Standard Recommended Procedure 003-128 | Issue 4 | September 2018 | Page 6 of 13
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 a EDGE
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:
Table 1: System Loss Values
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.
Figure 9
Multimode Fiber
Single Mode Fiber
OM4
Ultra-bendable
optimized 50µm
(850 nm)
Bend-improved
single-mode
(1310 nm)
Component
Loss, max (dB)
1
Loss, max (dB)
1
MTP® mated pair loss
0.35
0.75
LC mated pair loss
0.15
0.25
Splitter 50/50 (dB)
3.7
3.5
Splitter 70/30 (dB)
2.4 / 5.8
2.1 / 5.8
Fiber attenuation
2.8 dB/km
0.4 dB/km
1
Insertion loss specifications when mated to other system components of a like
performance specification
Tap Module “A”
TPA-6133
“Near end”
Budget loss for a LIVE multimode system using OM4 fiber and 50 /50 splitters:
0.35
0.35
0.35
0.15
0.15
3.7
+
+
+
+
50/50
splitter
MTP
mated pair
MTP
mated pair
MTP
mated
pair
0.15 +0.35 +3.7 + 0.35 +0.35 + 0.15 = 5.05 dB + fiber loss
Note: Fiber loss
depends on length
of system
EDGE Module “B”
“Far end”
LC mated
pair
LC mated
pair
B
6
12
11
A
B
5
10
9
A
B
4
8
7
A
B
3
6
PnP
Module
Part Number
Serial
MADE IN MEXICO
5
A
B
2
4
3
A
B
1
2
1
A
W
AR
RA
NTY
VOID
Tap port
test harness
TAP
LIVE
LIVE