Viavi SmartClass Fiber OLTS-85 User Manual page 43

Limit = Length of fiber * Loss/km + L
14763-3
= 0.4 dB + Length of fiber * Loss/km (dB) + 0.75 dB + 0.75 dB +
Limit = Length of fiber * Loss/km + L
TIA/11801
= Length of fiber * Loss/km (dB) + 0.75 dB + 0.75 dB + 0.3 dB
OLTS-85
Three jumper reference for multi-mode fiber
Fig. 16 Two jumper reference: multi-mode remote and multi-mode
loopback
For more information on performing a measurement refer to
Fig. 18.
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
L L + L
conn4 + splice5 conn6
0.3 dB
L + L (0 dB)
splice5 conn6
Performing a measurement
Independent from the reference method your device under test
(DUT) should be connected like this:
Fig. 17 Remote and loopback measurement
5 T
IER
(0.3 dB – 0.1 dB) + L
conn2
(0.3 dB – 0.1 dB)
(0 dB) + L
conn2
1 L T O
OSS EST PERATION
R
EFERENCING METHODS
+
conn3
+ L
conn3 conn4 +
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