Adtran TRACERL9 Manual Do Utilizador

TRACER 2xT1 User’s Manual

61280003L2-1B

5

Preliminary

Two DS1/DSX-1 interfaces, labelled “T1A” and “T1B,” are provided for connecting to the T1
equipment.  Two types of physical interfaces are provided -- RJ-48C and bantam jacks.

The interfaces are illustrated in Figure 1-5, BBP Block Diagram.  The functions of the BBP are
partitioned into three printed circuit boards or PCBs, all contained in the same enclosure.

The DS1/DSX-1 interfaces provided for each channel are the same.  The upper bantam connectors,
labeled “Monitor,” provide isolated monitor points for testing.  The lower bantam jacks provide signal
insertion points.  The insertion of a bantam jack disconnects the RJ-48C connector from the circuit.  The
DS1/DSX-1 interface can operate on line lengths up to 6000 feet.

When connecting either T1 interface to the public switched network, an ADTRAN-provided cross-over
cable (part number 3125M011@A) is required to meet FCC part 68 and IC CS03 requirements.  This
cable is included with the BBP and is labelled “T1 Crossover.” This cable is required to cross-over the
TX and RX pairs to meet the connecting arrangement of a network interface device.

For connections to other CPE-type equipment, such as an ADTRAN TSU-100, a straight-through T1
cable is provided by ADTRAN (part number 3127004) and is included with the BBP.

Σ

T1

T1

T1C

Multiplex

Viterbi

Encoder/

Decoder

Spread

Spectrum

Data

Pump

90

90

Baseband Processor Board

IF  Interface  Board

Fc = 70 MHz

Fc = 140 MHz

Filter

µC

UART

DSP

-48Vdc

RS-232

T1A

T1B

I F

MANAGEMENT