Numeric Measurement Modes
R&S
®
EVSG1000
88
User Manual 1178.6227.02 ─ 06
Figure 4-13: Marker beacon placement with respect to runway
Marker beacon receivers decode audio and provide signaling output to identify one of
three marker beacons installed near the runway. They transmit a narrow beam width at
75
MHz carrier frequency in a vertical direction. Each of them has a different distinct
modulation code to allow the receiver to identify which one it is flying over.
Both visual (color of the marker beacon) and audio tone identification is supported for
determining which marker has been flown over. The audio/visual pairing of marker bea-
cons is as follows:
●
Outer marker flashes BLUE in the cockpit at 400
Hz (“relaxed” tone).
●
Middle marker flashes AMBER in the cockpit at 1300
Hz (“hurried” tone).
●
Inner marker flashes WHITE in the cockpit at 3000
Hz (“urgent” tone).
4.2.2
ILS Marker Beacon Measurements and Results
The ILS Marker Beacon measurement provides multiple views for the measurement
results.
ILS Marker Beacon Mode (Option R&S
EVSG-K3)