Fluke Versiv Series - About Launch and Tail Cords

Versiv Series Cabling Certification Product Family
Users Manual
202
About Launch and Tail Cords
Launch and tail cords let the tester measure the loss and
reflectance of the first and last connectors in the cabling and also
include them in the measurement of overall loss. Without launch
and tail cords, no backscatter is available before the first
connector nor after the last. To measure the properties of a
connector, the tester must measure the backscatter before and
after the connector.
Fiber Type Set-
tings
IR: The tester uses the index of refraction to calculate the
optical length of the fiber. Each fiber type includes the
value specified by the manufacturer. To use a different IR,
make a custom fiber type. See the Technical Reference
Handbook.
Backscatter: Backscatter is the backscatter coefficient. The
tester uses this value to calculate the reflectance of events
for OTDR tests and the overall ORL for the link. Each fiber
type includes the value specified by the manufacturer. To
use a different backscatter value, make a custom fiber
type. See the Technical Reference Handbook.
Test Limit
Select the correct test limit for the job. Generic limits, such
as General Fiber Optic and Document Only, let you do
tests when no industry-standard limit is applicable and you
do not want to make a custom limit. These limits are in the
Miscellaneous group. To see a different group of limits,
tap MORE, then tap the name of a group.
Some test limits use the measured length of the fiber to
calculate a limit for loss.
Test Limit Set-
tings
This item shows only if the selected test limit calculates a
loss limit for each link. For such limits, enter the number of
connectors and splices in the link. See the Technical
Reference Handbook.
Table 8. Settings for OTDR Tests (cont.)
www.GlobalTestSupply.com
Find Quality Products Online at: sales@GlobalTestSupply.com