E-Series E9320 Peak
and Average Power
Sensors
Operating and
Service Guide
General
Information contained in this document is subject to
change without notice. Agilent Technologies makes
no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpo se.
Agilent Technologies shall not be liable for errors
contained herein or for incidental or consequential
damages in connection with the furnishings,
performance, or use of this material. No part of this
document may be ph otocopi ed, repr oduce d, or
translated to another language without the prior
written consent of Agilent Technologies.
Copyright 2003 Agilent Technologies
Station Road, South Queensferry, Scotland, EH30 9TG,
UK.
Agilent Part No. E9321-90001
Printed in USA
June 2007
Legal Information
Certification
Agilent Technologies certifies that this product met its
published specifications at the time of shipment from
the factory. Agilent Technologies further certifies that
its calibration measure ments are traceable to the
United States National Inst itute of Sta ndards and
Technology, to the extent allowed by the Institute’s
calibration facility, and to the calibration facilities of
other International Standards Organization members.
2 E-Series E9320 Operating and Service Guide
Safety Symbols
Safety Symbols
The following symbols on the instrument and in the
documentation indicate precautions which must be taken to
maintain safe operation of the instrument.
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.
Safety
This guide uses warnings and cautions to denote hazards
Notices
WARNING A warning calls attention to a procedure, practice or the like,
which, if not correctly performed or adhered to, could result in
injury or loss of life. Do not proceed beyond a warning until the
indicated conditions are fully understood and met.
CAUTION A caution calls attention to a procedure, practice or the like
which, if not correctly performed or adhered to, could result in
damage to or the destruction of part or all of the equipment.
Do not proceed beyond a caution until the indicated
conditions are fully understood and met.
E-Series E9320 Operating and Service Guide 3
General Safety Information
General Safety Information
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.
WARNING 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.
Sound Emission
Herstellerbescheinigung
Diese Information steht im Zusammenhang mit den
Anforderungen der Maschinenlarminformationsverordnung
vom 18 Januar 1991.
• Sound Pressure LpA < 70 dB.
• Am Arbeitsplatz.
•Normaler Betrieb.
• Nach DIN 45635 T. 19 (Typprufung).
4 E-Series E9320 Operating and Service Guide
General Safety Information
Manufacturers Declaration
This statement is provided to comply with the requirements of
the German Sound DIN 45635 T. 19 (Typprufung).
• Sound Pressure LpA < 70 dB.
• At operator position.
•Normal operation.
• According to ISO 7779 (Type Test).
E-Series E9320 Operating and Service Guide 5
General Safety Information
6 E-Series E9320 Operating and Service Guide
Contents
Contents
Safety Symbols ........................................................................ 3
General Safety Information ..................................................... 4
Sound Emission.................................................................... 4
Contents .................................................................................. 7
Introduction...............................................................................9
General Information .............................................................. 10
Initial Inspection................................................................. 10
Power Meter and Sensor Cable Requirements....................11
Interconnections ................................................................ 11
Calibration.......................................................................... 11
The E-Series E9320 Power Sensors in Detail ........................ 13
Specifications and
Characteristics ......................................................................15
Introduction ........................................................................... 16
Specifications ....................................................................... 17
Service .......................................................................................43
General Information .............................................................. 44
Cleaning............................................................................. 44
Performance Test................................................................ 45
Replaceable Parts...............................................................47
Service .................................................................................. 51
Principles of Operation ....................................................... 51
Troubleshooting.................................................................. 54
Repair of Defective Sensor ................................................. 54
Disassembly Procedure...................................................... 55
Reassembly Procedure ....................................................... 55
E-Series E9320 Operating and Service Guide 7
Contents
8 E-Series E9320 Operating and Service Guide
1Introduction
What You’ll Find
In This Chapter
This Chapter introduces you to the E-series E9320 power
sensors. It contains the following sections:
• General Information on page 10
• Initial Inspection on page 10
• Power Meter and Sensor Cable Requirements on
page 11
• Interconnections on page 11
• The E-Series E9320 Power Sensors in Detail on page
13
General Information
General Information
Welcome to the E-series E9320 power sensors Operating and
Service Guide! This guide contains information about the
initial inspection, connection, and specifications of the Eseries E9320 power sensors. You can also find a copy of this
guide on the CD-ROM supplied with the EPM-P series peak
and average power meters.
To make best use of your sensor refer to the chapter “Using
E-Series E9320 Sensors” in the EPM-P Series Power Meters
Operating and Service Guide.
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,
notify the nearest Agilent office. Keep the damaged shipping
materials (if any) for inspection by the carrier and an Agilent
representative. If required, you can find a list of Agilent Sales
and Service offices on page 56.
10 E-Series E9320 Operating and Service Guide
General Information
Power Meter and Sensor Cable
Requirements
The E-series E9320 power sensors are compatible ONLY with
the EPM-P series power meters and with E9288 sensor
cables. (The E9288 cables are color coded to help distinguish
them from the 11730 series cables.)
Interconnections
Connect one end of an E9288 sensor cable to the E-series
E9320 power sensor and connect the other end of the cable to
the power meter’s channel input. Allow a few seconds for the
power meter to download the data contained in the power
sensor.
Ensure power sensors and cables are attached and removed
in an indoor environment.
Calibration
To carry out a zero and calibration cycle as requested by the
power meter proceed as follows:
• Ensure the E-series E9320 power sensor is disconnected
When the wait period is complete connect the E-series E9320
power sensor to the power meter’s POWER REF output.
• Press (or , / ). The wait symbol is
from any signal source. On the power meter, press
Zero
, (or / ). During zeroing
Cal
the wait symbol is displayed.
again displayed during calibration.
Zero Zero A Zero B
Cal Cal Cal A Cal B
TIP You can reduce the steps required to carry out the zero and
calibration procedure as follows:
E-Series E9320 Operating and Service Guide 11
General Information
Connect the power sensor to the POWER REF output.
• Press and . (For dual channel
Zero
Cal
meters, press , or
Zero + Cal B
Zero + Cal
Zero + Cal Zero + Cal A
as required.)
On completion, the power meter and sensor are ready to
connect to the device under test (DUT).
WARNING 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.
CAUTION The measurement connector (for connection to DUT) is
Type-N (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.
12 E-Series E9320 Operating and Service Guide
The E-Series E9320 Power Sensors in Detail
The E-Series E9320 Power
Sensors in Detail
The E-series E9320 power sensors have two frequency
ranges. The E9325A, E9326A, and E9327A have a frequency
range of 50 MHz to 18 GHz while the 50 MHz to 6 GHz range of
the E9321A, E9322A, and E9323A covers most wireless
communication applications.
The sensors have two independent measurement paths as
shown in Figure 1.
Normal
Path
Average Only Path
Chopper
Selectable Gain
Differential Amplifier*
(300 kHz, 1.5 MHz, 5 MHz)
PEAK AUTO-ZERO
Thermistor Bias
2
C Buffer
I
Gain/Mode Control
Sensor ID
2
E
PROM
CW Differential
AMP
Switched
Gain
Preamp
GAIN SELECT
SERIAL BUS
Average
Only Path
CHOP/CLOCK
CHOP/GAIN
Normal
Path
RF IN
50ohm
Sensor D iode
Bulkhead
* Bandwi dth is sens or dependent
Load Filter*
(300 kHz, 1.5 MHz
5 MHz low pass)
Figure 1 Simplified Sensor Block Diagram
Use the default normal path for continuously sampled
measurements of modulated signals and time gated
measurements. For each frequency range there is a choice of
sensors with three video (modulation) bandwidths.
E-Series E9320 Operating and Service Guide 13
The E-Series E9320 Power Sensors in Detail
• E9321A and E9325A sensors with 300 kHz bandwidth are
suitable for measuring TDMA signals such as GSM.
• E9322A and E9326A sensors with 1.5 MHz bandwidth are
suitable for measuring IS-95 CDMA signals.
• E9323A and E9327A sensors with 5 MHz bandwidth are
suitable for measuring W-CDMA signals.
Note however, that the sensors with widest bandwidth have
the smallest dynamic range (in normal mode). If dynamic
range is an important factor, use the sensor model with just
enough video bandwidth for the measurement you want to
make.
The average-only path is suitable for average power
measurements of Continuous Wave (CW) and constant
amplitude signals between -65 dBm (sensor dependent) and
+20 dBm. The average-only path can also be used to measure
true average power of any complex modulated signal below 20 dBm.
Calibration factors, linearity, temperature, and bandwidth
compensation data are stored in the sensor EEPROM during
the manufacturing process. All the compensation data is
downloaded to the EPM-P series power meter at power-on or
when the sensor is connected. You only need to enter the
frequency of the RF signal you are measuring to achieve a high
degree of accuracy.
14 E-Series E9320 Operating and Service Guide
2 Specifications and
Characteristics
What You’ll Find
In This Chapter
This Chapter describes the specifications and
characteristics of the E-series E9320 power sensors. It
contains the following sections:
• “Introduction” on page 16
• “Specifications” on page 17
Introduction
Introduction
E-series E9320 power sensors are designed for use with the
Agilent EPM series power meters. The E-series E9320 power
sensors have two measurement paths:
• Normal path: (default mode) for peak, average and
time-related measurements.
• Average-only path: is designed primarily for average
power measurements on low level signals.
These specifications are valid ONLY after zero and calibration
of the power meter and sensor.
Supplemental characteristics, which are shown in italics, are
intended to provide information useful in applying the power
sensors by giving typical, but nonwarranted performance
parameters. These characteristics are shown in italics or
denoted as “typical”, “nominal” or “approximate”.
16 E-Series E9320 Operating and Service Guide
Specifications
Specifications
Frequency, Bandwidth, and Power Range
Table 1 Frequency, Bandwidth, and Power Range
Maximum
Power Range
Video
Sensor
E9321A 300 kHz 50 MHz
E9325A 300 kHz 50 MHz
E9322A 1.5 MHz 50 MHz
E9326A 1.5 MHz 50 MHz
E9323A 5 MHz 50 MHz
E9327A 5 MHz 50 MHz
Bandwidth
* For average power measurements, Free Run acquisition mode.
Frequency
Range
to
6GHz
to
18 GHz
to
6GHz
to
18 GHz
to
6GHz
to
18 GHz
Average
only Mode
–65 dBm
to
+20 dBm
–65 dBm
to
+20 dBm
–60 dBm
to
+20 dBm
–60 dBm
to
+20 dBm
–60 dBm
to
+20 dBm
–60 dBm
to
+20 dBm
Normal
Mode*
–50 dBm
to
+20 dBm
–50 dBm
to
+20 dBm
–45 dBm
to
+20 dBm
–45 dBm
to
+20 dBm
–40 dBm
to
+20 dBm
–40 dBm
to
+20 dBm
E-Series E9320 Operating and Service Guide 17
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