Using the Power Sensor
Graphical User Interface
MA24104A UG
PN: 10585-00016, Rev. A
3-9
Offset Table
The Offset Table feature provides the ability to apply corrections to measurements when RF devices are
used between the sensor and DUT. Offset Table is different from Fixed Offset as it provides the ability to
enter different offset values at different frequencies for an RF device. The frequency response of that
device needs to be known before it can be entered. Offset Table employs linear interpolation to determine
offset values for intermediate frequencies. In cases where the cal factor frequency is higher than the
highest frequency in the offset table, then the offset for the highest frequency in the table is used.
Similarly, when the cal factor frequency is lower than the lowest frequency in the offset table, then the
offset for the lowest frequency in the offset table is used.
The procedure for setting, saving, recalling, and applying the offset table is as follows:
1. Click
OffsetTable
and select
Setup
.
2. In the resulting dialog (Figure 3-15), enter the frequency response of the RF device manually or by
importing an S2P file used to measure the DUT.
3. Click
Apply
in the Offset Entry screen to correct the measurement.
The word Offset appears in the display window indicating that an offset table correction is applied
to the current measurement. Also, a check mark is applied in front of the Offset Table On selection
in the OffsetTable menu.
4. To clear all of the entries in the table, click the Clear Table button.
Note: Positive values in dB are used for attenuation.
Figure 3-15. Offset Entry Screen
