Measurement Accuracy - Keysight N1913 User Manual

7 Using U2000 Series USB Power Sensors

Measurement Accuracy

Power sensors have small errors in their response over frequency. The response of
each sensor is measured during manufacture to determine correction factors.
With U2000 Series USB power sensors, correction factors are stored in a 3 MB
Flash memory and are downloaded to the power meter automatically. Ensure that
the USB power sensor is zeroed. Calibration is not required as it is performed
internally.
Using calibration factors enables improved measurement accuracy. This section
describes making average power measurements using the U2000 Series USB
power sensors.
Making a measurement requires the following steps:
1 Zero the power meter/power sensor combination.
2 Set the frequency for the signal you want to measure.
3 Make the measurement.
Table 7-1 Power sensor connection requirements
Sensor Connection Requirements
U2000A
These power sensors connect directly to the POWER REF when performing external zeroing.
U2000H
U2001A
U2001H
U2002A
U2002H
U2004A
U2000B These power sensors are configured with an attenuator. Do not remove the attenuator when performing
U2001B external zeroing.
Procedure
1 Zero the power meter/power sensor combination.
2 Ensure the power sensor is disconnected from any signal source.
3 Press
200
and the channel
Zero
softkey. Select the required channel.
Keysight N1913/1914A User's Guide