Viavi SmartClass OLTS-85 Operating Manual page 118

15 A - R
PPENDIX EFERENCING
L R R
OOPBACK AND EMOTE EFERENCING
TX
C1
S
0.2 dB
0.5 dB
0.75 dB
0.75 dB
0.3 dB
118
M
ETHODS
RX
C4
P
Fig. 36 One jumper reference - bidirectional (switching source and
powermeter mode)
C1 Connection 1
C4 Connection 4
TX Laser source output (Transmitter)
RX Powermeter input (Receiver)
S Source device
P Powermeter device
Measured loss = Δ
Conn. 2
This reference removes any loss at the connection between the
instrument in source mode and the reference test jumper (both
directions). However, the loss at the connection from instrument
in source mode's reference jumper to the fiber under test and
the connection from the fiber under test to the instrument in
powermeter mode's reference jumper will not be referenced out.
Example for Loss Length Test mode (single-mode fiber):
Reference connector to reference connector mated loss
Reference connector to random connector ISO 14763-3
Reference connector to random connector TIA 568.3/ISO 11801
Random to random connector
Splice loss
RX
C1
P
+ Δ + Δ
FiberUnderTest Conn. 3
TX
C4
S
OLTS-85/OLTS-85P