Tyco 4100U Wiring Network Cards, Continued, Using 4190-9010 Bi-DirectionalCouplers

Step 4. Wiring Network Cards, Continued

4190-9010 Coupler Requirements

The 4190-9010 Coupler (271-012) is used with the 565-261 Fiber Optic Media Board, revision “C” or higher. Two 4190-9010 Bi-Directional Couplers are required per connection, one at each node.

The 4190-9010 is equipped with type ST connectors. To make type ST to type ST connections, an ST to ST coupler, by others, is required. ST to ST Couplers are available from:

Black Box, part # FO200

Fiber Instrument Sales, part # F1-8101 Newark Electronics, part # 95F2097 (or equivalent)

Table 5-3. Dual Fiber Optic Cable Communications Distance Examples

Fiber Type 1*	MIFL 2	Power	Distance 3	Budget 3
		Margin
50/125	4 dB/km	4 dB	10,000 ft (3.05 km)
numerical				17 dB
aperture = 0.2	3 dB/km	3 dB	15,000 ft (4.57 km)
62.5/125	4 dB/km	4 dB	13,000 ft (3.96 km)
numerical				21.4 dB
	3.75
aperture = 0.275		3 dB	15,000 ft (4.57 km)
	dB/km

*See notes at bottom of page.

Table 5-4. Single Fiber Optic Cable Communications Distance Examples

Using 4190-9010 Bi-Directional Couplers

Fiber Type 1	MIFL 2	Power	Distance 3	Budget 3	4190-9010	ST to ST
		Margin			Coupler Loss	Coupler Loss
50/125			7,650 ft
numerical	3 dB/km					3 dB
			(2.33 km)
aperture = 0.2
		2 dB		21.4 dB	9.4 dB
62.5/125			8,200 ft			2 dB
numerical	3.2 dB/km
			(2.5 km)
aperture = 0.275

Notes for Tables Above:

1.Cable specifications are for 50 or 62.5 micron core with 125 micron cladding, multi- mode graded index fiber. Wavelength = 850 nm.

2.MIFL = Maximum Individual Fiber Loss. Numbers shown are for example reference only, refer to specific cable for exact specification.

3.Maximum cable length is determined by distance listed or by reaching budget value, whichever is shorter. Maximum distances listed for dual fiber cable are shorter than would be calculated. Budget using 4190-9010 Bi-Directional Coupler is the same with either size cable because the coupler input cables are 62.5/125 fiber allowing launch power to be the same.

Continued on next page

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