Comtech EF Data SDM-2020 - Manual (Page 7)

s:\tpubs\manuals\released_word\modems\sdm2020d_rev4\text\errata c.doc 1
Errata C
Comtech EF Data Documentation Update
Subject: Revised Paragraph to Include 1.544 and 2.048 Mbps
Date: July 19, 2006
Document: SDM-2020 Satellite Demodulator Installation and Operation
Manual, Rev. 4, dated April 18, 2003
Part Number: MN/SDM2020D.EC4
Collating Instructions: Attach this page to page 11-1
Comments:
The following changes provide include 1.544 and 2.048 Mbps.
Change Specifics:
The G.703 interface provides connection to the standard plesiochronous digital hierarchy (PDH). With this
interface the modulator or demodulator operates at a fixed rate of 1.544, 2.048, 6.312, 8.448, 32.064,
34.368, 44.736, or 51.840 Mbps. An auxiliary connector provides open collector fault lines for reporting a
failure to external equipment like a redundancy switch. The G.703 signals connect to the module’s BNC
female connectors, and the signals supported are SD, RD and EXT (external) Clock.