User manual

Chapter 1. Introduction
1-4 Multiplexer Unit : Apr 2003
1.3 Technical Specifications
E1 Link
Framing Unframed (transparent)
Bit Rate 2.048 Mbps
Line Code AMI
HDB3
Line Impedance Unbalanced 75 ohms (BNC)
Balanced 120 ohms (RJ-45)
Receiver sensitivity -20dB
"Pulse" Amplitude Nominal 2.37V?10% for 75 ohms
Nominal 3.00V?10% for 120 ohms
"Zero" Amplitude ?0.3V
Transmit Frequency Tracking
Internal Timing
(w/external clock card option)
?30 ppm
Jitter Performance According to ITU-T G.823
Complies With ITU-T G.703, G.706 and G.732
Interface Connectors RJ-45
BNC
Test Loops LLB (Local Loop Back)
NELB (Near End Loop Back)
RLB (Remote Loop Back)
RRLB (Request Remote Loop Back)
T1 Link
Framing Unframed (transparent)
Bit Rate 1.544 Mbps
Line Code AMI
B8ZS
Line Impedance Balanced 100 ohms (RJ-45)
Receiver sensitivity -20dB
"Pulse" Amplitude Nominal 3.00V?10% for 100 ohms
"Zero" Amplitude ?0.3V
Transmit Frequency Tracking
Internal Timing
(w/external clock card option)
?30 ppm
Jitter Performance According to ITU-T G.824
Complies With ITU-T G.703, G.706 and G.733
Interface Connectors RJ-45
Test Loops LLB (Local Loop Back)
NELB (Near End Loop Back)
RLB (Remote Loop Back)
RRLB (Request Remote Loop Back)