Agilent
E4412A and E4413A
Power Sensor
Operating and Service
Guide
Agilent Technologies
Notices
CAUTION
WARNING
© Agilent Technologies, Inc. 1999, 2009
No p art o f this m anual may b e rep roduc ed in
any form or by any means (including electronic storage and retrieval or translation
into a foreign language) without prior agreement and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
Manual Part Number
E4412-90013
Edition
May 29, 2009
Agilent Technologies, Inc.
5301 Stevens Creek Blvd.
Santa Clara, CA 95052 USA
Warranty
The material contained in this document is provided “as is,” and is subject to being changed, without notice,
in future editions. Further, to the maximum extent permitted by applicable
law, Agilent disclaims all warranties,
either express or implied, with regard
to this manual and any information
contained herein, including but not
limited to the implied warranties of
merchantability and fitness for a particular purpose. Agilent shall not be
liable for errors or for incidental or
consequential damages in connection with the furnishing, use, or performance of this document or of any
information contained herein. Should
Agilent and the user have a separate
written agreement with warranty
terms covering the material in this
document that conflict with these
terms, the warranty terms in the separate agreement shall control.
Technology Licenses
The hardware and/or software described in
this document are furnished under a license
and may be used or copied only in accordance with the terms of such license.
Restricted Rights Legend
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the federal government include only those
rights customarily provided to end user customers. Agilent provides this customary
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Data) and 12.212 (Computer Software) and,
for the Department of Defense, DFARS
252.227-7015 (Technical Data - Commercial
Items) and DFARS 227.7202-3 (Rights in
Commercial Computer Software or Computer Software Documentation).
Safety Notices
A CAUTION notice denotes a haz-
ard. It calls attention to an operating procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly performed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated conditions are fully understood and
met.
ii
Certification
General Warranty
Agilent Technologies certifies that this product met its published
specifications at the time of shipment. Agilent further certifies that its
calibration measurements are traceable to the United States National
Institute of Standard and Technology (formerly National Bureau of
Standards), to the extent allowed by that organization’s calibration facility,
and to the calibration facilities of other International Standards
Organization members.
The material contained in this document is provided “as is,” and is subject
to being changed, without notice, in future editions. Further, to the
maximum extent permitted by applicable law, Agilent disclaims all
warranties, either express or implied with regard to this manual and any
information contained herein, including but not limited to the implied
warranties of merchantability and fitness for a particular purpose. Agilent
shall not be liable for errors or for incidental or consequential damages in
connection with the furnishing, use, or performance of this document or
any information contained herein. Should Agilent and the user have a
separate written agreement with warranty terms covering the material in
this document that conflict with these terms, the warranty terms in the
separate agreement shall control. Duration and conditions of warranty for
this product may be superseded when the product is integrated into
(becomes a part of) other Agilent products. During the warranty period,
Agilent will, at its option, either repair or replace products which prove to
be defective. The warranty period begins on the date of delivery or on the
date of installation if installed by Agilent.
Warranty Service
For warranty service or repair, this product must be returned to a service
facility designated by Agilent. For products returned to Agilent for
warranty service, the Buyer shall prepay shipping charges to Agilent and
Agilent shall pay shipping charges to return the product to the Buyer.
However, the Buyer shall pay all shipping charges, duties, and taxes for
products returned to Agilent from another country.
iii
Limitation of Warranty
Exclusive Remedies
The foregoing warranty shall not apply to defects resulting from improper
or inadequate maintenance by the Buyer, Buyer-supplied products or
interfacing, unauthorized modification or misuse, operation outside of the
environmental specifications for the product, or improper site preparation
or maintenance.
The design and implementation of any circuit on this product is the sole
responsibility of the Buyer. Agilent does not warrant the Buyer’s circuitry
or malfunctions of Agilent products that result from the Buyer’s circuitry.
In addition, Agilent does not warrant any damage that occurs as a result of
the Buyer’s circuit or any defects that result from Buyer-supplied products.
To the extent allowed by local law, Agilent makes no other warranty,
expressed or implied, whether written or oral with respect to this product
and specifically disclaims any implied warranty or condition of
merchantability, fitness for a particular purpose or satisfactory quality.
To the extent allowed by local law, the remedies provided herein are the
Buyer’s sole and exclusive remedies. Agilent shall not be liable for any
direct, indirect, special, incidental, or consequential damages (including
lost profit or data), whether based on warranty, contract, tort, or any other
legal theory.
iv
Restricted Rights Legend
The Software and Documentation have been developed entirely at private
expense. They are delivered and licensed as “commercial computer
software” as defined in DFARS 252.227-7013 (Oct 1988), DFARS
252.211-7015 (May 1991), or DFARS 252.227-7014 (Jun 1995), as a
“commercial item” as defined in FAR 2.101(a), or as “restricted computer
software” as defined in FAR 52.227-19 (Jun 1987) (or any equivalent
agency regulation or contract clause), whichever is applicable. You have
only those rights provided for such Software and Documentation by the
applicable FAR or DFARS clause or the Agilent standard software
agreement for the product involved.
Technology Licenses
The hardware and/or software described in this document are furnished
under a license and may be used or copied only in accordance with the
terms of such license.
v
Safety Summary
WARNING
CAUTION
Safety Notices
The following general safety precautions must be observed during all
phases of operation of this instrument. Failure to comply with these
precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture, and intended use of the
instrument. Agilent Technologies, Inc. assumes no liability for the
customer’s failure to comply with these requirements.
A WARNING notice denotes a hazard. It calls attention to an operating
procedure, practice, or the like that, if not correctly performed or
adhered to, could result in personal injury or loss of life. Do not proceed
beyond a WARNING notice until the indicated conditions are fully
understood and met.
A CAUTION notice denotes a hazard. It calls attention to an operating
procedure, practice, or the like that, if not correctly performed or adhered
to, could result in damage to the product or loss of important data. Do not
proceed beyond a CAUTION notice until the indicated conditions are fully
understood and met.
vi
Safety Symbols
ESD
The following symbol on the instrument and in the documentation
indicates precautions that must be taken to maintain safe operation of the
instrument.
Caution, risk of danger.
The Instruction Documentation Symbol. The product is marked with this symbol
when it is necessary for the user to refer to the instructions in the supplied documentation.
This symbol indicates that a device, or part of a device, may be susceptible to
electrostatic discharges (ESD) which can result in damage to the product.
Observe ESD precautions given on the product, or its user documentation, when
handling equipment bearing this mark.
Alternating current (AC).
Direct current (DC).
Both direct and alternating current.
Three-phase alternating current.
Earth (ground) TERMINAL.
vii
PROTECTIVE CONDUCTOR TERMINAL.
Frame or chasis TERMINAL.
Equipotentiality.
On (Supply).
Off (Supply).
Equipment protected throughout by DOUBLE INSULATION or
REINFORCED INSULATION.
Caution, risk of electric shock.
Caution, hot surface.
In position of bi-stable push control.
viii
Out position of bi-stable push control.
ix
Regulatory Markings
ISM 1- A
N10149
ICES/NMB - 001
The CE mark shows that the product complies with all the relevant European legal
Directives (if accompanied by a year, it signifies when the design was proven).
The C-tick mark is a registered trademark of the Spectrum management Agency
of Australia. This signifies compliance with the Australian EMC Framework regulations under the terms of the Radio Communications Act of 1992.
This product complies with the WEEE Directive (2002/96/EC) marking equipment. The affixed product label indicates that you must not discard this electrical/electronic product in domestic household waste.
This ISM device complies with the Canadian ICES-001,
Cet appareil ISM est conforme à la norme NMB-001 du Canada.
x
General Safety Information
WARNING
CAUTION
CAUTION
The following general safety precautions must be observed during all
phases of operation, service, and repair of this instrument. Failure to
comply with these precautions or with specific warnings elsewhere in this
manual violates safety standards of design, manufacture, and intended
use of the instrument. Agilent Technologies assumes no liability for the
customer’s failure to comply with these requirements.
BEFORE CONNECTING THE POWER SENSOR TO OTHER INSTRUMENTS
ensure that all instruments are connected to the protective (earth)
ground. Any interruption of the protective earth grounding will cause a
potential shock hazard that could result in personal injury.
• Use the device with the cables provided
• Repair or service that is not covered in this manual should only be
• This product is designed for use in Installation category II and Pollution
• This instrument has been designed and tested in accordance with IEC
• Notice for germany: Noise Declaration L
performed by qualified personnels.
Degree 2.
Publication 248, Safety Requirements for Electronic Measuring
Apparatus, and has been supplied in a safe condition. The instruction
documentation contains information and warnings which must be
followed by the user to ensure safe operation and to maintain the
instrument in a safe condition.
r
A < 70 dBm am Arbeitsplatz
(operator position) mormaler Betrieb (normal position) nach DIN 45635
T.19 (per ISO 7779).
xi
In This Guide ...
1 Operation and Service Guide This chapter contains information about
initial inspection, performance tests, specifications, operations,
troubleshooting and service of the Agilent E4412A and E4413A power
sensors.
2
Appendix
and E4413A sensors (formerly EXCP-E18A and ECP-E26A, respectively)
with a serial prefix below US3848/MYxxxxxxxx/SGxxxxxxxx.
This Appendix contains specifications that applies to E4412A
xii
Contents
Notices ii
General Warranty iii
Warranty Service iii
Limitation of Warranty iv
Exclusive Remedies iv
Technology Licenses v
Safety Summary vi
Safety Notices vi
Safety Symbols vii
Regulatory Markings x
General Safety Information xi
In This Guide ... xii
1 Operation and Service Guide
General Information 3
Performance Test 15
Replaceable Parts 17
Service 20
Warranty 3
Instruments Covered by Manual 3
Description 3
Specifications 4
Calibration Factor (CF) and Reflection Coefficient (Rho) 8
Installation 11
Interconnections 11
Recommended Calibration Interval 11
Storage and Shipment 12
Operation 12
Power Meter Calibrations 14
Operating Instructions 14
Standing Wave Ratio (SWR) and Reflection Coefficient (Rho)Performance Test 15
Principles of Operation 20
Troubleshooting 20
Repair of Defective Sensor 21
xiii
Cleaning 21
Disassembly Procedure 22
Reassembly Procedure 23
Agilent Sales and Service Offices 24
A Appendix
E4412A and E4413A Specifications (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx) A-2
E4412A Calibration Factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx) A-4
E4413A Calibration factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx) A-5
xiv
List of Figures
Figure 1 E4412A and E4413A Power Sensors (Formerly ECP-E18A and EXCP-E26A,
respectively) 2
Figure 2 Relative Mode Power Measurement Linearity with Power Meter/Sensor at
25 ºC (Typical) 7
Figure 3 N8485A power sensor with adapter 14
Figure 4 Illustrated Parts Break down 18
Figure 5 Removing Power Sensor Shell 22
xv
List of Tables
Ta b l e 1 E4412A and E4413A Specifications A-5
Ta b l e 2 E4412A Calibration Factor Uncertainty at 1 mW (0 dBm) A-9
Ta b l e 3 E4413A Calibration Factor Uncertainty at 1 mW (0 dBm) A-10
Ta b l e 4 Power Sensor SWR and Reflection Coefficient for the E4412Aa A-15
Ta b l e 5 Power Sensor SWR and Reflection Coef ficient for the E4413Aa A-16
Ta b l e 5 Power Sensor SWR and Reflection Coef ficient for the E4413Aa A-16
Ta b l e 6 Replaceable Parts A-19
Ta b l e 7 Agilent Sales and Service Offices A-24
Ta b l e A - 1 E4412A and E4413A Specifications (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx) A-2
Ta b l e A - 2 E4412A Calibration Factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes
Below US3848/MYxxxxxxxx/SGxxxxxxxx) A-4
Ta b l e A - 3 E4413A Calibration factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes
Below US3848/MYxxxxxxxx/SGxxxxxxxx) A-5
xvi
Agilent E4412A and E4413A Power Sensors
Operating and Service Guide
1
Operation and Service Guide
General Information 3
Performance Test 15
Replaceable Parts 17
Service 20
This chapter contains information about initial inspection, performance tests,
specifications, operations, troubleshooting and service of the Agilent E4412A and E4413A
power sensors.
Agilent Technologies
1
1Introduction
Figure 1 E4412A and E4413A Power Sensors (Formerly ECP-E18A and EXCP-E26A,
respectively)
2 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
General Information
Warranty
The power sensors are warranted and certified as indicated on the inside
cover of this manual.
Instruments Covered by Manual
These instruments have a two- part serial number: the prefix (two letters and
the first four numbers), and the suffix (the last four numbers). The two letters
identify the country in which the unit was manufactured. The four numbers
of the prefix are a code identifying the date of the last major design change
incorporated in your Agilent Technologies product. The four- digit suffix is a
sequential number and, coupled with the prefix, provides a unique
identification for each unit produced. The contents of this manual apply
directly to all serial numbers unless otherwise indicated.
Introduction 1
Description
The E4412A and E4413A power sensors are diode power sensors. They are
intended for measurement of CW microwave power levels in a wide
dynamic range from - 70 dBm to +20 dBm (100 pW to 100 mW). The
E4412A measures at frequencies from 10 MHz to 18.0 GHz. The E4413A
measures at frequencies from 50 MHz to 26.5 GHz. These are high- speed
power sensors, and do not incorporate narrow- bandwidth averaging used in
average- power sensors. Signals with digital, pulse, or other forms of
amplitude modulation may introduce measurement errors. Multi- tone signals
(containing multiple frequency components), or signals with significant
harmonic content (> - 45 dBc) may introduce measurement errors at high
power levels. (Specifications for the power sensors are in Table 1).
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 3
1Introduction
NOTE
NOTE
Specifications
These power sensors measure CW power, displayed on a compatible power
meter in logarithmic (dBm or dB) or linear (Watts or %) measurement units.
The E4413A is shipped with a 3.5- mm to Type- N adapter, part number
08485- 60005.
The E4412A and E4413A power sensors are compatible ONLY with the newer E44XX-Series
power meters. They are NOT compatible with the earlier 430-Series, E1416A, or 70100A
power meters.
The E4412A and E4413A power sensors are extremely static- sensitive. Do not open the
power sensor unless you and the power sensor are at a static-free workstation.
The specifications listed in Table 1 are the performance standards or limits
against which the power sensor may be tested. These specifications are valid
ONLY after proper calibration of the power meter. Refer to the Calibration
Procedure Using Agilent E- Series Power Sensors in the E4418A or the
Agilent E4419A Power Meter User’s Guide.
4 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Ta b le 1 E4412A and E4413A Specifications
Rho
0.099
0.070
0.078
0.091
0.119
20.08
23.13
22.12
20.82
18.42
0.095
0.087
0.095
0.115
20.45
21.23
20.45
18.79
Limit Comments
Frequency Range E4412A: 10 MHz to 18 GHz
E4413A: 50 MHz to 26.5 GHz
Power Range –70 dBm to +20 dBm (100 pW to
100 mW)
Impedance 50 ohm nominal
Connector Type E4412A: Type-N (male)
E4413A: 3.5 mm (male)
Introduction 1
Maximum Standing Wave Ratio
(SWR) and Reflection Coefficient
b
(Rho)
E4412A
10 MHz to <30 MHz
30 MHz to <2 GHz
2 GHz to <6 GHz
6 GHz to <11 GHz
11 GHz to <18 GHz
E4413A
50 MHz to <100 MHz
100 MHz to <8 GHz
8 GHz to <18 GHz
18 GHz to 26.5 GHz
Maximum Power 200 mW peak (+23 dBm)
AC Coupled Input max: 20 VDC
Zero Set ±50 pW
SWR Return Loss (dB)
1.22
1.15
1.17
1.20
1.27
1.21
1.19
1.21
1.26
200 mW average (+23 dBm)
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 5
1Introduction
0 to 55°C
±7%
±10%
–70 dBm to +10 dBm
+10 dBm to +20 dBm
Limit Comments
Power Linearity
100 pW to 10 mW
10 mW to 100 mW
Operating Temperature 0 to 55°C
Net Weight
E4412A
E4413A
Dimensions
E4412A
E4413A
a. Limits are in percent of power in Watts. See Figure 2 for relative power measurement.
b. Specifications apply to instruments with serial prefix US3848/MYxxxxxxxx/SGxxxxxxxx and
above. For earlier instruments, refer to Appendix A.
ab
25 ± 5°C
±3%
±4.5%
0.47 kg (1.04 lb)
0.45 kg (1.00 lb)
Length: 130 mm (5.1 in)
Length: 102 mm (4.0 in)
Width: 38 mm (1.5 in)
Height: 30 mm (1.2 in)
(After calibration at 0
dBm at ambient
temperature)
Same for both models
Same for both models
6 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Introduction 1
±6 %
±3 %
±1 %
+20
+10
+6
0
–20
–35
–70
–35
–70
–20
–25 +20
0
A
B
Power L evel Being M easured (dB m)
Power Level Used as Reference (dBm)
Figure 2 Relative Mode Power Measurement Linearity with Power Meter/Sensor at
25 ºC (Typical)
The chart in Figure 2 shows the typical uncertainty in making relative power
measurements with the E44XX- Series power meter in the Rel (relative) mode.
In a relative measurement, two power levels are compared using a single
sensor. The typical measurement uncertainty can be found by drawing a
vertical line at a power level used as a reference, and a horizontal line at the
power being measured. The region where these two lines intersect shows the
typical uncertainty. This assumes that the reference power and the measured
power are at the same frequency, and neglects errors due to zero set, zero
drift, and noise. It also assumes no change in mismatch when measuring the
“Power level used as reference” and the “Power level being measured”. This
chart illustrates that the best relative power measurement accuracy is
obtained when the reference and the measured power levels are equal to, or
less than, –20 dBm. Care in choosing the power levels cna yield improved
measurement accuracy. Example A illustrates a relative gain (amplifier
measurement) and example B illustrates a relative loss (insertion loss
measurement).
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 7
1Introduction
Calibration Factor (CF) and Reflection Coefficient (Rho)
EXAMPLE A (Amplifier Gain Measurement):
Input power (reference) = –35 dBm; power measured = +6 dBm’ so the relative
gain is +41 dB. the chart indicates a typical error of ±6 %, which corresponds
to +0.25 dB/–0.27 dB uncertainty in the gain measurement.
EXAMPLE B (Insertion Loss Measurement):
Reference power = –25 dBm; power measured = –35 dBm, for the case of an
insertion loss of 10 dB. the chart indicates a typical error of ±1 %, which
corresponds to ±0.04 dBm uncertainty in the measurement.
Calibration factor and reflection coefficient data are given at 1 GHz
increments on a data sheet included with the power sensor. This data is
unique to each sensor. If you have more than one sensor, match the serial
number on the data sheet with the serial number on the power sensor you are
using. The CF corrects for the frequency response of the sensor. The power
meter automatically reads the CF data stored in the sensor and uses it to make
the corrections.
Reflection Coefficie
form ula:
SWR = (1+
Typical uncertainties of the CF data are listed in Table 2 for the E4412A
power sensor, and in Table 3 for the E4413A power sensor. The uncertainty
analysis for the calibration of the sensors was done in accordance with the
ISO/TAG4 Guide. The uncertainty data reported on the calibration certificate
is the expanded uncertainty with 95% confidence level and a coverage factor of
2.
Additionally, at frequencies other than the reference frequency, for measure-
ments above 0 dBm include 0.5 %/dB high power calibration factor uncer-
tainty.
8 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
nt (Rho, or
r
)/(1-r)
r
) relates to SWR according to the following
Ta b le 2 E4412A Calibration Factor Uncertainty at 1 mW (0 dBm)
Introduction 1
Frequency Uncertainty (%)
10 MHz 1.8
30 MHz 1.8
50 MHz Reference
100 MHz 1.8
1.0 GHz 1.8
2.0 GHz 2.4
4.0 GHz 2.4
6.0 GHz 2.4
8.0 GHz 2.4
10.0 GHz 2.4
11.0 GHz 2.4
12.0 GHz 2.4
14.0 GHz 2.4
16.0 GHz 2.6
18.0 GHz 2.6
a
a. Specifications apply to instruments with serial prefix US3848/MYxxxxxxxx/SGxxxxxxxx and
above. For earlier instruments, refer to Appendix A.
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 9
1Introduction
Ta b le 3 E4413A Calibration Factor Uncertainty at 1 mW (0 dBm)
Frequency Uncertainty (%)
50 MHz Reference
100 MHz 1.8
1.0 GHz 1.8
2.0 GHz 2.4
4.0 GHz 2.4
6.0 GHz 2.4
8.0 GHz 2.4
10.0 GHz 2.6
11.0 GHz 2.6
12.0 GHz 2.8
14.0 GHz 2.8
16.0 GHz 2.8
17.0 GHz 2.8
18.0 GHz 2.8
19.0 GHz 3.0
a
20.0 GHz 3.0
22.0 GHz 3.0
24.0 GHz 3.0
26.0 GHz 3.0
26.5GHz 3.0
a. Specifications apply to instruments with serial prefix US3848/MYxxxxxxxx/SGxxxxxxxx and
above. For earlier instruments, refer to Appendix A.
10 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Introduction 1
Installation
Initial Inspection
Inspect the shipping container for damage. If the shipping container or
packaging material is damaged, it should be kept until the contents of the
shipment have been checked mechanically and electrically. If there is
mechanical damage or if the instrument does not pass the performance tests,
notify the nearest Agilent Technologies office. Keep the damaged shipping
materials (if any) for inspection by the carrier and a Agilent Technologies
representative.
Interconnections
Connect one end of the 11730A sensor cable to the E4412A or E4413A power
sensor and co nnect the other end of the cable to the power meter’s channel
input. Allow a few seconds for the power meter to download the power
sensor’s calibration table before making a measurement.
Measurement connector (connects to DUT)
E4412A: T ype- N (male)
E4413A: 3.5- mm (male)
A torque wrench should be used to tighten these connectors. Use a 3/4- inch
open- end wrench and torque to 12 in- lb (135 Ncm) for the Type- N connector
Use a 20- mm open- end wrench and torque to 8 in- lb (90 Ncm) for the 3.5- mm
connector.
Recommended Calibration Interval
Agilent Technologies recommends a one- year calibration cycle for the E4412A
and E4413A power sensors.
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 11
1Introduction
Storage and Shipment
Environment
The instruments should be stored in a clean, dry environment. The following
limitations apply to both storage and shipment:
Temperature –55 to +75 ºC
Relative Humidity <95 % at 40 ºC
Altitude <15,240 metres (50,000 feet)
Original Packaging
Containers and materials identical to those used in factory packaging are
available through Agilent Technologies offices. If the instrument is being
returned to Agilent Technologies for servicing, attach a tag indicating the type
of service required, return address, model number, and serial number.
Also, mark the container FRAGILE to assure careful handling. In any
orrespondence, refer to the instrument by model number and serial number.
Operation
Operating Environment
The operating environment for the power sensor should be within the
following limits:
Temperature 0 to 55 ºC
Relative Humidity <95 %
Altitude <4,530 metres (15,000 feet)
12 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Introduction 1
WARNING
Operation Precautions
BEFORE CONNECTING THE POWER SENSOR TO OTHER INSTRUMENTS, ensure that
all instruments are connected to the protective (earth) ground. Any interruption of
the protective earth grounding will cause a potential shock hazard that could result
in personal injury and cause damage to the power sensor.
If the following energy and power levels are exceeded, the power meter system
may be damaged.
a Maximum Average Power: 200 mW (+23 dBm)
b Maximum Peak Power: 200 mW (+23 dBm)
Maximum torque at the connector should not exceed 12 in- lb (135 Ncm) for
the Type- N connector, or 8 in- lb (90 Ncm) for the 3.5- mm connector to avoid
damage to the connector.
Connect the power sensor by turning only the hex nut portion of the
connector. Damage can occur if torque is applied to the power sensor body.
The connector plastic insulator bead deteriorates when contacted by acetone,
trichloroethylene, carbon tetrachloride, benzene, etc. Refer to Application
Note 326, Principals of Microwave Connector Care (5954- 1566) or Microwave
Connector Care (08510- 90064) for proper cleaning methods.
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 13
1Introduction
NOTE
Power Meter Calibrations
Follow the calibration procedures given in your power meter manual. The
E4413A power sensor is fitted with 3.5 mm (m) connectors as standard. To
convert the 3.5 mm (m) connector for calibration, an adapter (3.5 mm (f) to
Type- N (m)) is included with the power sensor. See Figure 3.
Figure 3
The 3.5 mm to Type-N adapter is intended for the use of 1 mW, 50 MHz power reference of
the power meter only. Its function as a calibration reference may be compromised if it is
used for other purpose.
E4413A power sensor with adapter
Operating Instructions
The E4412A and E4413A power sensors are compatible ONLY with the newer
E44XX- Series power meters. They are NOT compatible with the earlier
430- Series, E1416A, or 70100A power meters. To operate the power sensor,
refer to the operating instructions in the Agilent E44XX- Series Power Meter
User’s Guide.
14 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Performance Test
Standing Wave Ratio (SWR) and Reflection Coefficient (Rho)Performance Test
This section does not establish preset SWR test procedures since there are
several test methods and different equipm ent available for testing the SWR or
reflection coefficient. Therefore, the actual accuracy of the test equipment
must be accounted for when measuring against instrument specifications to
determine a pass or fail condition. The test system used must not exceed the
system Rho uncertainties shown in Table 4 when testing the E4412A, or in
Table 5 when testing the E4413A
Introduction 1
Ta b le 4 Power Sensor SWR and Reflection Coefficient for the E4412A
Frequency System Rho
Uncertainty
10 MHz to < 30 MHz ± 0.010 0.099
30 MHz to < 2 GHz ± 0.010 0.070
2 GHz to < 6 MHz ± 0.010 0.078
6 GHz to < 11 GHz ± 0.010 0.091
11 GHz to 18 GHZ ± 0.010 0.119
a.Specifications apply to instruments with serial prefix US3848/MYxxxxxxxx/SGxxxxxxxx and
above. For earlier instruments, refer to Appendix A.
Actual
Measurement
a
Maximum Rho
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 15
1Introduction
Ta b le 5 Power Sensor SWR and Reflection Coef ficient for the E4413A
Frequency System Rho
Uncertainty
50 MHz to < 100 MHz ± 0.010 0.095
100 MHz to < 8GHz ± 0.010 0.087
8 GHz to < 18MHz ± 0.010 0.095
18 GHz to < 26.5 GHz ± 0.015 0.115
a.Specifications apply to instruments with serial prefix US3848/MYxxxxxxxx/SGxxxxxxxx and
above. For earlier instruments, refer to Appendix A
Actual
Measurement
a
Maximum Rho
16 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Replaceable Parts
NOTE
Table 6 is a list of replaceable parts. Figure 4 is the illustrated parts
breakdown (IPB) that identifies all of the replaceable parts. To order a part,
quote the Agilent Technologies part number, specify the quantity required,
and address the order to the nearest Agilent Technologies office.
Within the USA, it is better to order directly from the Agilent Parts Center in Roseville,
California. Ask your nearest Agilent office for information and forms for the “Direct Mail
Order System.” Also your nearest Agilent office can supply toll free telephone numbers for
ordering parts and supplies.
Introduction 1
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 17
1Introduction
Figure 4 Illustrated Parts Break down
18 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Ta b le 6 Replaceable Parts
Introduction 1
Reference
Part Number Qty Description
Designation
A1/A2 E4412A E4412-60006 1 SENSOR MODULE (E4412A)
A1/A2 E4412A E4412-69006 1 RESTORED SENSOR MODULE (E4412A)
A1/A2 E4413A E4413-60003 1 SENSOR MODULE (E4413A)
A1/A2 E4413A E4413-69003 1 RESTORED SENSOR MODULE (E4413A)
08485-60005 1 ADAPTOR, 3.5-mm to Type-N
CHASSIS PARTS
MP1 5041-9160 1 SHELL PLASTIC
MP2 5041-9160 1 SHELL PLASTIC
MP3 08481-20011 1 CHASSIS
MP4 08481-20011 1 CHASSIS
MP8 08481-00002 1 SHIELD
MP9 08481-00002 1 SHIELD
MP26 E4412-80002 1 LABEL, ID E4412A
MP26 E4413-80002 1 LABEL, ID E4413A
MP27 7121-7389 1 LABEL, POWER SENSOR
MP30 7121-7388 1 LABEL, CAL/ESD
MP31 00346-80011 1 LABEL, CAUTION
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 19
1Introduction
Service
Principles of Operation
Service instructions consist of principles of operation, troubleshooting, and
repairs.
The A1 Bulkhead assembly provides a 50 ohm load to the RF signal applied to
the power sensor. A diode assembly in the bulkhead rectifies the applied RF to
produce a dc voltage which varies with the RF power across the 50 ohm load.
Thus the voltage varies with the RF power dissipated in the load. With
maximum specified RF power (100 mW) the dc voltage is approximately 1V.
The low- level dc voltage from the bulkhead assembly must be amplified before
it can be transferred on standard cables to the power meter. The amplification
is provided by an input amplifier assembly which consists of a chopper
(sampling gate) and an input amplifier. The chopper circuit converts the dc
voltage to an ac voltage. To do this, the chopper uses two field effect
transistors (FETs), A2Q1 and A2Q2, controlled by a 440 Hz square wave
generated by the power meter. The amplitude of the sampling gate output
(drain of A2Q1, sou rce of A2Q2) is a 44 0 H z square wave which varies with the
RF power input. The 440 Hz ac output is applied to the input amplifier A2Q3
which provides the input to the first amplifier stage in the power meter.
The E44XX- Series power meter automatically detects when an E44XX Series
power sensor is connected and downloads the correction data from the
sensor’s EEPROM. This configures the power meter to operate over the +20
dBm to - 70 dBm power range with that particular sensor’s unique
correction
data applied.
Troubleshooting
Troubleshooting information is intended to first isolate the power sensor, the
cable, or the power meter as the defective component. When the power sensor
is isolated, a “Restored Sensor Module” must be used for repair. See Table 6.
20 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Introduction 1
CAUTION
CAUTION
CAUTION
If error message 241 or 310 is indicated on the power meter, suspect
failed
when making a measurement, try replacing the cable from the power meter to
the power sensor. If the problem still exists, try using a different power sensor
to determine if the problem is in the power meter or in the power sensor.
Electrostatic discharge will render the power sensor inoperative. Do not, under any
circumstances, open the power sensor unless you and the power sensor are in a static
free environment.
power sensor. If no error message is displayed, but a problem occurs
Repair of Defective Sensor
There are no serviceable parts inside the E44XX- Series sensors. If the sensor
is defective, replace the entire “module” with the appropriate “Restored
sensor Module.” See Table 6.
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 21
Cleaning
Cleaning Solutions
Keeping in mind its flammable nature; a solution of pure isopropyl or ethyl
alcohol can be used to clean the connector.
Connector Cleaning
The RF connector beads deteriorate when contacted by hydrocarbon compounds such
as acetone, trichloroethylene, carbon tetrachloride, and benzene.
Clean the connector only at a static free workstation. Electrostatic discharge to the
center pin of the connector will render the power sensor inoperative.
1Introduction
CAUTION
Disassembly Procedure
Clean the connector face using a cotton swab dipped in isopropyl alcohol. If
the swab is too big use a round wooden toothpick wrapped in a lint free cotton
cloth dipped in isopropyl alcohol. Refer to Agilent Application Note 326,
Principals of Microwave Connector Care (5954- 1566) or Microwave Connector
Care (08510- 90064) for proper cleaning methods.
22 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Figure 5 Removing Power Sensor Shell
Diassemble the power sensor only in a static free workstation. Electrostatic discharge
will render the power sensor inoperative.
Disassemble the power sensor by performing the following steps:
1 At the rear of the power sensor, insert the blade of a screwdriver between
the plastic shells (Figure 5). To prevent damage to the plastic shells use a
screwdriver blade as wide as the slot between the two shells.
2 Pry alternately at both sides of the connector J1 until the plastic shells are
apart.Remove the shells and the magnetic shields.
Introduction 1
Reassembly Procedure
1 Replace the magnetic shields and the plastic shells as shown in Figure 5.
Snap the plastic shells together.
Agilent E4412A and E4413A Power Sensors Operating and Service Guide 23
1Introduction
Agilent Sales and Service Offices
Ta b le 7 Agilent Sales and Service Offices
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
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
Ta i w a n :
(tel) 0800 047 866 (fax) 0800 286 331
Other Asia Pacific Countries:
(tel) (65) 6375 8100 (fax) (65) 6755 004
or visit Agilent worlwide Web at: www.agilent.com/find/assist
24 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Agilent E4412A and E4413A Power Sensors
Operating and Service Guide
A
Appendix
E4412A and E4413A Specifications (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx) 2
E4412A Calibration Factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes
Below US3848/MYxxxxxxxx/SGxxxxxxxx) 4
E4413A Calibration factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes
Below US3848/MYxxxxxxxx/SGxxxxxxxx) 5
The following specifications apply to E4412A and E4413A sensors (formerly EXCP-E18A
and ECP-E26A, respectively) with a serial prefix below US3848/MYxxxxxxxx/SGxxxxxxxx.
Agilent Technologies
A-1
AAppendix
Rho
0.145
0.100
0.120
16.8
20.0
18.4
0.110
0.095
0.115
19.2
20.5
18.8
0 to 55°C
±8%
±11%
–70 dBm to +10 dBm
+10 dBm to +20 dBm
Ta b le A -1 E4412A and E4413A Specifications (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx)
Limit Comments
Frequency Range E4412A: 10 MHz to 18 GHz
E4413A: 50 MHz to 26.5 GHz
Power Range –70 dBm to +20 dBm (100 pW to
100 mW)
Impedance 50 ohm nominal
Connector Type E4412A: Type-N (male)
E4413A: 3.5 mm (male)
Maximum Standing Wave Ratio
(SWR) and Reflection Coefficient
(Rho)
E4412A
10 MHz to <30 MHz
30 MHz to <10 GHz
10 GHz to <18 GHz
E4413A
50 MHz to <2 GHz
2 GHz to <18 GHz
18 GHz to <26.5 GHz
Maximum Power 200 mW peak (+23 dBm)
Zero Set ±50 pW
Power Linearity
100 pW to 10 mW
10 mW to 100 mW
a
SWR Return Loss (dB)
1.34
1.22
1.27
1.25
1.21
1.26
200 mW average (+23 dBm)
25 ± 5°C
±4%
±5.5%
(After calibration at 0
dBm at ambient
temperature)
A-2 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Appendix A
Limit Comments
Operating Temperature 0 to 55°C
Net Weight
E4412A
E4413A
Dimensions
E4412A
E4413A
a. Limits are in percent of power in Watts. See Figure 2 for relative power measurement.
0.47 kg (1.04 lb)
0.45 kg (1.00 lb)
Length: 130 mm (5.1 in)
Length: 102 mm (4.0 in)
Width: 38 mm (1.5 in)
Height: 30 mm (1.2 in)
Same for both models
Same for both models
Agilent E4412A and E4413A Power Sensors Operating and Service Guide A-3
AAppendix
Ta b le A -2 E4412A Calibration Factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx)
Frequency Uncertainty
(%)
10 MHz 2.7
30 MHz 2.7
50 MHz Reference
100 MHz 2.7
1.0 GHz 2.7
2.0 GHz 3.1
4.0 GHz 3.1
6.0 GHz 3.1
8.0 GHz 3.1
10.0 GHz 3.1
11.0 GHz 3.1
12.0 GHz 3.3
14.0 GHz 3.3
16.0 GHz 3.3
18.0 GHz 3.3
A-4 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
Appendix A
Ta b le A -3 E4413A Calibration factor Uncertainty at 1 mW (0 dBm) (Serial Prefixes Below
US3848/MYxxxxxxxx/SGxxxxxxxx)
Frequency Uncertainty
(%)
50 MHz Reference
100 MHz 2.7
1.0 GHz 2.7
2.0 GHz 3.1
4.0 GHz 3.1
6.0 GHz 3.1
8.0 GHz 3.1
10.0 GHz 3.1
12.0 GHz 3.3
14.0 GHz 3.3
16.0 GHz 3.3
17.0 GHz 3.3
18.0 GHz 3.5
20.0 GHz 3.5
22.0 GHz 3.5
24.0 GHz 3.5
26.0 GHz 3.5
26.5 GHz 3.5
Agilent E4412A and E4413A Power Sensors Operating and Service Guide A-5
AAppendix
A-6 Agilent E4412A and E4413A Power Sensors Operating and Service Guide
www.agilent.com
Contact us
T
o obtain service, warranty or technical support
assistance, contact us at the
following phone numbers:
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
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
Ta i w a n :
(tel) 0800 047 866 (fax) 0800 286 331
Other Asia Pacific Countries:
(tel) (65) 6375 8100 (fax) (65) 6755 0042
Or visit Agilent worlwide web at:
www.agilent.com/find/assist
Product specifications and descriptions in this
document subject to change without notice.
© Agilent Technologies, Inc. 1999, 2008,
2009
Printed in Malaysia
May 29, 2009
E4412-90013
Agilent Technologies
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