User's Manual

VIB-E-US-389B-1.2; 19/09/2008 8 of 10
3.3.3 CAN RF Coverage
Issue Examination / Action
Antenna,
Height & Tilt
Ensure that the CAN antenna cables are damage free and that all three
cables are correctly and securely connected. All damaged or faulty
components should be replaced.
Check the sequence of the RF cable assembly connections, the RED,
GREEN, BLUE (black) sequence must be observed as per below.
The CAN panel antenna has an azimuth beamwidth (radiation pattern or
signal path) of 120° and an elevation beamwidth of 16°. These radiation
patterns must be observed in order to assess RAU-CAN coverage.
The CAN sectorised antenna can be mechanically adjusted up to 15° of
uptilt or downtilt per sector. This allows the flexibility to adjust the antenna
radiation pattern to the surrounding terrain thereby maximising the pattern
performance for optimal RAU coverage.
On flat terrain a 0°, 1° or 2° of downtilt will be best. On slopes, gorges and
hilly areas the mechanical tilt must be adjusted to alter the elevation beam
width in order to maximise RAU coverage.
The height of the CAN antenna should be at least 5m, higher if possible,
unless forest canopy would restrict RF propagation.
3.3.4 Network Connection
• Power up the CAN using the battery cable assembly pigtail (p/n: VIB-400-0005). There are LEDs on
the outside of the CAN to show power up status and connectivity/activity on all the external port
connectors.
• Check the CAN has powered up by viewing the LEDs next to battery port# 1.
CANII with battery connected
• The main CAN power LED should be lit and indicate red.
16°
15° mechanical uptilt
15° mechanical downtilt
16°
16°
AP0
AP1
AP2
120°