FlightHawk RF Test Set
A-10
a) If the system passes, put the airplane back to its usual
condition.
b) If the system fails, isolate by using the distance to
fault feature using steps below, Fault Isolation of Coaxial
Cable and Antenna System.
B. DISTANCE-TO-FAULT ISOLATION OF COAXIAL CABLE AND ANTENNA
SYSTEM
(1) Select Fault Location Mode.
(a) Push trace measurement field to display
Measurement Mode menu.
(b) Push to select DTF_RL from the following
Measurement Mode drop down menu.
NOTE: When making Distance to Fault measurement,
select DTF_RL units for the Y (vertical) scale.
(c) Set number of Data Points:
1) Push the Points data field and enter the
number of Data Points desired (default to 801).
(d) Set Start and Stop Frequencies for the applicable RF
system from Table 1.
(e) Set Start and Stop Distance:
1) Stop distance should be about 20% longer
than actual length. Actual length of the cable is
found in the applicable system’s WDM.
NOTE: If a maximum distance less than the total length
of the cable system is selected, the trace will not show
the end of the cable system (antenna). To display the full
cable system always set the maximum distance to a
