1
1 SDA-122i Digital Video Distribution Amplifier
1.1 Introduction
The SDA-122i is a high-quality 10-bit serial reclocked digital video distribution amplifier supporting
525 and 625-line formats for 4:2:2 or 4fsc signals. The module offers ASI support for DVB
applications and provides automatic equalization for up to 275 meters of cable and full
regeneration of the signal. It also supports all serial digital video signals from 143 to 540 Mbps.
The SDA-1221i is a member of the
imaging
family of digital video cards and therefore requires the
imaging
Quartet,
imaging
Quartet-C,
imaging
Quartet-M,
imaging
Quartet-M-A-75 (bottom row
only),
imaging
Quartet-M-A-110 (bottom row only), Symphonie, or
imaging
Solo tray for mounting
and power. The Symphonie-R-C or Symphonie-R-M rear module is required for Symphonie
installations.
Figure 1.1
SDA-122i Functional Block Diagram
1.2 Features
•
Serial 4fsc or 4:2:2 input
•
7 reclocked serial outputs
•
Supports 525/625-line formats
•
DVB-ASI
compatible*
•
Bit rates up to 540 Mbps
•
275 m automatic cable equalization
•
Signal presence detection with remote monitoring
*Output 1 to 5 only
Microcontroller
REMOTE
CONTROL
Equalizer
Signal
Presence
Detector
Serial
Digital
Video
IN
1
2
3
4
5
6
7
Serial
Digital
Video
OUT
Reclocker
