ADTRAN 2 x E1 Connecting the BBP and the RFC, Applying Power, Automatic BBP Frequency Plan

61280004L2-1C

Section 2 Installation

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.

CAUTION

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).

C A U T I O N

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.

WARNING

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 21