User Manual

TABLE OF CONTENTS
~\Technical Documentation\System Manuals\FCC-Reports\DT450-FCCRpt.doc Page 2
SECTION 1: THEORY OF OPERATION ................................................................................. 3
General Block Diagram................................................................................................ 3
General Block Diagram Definitions
..................................................................... 3
DT450 Mobile Data Radio Board Circuitry
......................................................... 5
Microcontroller....................................................................................... 5
Support Circuitry
......................................................................... 5
Input/Output .......................................................................................... 5
Injection Synthesizer ............................................................................. 6
Transmitter ............................................................................................ 6
Receiver 1 Front-End ............................................................................ 6
Receiver 1 IF......................................................................................... 7
Transmit Processing ............................................................................. 7
Baseband Routing................................................................................. 8
Power and Ground ................................................................................ 8
Receiver 2 Front-End ............................................................................ 8
Receiver 2 IF......................................................................................... 9
Modem .................................................................................................. 9
SECTION 2: FACTORY TEST PROCEDURE ....................................................................... 10
Equipment List ........................................................................................................... 10
Programming and Configuring Mobile Data Radio ................................................. 11
Adjustment / Alignment Procedures ........................................................................ 12
Receiver Injection
............................................................................................. 12
Receiver 1
........................................................................................................ 12
Receiver 2
........................................................................................................ 13
Transmitter
....................................................................................................... 14
Power Setting
................................................................................................... 16
SECTION 3: LABEL AND LABEL PLACEMENT ................................................................ 17
DT450 Mobile Data Radio FCC Label Placement..................................................... 17
DT450 Mobile Data Radio FCC Label........................................................................ 17
APPENDIX A: DT450 MOBILE DATA RADIO CIRCUIT BOARD DIAGRAM....................... 18