User Manual
Chapter 1. Overview
Page 1-18
P/N 2349-72784-00
Table 1-8:
Telecom (G.703) Input Features and Specifications
FEATURE
SPECIFICATION
Input Impedance
75
Ω
Bit Rate
Unframed E1 (2.048 Mbps), E2 (8.448 Mbps) and E3 (34.368
Mbps)
G.703 Loop Through Output For cascading multiple IRD units. Loopthrough Output Mask
according to G.703 recommendation
De-Interleaving
17/12 (*)
Reed-Solomon Decoding
204, 188, 8 (*)
Input/Output Connectors
E1 balanced (male 9 Pin D-Type)
E1 unbalanced (female BNC)
E2, E3 unbalanced (female BNC)
Additional Features
DVB Descrambler (*)
HDB-3 Line code
Switchable FEC (Forward Error Correction)
* The FEC includes Interleave, Reed-Solomon Decoder (188, 216) and Descrambler; in
accordance with the DVB standard for Cables (ETS 300 429), which can be switched On/Off.
Table 1-9:
PDH 34Mbit/s input [E3]
Feature
Specification
E3 Framed
34.368Mbit/s
Frame:
G.832
ATM adaptation layer:
AAL1
Error correction:
RS(124,128) with Interleaving matrix
Connector:
BNC female, 75Ω
Loop-through output
Available
Table 1-10:
PDH 45Mbit/s input [ DS3 ]
Feature
Specification
DS3
44.736Mbit/s
Frame:
ETS 300813
ATM adaptation layer:
AAL1
Error correction:
RS(124,128) with Interleaving matrix
Connector:
BNC female, 75Ω
Max MPEG TS bit rate:
37.9 Mbit/s
Loop-through output:
Available