STANDARD RECOMMENDED PROCEDURE 003-139-AEN | ISSUE 1 | JANUARy 2017 | PAGE 9 OF 13
9. Testing the Tap Portions of the System
NOTE:
Testing of the TAP portions of a system is not required by Corning to obtain the extended
warranty. The testing of the LIVE link confirms the post-installation condition of the of the trunk since
the module itself is factory-tested and is not deployed like a trunk.
9.1
This section describes how to calculate the loss budgets of the TAP portions of a system using
an EDGE88 MTP Tap Module and how to test that portion of the system. Note that you will need to
calculate
two
loss budgets for the Tap portion system (Figures 12 and 13).
Table 1 above indicates the system loss values of the system components.
9.2
. To calculate the system loss for the TAP system, add the loss values of the components that are
in the system as illustrated in Figures 12 and 13.
Figure 12
Figure 13
EDGE8 Tap Module “A”
HPA-1002-EDGE8
Budget loss for a Tap multimode system using OM4 fiber and 50 /50 splitters:
0.30
0.30
0.10
3.7
+
+
+
+
50/50
splitter
MTP
mated pair
MTP
mated pair
0.10 +0.30 +3.7 + 0.30 + 0.10 =
4.5 dB
LC mated
pair
0.10
LC mated
pair
Tap port
test harness
Tap port
test harness
EDGE8 Tap Module “A”
HPA-1003-EDGE8
“Near end”
Budget loss for a LIVE multimode system using OM4 fiber and 50 /50 splitters:
0.30
0.30
0.25
0.10
0.10
3.7
+
+
+
+
50/50
splitter
MTP
mated pair
MTP
mated pair
MTP
mated pair
0.10 +0.30 +3.7 + 0.30 +0.25 + 0.10 =
4.75 dB + fiber loss
Note: Fiber loss
depends on length
of system
EDGE8 Module “B”
“Far end”
LC mated
pair
LC mated
pair
Tap port
test harness
