Installation Manual

THALES COMMUNICATIONS
OIM
AHV1600-SYSTEM
Page 123
July 16/09
(2) AID DEFINITION
Installation Delay (AID) is the total electrical length from the transceiver transmitting output port to
the aircraft skin, via the transmitting antenna the add to the distance from the antenna to the
ground, add to the distance from ground to receive antenna and back to the transceiver receiving
output via the receiving antenna.
L
1
+ L
2
Electrical length (in feet) of the coaxial cables between the transceiver and transmitting and
receiving antennas respectively.
L
3
+ L
4
Distance (in feet) between transmitting and receiving antennas to the ground when the
aircraft is on the ground
ANT
1
and ANT
2
are the electrical length (in feet) of antennas (1.5 ft per antenna)
The formula for cable mechanical length calculation is:
Le +L
r