296mm Profile Panel Antennas
Bulletin D701-0013
• Revision C • November
2014 page 4 of 5
Operation of Antennas
FET Antennas
The beam downtilt is factory set.
MET Antennas
The beam downtilt below the horizon is adjusted by rotating the hex socket
located at the bottom of the antenna - Figure 5). Turning the hex socket in
a clockwise direction increases the beam downtilt below the horizon.
Turning the hex socket in an anti-clockwise direction decreases the beam
downtilt below the horizon. Beam downtilt setting in degrees below
boresight can be read off the scale at the base of the antenna. The downtilt
setting is read from the face of the antenna bottom end cap at the point
where the scale protrudes.
AISG Compliant
RET Antennas
AISG Compliant antennas are compatible with AISG compliant control
unit equipment. For operation of downtilt using AISG compliant controllers
see the controller documentation. Where manual override of RET control is
provided at the antenna bottom end cap, operation is identical to that
described above for MET antennas.
WARNING:
During downtilt adjustment ensure the hex socket is not
turned past the minimum and maximum positions as shown on the downtilt
indicator scale. Forcing the hex adjustment beyond this point may lead to
damage of the downtilt mechanism.
Using power drills and electric
screwdrivers to adjust downtilt may also lead to damage of the
downtilt mechanism.
Port and Band
Identification
Each RF and/or AISG port on the antenna is numbered and identified in
accordance with AISG Standard “AIS
G Antenna Port Color Coding
”.
Each pair of ±45° polarized RF ports on the antenna (an array) is
commonly termed a “Band”. Using this terminology,
the band ID numbers
rise in step with the port numbers, ie Band 1 corresponds with Ports 1 & 2,
Band 2 corresponds with Ports 3 & 4 etc.
Ports are numbered starting with RF low frequency band(s) first, followed
by higher frequency band(s). For bands operating at the same RF frequency,
ports associated with arrays at the bottom of the antenna are numbered
before ports associated with arrays at the top.
For remote tilt antennas, depending on the configuration of AISG employed
(Single RET or Multi RET), the antenna will report the bands differently to
the primary controller as follows:
SRET: For either AISG1.1 or 2.0, a multiband antenna configured as
cascaded SRET will report to the primary controller as multiple antennas,
each with a single band. Each band of the antenna will report a different
serial number. For example, a tri band antenna with serial number
60051007 will report to the controller three individual antennas with serial
numbers 600510071, 600510072, 600510073, where the last digit
represents the band of the antenna.
MRET: When using AISG2.0, a multiband antenna will report to the
primary controller as a single antenna with multiple bands. Each band of
the antenna is accessible through the controller.
