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Strata CTX670 Installation
Remote Expansion Cabinet Unit
Strata CTX I&M 06/04 4-59
Strata CTX670
Installation
Figure 4-42 ROMS1A Subassembly
The fiber connection must conform to both the Optical Budget and Fiber Length specifications. It
is possible to have a fiber connection longer than 3 km with less than 9 dB of loss; however, the
CTX670 Remote Expansion Cabinet is sensitive to signal delay and cannot be guaranteed to
operate at distances greater than 3 km.
Table 4-15 Fiber Optic Specification
Item Specification
Transmission Speed 155.52 Mbps
Optical Source LED, 1300 nm
Fiber Type Multi-mode, Graded Index Fiber (GIF)
Core Diameter
62.5 micrometers
Cladding Diameter 125 micrometers
Connector Type SC (2-pin transmit and receive)
Maximum Fiber Length
3 km (500~1000 MHz/km fiber)
2 km (200~400 MHz/km fiber)
Optical Budget (Loss) 9 dB (one way)
Minimum Bend Radius 30 mm
Round Trip Delay Time 30
micro seconds.
Transmit Power >= -23.5 dBm
Receiver Sensitivity <= -30 dBm
TX Side RX Side
4379
ROMS1A
SD
RDER
SYCF
SYCS
RST
CD1
CD2
CD3
CD4
CD5
J3
J1
1
15
1
10
J2
J4
111
11
1
-24v
DG
PFT-CONTROL
Optical
Module
Plastic
Cap
Remove
Rubber Cap
to plug in
Fiber Optic
Cable
Fiber Optic
Cable
CAUTION! Inserting the fiber
connector at an angle or
too forcefully can cause