LDI Intellectual Property.
Not for secondary distribution or replication, in part or entirety.
DIGISONDE-4D
SYSTEM MANUAL
VERSION 1.2.11
SECTION 4 – HARDWARE DESCRIPTION 4-1
SECTION 4
HARDWARE DESCRIPTION
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SECTION CONTENTS
Page
SECTION 4 4-1
CHAPTER 1 _ HARDWARE OVERVIEW ................................................................................... 4-4
SYSTEM DESCRIPTION............................................................................................................................4-4
CHAPTER 2 _ PROPRIETARY CIRCUIT BOARDS ................................................................... 4-8
DIGITAL TRANSMITTER CARD ................................................................................................................4-8
Functional Description ........................................................................................................................... 4-8
Transmitter and Receiver Synchronization ......................................................................................... 4-10
Transmitter Control .............................................................................................................................. 4-10
Transmitter Output Modes ................................................................................................................... 4-11
Transmitter Card .................................................................................................................................. 4-11
DIGITAL RECEIVER ................................................................................................................................ 4-12
Gain Control Prior to Digitization ......................................................................................................... 4-12
Digital Receivers with TI Graychip ...................................................................................................... 4-13
Digital Receiver Board ......................................................................................................................... 4-14
TRACKING BANDPASS FILTERS .......................................................................................................... 4-15
PREPROCESSOR CARD ....................................................................................................................... 4-16
Functional Description ......................................................................................................................... 4-16
Data Interface to Control Platform ....................................................................................................... 4-17
Preprocessor Board............................................................................................................................. 4-17
BUILT-IN TEST CARD............................................................................................................................. 4-18
ANTENNA SWITCH ................................................................................................................................. 4-20
POLARIZATION SWITCH ....................................................................................................................... 4-22
POWER DISTRIBUTION CARD .............................................................................................................. 4-23
POWER INTERFACE BOX ..................................................................................................................... 4-24
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