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Mocomtech CDM-570L Manuel D’Utilisation

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Filename: T_ERRATA
 1 
Errata E 
Comtech EF Data Documentation Update 
 
 
Subject: 
Changed Figure 7-5, TPC Curve for Rate 7/8  
 
 
Date: 
July 27, 2006 
Document: 
CDM-570/570L Satellite Modem with Optional IP Module, 
Installation and Operation Manual, Rev. 4, dated April 12, 2006 
Part Number: 
MN/CDM-570L.EE4 
Collating Instructions: 
Attach this page to page 7-14 
 
 
Comments: 
Chnaged slope of curves for TPC 7/8 for Figure 7-5. The following table highlights the changes 
to the BER curve. 
 
Change Specifics: 
 
TURBO PRODUCT 
CODEC  
Rate 7/8 QPSK 
Rate 7/8 8-PSK 
Rate 7/8 16-QAM 
BER 
(With two adjacent 
carriers, each 7 dB 
higher than the 
desired carrier) 
 
 
 
For: 
 
BER=10
-5
 
 
 
 
BER=10
-8
 
Rate 7/8 (Q, OQ) 
Guaranteed Eb/No: 
(typical value in 
parentheses) 
 
4.3 dB (4.0 dB) 
 
 
 
4.5 dB (4.2 dB) 
Rate 7/8 (8-PSK) 
Guaranteed Eb/No: 
(typical value in  
parentheses) 
 
7.0 dB (6.6 dB) 
 
 
 
7.2 dB (6.8 dB) 
Rate 7/8 (16-QAM) 
Guaranteed Eb/No: 
(typical value in 
parentheses) 
 
8.1 dB (7.7 dB) 
 
 
 
8.3 dB (7.9 dB)