190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft)Rev. 1 Page 5-55.3 PowerThe GTX 35R/45R is compatible with 14 VDC and 28 VDC aircraft electrical systems. The AIRCRAFTPOWER 2 input is diode-isolated from AIRCRAFT POWER 1 and is used for connecting to an alternatepower source, such as on an aircraft with two electrical buses.Table 5-3 Power Pins5.3.1 Power Configuration and Control InputsThe POWER CONFIG input must be connected to ground.The POWER CONTROL input can be used as a remote power on/off control. In most installations,POWER CONTROL is connected to ground, which causes the unit to automatically power on when poweris applied.Table 5-4 Power Configuration and Control InputsTable 5-5 Power Configuration and Power Control FunctionsPin Name Connector Pin I/OAIRCRAFT POWER 1 P3251 21 IAIRCRAFT POWER 1 P3251 42 IAIRCRAFT POWER 2 P3251 61 IAIRCRAFT POWER 2 P3251 62 IAIRCRAFT GROUND P3251 20 --AIRCRAFT GROUND P3251 41 --Pin Name Connector Pin I/OPOWER CONFIG P3251 59 IPOWER CONTROL P3251 38 IPOWERCONFIGPOWERCONTROL DescriptionGround Open Power offGround Ground Power on
