User Guide

CCS Technical Documentation System Module & User Interface
NHM-4
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Abbreviations ...............................................................................................................6
Transceiver NHM-4 ....................................................................................................... 9
Introduction ..................................................................................................................9
Electrical Modules..................................................................................................... 9
Operation Modes....................................................................................................... 9
Interconnection Diagram ...........................................................................................10
System Module LA4 .................................................................................................... 11
Baseband Module ......................................................................................................11
Block Diagram ........................................................................................................ 11
Technical Summary................................................................................................. 12
DC Characteristics................................................................................................... 13
External and Internal Signals and Connections....................................................... 14
Internal Signals and Connections............................................................................ 14
External Signals and Connections .............................................................................21
UI (board-to-board) connector ................................................................................ 21
Functional Description ...............................................................................................25
Modes of Operation................................................................................................. 25
Supply Voltage Regulation ..................................................................................... 26
Battery..................................................................................................................... 27
Power Up and Reset ................................................................................................ 27
A/D Channels .......................................................................................................... 28
Bluetooth (LPRF).................................................................................................... 29
IR Module ............................................................................................................... 29
Backup Battery........................................................................................................ 30
SIM Interface........................................................................................................... 30
Buzzer...................................................................................................................... 31
Internal Microphone................................................................................................ 31
UPP.......................................................................................................................... 31
Memory Block......................................................................................................... 32
RF Module .................................................................................................................33
RF Frequency Plan.................................................................................................. 33
DC characteristics ................................................................................................... 34
Power Distribution Diagram ................................................................................... 35
RF characteristics .................................................................................................... 36
RF Block Diagram .................................................................................................. 37
Frequency synthesizers ........................................................................................... 38
Receiver................................................................................................................... 39
Transmitter .............................................................................................................. 40
AFC function........................................................................................................... 40
DC-compensation.................................................................................................... 41
UI Board LK4 ............................................................................................................41
LCD & Keypad Illumination................................................................................... 41
Internal Speaker....................................................................................................... 42