Table 49: Cable and Wire Specifications for Routing Engine Management and Alarm Interfaces
Routing Engine
Receptacle
Maximum
Length
Cable/Wire Supplied
Cable Specification
Port
RJ-45 female
6 ft (1.83 m)
One 6-ft (1.83-m) length
with RJ-45/DB-9
connectors
RS-232 (EIA-232) serial
cable
Routing Engine
console or auxiliary
interface
RJ-45
autosensing
328 ft (100 m)
One 15-ft (4.57-m) length
with RJ-45/RJ-45
connectors
Category 5 cable or
equivalent suitable for
100Base-T operation
Routing Engine
Ethernet interface
Signal Loss in Multimode and Single-Mode Fiber-Optic Cable for the
SRX5600 Services Gateway
Multimode fiber is large enough in diameter to allow rays of light to reflect internally (bounce off the walls
of the fiber). Interfaces with multimode optics typically use LEDs as light sources. LEDs are not coherent
sources, however. They spray varying wavelengths of light into the multimode fiber, which reflects the
light at different angles. Light rays travel in jagged lines through a multimode fiber, causing signal dispersion.
When light traveling in the fiber core radiates into the fiber cladding, higher-order mode loss (HOL) results.
Together these factors limit the transmission distance of multimode fiber compared to single-mode fiber.
Single-mode fiber is so small in diameter that rays of light can reflect internally through one layer only.
Interfaces with single-mode optics use lasers as light sources. Lasers generate a single wavelength of light,
which travels in a straight line through the single-mode fiber. Compared with multimode fiber, single-mode
fiber has higher bandwidth and can carry signals for longer distances. It is consequently more expensive.
Attenuation and Dispersion in Fiber-Optic Cable for the SRX5600 Services
Gateway
Correct functioning of an optical data link depends on modulated light reaching the receiver with enough
power to be demodulated correctly. Attenuation is the reduction in power of the light signal as it is
transmitted. Attenuation is caused by passive media components, such as cables, cable splices, and
connectors. While attenuation is significantly lower for optical fiber than for other media, it still occurs in
both multimode and single-mode transmission. An efficient optical data link must have enough light available
to overcome attenuation.
179
Summary of Contents for SRX5600
Page 1: ...SRX5600 Services Gateway Hardware Guide Published 2020 02 14 ...
Page 23: ......
Page 105: ...LEDs 106 ...
Page 114: ...Figure 51 SRX5K MPC g030309 MPC empty 115 ...
Page 124: ...Port and Interface Numbering 125 ...
Page 130: ...Port and Interface Numbering 131 ...
Page 156: ......
Page 185: ......
Page 193: ...Figure 84 Installing the Front Mounting Hardware for a Four Post Rack or Cabinet 196 ...
Page 239: ......
Page 285: ...c Upload the configuration to RE2 from the USB device 288 ...
Page 372: ...5 CHAPTER Troubleshooting Hardware Troubleshooting the SRX5600 377 ...
Page 373: ......
Page 407: ......
Page 420: ...423 ...
Page 423: ...Restricted Access Area Warning 426 ...
Page 430: ...433 ...
Page 443: ...Jewelry Removal Warning 446 ...
Page 446: ...Operating Temperature Warning 449 ...
Page 456: ...DC Power Disconnection Warning 459 ...
Page 460: ...DC Power Wiring Sequence Warning 463 ...
Page 463: ...DC Power Wiring Terminations Warning 466 ...
Page 466: ...DC Power Disconnection Warning 469 ...
Page 470: ...DC Power Wiring Sequence Warning 473 ...