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7
Using U2000 Series USB Power Sensors
Introduction
The U8480 Series USB thermocouple sensors are true average, wide dynamic
range RF microwave power sensors. They are based on a dual sensor
diode pair/attenuator/diode pair.
This technique ensures the diodes in the selected signal path are kept in their
square law region, thus the output current (and voltage) is proportional to the
input power. The diode pair/attenuator/diode pair assembly can yield the average
of complex modulation formats across a wide dynamic range, irrespective of
signal bandwidth. The dual range Modified Barrier Integrated Diode (MBID)
package includes further refinements to improve power handling allowing
accurate measurement of high level signals with high crest factors without
incurring damage
These sensors measure average RF power on a wide variety of modulated signals
and are independent of the modulation bandwidth. They are ideally suited to the
average power measurement of multi-tone and spread spectrum signals such as
CDMA, W-CDMA and digital television formats.
Please refer to the documentation supplied with your U8480 Series USB
thermocouple sensors for specification and calibration information.
The U2000 Series power sensors with firmware revision of A1.02.01 and below
NOTE
are tested with the N1913A/N1914A EPM Series power meters.
[1] November 1986 Hewlett-Packard Journal pages 14-2, "Diode Integrated Circuits for
[2] Refer to U2000 Series Operating and Service Guide for maximum power handling specifications.
196
[2]
to the sensor.
Milimeter-Wave Applications.
Keysight N1913/1914A User's Guide
[1]
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