Agilent Technologies Agilent 8166A Instrukcja Obsługi Strona 159

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Signal Conditioning Measurement Operations & Settings
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 159
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 algo-
rithm applied can be queried using “:STATusn:OPERation:CONDition?” on
page 68
Figure 6 Extrapolation and interpolation of attenuator module λ offset table
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