Nortel SR1001, Руководство по установке, Страница: 69 / 82

57
SR1001 Installation Guide
Version 8.3.5
LAN Interfaces
The following table provides information about Ethernet interface.
Table 19: E1 WAN Interface
Receive line rate 2.048 Mbps ± 50 ppm (payload = 1.984 Mbps)
Line code HDB3
Framing crc
non-crc (ITU G.704)
unframed
Input signal 0 to -32 db
Output signal ITUG.703
Impedance 75 ohm
120 ohm
Connectors RJ-48C
Timing internal
network
Table 20 Specifications: Serial Interface
Input signal 150 mV peak-to-peak minimum
1 V peak-to-peak maximum
Output signal Electrically balanced with NRZ encoding
Impedance Transmitter: 330 ohm
Receiver: 110 ohm
Transmission rates 44.7 Mbps
Connectors 50-position Molex
Timing Looped or internal (selectable)
Clock Variable
Standards compliance TIA/EIA-612
TIA/EIA-613
Table 21 Specifications: V.35 Interface
Input signal 150 mV peak-to-peak minimum
1.2 V peak-to-peak maximum
Output signal Electrically balanced with NRZ encoding
Impedance Transmitter: 100 ohm
Receiver: 100 ohm
Transmission rates 8 Mbps
Connector DB-60
Timing Looped or internal
Clock Variable
Standards compliance V.35