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OLTS-85
39
5 T
IER
1 L
OSS
T
EST
O
PERATION
R
EFERENCING
METHODS
One jumper reference for multi-mode fiber
Fig. 12 One jumper reference: multi-mode remote and multi-mode
loopback
For more information on performing a measurement refer to
Reference connector to reference connector mated loss: 0.1 dB
Reference connector to random connector: ISO 14763-3: 0.3 dB,
TIA 568.3/ISO 11801: 0.75 dB
Random to random connector: 0.75 dB
Splice loss: 0.3 dB
Limit
14763-3
= Length of fiber * Loss/km + L
conn2
(0,3 dB) + L
conn3
+ L
conn4
+
L
splice5
+ L
conn6
(0.3 dB)
= 0.6 dB + Length of fiber * Loss/km (dB) + 0.75 dB + 0.75 dB +
0.3 dB
Limit
TIA/11801
= Length of fiber * Loss/km + L
conn2
(0.75 dB) + L
conn3
+ L
conn4
+
L
splice5
+ L
conn6
(0.75 dB)
= 1.5 dB + Length of fiber * Loss/km (dB) + 0.75 dB +
0.75 dB+0.3 dB