How To Set The Wavelength; How To Set The Averaging Time; Compensating For Wavelength Dependencies In Your Test Setup; Applying An Offset Table - Keysight Technologies N77 Series User Manual

2 Attenuation

How to Set the Wavelength

How to Set the Averaging Time

Compensating for Wavelength Dependencies in your test setup

Applying an Offset Table

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Before taking a power measurement, make sure the source is warmed up so that
N O T E
its power output is stable.
1 Measure the insertion loss of the components between the
attenuator output and the DUT, using a reference power meter.
2 Enter the result into the P Offset parameter.
This is the wavelength value of the signal to be measured. The
responsivity of the power meter varies with wavelength.
This is the length of time over which a signal is averaged to produce a
measured value. Longer averaging times increase the stability and
improve the noise rejection.
The averaging time of the power meter and power monitor in the
attenuator can be set over a wide range from 2ms to 1s.
Please note, even if you set a longer averaging time, internally the power
control always works with an average time of 2ms to achieve best input
power correction.
For the P
Wavelength Offset Table.
When P
wavelength you set for the attenuator.
(l) parameter select <On> to enable or <Off> to disable the
Offset
(l) is enabled, the offset applied depends on the operating
Offset
Keysight N77xx Series