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Remote Electrical Downtilt System Handbook Section 1–Teletilt

Overview

Bulletin 639519 • Revision D May 2009 1-3

Figure 1-3. RET System Configuration Using a TMA and Bottom Smart Bias Tee.

Junction Box

Simpliﬁ es RET cabling and provides lightning protection.

Lightning Protection Unit

Acts as a surge arrestor to protect the controller.

Smart Bias Tee

Allows the controller to pass data and commands over the coax cable and eliminates the need for a

long RET cable up the tower.

AISG Tower Mounted Ampliﬁ er (TMA)

TMA with integrated smart bias tee allows the controller to pass data and commands over the coaxi-

al cable to a bottom smart bias tee to eliminate the need for a long RET cable up the tower.

Antenna

Actuator

ATM200-002

RET Cable Assembly

ATCB-B01-006

Female DIN

Male AISG

Male DIN

Smart Bias Tee, Bottom

Injects dc (RET) voltage

onto coax along with RF.

Power

BTS

Rack

Smart Bias Tee, Bottom

Injects dc (RET) voltage

onto coax along with RF.

Local Control Interface

Not Supplied

RS-232

Ethernet

(10 Base T)

AISG TMA

Works with bottom smart bias tee

to inject dc (RET) voltage onto

coax along with RF.

RET Cable Assembly

ATCB-B01-006

Coax Ground

(Outer Cond.)

Coax

Cable

RET Cable Assembly

ATCB-B01-001

Coax Surge Arrestor

APTDC-BDFDF-DB

Additional Products:

ATJB200-A01-004 Four-Way Junction Box

ATJB200-A01-007 Seven-Way Junction Box

Example cable lengths shown.

Coax cables for remaining DIN

connectors on antennas are not

shown.

Antenna Controller

ATC200-1000

ATC300-1000

ATC200-LITE

ATC200-LITE-USB

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