User Manual

TRACER 4208 System Manual Section 4 Network Turnup Procedure
612804208L1-1A © 2003 ADTRAN, Inc. 37
4. CHANNEL SELECTION
The FCC has allocated 125 MHz of spectrum in the 5.8 GHz band where the TRACER 4208 operates.
Figure 1 illustrates the bandwidth division.
Figure 1. 5.8 GHz Bandwidth Division
To designate the utilization of the ISM bandwidth, there are two different channel plans, labeled A and B.
The letter of each channel plan setting is preset by the factory and refers to the physical configuration of
the diplexer filter inside the environmental housing. Each channel is then divided into three bandplans (1, 2
or 3). The bandplans must be the same for the local and remote TRACER 4208. For example, the
transmitter at one end of the link will transmit in bandplan 1 of channel A (the lower portion of the
spectrum) and receive in bandplan 1 of channel B (the upper portion). Consequently, the receiver at the
other end should receive in bandplan 1 of channel A (the lower portion) and transmit in bandplan 1 of
channel B (the upper portion).
The letter of the channel plan (A or B) must be different on both ends and the number of the bandplan (1, 2,
or 3) must be the same on both ends. The default bandplan configuration for the TRACER 4208 is
bandplan 1.
The channel plan (A or B) of the unit may be changed in the field, if necessary, by rewiring the internal
diplexer. Contact ADTRAN Technical Support for more information on this procedure.
ChannelA
57425725 5787 58505747 5753MHz MHz
Bandplan3Bandplan2Bandplan1
ChannelB
5815 5827 5833
Bandplan3Bandplan2Bandplan1