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8.
Testing the Live Portion of the System
8.1
This section describes how to calculate the loss budgets of the LIVE portion 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 one loss budget for the LIVE system (Figure 9).
Table 1 indicates the system loss values of the system components:
Component
MTP® mated pair loss
LC mated pair loss
Splitter 50/50 (dB)
Splitter 30/70 (dB)
1
Insertion loss specifications when mated to other system components of a like
performance specification
8.2.
To calculate the system loss for the LIVE system, add the loss values of the components that
are in the system as illustrated in Figure 9.
LC mated
pair
0.10
+
Tap port
test harness
0.30
MTP
mated pair
"Near end"
HPA-0998-EDGE8
STANDARD RECOMMENDED PROCEDURE 003-139-AEN | ISSUE 1 | JANUARy 2017 | PAGE 6 OF 13
Multimode Fiber
optimized 50µm
Loss, max (dB)
Table 1: System Loss Values
Budget loss for a LIVE multimode system using OM4 fiber and 50 /50 splitters:
MTP
50/50
mated pair
splitter
+
+
0.30
3.7
EDGE8 Tap Module "A"
OM4
Ultra-bendable
(850 nm)
1
0.30
0.15
3.7
1.80/5.80
0.10 +0.30 +3.70 + 0.30 +0.25 + 0.10 = 4.75 dB + fiber loss
Note: Fiber loss
depends on length
of system
Single-Mode Fiber
Bend-improved
single-mode
(1310 nm)
Loss, max (dB)
1
0.35
0.25
3.5
5.80/2.10
LC mated
MTP
pair
mated pair
+
0.25
0.10
EDGE8 Module "B"
"Far end"
Figure 9