Comtech EF Data SDM-2020 - Manual (Page 154)

SDM-2020 Satellite Demodulator Revision 4
ECL/HSSI Data Interface MN/SDM2020D.IOM
10–2
10.1.1 Applicable Documents
Applicable specifications, as referenced herein, include:
ETS 300 421 Digital broadcasting systems for television, sound and data services
EN 80053-9 Interfaces for CATV / SMATV Headends and Similar Professional
Equipment, 10
th Working Draft
TIA/EIA-612 Electrical Characteristics for an Interface at Data Signaling Rates up to
52 Mbps (HSSI)
TIA/EIA-613 High Speed Serial Interface for Data Terminal Equipment and Data
Circuit-Terminating Equipment (HSSI)
Cisco HSSI spec HSSI High Speed Serial Interface Design Specification, rev. 3.0
ISO/IEC DIS 13818-1 Coding of moving pictures and associated audio.
10.1.2 Description
The ECL/HSSI data interface is an optional rear panel field-installed plug-in, and
provides the modulator and demodulator with a emitter coupled logic (ECL) serial data
electrical interface.
10.1.3 Specifications
Refer to Table 10-1.
Table 10-1. Specification Summary
Terrestrial (User) Data
Interface:
Type
Data Rate
Signals Supported
Electrical Connector
Synchronous serial
1.5 to 70 Mbps
RT, RD, ST, TT, SD, TA, CA, LA, LB,
LC, TM, TPSYNC, TDVALID, CD, DF,
MF, RPSYNC, RDVALID
Per EIA-612 (10KH ECL)
50-pin mini-D female per EIA-613 (HSSI)
Framing Format Compatibility
TM1449 (DVB)
DBS (1.5 to 32 Mbps only)
Transport frame is 188 or 204 MPEG-2
transport stream or none (No Framing).