Garmin GDL 90 Installation Manual

Also see for GDL 90: Installation manual

Post-Installation Configuration & CheckoutGDL 90 Installation Manual 560-1049-00 Rev B 4-5Settings Format DescriptionZero is the minimum and 31 is the maximum setting.Air/Ground ThresholdSpeedinteger 30 to 100 kts.Applicable only for light aircraft (category 1), if air/ground switchis not connected, this threshold speed is used to determineair/ground status of aircraft. It is recommended that this be set to75% of stall speed.If zero is entered and air/ground switch is not connected, theaircraft is assumed airborne.Table 4-2. Data Items for APM initializationNOTEThe APM initialization procedure contains some settings that are reserved for futureupgrade and are not currently operational.4.2.1.3 APMread CommandThe APMread command displays the current APM settings. An example of APM settings is shownbelow:>apmreadField Name Option------------------------------------------------------Product ID 139-0362-010Emitter Category lightParticipant Address 77777775Anonymous Mode AvailableAltitude Filter Settings Above 0 - Below 0Display InstalledReceiver Mode Tx/RxCALL SIGN ALASKA11CAPSTONE DisabledFAIL Annunciator UAT fail lightAIR/GROUND Indication Airborne OpenTakeoff Ground Speed 70 ktsTCAS Not installedAltitude Source RxD Port 2 with baud rate 38400Control Panel Source via MFDAntenna Mode DualDC-Grounded UAT Antenna NoGPS Delay 0 nsTop Antenna Delay 0 nsBottom Antenna Delay 0 nsA429 Port 4 ADC - High SpeedAHRS Not installedAudio Air Volume 4