Garmin GMA 240 Installation Manual

Also see for GMA 240: Pilot's guide Installation manual

Contents

Garmin GMA 240 Installation Manual Manual pdf 14 page image

GMA 240 Installation Manual 190-00917-01Page 1-4 Rev. D1.3.3 Power Requirements1.4 Reference DocumentsThe following publications are sources of additional information for installing the GMA 240. Beforeinstalling the unit, the technician should read all referenced materials along with this manual.Music FunctionsMusic inputs (stereo): 2Music input impedance: 600 Ω (differential)Music gain: -20dB @ min volume, +26dB @ max. volume (typ.)Music input level:<200 mVrms for full power* output @ max music volume knobposition (typ.)3.5 Vrms max music input levelMusic bandwidth: 20 Hz to 20 kHz @ full power outputMusic distortion: <0.1% THD+N (typ.) @ full power, full bandwidthSpecial Functions: Front panel selection and volume controlFront panel control for muting by radios and ICSMuting by alerts configurable*Full power output refers to 300 mW into 50 Ω (three 150 Ω headsets in paralleleach driven to 100 mW)Front Panel Mini-Jack FunctionsInput Impedance: 5.1 kΩMusic Input: Auto detection of music source will use jack as Music 1Telephone Input: Auto detection of TEL source will use jack for TEL Telephonering signal is heard without TEL selectedTable 1-3 Power RequirementsCharacteristic SpecificationInput Voltage Range 11 to 33 VdcPower Input 4.3 W normal operation (310mA @ 13.8 V)7.5 W max. operation (540 mA @ 13.8 V)Table 1-4 Reference DocumentsPart Number Document190-00917-00 GMA 240 Pilot's Guide190-00917-02 GMA 240 Maintenance ManualTable 1-2 Electrical CharacteristicsCharacteristic Specification