Specifications

MDS 05-3438A01, Rev. E MDS 4790/9790 Series™ I/O Guide i
TABLE OF CONTENTS
1.0 INTRODUCTION.....................................................................................1
2.0 PRODUCT DESCRIPTION.....................................................................1
2.1 Network-Wide Diagnostics ...............................................................2
2.2 Redundant versus Non-redundant Operation ..................................2
2.3 Applications ......................................................................................3
Basic MAS Master Station Operation ...............................................3
Repeater and Polling Remote Operation ..........................................3
2.4 Features ...........................................................................................4
2.5 Accessories ......................................................................................5
2.6 Model Number Codes ......................................................................6
3.0 INSTALLATION PLANNING ....................................................................6
3.1 General Requirements .....................................................................6
Site Selection....................................................................................7
A Word About Interference................................................................8
3.2 Antenna and Feedline Selection ......................................................8
Antenna System................................................................................8
Feedline Selection ............................................................................9
4.0 INSTALLATION PROCEDURES ...........................................................10
4.1 Unpacking and Inspection ..............................................................10
4.2 Mounting the Radio ........................................................................11
Rack Mounting................................................................................11
Tabletop Mounting...........................................................................11
Remote Front Panel Mounting—Optional Configuration.................12
4.3 Primary Power ................................................................................13
AC-Powered Units...........................................................................14
DC-Powered Units ..........................................................................14
4.4 Backup Battery ...............................................................................15
Location of Battery Backup Switch .................................................15
Low-Voltage Disconnect Feature ....................................................16
Battery Reset Switch (SW1/LVD PCB) ...........................................16
4.5 Antenna Installation ........................................................................16
Feedline Installation........................................................................17
4.6 Interface Wiring Connections .........................................................17
TX, Antenna and RX Coaxial Connectors (Type-N)........................18
Ground Connection.........................................................................20
Diagnostics Connector—J1 ............................................................21
4-Wire Audio Connector—J2 ..........................................................21
Data Interface Connector—J3 ........................................................22