EXFO PM-1600 High-Speed Power Meter - Manual (Page 40)

Acquiring Power Measurements
30 PM-1600
Setting a Correction Factor
Setting a Correction Factor
Applying a correction factor to the measured power is useful when
compensating for known inaccuracies (power gains or losses).
When a dB correction factor other than +0.000 is defined, the displayed
power is equal to the actual power plus the value of the correction factor.
When a W/W correction factor other than 1.0000 is defined, the displayed
power is equal to the actual power times the value of the correction factor.
With an active correction factor, the CF marker appears at the top of the
display for the matching channel.
Note: Setting a correction factor emulates a new calibration (the PM-1600's
calibration is not affected and will be restored by setting back the CF to a
null value).
When expressed in dB, the correction factor can be a positive or negative
value. When the currently selected measurement unit is W, the correction
factor is expressed in W/W, indicating a multiplication factor for the current
wavelength and channel. The correction factor expressed in W/W will
always be a positive value.
To select a correction factor,
1. Press
λ
to select the appropriate wavelength, then Setup to access the
Setup menu, then use the up/down arrow keys to select Wavelength
List & Corr. Factor, and press ENTER.
Or
Follow steps 1 to 4 in section on viewing the wavelength list on
page 25. Select the wavelength by pressing ENTER.
Note: You can also select the wavelength while in the Wavelength List & Corr.
Factor menu by pressing
λ
.
2. Use the up/down arrow keys to select CF Ch 1 or CF Ch 2 (PM-1620).
The current correction factor for the matching wavelength is displayed
in dB or W/W, depending on the currently selected measurement unit.
Acquiring Power Measurements
30 PM-1600
Setting a Correction Factor
Setting a Correction Factor
Applying a correction factor to the measured power is useful when
compensating for known inaccuracies (power gains or losses).
When a dB correction factor other than +0.000 is defined, the displayed
power is equal to the actual power plus the value of the correction factor.
When a W/W correction factor other than 1.0000 is defined, the displayed
power is equal to the actual power times the value of the correction factor.
With an active correction factor, the CF marker appears at the top of the
display for the matching channel.
Note: Setting a correction factor emulates a new calibration (the PM-1600's
calibration is not affected and will be restored by setting back the CF to a
null value).
When expressed in dB, the correction factor can be a positive or negative
value. When the currently selected measurement unit is W, the correction
factor is expressed in W/W, indicating a multiplication factor for the current
wavelength and channel. The correction factor expressed in W/W will
always be a positive value.
To select a correction factor,
1. Press
λ
to select the appropriate wavelength, then Setup to access the
Setup menu, then use the up/down arrow keys to select Wavelength
List & Corr. Factor, and press ENTER.
Or
Follow steps 1 to 4 in section on viewing the wavelength list on
page 25. Select the wavelength by pressing ENTER.
Note: You can also select the wavelength while in the Wavelength List & Corr.
Factor menu by pressing
λ
.
2. Use the up/down arrow keys to select CF Ch 1 or CF Ch 2 (PM-1620).
The current correction factor for the matching wavelength is displayed
in dB or W/W, depending on the currently selected measurement unit.