Table of Contents Manual 7-9487 - 3 05/05/11
Table of Contents
General Description ............................................................................................ 1
Tower Top Box .................................................................................................... 2
Base Control Unit ................................................................................................ 3
Base Control Unit Styles..................................................................................... 3
MCU .................................................................................................................... 3
Functional Block Diagram.................................................................................. 3
CMU .................................................................................................................... 9
Functional Block Diagram.................................................................................. 9
Unpacking .......................................................................................................... 10
Pre-Installation Checkout ................................................................................. 10
Mechanical Inspection ..................................................................................... 10
Initial Power-up Test ......................................................................................... 10
Bench Testing ................................................................................................... 11
Installation.......................................................................................................... 13
Test Transmission Line ..................................................................................... 13
Installing the System ........................................................................................ 14
Installing the Tower-Top Box ........................................................................... 14
In-building Lightning Arresters .......................................................................... 18
Installing the Base Control Unit ........................................................................ 18
Interference and IM Considerations .................................................................. 20
Feedline Data ..................................................................................................... 20
Optimizing the System ...................................................................................... 20
Attenuation Settings ......................................................................................... 21
Reserve Gain..................................................................................................... 21
Receiver Multicoupler Distribution (MCU Only) ................................................. 21
Setting the MCU Reserve Gain Attenuation ...................................................... 21
Setting the CMU Reserve Gain Attenuation ...................................................... 22
GTR8000 Attenuator Adjustment .................................................................... 23
Reserve Gain Adjustment Procedure ................................................................ 23
Setting Distribution Attenuation (MCU Only) ..................................................... 24
Adjustment Procedure ..................................................................................... 24
Spectrum Analysis ............................................................................................ 24
Procedure for Spectral Analysis ........................................................................ 25
Operational Tests (Sensitivity and Degradation) ........................................... 27
Front Panel Test Port ........................................................................................ 27
Tower Top Amplifier Inputs................................................................................ 27
Static System Sensitivity ................................................................................... 27
Measuring Static Sensitivity (Load Connected) ................................................. 27
Effective System Sensitivity............................................................................... 30
Measuring Effective Sensitivity (Antenna Connected)....................................... 30
Degradation ....................................................................................................... 30
Routine Operation ............................................................................................. 30
Amplifier Monitoring........................................................................................... 31
LCD Display....................................................................................................... 31
Current Draw ................................................................................................... 31
TTA Temperature ............................................................................................ 31
Software Version ............................................................................................. 31
Front Panel LED’s ............................................................................................. 32
Form-C Contacts ............................................................................................... 32