Chapter 1. Introduction
13
May 2011
1.7 Technical Specifications
E1 link
Framing -Unframed/Framed
-CCS (PCM31)/CAS (PCM30)
-CRC4 ON/OFF
Bit Rate 2.048 Mbps
Line Code -AMI
-HDB3
Line Impedance -75 ohms
-120 ohms
Relative Receive Level 0 to -43dB (long haul)
"Pulse" Amplitude -Nominal 2.37V±10% for 75 ohms
-Nominal 3.00V±10% for 120 ohms
"Zero" Amplitude ±0.1V
Transmit Frequency
Tracking
Internal Timing
Loopback Timing
External Timing
±30 ppm
±200 ppm
±200 ppm
Jitter Performance According to ITU-T G.823
Complies With ITU-T G.703, G.704, G.706 and G.732
Interface Connectors -15-pin, D-type Female (DB15 to RJ-45 adapter optional)
-BNC
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