4190-9010 Coupler Requirements; Table 5-3 Dual Fiber Optic Cable Communications Distance Examples; Table 5-4 Single Fiber Optic Cable Communications Distance Examples Using 4190-9010 Bi-Directional Couplers - Simplex 4100U Installation & Maintenance

Step 4. Wiring Network Cards,
4190-9010 Coupler
Requirements
1
Fiber Type
50/125
numerical
aperture = 0.2
62.5/125
numerical
aperture = 0.275
Continued
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
1*
MIFL
Fiber Type
4 dB/km
50/125
numerical
aperture = 0.2
3 dB/km
4 dB/km
62.5/125
numerical
3.75
aperture = 0.275
dB/km
*See notes at bottom of page.
Table 5-4. Single Fiber Optic Cable Communications Distance Examples
Using 4190-9010 Bi-Directional Couplers
Power
2
MIFL
Margin
3 dB/km
2 dB
3.2 dB/km
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.
Power
2
Distance
Margin
4 dB 10,000 ft (3.05 km)
3 dB 15,000 ft (4.57 km)
4 dB 13,000 ft (3.96 km)
3 dB 15,000 ft (4.57 km)
3
Distance Budget
7,650 ft
(2.33 km)
21.4 dB
8,200 ft
(2.5 km)
5-14
3
Budget
17 dB
21.4 dB
4190-9010 ST to ST
3
Coupler Loss Coupler Loss
9.4 dB
Continued on next page
3
3 dB
2 dB