196 8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
4 Measurement Operations & Settings
The table of wavelength-dependent offsets
When enabled, the attenuator uses its
λ offset table to compensate for
wavelength dependent losses in the test set-up. This table contains, for
each wavelength specified, the additional power offset to be applied.
• If the attenuator module is set to a wavelength corresponding to an
entry in its λ offset table, the stored offset is added to the global power
offset.
• If the attenuator module is set to a wavelength between entries in its λ
offset table, linear interpolation is used to calculate the appropriate
offset to add to the global power offset.
• If the attenuator module is set to a wavelength beyond the range of the
entries in its λ offset table, the offset stored for the nearest wavelength
is added to the global power offset.
• Whether an exact, interpolated, or extrapolated offset value is applied,
the algorithm applied can be queried using
:STATusn:OPERation:CONDition? on page 59
Figure 6 Extrapolation and interpolation of attenuator module λ offset table
To Next Page
Loading...
