82046-PG-B1
ST3400H PILOT’S GUIDE
Page 9-2
display of traffic all the time may cause the screen to become too
cluttered.
Note
: The traffic alert and its audio are provided by the TAS or TCAS
system, not the ST3400H.
9.3
Traffic Processor Altitude Mode
The traffic processor’s altitude display mode will be displayed above the
TFC Display Mode indicator.
NRM
Normal altitude display mode. Target aircraft within
+/-2,700 ft. of your aircraft are displayed.
ABV
Above altitude display mode. Target aircraft within –
2,700 ft. and +9,000 ft. of your aircraft are displayed.
BLW
Below altitude display mode. Target aircraft within –
9,000 ft. and + 2,700 ft. of your aircraft are displayed.
XTD
Extended altitude display mode. Target aircraft within
+/-9,000 ft. of your aircraft are displayed.
Note
: With some TCAS equipment NORM is not annunciated.
Please refer to the RFMS for details on the specific traffic system
installation in your aircraft.
9.4
TFC Range Ring
When traffic is being displayed a dotted 2nm range is shown. The 12, 3, 6,
and 9 o’clock positions are bolded.
