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Measuring Power
Measuring Absolute and Relative Power
Setting the Measurement Mode
The "Mode" parameter explains the measured values on the screen.
It shows two settings:
• Left: The measurement mode of head A (the meaning of the A-
value)
• Right: The measurement mode of head B (the meaning of the B-
value)
The standard settings are: The A-value is the power measured at
head A, the B-value is the power measured at head B. However, you
can change these settings.
The A-value can be the power measured at head A, the power
measured at head A divided by the power measured at head B, or
the power measured at head A divided by the stored reference
value.
The B-value can be the power measured at head B, the power
measured at head B divided by the power measured at head A, or
the power measured at head B divided by the stored reference
value.
How to Change the Measurement Mode
If you want to change the measurement mode, proceed as follows:
1 The parameter "Head" indicates the active optical head. If it does
not indicate the head whose mode you want to change, press
H
A
or
H
B
EAD
EAD
points to the active head, too.
2 Press
M
A
or
M
ODE
3 Press the same key repeatedly to change the measurement mode
from A/Ref to A/B to A as described above.
78
respectively. Note that the
B
respectively.
ODE
M
softkey
ODE
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