Agilent U2000 Series USB
Power Sensors
Data Sheet
The compact, low-cost
alternative to conventional
power measurement solutions
Why Agilents power meters and sensors?
Reliable, high-performing solutions
Every power meter and sensor from Agilent consistently delivers great results.
A sure investment for many years to come
Code-compatibility between power meters reduces the need for re-coding. Not only that, all Agilent
power meters are backward-compatible with most legacy power sensors.
One specific application: One right solution
Agilent offers a wide selection of power meters and sensors for practically all application needs
wireless communications, radar pulse measurements, component test and more.
Global network support
No matter where you are, Agilent is committed to giving you the 24-hour support you need regarding
our products, applications or services.
Agilents power meters have long been recognized as
the industry standard for RF and microwave
power measurements.
2
Compact solutions for testing today's RF and microwave communication systems
For installation and maintenance
of base stations
Lightweight and rugged
Simple set-up and usage
For production testing of wireless
components
Compact build saves rack space
Simple set-up and usage
For R&D of wireless components
Compact build saves bench space
Simple set-up and usage
Portable with low power consumption
Wide dynamic and frequency ranges
Quick and easy testing with large display
of readings
Wide dynamic and frequency ranges
Fast reading speed
Internal zeroing reduces test time and
sensor wear-and-tear
Quick and easy multiple channels testing
with simultaneous display of readings, limits
and alerts
Seamless integration to system with
industry-standard SCPI
Wide dynamic and frequency ranges
High accuracy
Advanced troubleshooting of designs with
simultaneous display of multiple readings,
measurement math and data recording
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Introducing the U2000 Series USB power sensors
The U2000 Series enable simpler, lower-cost
power measurements versus conventional
power meter and sensor combinations. Now
with nine high-performance models, the U2000
Series USB power sensors offer compact, highperformance solutions for todays CW and
modulated signals.
Key features
Compact, lightweight solutions
Quick, simple set-up
High accuracy, high power
Internal zeroing capability
Fast reading speed
Wide frequency range: 9 kHz
to 24 GHz
Wide dynamic range: 60 dBm
to +44 dBm
Allows remote measurements
beyond cable length
Enables monitoring of more than
20 channels simultaneously
Converts select Agilent
instruments to power meters
Feature-packed software provides
various capabilities for easy testing
and analysis
Average power measurements of
CW and modulated signals, including
GSM, EDGE, WLAN and WiMAX
TM
Compact power meters, simple
set-up
The U2000 Series are standalone sensors. That
means they essentially operate like power
meters, just in smaller forms. No reference
calibrator is required. The fact that each sensor
draws minimal power from a USB portand
that it doesnt need additional triggering
modules or power adaptors to operatemakes
it more portable, especially for base station
testing. Setting up is easy: just plug it to the
USB port of your PC or laptopor even select
network or handheld spectrum analyzerand
start your power measurements. The figure
below illustrates the very simple,
straightforward setup of the U2000 Series.
High accuracy
Each U2000 Series sensor provides excellent
linearity, SWR and uncertainty specifications,
so you can be confident in every measurement
you make.
Wide range, high power
The U2000 Series dynamic range spans across
a wide 80 dB, taking on high power up to +44
dBm.
Remote monitoring and tests
With the U2000 Series sensor plugged to a
networked USB hub, you can conveniently
monitor power measurements of an antenna
tower from the control room, beyond the limits
of USB cable lengths.
USB sensor
DUT
Trigger signal
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Introducing the U2000 Series USB power sensors (continued)
Faster production testing of
multiple channels
The U2000 Series fast measurement speed
of 1000 readings/s in buffered mode helps
reduce test time. This, coupled with the
capability to enable monitoring of more than
20 channels simultaneously, is an advantage
in the production line where efficiency is of
utmost priority.
The U2000 Series has both internal and
external zeroing capabilities. With internal
zeroing, high isolation switches in the sensor
are opened to isolate the sensor from the
device-under-test (DUT) it is connected to. As
such, you dont need to power-off the DUT or
disconnect the sensors. This speeds up testing
and reduces sensor wear-and-tear.
No manual input of calibration data is required.
All calibration factors, as well as temperature
and linearity corrections, are stored in the
sensors EEPROM, auto-downloaded at
calibration.
Often times, youd need to automate your tests.
The U2000 Series sensors are well-equipped
for seamless integration to your system with
industry-standard SCPI compatibility. They also
come with built-in triggering capability to allow
receipt of external triggers from other
instruments.
Transform your signal generators and spectrum analyzers into accurate
power meters
You could literally have a power meter next to youor instead, turn your Agilent MXG signal
generator or N9340A/B handheld spectrum analyzer into a power meter for accurate power
measurements. Even with the U2000 connected, you can switch between power measurements
and the devices original function at any time. You can also use the U2000 with your Agilent PNA
network analyzer for source power calibration.
Intuitive power analysis software
The N1918A Power Analysis Manager software not only displays measurements with the U2000
Series, it also provides various features and functions to help you monitor and troubleshoot
signals efficiently and effectively.
Multiple display types
1
Multiple channel list and measurement math
1. Software capability differs between the two versions of the software: Power Panel and Power Analyzer. Please refer to
Page 17 for detailed comparison
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Data recording with limit and alert settings
Min/Max readings
1
Take a closer look
Built-in triggering port for
synchronization with external
instruments or events
Small and lightweight build
LED indicator for PC communication
Secure locking mechanism
Diode-based sensors frequently rely on the
application of correction factors to extend their
dynamic range beyond their square-law region,
typically in the range of 70 dBm to 20 dBm.
While this technique achieves measurement
of CW signals over a wide dynamic range, it
fails to do so for modulated signals when the
signal level is above the square-law region.
Modulated signals must be padded down, with
their average and peak power levels within
the diode square-law region, for accurate
average power measurement.
The U2000 Series USB power sensors are trueaverage, wide-dynamic-range RF/microwave
power sensors, based on a dual-sensor diode
pair/attenuator/diode pair topology as
proposed by Szente et. al. in 1990
1
. The
simplified block diagram shown here illustrates
this technique.
+
Low Sense
RF in
Low Sense
High Sense
High Sense
+
This technique ensures diodes in the selected
signal path are kept in their square law
regionwith output current and voltage
proportional to input power. The diode
pair/attenuator/diode pair assembly can then
yield the average of complex modulation
formats across a wide dynamic range,
irrespective of signal bandwidth.
USB 2.0-compliant cable
for connection to PC or
other instruments
The dual-range Modified Barrier Integrated
Diode (MBID)
2
package incorporates diode
stacks in place of single diodes. This further
improves measurement accuracy of high-level
signals with high crest factors without
3
incurring damage
to the sensor.
Implementation of both techniques in the
U2000 Series USB sensors enable effective
average power measurements of a wide range
of signals, including multitone and spread
spectrum signals used in CDMA, W-CDMA
and digital television sytems.
1. US Patent #4943764, assigned to Hewlett-Packard Company.
2. November 1986 Hewlett-Packard Journal pages 14-2, Diode Integrated Circuits for Millimeter-Wave Applications.
3. Refer to Maximum Power on page 9 for maximum power handling specifications.
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Specifications
Specifications contained in this chapter are
valid ONLY after proper calibration of the power
sensor and apply to continuous wave (CW)
signals unless otherwise stated. The
recommended calibration interval for this
product is 1 year. Specifications apply over a
temperature range 0 °C to +55 °C unless
otherwise stated. Specifications quoted over
a temperature range of 25 °C ± 10 °C apply to
a relative humidity of 15% to 75% and conform
to the standard environmental test conditions.
Specifications are valid after a 30-minute
warm-up period.
Supplemental characteristics, shown in italics,
are intended to provide useful information with
regard to applying the power sensors in that
they contain typical, but non-warranted
performance parameters. These characteristics
are shown in italics or denoted as typical,
nominal or approximate.
Measurement speed
Normal: 20 readings/s
x2: 40 readings/s
Fast: 110 readings/s
Buffered (50 readings): 1000 readings/s
Frequency and power ranges
Model
U2000A
U2001A
U2002A
U2004A
U2000B
U2001B
U2000H
U2001H
U2002H
Frequency range
10 MHz to 18 GHz
10 MHz to 6 GHz
50 MHz to 24 GHz
9 kHz to 6 GHz
10 MHz to 18 GHz
10 MHz to 6 GHz
10 MHz to 18 GHz
10 MHz to 6 GHz
50 MHz to 24 GHz
Maximum SWR
Model
U2000A
U2001A
U2002A
U2004A
U2000B
U2001B
U2000H
U2001H
U2002H
Frequency range
10 MHz to 30 MHz
30 MHz to 2 GHz
2 GHz to 14 GHz
14 GHz to 16 GHz
16 GHz to 18 GHz
10 MHz to 30 MHz
30 MHz to 2 GHz
2 GHz to 6 GHz
50 MHz to 2 GHz
2 GHz to 14 GHz
14 GHz to 16 GHz
16 GHz to 18 GHz
18 GHz to 24 GHz
9 kHz to 2 GHz
2 GHz to 6 GHz
10 MHz to 2 GHz
2 GHz to 12.4 GHz
12.4 GHz to 18 GHz
10 MHz to 2 GHz
2 GHz to 6 GHz
10 MHz to 8 GHz
8 GHz to 12.4 GHz
12.4 GHz to 18 GHz
10 MHz to 6 GHz
50 MHz to 8 GHz
8 GHz to 12.4 GHz
12.4 GHz to 18 GHz
18 GHz to 24 GHz
Power range
60 dBm to +20 dBm
60 dBm to +20 dBm
30 dBm to +44 dBm
50 dBm to +30 dBm
50 dBm to +30 dBm
(25 °C ± 10 °C)
Max SWR
1.15
1.13
1.19
1.22
1.26
1.15
1.13
1.19
1.13
1.19
1.22
1.26
1.30
1.13
1.19
1.12
1.17
1.24
1.12
1.17
1.15
1.25
1.28
1.15
1.15
1.25
1.28
1.30
Maximum power
+25 dBm avg, 20 VDC
+33 dBm pk, <10 µs
+25 dBm avg, 5 VDC
+33 dBm pk, <10 µs
+45 dBm avg, 20 VDC
+47 dBm pk, 1 µs
+33 dBm avg, 20 VDC
+50 dBm pk, 1 µs
+33 dBm avg, 10 VDC
+50 dBm pk, 1 µs
Max SWR
(0 °C to 55 °C)
1.21
1.15
1.20
1.23
1.27
1.21
1.15
1.20
1.15
1.20
1.23
1.27
1.30
1.15
1.20
1.14
1.18
1.25
1.14
1.18
1.17
1.26
1.29
1.17
1.17
1.26
1.29
1.31
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