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CONNECTING THE BBP AND THE RFC
The BBP and the RFC are connected by an IF cable, either supplied by ADTRAN (for rackmount
assembly) or by the customer (for mastmount assembly). This single connection provides everything the
RFC requires. The cable assembly attaches to the ports labeled "IF" on the BBP and the RFC.
When connecting an RF converter (RFC) to a Baseband Processor (BBP), verify that the connector
labeled "IF" on the rear panel of the Baseband Processor is connected via coax to the connector
labeled "IF" on the rear panel of the RF converter. Connecting the Baseband Processor to the
incorrect connector on the RF converter will cause the internal 1 amp 250 V fuse to blow in the
Baseband Processor. The fuse is accessed by removing the top of the Baseband Processor, and is
located on the left side of the chassis when facing the front panel.
APPLYING POWER
If the ADTRAN-supplied tabletop power source is used, simply plug it into the circular receptacle
located in the "DC Power" area on the rear of the BBP. If a source of 21 to 60 volts DC (30 watts),
either polarity referenced to ground is available, it may be attached to the terminal block located on the
rear of the BBP. Ground (or common) should be applied to the terminal with the ground symbol (Terminal 1)
and positive or negative voltage should be applied to the "+/-" terminal (Terminal 3). When a positive voltage
reference power supply is used (+24V for example), connect the ground (or "-") cable from the power supply
to the ground terminal (Terminal 1) and the "+" cable from the power supply to the "+/-" terminal (Terminal
3). When a negative reference power supply is used (-48V for example), connect the ground cable from the
power supply to the ground terminal (Terminal 1) and the "-" cable from the power supply to the "+/-"
terminal (Terminal 3).
Power sources must not be attached to both the circular connector and the terminal blocks at
the same time or damage will occur.
AUTOMATIC BBP FREQUENCY PLAN
Upon the initial application of power, the BBP will default to the factory-preset Frequency Plan, or to the
Frequency Plan determined by the cable configuration of the RFC. The LED will indicate which
frequency plan is active. On subsequent reboots, such as after a loss of power, the BBP will default to
the most recently-used Plan setting.
SPREADING CODE
The spreading code for each end must be the same. The choice of operating code is selectable by the
operator or the installer. TRACER is shipped in a matched (default) configuration.
Spreading code to be set through the VT100 interface from the other end of the link. If the new
spreading code is unknown, step the local end of the link through all other spreading codes until
the link is reestablished.
TRACER 2 x E1 User's Manual
CAUTION
C A U T I O N
WARNING
61280004L2-1C
Section 2 Installation
21
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