N8480 Series Power Sensors With Option Cft; Frequency Specific Calibration Factors - Keysight N1911A User Manual

N8480 Series Power Sensors with Option CFT

Power sensors have small errors in their response over frequency. The response of
each sensor is measured during manufacture (and during periodic calibration).
The calibration factor table written into Electrically Eraseable Programmable Read
Only Memory (EEPROM) is not applicable for N8480 Series power sensors with
Option CFT. Therefore, the response of each sensor is measured during
manufacture (and during periodic calibration) and the resulting frequency
compensation information is supplied in the form of calibration factors. The
P-Series power meters provide two methods of using the calibration factors:
– inputting the individual calibration factor for a frequency prior to making the
– using sensor calibration tables.
If you are making most of your measurements at a single frequency, or in a narrow
range of frequencies, entering a specific calibration factor is a more effective
method. Only a minimal amount of data entry is required.
However, if you are making measurements on a wide range of signal frequencies,
a sensor table is more effective as you only need to enter the frequency of the
signal you are measuring. The power meter automatically selects and applies the
calibration factor from the selected table.

Frequency specific calibration factors

This section shows you how to make a measurement using the calibration factor
for the frequency of the signal you want to measure.
TIP
Using this method requires the following steps:
1 Zero and calibrate the power meter/sensor combination.
2 Set the calibration factor value for the frequency of the signal you want to
3 Make the measurement
Keysight N1911A/1912A User's Guide
measurement, or
This method is best suited to making several measurements at one
frequency as you need only enter a small amount of data.
measure.
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