Orban OPTIMOD 8685 - Page 13

CIRCUIT DESCRIPTION........................................................................................................6-6
Overview ..................................................................................................................6-7
Control Circuits ........................................................................................................6-7
User Control Interface and LCD Display Circuits ...................................................6-8
Input Circuits............................................................................................................6-9
Output Circuits.......................................................................................................6-10
DSP Circuit..............................................................................................................6-11
Power Supply .........................................................................................................6-12
HD-SDI Module (optional) ....................................................................................6-13
ABBREVIATIONS .............................................................................................................6-13
PARTS LIST.....................................................................................................................6-15
Obtaining Spare Parts ...........................................................................................6-15
Base Board .............................................................................................................6-16
CPU Module ...........................................................................................................6-17
Serial I/O Board ......................................................................................................6-19
Base Input/Output (I/O) Board (for units without SDI) .......................................6-20
DSP Board...............................................................................................................6-22
Interface Board ......................................................................................................6-24
Headphone Board .................................................................................................6-24
Encoder Board .......................................................................................................6-25
LCD Carrier Board ..................................................................................................6-25
Power Supply Distribution Board.........................................................................6-26
Optional HD-SDI I/O Board ...................................................................................6-27
Optional Serial RS-232 / RS-485 Board for HD-SDI Option .................................6-33
SCHEMATICS AND PARTS LOCATOR DRAWINGS ...................................................................6-34
Function Description Drawing Page
Chassis
Circuit Board Locator and basic
interconnections
Top view
(not to scale)
6-37
Base Board
Glue logic; supports CPU module
and RS-232 daughterboard.
Contains:
Parts Locator
Drawing
6-38
System Connections Schematic 1 of 4
6-39
CPU module interface Schematic 2 of 4
6-40
Power Supply Monitor Schematic 3 of 4
6-41
CPLD, General Purpose Interface,
and Remotes
Schematic 4 of 4
6-42
CPU Module
Control microprocessor. Services
front panel, serial port, Ethernet,
DSP board, and control board. Re-
sides on base board.
Contains:
Parts Locator
Drawing
6-43
Ethernet Schematic 1 of 5
6-44
General Purpose Bus Schematic 2 of 5
6-45
Memory Schematic 3 of 5
6-46
Miscellaneous Functions Schematic 4 of 5
6-47
Power and Ground Distribution Schematic 5 of 5
6-48
RS-232 Board
(base model)
Supports Serial Port Parts Locator
Drawing
6-49
Schematic 1 of 1
6-50