Table 41: Cable And Wire Specifications For Routing Engine Management - Juniper SRX 5600 Hardware Manual

SRX 5600 Services Gateway Hardware Guide
The power margin (
P
P
P
P
The following sample calculation for an 8 km-long single-mode link with a power
budget (
link loss (
for seven connectors (0.5 dB per connector, or 3.5 dB). The power margin (
calculated as follows:
P
P
P
P
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.
Routing Engine Interface Cable and Wire Specifications
Table 41 on page 200 lists the specifications for the cables that connect to management
ports and the wires that connect to the alarm relay contacts.
Table 41: Cable and Wire Specifications for Routing Engine Management and Alarm
Interfaces
200
Routing Engine Interface Cable and Wire Specifications
Higher-order loss = 0.5 dB
Clock recovery module = 1 dB
) is calculated as follows:
P
M
= P LL
M B
= 13 dB 2 km (1.0 dB/km)
M
= 13 dB 2 dB 2.5 dB
M
= 6 dB
M
) of 13 dB uses the estimated values from Table 40 on page 199 to calculate
P
B
LL ) as the sum of fiber attenuation (8 km @ 0.5 dB/km, or 4 dB) and loss
= P LL
M B
= 13 dB 8 km (0.5 dB/km)
M
= 13 dB 4 dB 3.5 dB
M
= 5.5 dB
M
Port Cable
Specification
Routing Engine RS-232
console or (EIA-232) serial
auxiliary cable
interface
Routing Engine Category 5 cable
Ethernet or equivalent
interface suitable for
100Base-T
operation
5 (0.5 dB) 2 (0.5 dB)
1 dB 0.5 dB 1 dB
7 (0.5 dB)
Cable/Wire Maximum
Supplied Length
One 6-ft (1.83-m) 6 ft (1.83 m)
length with
RJ-45/DB-9
connectors
One 15-ft 328 ft (100 m)
(4.57-m) length
with RJ-45/RJ-45
connectors
0.5 dB [HOL] 1 dB [CRM]
) is
P
M
Receptacle
RJ-45/DB-9 male
RJ-45
autosensing