Grass Valley 2042EDA - Manual (Page 19)

2042EDA Instruction Manual 13
Functional Description
Functional Description
A block diagram of the 2042EDA is shown in Figure 11 .
Figure 11. 2042EDA Block Diagram
Input Processing
The two wideband channels for serial SD or HD signals enter the module
from rear BNCs J10 (In 1) and J5 (In 2) on the passive rear module to input
amplifiers. The signals are then equalized for specified cable lengths in the
equalizer circuit.
Microprocessor
The main functions of the microprocessor include:
■ Providing remote control and monitoring capability for the module
(through ethernet),
■ Communicating with equalizer ICs to monitor signal present status,
and
■ Relaying module status through on-board LEDs.
Serial
SD or
HD in
Serial
SD or
HD in
SIG 1/2 PRES
rear LED
Ch 1
Serial
SD or
HD Out
8066_06
Equalizer
Microprocessor
Signal 1 present
Signal 2 present
Signal 1/2 present
Remote
Control
Input
Amplifier
Equalizer
Input
Amplifier
Output
Drivers
Ch 2
Serial
SD or
HD Out
Output
Drivers
In 1
In 2
Passive
Rear
Module
Connectors
SIG 2 PRES LED
SIG 1 PRES LED
FAULT LED
COMM LED
CONF LED
PWR LED