Bbp - ADTRAN TRACER User Manual

P 24
AGE
S 2
ECTION
S T
ETTING THE RANSMITTER
The FCC specifies the maximum transmitter power that may be
used for antennae of a given gain. FCC rules Part 15, Subpart 247
allow for a maximum power of 1 watt into antennae of a gain less
than or equal to 6 dBi. For every 3 dB of gain over 6 dBi, the
transmitter must be reduced by 1 dB. The following table lists the
maximum transmitter power for given antennae gains.
The transmitter power is set by way of a potentiometer on the
front panel of the BBP or via the configuration page of the interface
VT-100. The RFC must be attached by way of the IF cable during
this operation. Attach an RF power meter to the N-type antenna
connector on the RFC, and adjust the power by way of the
potentiometer or VT-100 until the desired transmitter power is
obtained. For convenience, the transmitter power adjustment
should be made before the RFC is installed on the mast.
S RFC F
ETTING THE
The frequency plan designates on which frequencies the Tracer
transmits and receives. Plan A corresponds to a transmitting (Tx)
frequency of 2422 MHz and a receive (Rx) frequency of 2462 MHz.
Plan B corresponds to a Tx frequency of 2462 MHz and a Rx
frequency of 2422 MHz. Shipment of a link consists of one RFC
set to Plan A and the other set to Plan B unless specified otherwise.
The RFC plan can, however, be changed in the field if required.
This procedure involves two steps:
• Configuring the RFC interconnect
• Informing the BBP of the correct Plan
P
OWER
Antenna
Gain
6 dBi ......... 30 dBm
12 dBi ....... 28 dBm
18 dBi ....... 26 dBm
24 dBi ....... 24 dBm
30 dBi ....... 22 dBm
36 dBi ....... 20 dBm (Tracer' s maximum power
P
REQUENCY LAN
61280.003L1-1B
Power
output)
4/12/99