Adtran TRC3202 Benutzerhandbuch
Section 2, Microwave Path Engineering Basics
TRACER 2210/3202 System Manual
20
© 2002 ADTRAN, Inc.
61280012L1-1A
Using the 2210 keypad, look at the menu option
STATUS
⇒
RADIO STATUS
⇒
RSSI
to examine the RSSI value of the local TRACER 2210/3202 system.
If the remote system has acquired a useful signal from the remote system, then the remote TRACER
2210/3202 RSSI can also be viewed from the local 2210 unit menu, via the keypad menu sequence:
2210/3202 RSSI can also be viewed from the local 2210 unit menu, via the keypad menu sequence:
STATUS
⇒
FAR RADIO STATUS
⇒
RSSI
Antenna Beam Patterns
Directly related to the subject of antenna alignment is the topic of antenna beam patterns. Antennas being
used with the TRACER 2210/3202 system will have a particular beam shape determined in part by the
physical construction and geometry of the antenna. The antenna beam patterns are characterized by a
dominant main lobe, which is the preferred lobe to use for point-to-point communications, and several side
lobes, as shown in Figure 2. The antenna alignment step to setting up a microwave link is in fact steering
the main lobes of both antennas until the main lobe of one transmitter is centered on the receiving element
of the receiving antenna.
used with the TRACER 2210/3202 system will have a particular beam shape determined in part by the
physical construction and geometry of the antenna. The antenna beam patterns are characterized by a
dominant main lobe, which is the preferred lobe to use for point-to-point communications, and several side
lobes, as shown in Figure 2. The antenna alignment step to setting up a microwave link is in fact steering
the main lobes of both antennas until the main lobe of one transmitter is centered on the receiving element
of the receiving antenna.
Figure 2. Typical Antenna Beam Pattern
Antennas are also designed to radiate RF energy efficiently for a specific range of frequencies. Please
consult the data sheet for your particular antenna make and model to ensure that it is specified to operate in
the 5725 MHz to 5850 MHz frequency band.
consult the data sheet for your particular antenna make and model to ensure that it is specified to operate in
the 5725 MHz to 5850 MHz frequency band.
RSSI
[*********
[*********
____
]
FAR RSSI
[*********
[*********
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]
main lobe
side lobes