Measurement Accuracy; Table 7-1 Power Sensor Connection Requirements - Agilent Technologies N1913a 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
Procedure
1 Zero the power meter/power sensor combination.
2 Ensure the power sensor is disconnected from any signal source.
3 Press
172
Power sensor connection requirements
Sensor Connection Requirements
U2000A These power sensors connect directly to the POWER REF when
U2000H performing external zeroing.
U2001A
U2001H
U2002A
U2002H
U2004A
U2000B These power sensors are configured with an attenuator. Do not
U2001B remove the attenuator when performing external zeroing.
and the channel
N1913A/1914A EPM Series Power Meters User's Guide
Zero
softkey. Select the required channel.