Toshiba CTX28 manual ROMS1A Subassembly 15 Fiber Optic Specification

Strata CTX670 Installation

Remote Expansion Cabinet Unit

11 J3 1

1

J1

15

1

J2

10

11 J4 1

			-24v
			DG
PFT-CONTROL			SD
	CD1
	CD2		RDER
	CD3		SYCF
	CD4		SYCS
	CD5		RST
		ROMS1A
			Optical
			Module

4379

TX Side

Remove Rubber Cap to plug in

Fiber Optic

PlasticCable

Cap

Fiber Optic

Cable

RX Side

CAUTION! Inserting the fiber connector at an angle or too forcefully can cause

Figure 4-42 ROMS1A Subassembly

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

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.

Installation Strata CTX670

Strata CTX I&M 06/04 4-59