User's Manual

Table Of Contents

TBA0STU/TBA0STP CTU Operation Manual Using the CTU with a TB7100 11

3 Using the CTU with a TB7100

The CTU provides a selection of input and output connectors that allow the

TB7100 base station to be connected to standard test equipment. These

inputs, outputs and associated controls are identified in Figure 3.1 on

page 12, and their functions are explained in the paragraphs which follow.

Some items are not used with the TB7100, and others serve one function

with the TB7100 and another with the TB8100 or TB9100. Any

differences in function are described in the table that accompanies

Figure 3.1. A block diagram of the CTU is provided in Figure B.1 on

page 40.

The CTU is designed to make it easier to tune or calibrate TB7100

modules. It also allows a user to monitor and control the inputs and outputs

available on the TB7100 system interface connector.

Note Digital/programming input switch 6 is used to control Rx Inhibit

in the TB7100. Setting this switch to active will prevent any audio

output from the base station. Be careful not to set this switch by

accident.

Figure 3.2 on page 16 shows a typical connection setup between the CTU

and a TB7100 base station. Refer to the TB7100 Calibration Application

online Help for details on tuning and calibrating TB7100 modules. Refer

also to the TB7100 Installation and Operation Manual for information on

using the CTU to set up the TB7100 for various modes of operation.