6 LOC 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.FlagThe 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 isremoved 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 signalproduces less than a 50% of standard deflection.AGC Characteristics From -86 dBm and -33 dBm input of a Standard VOR Audio TestSignal, audio output levels does not vary more than 3 dB.SelectivityNose Bandwidth: The input signal level required to produce thereference AGC voltage does not vary more than 6 dB over the inputsignal frequency range of ± 9 kHz from the assigned channelfrequency.Skirt Bandwidth: The input signal level required to producereference AGC voltage will be at least 70 dB greater than the levelrequired to produce reference AGC voltage at the assigned channelfrequency 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 load.Audio Response Less than 6 dB of Variation between 350 and 2500 Hz. Except the1020 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% atall levels up to 100 mW.