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TRACER 4108/4208 System Manual Section 4 Network Turnup Procedure

4. CHANNEL SELECTION

The FCC has allocated 83.5 MHz of spectrum in the 2.4 GHz band where the TRACER 4108 operates, and

125 MHz of spectrum in the 5.8 GHz band where the TRACER 4208 operates. Figure 1 and Figure 2

illustrate the bandwidth division.

Figure 1. 2.4 GHz Bandwidth Division (TRACER 4108)

Figure 2. 5.8 GHz Bandwidth Division (TRACER 4208)

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 chassis. Each channel is then divided into three bandplans (1, 2 or 3). The

bandplans must be the same for the local and remote TRACER 4108/4208. 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 4108/4208 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

2416 2441.752422 24282400 MHz 2483.5 MHz

Bandplan3

Bandplan2

Bandplan1

ChannelB

2456 2462 2468

Bandplan3

Bandplan2

Bandplan1

ChannelA

57425725 5787 58505747 5753MHz MHz

Bandplan3Bandplan2Bandplan1

ChannelB

5822 5827 5833

Bandplan3Bandplan2Bandplan1

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 59 60

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ADTRAN 12804108L1B Bedienerhandbuch Seite 37