EMSIS - AHRS - LX avionics
Contents
1. EMSIS AHRS September 2012 Stand Alone Version EMSIS AHRS User s manual for stand alone version 1 General description The system consists of one 80 mm panel cut out compatible unit with colour graphic display and 6ix push buttons The main modules of the unit are microcontroller sensor module IAS and altitude AHRS module with GPS receiver 1 1 Commands On the front of the unit there are six push buttons and all commands should be executed using those buttons A VY QNH input command M after long press pitch reset to zero v not active command only active in setup O not active x escape only active in edit CO mode selector after short press the unit will change from navigation page to setup and vice versa 4 1870 Fogi Loo m GHH 1 1 1 Setup La 29 23 intig Setup menu offers 6 items To scroll use AW buttons and to start edit use v EMSIS Menus are PW prevented and the password is 314 Er a atan Config don t use by standalone variant Config Sensors don t use by standalone variant O Cara Dri Calibration don t use by standalone variant O n Airspeed input of colour arcs of IAS Calibration Units input of local used units Service see 4 1 Airspeed Lirdts oo 2 Display description Track information Altitude l F TO Poet EMSIS AHRS September 2012 Stand Alone Version 3 Connection of power and pressure 3 1 Power EMSIS unit receives its power via power wi2. res which are on the back side of the unit Applied voltage should not exceed 16V DC There is no fuse inside the unit so it is absolute obligatory to use external fuse 2A 3 2 Pneumatic connections EMSIS AHRS unit should be connected to aircraft static and total pressure sources Both is necessary to ensure accurate air speed and altitude indication and also function of AHRS DAQU also needs MAP input 3 3 GPS antenna GPS information is necessary for accurate AHRS function therefore a GPS antenna should be installed somewhere where good GPS signal reception will be ensured 3 4 BUS connectors There are two bus systems used by NESIS AHRS 485 bus can be used to drive 57 mm or 80 mm indicators Following indicators can be connected to EMSIS AHRS 485 bus IAS indicator altimeter variometer 3 5 OAT sensor OAT sensor is a part of delivery and should be placed on a position where the temperature will match outside air temperature as much as possible 3 6 Connection diagram Ptot total pressure pitot Pst Static pressure GPS GPS antenna connection OAT OAT sensor connection 485 connection of indicators ENC encoder connection aA CAN not occupied Pic Pigi Gps CAN SAN in case of using of external encoder G solution for QNH input use this plug Konordia d o o EMS ARRS sariol n 022a EMSIS AHRS September 2012 Stand Alone Version 4 Final check and adjustment After ins
3. tallation works apply power to the system and provide functional check as follows check OAT indication check altitude reading check IAS reading check QNH adjustment 4 1 AHRS adjustment After installation final adjustment should be provided Level the aircraft roll and pitch as for the cruise flight and provide following procedure switch to SERVICE menu of Setup input PW 2006 a very typical message on the display will follow Calibrating please wait don t move the aircraft during the procedure the process will finish automatically check position of the aircraft symbol if correct 5 Technical specifications and limits power input 12 16 V DC no fuse built into the system use external fuse 2A power drain approximately 200 mA
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