Section A: Calculating the single mode component mean loss
The
fiber cable manufacturer should provide either the component mean
(average) loss or worst-case specification data. If the mean value
is not available, use the worst-case specification data to complete
Section A. If the manufacturer's data is not available, use the typical
component loss values from Table 1.
Connections: Multiply the average connection loss value by the total number of connections in the link. Connections to coupling facility channel-capable or FICON®-capable devices are included in the device specification and should not be included in the
connection calculation.
Notes:
- A link consisting of one IBM® duplex-to-duplex jumper cable is considered to have no connections when calculating the link loss.
Splice Loss: Multiply the splice loss value by the total
number of link splices. If the link has both mechanical and fusion
splices, calculate the losses separately, then enter the total on
the work sheet.
Note: Because a single mode link can be up to 20
kilometers (12.4 miles) and fiber cable is available in reels of from
1 to 7 kilometers (0.62 to 4.35 miles), single mode trunk cable could
require “reel-to-reel” splicing. If this loss is included
in the trunk cable loss, do not include it in the splice loss
calculation. If not certain about whether to include this value,
contact your marketing representative.
Jumper Cable Loss: Multiply the combined length of the jumper cables in kilometers by the jumper cable loss per kilometer.
Trunk Cable Loss: Multiply the total length of the trunk cable in kilometers by the cable loss per kilometer.