T640 Routing Engine Interface Cable And Wire Specifications; Table 72: Cable And Wire Specifications For Routing Engine Management And - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
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T640 Routing Engine Interface Cable and Wire Specifications

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448
P = 13 dB – 8 km (0.5 dB/km) – 7(0.5 dB)
M
P = 13 dB – 4 dB – 3.5 dB
M
P = 5.5 dB
M
In both examples, the calculated power margin is greater than zero, indicating that the
link has sufficient power for transmission and does not exceed the maximum receiver
input power.
Supported Network Interface Standards by Transceiver
Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion on page 445
Table 72 on page 448 lists the specifications for the cables that connect to management
ports and the wires that connect to the alarm relay contacts.
Table 72: Cable and Wire Specifications for Routing Engine Management
and Alarm Interfaces
Port Cable Specification
Routing Engine RS-232 (EIA-232) serial
console or cable
auxiliary
interface
Routing Engine Category 5 cable or
Ethernet equivalent suitable for
interface 100Base-T operation
Alarm relay Wire with gauge
contacts between 28-AWG and
14-AWG (0.08 and 2.08
2
mm )
T640 Routing Engine Description on page 33
T640 Connector Interface Panel (CIP) Description on page 56
Cable/Wire Maximum
Supplied Length
One 6-ft (1.83-m) 6 ft
length with (1.83 m)
DB-9/DB-9
connectors
One 15-ft (4.57-m) 328 ft
length with (100 m)
RJ-45/RJ-45
connectors
NO None
Copyright © 2013, Juniper Networks, Inc.
Router
Receptacle
DB-9 male
RJ-45
autosensing
—