evertz 8084 Instruction Manual page 101

5 TECHNICAL DESCRIPTION....................................................................................................... 5-1
5.1 OVERVIEW.................................................................................................................................. 5-1
5.1.1 Block Diagrams ................................................................................................................ 5-1
5.2 SPECIFICATIONS....................................................................................................................... 5-3
5.2.1 Serial Digital Video Input.................................................................................................. 5-3
5.2.2 Serial Digital Video Outputs ............................................................................................. 5-3
5.2.3 Composite Analog Video Input (8084AD only)................................................................. 5-3
5.2.4 Composite Analog Video Outputs (8084AD only) ............................................................ 5-3
5.2.5 Electrical........................................................................................................................... 5-4
5.3 SERVICING INSTRUCTIONS ..................................................................................................... 5-4
5.3.1 Changing The Fuses........................................................................................................ 5-4
5.3.2 REPLACING THE BATTERY........................................................................................... 5-5
5.3.2.1 Safety Guidelines and Precautions concerning the Use of 3V Lithium Batteries . 5-5
5.3.2.2 Procedure for Replacing the Battery .................................................................... 5-6
5.3.3 Changing DIP Switch Settings ......................................................................................... 5-6
5.3.4 Configuring Serial Port A.................................................................................................. 5-6
5.3.5 Configuring Serial Ports B and C ..................................................................................... 5-8
5.4 CIRCUIT DESCRIPTION............................................................................................................. 5-9
5.4.1 Front Panel Display and Pushbuttons.............................................................................. 5-9
5.4.2 Modems ......................................................................................................................... 5-10
5.4.3 Analog Composite Monitor 9000CME............................................................................ 5-10
5.5 UPGRADING THE FIRMWARE ................................................................................................ 5-11
5.5.1 Overview ........................................................................................................................ 5-11
5.5.2 Procedure for Firmware Upgrades................................................................................. 5-11
5.5.3 Viewing Firmware and PLD Revision Levels ................................................................. 5-13
Figures
Figure 5-1: 8084AD Top Level Block Diagram ............................................................................ 5-1
Figure 5-2: Caption Processing Engine (Stream Mode) .............................................................. 5-2
Figure 5-3: Jumper Settings for Port A Configurations ................................................................ 5-7
Figure 5-4: Port B or Port C Ribbon Cable Positions................................................................... 5-8
Figure 5-5: Jumper Settings for Ports B and C ............................................................................ 5-9
Tables
Table 5-1: DIP Switch Functions.................................................................................................. 5-6
Table 5-2: Keyboard Scan Codes................................................................................................ 5-9
Models 8084/8084AD/8085 Closed Caption Encoder Manual
CHAPTER 5: TECHNICAL DESCRIPTION
Revision 1.6.6