Agilent
U2000 Series USB Power Sensors
Data Sheet
Features
Perform power measurement
without a power meter
Frequency range from 9 kHz to 24
GHz (sensor dependent)
Dynamic range from –60 dBm to
+20 dBm
Internal zeroing capability and
external calibration-free measurements
1
Introduction
The Agilent U2000 Series USB power sensors are average, dynamic wide-range
power sensors that can be used with a PC or any selected Agilent USB-based
instrument. With internal zeroing, there is no need to disconnect the sensor or
power off the device-under-test (DUT). The U2000 Series does not require any
50 MHz reference signal calibration, thus allowing factory calibration to ensure
measurement accuracy.
All the specifi cations provided in this data sheet are valid ONLY after proper
calibration of the power sensor and apply to continuous wave (CW) signals
unless otherwise stated.
Simplifi ed measurement setup
with built-in triggering
The specifi cations are valid for a temperature range from 0 °C to +55 °C unless
otherwise stated. Specifi cations provided for a temperature of 25 °C ± 10
°C are valid for a relative humidity range of 15% to 75% and conform to the
standard environmental test conditions.
The U2000 Series USB power sensors have two independent measurement
paths (high and low power paths) as shown below:
Table 1: Low power path and high power path for Agilent U2000 Series USB power sensors
Sensor Power Range
U2000A, U2001A, U2002A, U2004A –60 dBm to +20 dBm
Low Power Path: –60 dBm to –10dBm
High Power Path: –10 dBm to +20 dBm
Table 2: Product specifi cations for Agilent U2000 Series USB power sensors
Model Frequency Range Maximum SWR (25
°C±10 °C)
U2000A 10 MHz to 18.0 GHz 10 MHz to 30 MHz: 1.15
30 MHz to 2 GHz: 1.13
2 GHz to 14 GHz: 1.19
14 GHz to 16 GHz: 1.22
16 GHz to 18 GHz: 1.26
Maximum SWR (0-55 °C) Maximum Power Connector
10 MHz to 30 MHz: 1.21
30 MHz to 2 GHz: 1.15
2 GHz to 14 GHz: 1.20
14 GHz to 16 GHz: 1.23
16 GHz to 18 GHz: 1.27
+25 dBm (320 mW) average
+33 dBm peak (2 W) <10 us
Ty pe
Type-N (m)
U2001A 10 MHz to 6.0 GHz 10 MHz to 30 MHz: 1.15
30 MHz to 2 GHz: 1.13
2 GHz to 6 GHz: 1.19
U2002A 50 MHz to 24 GHz 50 MHz to 2 GHz: 1.13
2 GHz to 14 GHz: 1.19
14 GHz to 16 GHz: 1.22
16 GHz to 18 GHz: 1.26
18 GHz to 24 GHz: 1.30
U2004A 9 kHz to 6.0 GHz 9 kHz to 2 GHz: 1.13
2 GHz to 6 GHz: 1.19
10 MHz to 30 MHz: 1.21
30 MHz to 2 GHz: 1.15
2 GHz to 6 GHz: 1.20
50 MHz to 2 GHz: 1.15
2 GHz to 14 GHz: 1.20
14 GHz to 16 GHz: 1.23
16 GHz to 18 GHz: 1.27
18 GHz to 24 GHz: 1.30
9 kHz to 2 GHz: 1.15
2 GHz to 6 GHz: 1.20
2
+25 dBm (320 mW) average
+33 dBm peak (2 W) <10 us
+25 dBm (320 mW) average
+33 dBm peak (2 W) <10 us
+25 dBm (320 mW) average
+33 dBm peak (2 W) <10 us
Type-N (m)
3.5 mm (m)
Type-N (m)
Why Zeroing Is Important For U2000 Series USB Power
Sensor?
Zeroing a power sensor is performed to reduce zero offset and noise impact to
improve RF power measurement accuracy. The U2000 Series USB power sensor
has two types of zeroing, namely the Internal Zeroing (INT) and External Zeroing
(EXT).
When performing External Zeroing, the RF signal source (typically signal output
from a device under test) should be turned off or disconnected from the power
sensor input, then the power sensor is zeroed. For Internal Zeroing, the RF signal
source can be turned on or left connected to the power sensor input. The power
sensor will isolate the RF signal source from the diode sensor before zeroing.
Users are recommended to perform external zeroing for input signals power
below -30 dBm to obtain a maximum degree of accuracy in their measurements.
External Zeroing can be used for RF signal level that falls into the power dynamic
range (from –60 dBm to 20 dBm). Figure 1 shows the External Zeroing setting in
the N1918A Power Panel.
Figure 1: Setting External Zeroing (EXT) in the N1918A Power Panel
3
Figure 2: Typical SWR chart for U2000A, 10 MHz to 18 GHz (25 °C ±10 °C)
Figure 3: Typical SWR chart for U2001A, 10 MHz to 6 GHz (25 °C ±10 °C)
4
Figure 4: Typical SWR chart for U2002A, 50 MHz to 24 GHz (25 °C ±10 °C)
Figure 5: Typical SWR chart for U2001A, 9 kHz to 6 GHz (25 °C ±10 °C)
5
Power Linearity
Table 3: Power Linearity (after zero and cal at ambient environment conditions)
Sensor Power Linearity
(25 °C±10 °C)
U2000A, U2001A,
U2002A, U2004A
–60 dBm to –10 dBm
–10 dBm to 0 dBm
0 dBm to +20 dBm
±3.0%
±3.0%
±3.0%
Linearity
(0-55 °C)
±3.5%
±3.5%
±3.5%
Power range Measurement uncertainty
–60 dBm to –35 dBm
–38 dBm to –15 dBm
–20 dBm to –9 dBm
–11 dBm to –5 dBm
–7 dBm to 15 dBm
10 dBm to 20 dBm
±1.52%
±1.52%
±1.69%
±1.69%
±1.96%
±1.61%
Figure 6: Typical U2000 Series USB power sensors Power Linearity at 25 °C,
after zero and calibration, with associated measurement uncertainty
6
Switching Point
The U2000 Series USB power sensors have two paths, a low power path covering –60 dBm to –10 dBm, and a high power path covering –10 dBm to +20 dBm.
The power meter automatically selects the appropriate power level path. To
avoid unnecessary switching when the power level comes close to the –10 dBm
point, a Switching Point Hysteresis is added. This hysteresis causes the low
power path to remain selected until approximately –9.5 dBm has been reached.
When the power level increases above –9.5 dBm, the high power path will be
selected. The high power path remains selected until approximately –10.5 dBm
has been reached. When the power level decreases below –10.5 dBm, the low
power path will be selected.
Switching point linearity: Typically <±0.5% (<±0.02 dB)
Switching point hysteresis: Typically 0.5 dB
Table 4: Zero Set, Zero Drift and Measurement Noise with the associated range
Range
1
Zero Set Zero Drift
–60 dBm to –35 dBm ±651 pW
–38 dBm to –15 dBm ±1.13 nW
–20 dBm to –9 dBm ±12.8 nW
–11 dBm to –5 dBm ±445 nW
–7 dBm to 15 dBm ±4.26 µW
10 dBm to 20 dBm ±6.84 µW
996 pW 1.91 nW
400 pW 2.24 nW
6.01 nW 40.8 nW
155 nW 1.63 µW
3.20 µW 861 nW
3.39 µW 19.5 µW
2
Measurement Noise
3
1. Condition: (i) 0 °C to 55 °C and (ii) 40 °C, 95% relative humidity.
2. Within 1 hour after zero set, at a constant temperature, after a 24 hour warm-up of the
power sensor.
3. The number of averages at 16 for Normal mode, measured over one minute interval and
two standard deviations.
7
Settling Time
Settling Time for Normal Mode and x2 Mode
Number of Averages 1 2 4 5 16 32 64 128 256 512 1, 024
Settling Time1 (s)
(Normal Mode)
0.045 0.09 0.17 0.34 0.66 1.3 2.6 5.2 10.4 20.9 41.9
Settling Time1 (s)
(x2 Mode)
Number of Averages 1 2 4 5 16 32 64 128 256 512 1, 024
Noise Multiplier (s)
(Normal Mode)
Noise Multiplier (s)
(x2 Mode)
0.042 0.05 0.09 0.17 0.34 0.66 1.0 2.6 5.2 10.4 20.9
Noise Multiplier for Normal Mode and x2 Mode
2.0 1.8 1.7 1.5 1.0 0.95 0.74 0.55 0.39 0.29 0.21
2.7 2.4 2.0 1.6 1.0 0.91 0.78 0.53 0.34 0.29 0.20
8
Calibration Factor (CF) and Refl ection Coeffi cient (Rho)
Calibration Factor (CF) and Refl ection Coeffi cient (Rho) data is provided in the
Certifi cate of Calibration (CoC) that comes with the purchase of U2000 Series
USB power sensors. This data is unique to each sensor. If you have more than
one sensor, you should match the serial number on the CoC with the serial number on the power sensor you are using. The CF corrects the frequency response
of the sensor.
The Refl ection Coeffi cient (Rho, or r) relates to the SWR based on the following
formula:
SWR = (1 + Rho)/(1 - Rho)
Maximum uncertainties of the CF data are listed in the following tables.
As the U2000 Series USB power sensors have two independent measurement
paths (high and low power paths), there are two calibration factor uncertainty
tables for each sensor. The uncertainty analysis for the calibration of the sensors
is done in accordance with the ISO Guide. The uncertainty data reported on the
calibration certifi cate is the expanded uncertainty with a 95% confi dence level
and a coverage factor of two.
Table 5: Calibration factor uncertainties for U2000A
U2000A
Frequency
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
–60 dBm to –10 dBm –10 dBm to 20 dBm
± 1.70% ± 1.69%
± 1.62% ± 1.62%
± 1.97% ± 1.96%
± 2.33% ± 2.33%
± 3.09% ± 3.08%
Uncertainty (25 °C±10 °C)
Table 6: Calibration factor uncertainties for U2001A
U2001A
Frequency
10 MHz to 30 MHz
30 MHz to 2 GHz
2 GHz to 6 GHz
–60 dBm to –10 dBm –10 dBm to 20 dBm
± 1.70% ± 1.69%
± 1.62% ± 1.62%
± 1.78% ± 1.75%
Uncertainty (25 °C±10 °C)
9
Table 7: Calibration factor uncertainties for U2002A
U2002A
Frequency
–60 dBm to –10 dBm –10 dBm to 20 dBm
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
Uncertainty (25 °C±10 °C)
± 1.98% ± 1.97%
± 2.27% ± 2.25%
± 2.34% ± 2.33%
± 2.38% ± 2.37%
± 2.73% ± 2.72%
Table 8: Calibration factor uncertainties for U2004A
U2004A
Frequency
–60 dBm to –10 dBm –10 dBm to 20 dBm
9 kHz to 10 MHz
10 MHz to 30 MHz
30 MHz to 500 MHz
500 MHz to 1.2 GHz
1.2 GHz to 6 GHz
Uncertainty (25 °C±10 °C)
± 1.75% ± 1.72%
± 1.73% ± 1.71%
± 1.73% ± 1.71%
± 1.61% ± 1.59%
± 1.69% ± 1.65%
10
General Characteristics
This instrument is designed for indoor use only. The table shows the general
requirements for U2000 Series USB power sensors.
Temperature
Relative Humidity
Altitude
Pollution
Net Weight
Dimensions
(U2000/1/4A)
Dimensions
(U2002A)
Storage Environment
Storage Temperature
0 °C to +55 °C (operating)
–30 °C to +70 °C (non-operating)
Operating up to 95% at 40 °C (non-condensing)
Non-operating up to 90% at 65 °C (non-condensing)
Operating up to 4,600 metres (15,000 feet)
Non-operating up to 4,600 metres (15,000 feet)
Degree 2
U2000/1/4A : 0.262 kg (0.6 lb)
U2002A : 0.226 kg (0.5 lb)
Length: 163.75 mm (6.4 in)
Width: 46.00 mm (1.8 in)
Height: 35.90 mm (1.4 in)
Length: 134.37 mm (5.3 in)
Width: 46.00 mm (1.8 in)
Height: 35.90 mm (1.4 in)
The sensor should be stored in a clean, dry environment
–30 °C to +70 °C
163.75 mm (U2000/1/4A)
134.37 mm (U2002A)
46 mm 35.9 mm
Figure 7: Dimensional drawing of U2000 Series
USB power sensors
11
Features
Agilent N1918A Power Analysis Manager
Enhanced visualization with
larger and more fl exible display
formats
Powerful graph functions
Display multi-channel power
measurements (with more than
10 displays on one window)
Convenient data logging and
storing up to seven days
Time-saving options to save and
restore instrument settings
Measurement limit and alert
function optimized for remote
operation
Quick and easy application
screen printing option
The Agilent N1918A Power Analysis Manager is a PC-based application
software running on Microsoft® Windows® platforms that is targeted to
extend the capabilities of U2000 Series USB power sensors. The N1918A is a
suite of software applications that comprises a basic version, which contains a
standard graphical user interface (GUI), and an advanced version as an optional
software license, which provides for advanced pulse analyses, multi-channel
power measurements, statistical analyses, and a recording function. Users can
use these software applications to track problems at any stage of their design
process, from simulation to the fi nal prototype. The software is fl exible and can
to accept data from multiple front ends.
The following section contains the specifi cations for using the Agilent N1918A
Power Analysis Manager with U2000 Series USB power sensors.
Zero and Cal:
For performing internal zeroing,
internal calibration, and external
zeroing. No external calibration
required.
Display units:
Absolute: Watts or dBm
Relative: Percent or dB
Display resolution:
Resolution of 1.0, 0.1, 0.01, and 0.001
dB in log mode, or one to four digits in
linear mode.
dBm/W:
Selectable units of either Watts or
dBm in absolute power; or percentage
of dB for relative measurements.
Duty cycle:
Duty cycle values between 0.001% to
99.999% can be entered in increments
of 0.01% to display a pulse power
representation of measured power.
The following equation is used to
calculate the display pulse power
value:
Default resolution:
0.01 dB in log mode, three digits in
linear mode.
Range:
1 kHz to 999.9 GHz, confi gurable on
the basis of a 1-kHz step scale.
Relative:
Displays all successive measurements
in relation to user-specifi c values.
Offset:
Allows power measurements to
be offset by –100 dB to +100 dB,
confi gurable in 0.001 dB increments,
to compensate for external loss or
gain.
Save and Restore Instrument
Settings:
The Power Analysis Manager offers
an option that allows users to save
the instrument settings in *.prop
format fi les. This enables users to
restore their instrument settings by
simply loading the relevant instrument
property fi les whenever the same
settings are required.
Pulse Power
= Measured Power/Duty Cycle
Limits:
High and low limits can be set in
the range between –150.00 dBm to
+230.000 dBm, in 0.001 dBm increments.
Preset default values:
Channel Offset (dB) = 0
Duty Cycle Off
Frequency 50 MHz
AUTO Average
AUTO Range
Free Run Mode
Measurement Unit dBm
Measurement speed:
• 110 readings/sec in FAST mode
• 250 readings/sec in buffered mode
of 50 readings
Current requirement:
Approximately 200 mA maximum
current for USB
12
Agilent Email Updates
t
www.agilent.com/fi nd/emailupdates
Get the latest information on the products and applications you select.
Agilent Direc
www.agilent.com/fi nd/agilentdirect
Quickly choose and use your test
equipment solutions with confi dence.
Agilent
Open
www.agilent.com/fi nd/open
Agilent Open simplifi es the process of connecting and
programming test systems to help engineers design,
validate and manufacture electronic products. Agilent
offers open connectivity for a broad range of systemready instruments, open industry software, PC-standard
I/O and global support, which are combined to more
easily integrate test system development.
Remove all doubt
Our repair and calibration services will get your
equipment back to you, performing like new,
when promised. You will get full value out of your
Agilent equipment throughout its lifetime. Your
equipment will be serviced by Agilent-trained
technicians using the latest factory calibration
procedures, automated repair diagnostics and
genuine parts. You will always have the utmost
confi dence in your measurements.
Agilent offers a wide range of additional expert
test and measurement services for your equipment, including initial start-up assistance onsite
education and training, as well as design, system
integration, and project management.
For more information on repair and
calibration services, go to
www.agilent.com/find/removealldoubt
www.agilent.com
For more information on Agilent Technologies’
products, applications or services, please contact
your local Agilent office. The complete list is
available at:
www.agilent.com/find/contactus
Phone or Fax
United States:
(tel) 800 829 4444
(fax) 800 829 4433
Canada:
(tel) 877 894 4414
(fax) 800 746 4866
China:
(tel) 800 810 0189
(fax) 800 820 2816
Europe:
(tel) 31 20 547 2111
Microsoft and Windows are registered trademarks of
Microsoft Corporation in the United States and/or other
countries.
Japan:
(tel) (81) 426 56 7832
(fax) (81) 426 56 7840
Korea:
(tel) (080) 769 0800
(fax) (080) 769 0900
Latin America:
(tel) (305) 269 7500
Taiwan:
(tel) 0800 047 866
(fax) 0800 286 331
Other Asia Pacifi c Countries:
(tel) (65) 6375 8100
(fax) (65) 6755 0042
Email: tm_ap@agilent.com
Revised: 1⅛ /06
Product specifi cations and descriptions
in this document subject to change
without notice.
© Agilent Technologies, Inc. 2007
Printed in USA, October 17, 2007
5989-6278EN
Loading...