EXFO PM-1100 Optical Power Meter - Manual (Page 45)

Operating the Optical Power Meter
Optical Power Meter 35
Customizing Your Optical Power Meter
Setting an Offset
An offset can be applied to any measurement that is displayed in either dB
or dBm. The offset value, which can be positive or negative, is always
expressed in dB and is added to the measured power. Offset On appears to
the left of the display when an offset is being used. Offsetting the measured
power is useful when compensating for known power losses or applying a
calibration offset.
Note: The offset is only applied when dB or dBm units are selected.
To set an offset:
1. Press Setup.
2. Scroll (left/right arrows) to OFFSET.
3. Press ENTER. The offset symbol (- or +) will start flashing.
4. Set a new offset (use the up/down arrows to change the flashing
segment and the left/right arrows to activate the next segment).
5. Press ENTER.
6. To exit the Setup menu, press Setup.
Note: To deactivate the offset, you must set it to 0. Offset On will no longer appear
in the lower left portion of the display.
dB