MDS 05-3438A01, Rev. F 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
Simplex and Switched Carrier Operation..........................................4
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 ......................................................9
Antenna System................................................................................9
Feedline Selection ............................................................................9
4.0 INSTALLATION PROCEDURES...........................................................10
4.1 Unpacking and Inspection .............................................................. 11
4.2 Mounting the Radio ........................................................................11
Rack Mounting................................................................................12
Tabletop Mounting...........................................................................12
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 ........................................................................17
Feedline Installation........................................................................17
4.6 Interface Wiring Connections .........................................................18
TX, Antenna, and RX Coaxial Connectors (Type-N).......................18
Ground Connection.........................................................................21
Diagnostics Connector—J1 ............................................................21
4-Wire Audio Connector—J2 ..........................................................22
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