General Power Meter Functions 2
N1911A/1912A P-Series Power Meters User’s Guide 45
Figure 2-29 Frequency dependent offset indicator
5 To change the frequency, press and use the and keys to
highlight the Frequency field.
6 Press to display the Frequency pop- up window. Use the numeric
keypad to enter the required value in the Frequency pop- up window.
7 To confirm your choice, press the appropriate unit softkey.
8 Connect the power sensor to the signal to be measured.
9 The measurement result, including offset, is now displayed.
Editing Frequency Dependent Offset Tables
There are ten frequency dependent offset tables named CUSTOM_A through
CUSTOM_J. They are empty of any data when the power meter is shipped
from the factory.
You cannot delete any of the 10 existing frequency dependent offset tables
or create any additional tables. However, you can enter values into the 10
existing tables. Each frequency dependent offset table can contain a
maximum of 80 frequency points.
If the measurement frequency does not correspond directly to a frequency in the sensor
calibration table (if selected) and the frequency dependent offset table being used, the
power meter calculates the calibration factor and offset using linear interpolation.
If you enter a frequency outside the frequency range defined in the sensor calibration table
or the frequency dependent offset table, the power meter uses the highest or lowest
frequency point in the appropriate table to set the calibration factor and offset.
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