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SECTION 4 TECHNICAL DESCRIPTION
SECTION 4 TECHNICAL DESCRIPTION
SECTION 4 TECHNICAL DESCRIPTION
SECTION 4 TECHNICAL DESCRIPTION
SECTION 4 TECHNICAL DESCRIPTION
4.1 Base Station Transceiver ......................................................... 4-1
4.1.1
Power Supply Section ................................................. 4-1
4.1.2
Receiver Section ......................................................... 4-1
4.1.2.1
Antenna Switching ............................................. 4-1
4.1.2.2
Pre-Amp, Splitter (binary distribution) ................ 4-1
4.1.2.3
All Channels Receiver ......................................... 4-1
4.1.2.4
Channel 70 Receiver ............................................ 4-2
1) High Frequency Amplifier ............................... 4-2
2) 1st IF ............................................................... 4-3
3) 2nd IF .............................................................. 4-3
4) De-emphasis .................................................... 4-3
5) Squelch ........................................................... 4-3
4.1.2.5
WX Alert (Weather Channel) .............................. 4-4
4.1.2.6
ATIS Decode (All Channel Receiver) .................. 4-4
4.1.2.7
DSC Decoding (Channel 70 Receiver) ................. 4-4
4.1.3
Transmitter Section ..................................................... 4-4
4.1.3.1
IDC Circuit ........................................................... 4-4
4.1.3.2
Buffer Driver Amplifier ........................................ 4-4
4.1.3.3
APC Circuit ......................................................... 4-4
4.1.3.4
ATIS, DSC, Encoding .......................................... 4-5
4.1.4
PLL Circuit .................................................................. 4-5
4.1.5
AF Control Section ..................................................... 4-5
4.1.5.1
AF Selection ........................................................ 4-5
4.1.5.2
Line Selection ...................................................... 4-5
4.1.5.3
Speaker Selection ................................................ 4-5
4.1.5.4
Telephone, I/O, Cross-point switch .................... 4-6
4.1.6
Handset I/O ................................................................. 4-7
4.1.6.1
Audio I/O ............................................................ 4-6
4.1.6.2
Digital I/O ............................................................ 4-6
4.1.7
NMEA I/O ................................................................... 4-6
4.1.8
SeaTalk I/O .................................................................. 4-6
4.1.10 Write Data Operation .................................................. 4-6
4.2 Handset Circuit ........................................................................ 4-7
4.2.1
Outline ........................................................................ 4-7
4.2.2
Circuit constitution ..................................................... 4-7
4.2.3
Power Supply System ................................................. 4-7
4.2.4
CPU ............................................................................. 4-7
4.2.5
LCD Driver .................................................................. 4-7
4.2.6
LED Driver Circuit ....................................................... 4-7
4.2.7
Electronically Controlled Volume ................................. 4-8
Содержание RAY230E
Страница 1: ...RAY230 RAY230E Fixed Mount VHF Radio Owner s Handbook Document number R49006_1 Date May 2001...
Страница 2: ......
Страница 7: ...vii Declaration of Conformity goes here...
Страница 102: ...3 80 Operations...
Страница 135: ...6 13 Parts List and Drawings 6 3 6 3 6 3 6 3 6 3 BLOCK DIAGRAM BLOCK DIAGRAM BLOCK DIAGRAM BLOCK DIAGRAM BLOCK DIAGRAM...
Страница 138: ...6 16 Parts List and Drawings...
Страница 150: ...7 12 Appendix...