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78 Preparation for Operation TB7100 Installation and Operation Manual

7.3 Line-controlled Base

In the line-controlled base mode the audio and control signals are routed

from the external 25-way D-range connector through the system interface

to the receiver and transmitter modules. External equipment is used to

control the operation of the base station.

7.3.1 Test Equipment Required

The following test equipment is used to setup the base station for line-

controlled base operation:

■ TBA0STU calibration test unit (CTU) which includes the CTU adaptor

and CTU cable, or

■ TBA0ST1 calibration test unit (CTU), TBB0STU-TBB CTU adaptor

(220-02068-xx) and CTU cable (219-02888-xx)

■ PC, programming cables and the TB7100 programming application

■ digital voltmeter

■ DC power supply (not necessary with internal AC power supply unit

option)

■ RF test set with:

■ RF power meter

■ modulation analyser

■ RF signal generator

■ sinad meter

■ audio distortion meter

Figure 7.1 Line-controlled base

System Interface

Receiver Transmitter

RF In RF Out

Rx Audio

Rx Gate

Tx Audio

Tx Key

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