Garmin HTAWS User Guide - Page 11
Control and Display
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Part One: Section 2 TIS Controls and Display Section 2: Control and Display TIS Traffic Display Status and Pilot Response • STBY - When the 400W/500W displays STBY in the upper right hand corner of the display the TIS system is in standby mode and cannot display traffic data. display due to the age of the data being too old to "coast" (for the time period after 12 seconds from the last receipt of a TIS message). The pilot should be aware that traffic may be present but not shown. • OPER - When the 400W/500W displays OPER in the upper right hand corner of the display the TIS system is in operational mode and available to display traffic on the Traffic or Map Page. • AGE - If traffic data are not refreshed within 6 seconds, an age indicator (e.g., "AGE 00:06") is displayed in the lower right corner of the display (when displaying traffic). The pilot should be aware that the quality of displayed traffic is reduced in this condition. • TRFC CST - If data are still not received between six and twelve seconds, the "TRFC CST" (traffic coasting) banner located above the AGE timer will indicate that displayed traffic is held even though the data are not current. The pilot should be aware that the quality of displayed traffic is reduced in this condition. Traffic Page displaying "TRFC RMVD" banner. • UNAVAIL - After a 60 second period elapses with no data, TIS is considered to be unavailable. This state is indicated by the text "UNAVAIL". The pilot should be aware that "UNAVAIL" could indicate a TIS coverage limitation due to a lineof-sight situation, a low altitude condition, no TIS service, or a result of flying directly over the radar site providing coverage (cone of silence). • NO DATA - "NO DATA" is displayed when no data are being received from the GTX 330. The pilot should be aware that this status may be a normal mode of operation in a dual transponder installation where the GTX 330 with TIS is not the selected transponder. The GTX 330 may not be powered on. Traffic Age Indication showing "traffic coasting". • TRFC RMVD - If data are still not received after twelve seconds, the "TRFC RMVD" banner will indicate that traffic has been removed from the • DATA FAIL - "DATA FAIL" is displayed when data are being received from GTX 330, but there was a failure detected in the data stream. The pilot should see the dealer for corrective action. • FAILED - "FAILED" is displayed when the GTX 330 has indicated it has failed. The pilot should see the dealer for corrective action. 190-00356-30 Rev H 5