Measurement Accuracy - Agilent Technologies N1911A User Manual

4 Using E9320 E-Series Power Sensors

Measurement Accuracy

Power sensors have small errors in their response over frequency. The
response of each sensor is measured during manufacture (and during
periodic calibration). With E- Series power sensors, the resulting frequency
compensation information is written into Electrically Eraseable
Programmable Read Only Memory (EEPROM). This allows the frequency
and calibration data to be downloaded to the power meter automatically.
Using calibration factors enables you to achieve improved measurement
accuracy. This section describes making continuous wave measurements
using the E9320 E- Series power sensors.
Making a measurement requires the following steps:
1 Zero and calibrate the power meter/sensor combination.
2 Set the frequency for the signal you want to measure.
3 Make the measurement.
Procedure
First zero and calibrate the power meter/sensor combination.
1 Ensure the power sensor is disconnected from any signal source.
2 Press
3 Connect the power sensor to the POWER REF output.
4 Press
136
and the channel
displayed.
and the channel
routine. The Calibrating pop- up is then displayed.
Zero
softkey. The Zeroing pop- up is
Cal
softkey to start the calibration
N1911A/1912A P-Series Power Meters User's Guide