User Manual

TABLE OF CONTENTS
~\Technical Documentation\System Manuals\FCC-Reports\IP1B-FCCRpt.doc Page 2
SECTION 1: THEORY OF OPERATION .................................................................................. 3
General Block Diagram ........................................................................................................... 3
General Block Diagram Definitions
................................................................................ 3
DR4B Base Station Data Radio Circuitry
....................................................................... 5
System Controller ................................................................................................ 5
Input/Output ......................................................................................................... 5
Modem Switching................................................................................................. 6
Modem ................................................................................................................. 6
Diversity Reception Controller ............................................................................. 6
Receive Signal Strength Indication Comparator .................................................. 7
Baseband............................................................................................................. 8
Receiver Board .................................................................................................... 8
IF Amplifier........................................................................................................... 9
Receiver Injection ................................................................................................ 9
Exciter ................................................................................................................ 10
Analog Modulation ............................................................................................. 10
Phase Locked Loop ........................................................................................... 11
Power Amplifier.................................................................................................. 11
SECTION 2: FACTORY TEST PROCEDURE ........................................................................ 12
Equipment List ........................................................................................................... 12
Programming and Configuring the Base Station Data Radio ................................ 13
Adjustment / Alignment Procedure .......................................................................... 14
Receiver Injection
............................................................................................. 14
Receiver 1
........................................................................................................ 14
Diversity Reception Controller
.......................................................................... 14
Receive Data
.................................................................................................... 15
Exciter
............................................................................................................ 16
Power Amplifier
................................................................................................ 16
SECTION 3: FCC LABEL ....................................................................................................... 17
DR4B Base Station Data Radio FCC Label Placement ........................................... 17
DR4B Base Station Data Radio FCC Label .............................................................. 17
APPENDIX A: DR4B BASE STATION DATA RADIO CIRCUIT BOARD DIAGRAM............ 18