THORLABS PM160T User Manual page 28

PM160(T)
Relative Measurements
By toggling the
urement mode:
The needle scale changes to a zero-symmetric display. '0' is equivalent to the dis-
played reference value (above
ment when the 'Delta' button was pressed. The needle displays the difference
from the reference; this value is shown in numeric representation as well (above:
464.97 nW ).
The actual absolute value is displayed as well
Min and max values are shown on the needle scale as green and yellow markers
and in numerical representation in the
Both values can be reset to the reference value by pressing the
Zeroing
Zeroing is useful to compensate the photo diode's dark current when measuring
low power levels.
·
Cover the sensor's aperture carefully.
·
Press the
·
After successful execution a message appears.
26
button the GUI switches between normal and relative meas-
Ref: 10.511 µW
button.
); this is the readout in the mo-
Abs: 10.976 µW
Min: and Max:
.
boxes.
button.
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