SECTION 4
SECTION 4
SECTION 4
TECHNICAL DESCRIPTION
SECTION 4
SECTION 4
TECHNICAL DESCRIPTION
TECHNICAL DESCRIPTION
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.2 Handset Circuit ........................................................................ 4-7
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.1.2.1
4.1.2.2
4.1.2.3
4.1.2.4
2) 1st IF ............................................................... 4-3
3) 2nd IF .............................................................. 4-3
4) De-emphasis .................................................... 4-3
5) Squelch ........................................................... 4-3
4.1.2.5
4.1.2.6
4.1.2.7
4.1.3.1
IDC Circuit ........................................................... 4-4
4.1.3.2
4.1.3.3
APC Circuit ......................................................... 4-4
4.1.3.4
PLL Circuit .................................................................. 4-5
4.1.5.1
AF Selection ........................................................ 4-5
4.1.5.2
Line Selection ...................................................... 4-5
4.1.5.3
4.1.5.4
Handset I/O ................................................................. 4-7
4.1.6.1
Audio I/O ............................................................ 4-6
4.1.6.2
Digital I/O ............................................................ 4-6
NMEA I/O ................................................................... 4-6
SeaTalk I/O .................................................................. 4-6
Outline ........................................................................ 4-7
Circuit constitution ..................................................... 4-7
CPU ............................................................................. 4-7
LCD Driver .................................................................. 4-7
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