General Power Meter Functions 2
N1913/1914A EPM Series Power Meters User’s Guide 43
2 Use the and keys to highlight one of the 10 table titles and
press ( or for dual channel) to highlight .
3 Press to complete the selection of the offset table.
4 Press again to display the measurement screen. Figure 2- 9
shows which offset table is selected.
Figure 2-9 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.
When no data is contained in the highlighted table, the key is disabled (grayed out).
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.