Viavi SmartClass OLP-85 Series Operating Manual page 71

OLP-85/OLP-85P
C1 Connection 1
C4 Connection 4
C2 Connection 2
C3 Connection 3
TX Laser source output (Transmitter)
RX Powermeter input (Receiver)
S Source device
P Powermeter device
Δ Δ
The losses ( ) at
Conn. 1
referenced out, so the loss measurement is as follows:
Δ
Measured loss =
FiberUnderTest
This reference removes any loss at all the connections. A third
reference jumper is used. Just as with the other test jumpers, the
loss of this short reference jumper will not affect the loss
measurement.
By using a three-jumper reference, no connection loss is added
to the measured loss of the fiber under test.
11 A - R
PPENDIX
Δ Δ
, , and
Conn. 2 Conn. 3
M
EFERENCING ETHODS
R R
EMOTE EFERENCING
Δ
are
Conn. 4
71