GIA 63 Installation Manual Page 4-23190-00303-05 Revision T4.8 RMI/OBI4.8.1 RMI/OBI FunctionThe VOR OBI output provides bearing information from the active waypoint based upon the VORreceiver.When a localizer channel is tuned on the VLOC window, there is a bit in the data stream set to indicatethat a localizer frequency is tuned which stows the needle or drives it to the 3 o’clock position.4.8.2 RMI/OBI Electrical CharacteristicsPin Name Connector Pin I/OVOR OBI CLOCK P602 25 OutVOR OBI SYNC P602 26 OutVOR OBI DATA P602 27 OutINACTIVE: Floating (can be pulled up to externally sourced Vout in the range 0 ≤ Vout ≤ 33VDC)Leakage current in the INACTIVE state is typically ≤ 10 uA to groundACTIVE: Vout ≤ 0.5VDC with ≤ 20 mA sink currentSink current must be externally limited to 20 mA maxDRAFT Rev T 11/12/2010
