Agilent Technologies | 437B | Agilent EPM Series Power Meters

Agilent EPM Series
Power Meters
The standard just got better!
What’s new?
• Fast measurement speeds (up to 200 readings per second)
• Wide dynamic range sensors (-70 dBm to +44 dBm), sensor
• Calibration factors stored in EEPROM
• Rechargeable battery option
Agilent Technologies power meters have long been recognized as the industry standard for RF and microwave power
measurements. Now, with our latest generation of power
meters and sensors, Agilent provides totally updated and
exciting choices.
E4418B single-channel power meter
The EPM series of power meters is comprised of:
• E4418B single-channel power meter
• E4419B dual-channel power meter
and the E-series of power sensors (see table at left).
The E-series power sensors are characterized by having
their calibration factors, linearity, and temperature compensation data all stored in EEPROM and have a wide
dynamic range. This series of power sensors only operate
with the EPM power meters. For more information on
the E9300 power sensors, refer to the Product Overview,
E4419B dual-channel power meter
Agilent protects your investment
E4412A power sensor and E4413A power sensor.
E-Series Power Sensors, CW Family
Frequency Range
10 MHz to 18 GHz
50 MHz to 26.5 GHz
Power Range
-70 to +20 dBm
-70 to +20 dBm
E-Series Power Sensors, Average Power Family
Frequency Range
10 MHz to 18 GHz
10 MHz to 6 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
Power Range
-60 to +20 dBm
-60 to +20 dBm
-60 to +20 dBm
-30 to +44 dBm
-30 to +44 dBm
-50 to +30 dBm
-50 to +30 dBm
Operates with 8480 series power sensors!
Because Agilent understands the need to protect your
investment in power sensors, the EPM series power
meters have been designed to be fully compatible with the
8480 series power sensors.
Works with 436A, 437B, and 438A code1!
The development of automatic test procedures, software
generation, and verification are expensive tasks. To help protect your investment, we’ve designed the new E4418B power
meter to be code-compatible with the 436A and 437B, and the
E4419B to be code-compatible with the 438A. It’s therefore a
quick and simple task to make many power measurements in an
automatic test equipment (ATE) system using existing 436A,
437B and 438A code. This is achieved by softkey selection.
The Agilent EPM series provides a high degree of compatibility with
436A/437B/438A code. However, backwards compatibility can never be
100% guaranteed. For an application note on EPM series compatibility, visit
our Web site at or ask your sales representative for literature
number 5968-4519E.
Designed for Manufacturing
Fast speed means increased productivity
Fast measurement speed is essential in the high
volume manufacturing of RF and microwave components and systems. Faster test time improves your
productivity—letting you test more devices in less
time. E-series sensors along with the E4418B
power meter provide a FAST measurement mode
that lets you make up to 200 readings per second.
There’s also a x2 mode with the EPM series
power meters and 8480 series sensor combination—doubling your speed compared to the
437B and 8480 series combination.
No more slow range switch delays!
A common problem with most power meters
is the time delay that occurs when the power
being measured crosses a range switch point.
Range switching delays are either significantly
reduced or eliminated when an EPM series
power meter is used with an E-series sensor.
This power measurement combination has
only one fast range switch point across the
entire dynamic range of the sensor.
... yet more useful functions ...
SCPI compatible - EPM power meters conform to the
Standard Commands for Programmable Instruments
RS232/422 interface - both RS232 and RS422 serial
interfaces can be used to remotely control the EPM
series power meters.
Limit testing - EPM series power meters can be
configured to verify the power being measured
against an upper and / or lower limit. Limit failures
are indicated on the power meter’s display and over
the GPIB.
Zero/Cal lockout - can be enabled to prevent the
EPM series power meter from making measurements until the connected sensor is zeroed and
Channel offset - EPM series power meters can
be configured to compensate for signal loss or
gain in your test setup.
Height and width compatibility allows
easy replacement in rackmount systems
The EPM series power meters are the same
height and width as the 437B and 438A—
making them easy to substitute in rackmount
systems. The following options are available2:
Option 002 - rear panel sensor input(s) with
the Power Reference Calibrator
on the front panel.
Option 003 - rear panel sensor input(s) with
the Power Reference Calibrator
on the rear panel.
Option 908 - rackmount kit for one instrument.
Option 909 - rackmount kit for two instruments.
These options are available for an extra cost.
Rigorous environmental testing and high-reliability qualifies the
EPM power meters for your most demanding measurement applications.
Large LCD Display
High resolution display
with back lighting provides a wide viewing
angle for all the displayed data.
Returns the power meter to local
control. If already in local, returns
the power meter to the default
Allow positioning of the
cursor for editing purposes and
for character selection.
Provide user menu
Power Ref
1.00 mW, 50 MHz source used
for power sensor calibration
(traceable to NIST).
Display keys
Select the active display window.
Selectable single and
split screen
Accesses the menus associated
with the general power meter
setup (for example, the GPIB
address, sensor cal tables). Also
accesses input offsets, averages,
and other input data.
Save and recall up to
10 instrument states.
Meas Setup
Accesses the menus associated
with the Measurement Setup (for
example, selection of the digital
or analog meter). Also accesses
ratio measurements on the dualchannel power meter.
Frequency/Cal Fac
Frequency: Direct
entry of the test signal
Cal Factor: For sensor frequency response
correction (settable
from 1% to 200% with
0.1% resolution).
Selectable units of
either Watts or dBm
in absolute power, or
percent, or dB for relative measurements.
Rel: Relative mode
uses displayed value as
reference (when active).
Offset: Display offset
values from -99.99 dB
to +99.99 dB can be
set up.
Zero: Fully automatic
digital zero corrects
for residual offsets.
Cal: Fully automatic
sensor calibration.
Sensor Connector(s)
Sensor input operates with
Agilent 8480 series and E-series
power sensors. This is the
E4418B single-channel power
meter. The E4419B has A and B
channel inputs.
Easy to learn ... easy to use
Increase your productivity with an easy-to-learn, easy-to-use power meter.
The EPM series has been designed with the user in mind. Hardkeys such as
ZERO/CAL allow access to the most frequently used power meter functions.
Softkeys provide measurement control through user selection. The high resolution LCD display (with backlighting), large characters, and split screens provide
easy viewing of information.
Rear panel features
• DC Recorder Output, 0 to 1 Volt. The Agilent E4419B has two DC
Recorder Outputs.
•Option 002 provides rear panel sensor inputs with the power reference
oscillator on the front panel.
•Option 003 provides parallel rear panel sensor inputs and moves the
power reference oscillator to the rear panel.
•GPIB connector for remote control of all functions.
•RS232/422 connector for remote control.
•Line power - universal input voltage range with NO range selection switches.
•Ground connector - for those applications where you need a hard-wired connection between the power meter’s ground and a common ground.
•Power meter conforms to CE and CSA standards.
•Remote input / output - TTL logic level is output when a measurement exceeds a
predetermined limit. TTL inputs are provided to initiate zero and calibration cycles.
Designed for Installation and
Wide dynamic range allows high and low power
measurements with a single sensor
One E-series CW sensor covers the range -70 to +20
dBm, while the E9300 sensors operate from -60 to +44
dBm (25W), depending on the sensor. This wide
dynamic range capability saves you time and money
as you can measure both high (transmitter monitor
points) and low (receiver) power levels using a single sensor. Often using just one sensor reduces the
requirement for multiple sensor reconnections
and the associated mandatory zero and calibration procedures.
Stored sensor calibration factors for best
accuracy and ease of use
Now you no longer have to key in the sensor
calibration factors to achieve optimum measurement accuracy. The E-series sensor calibration
factors (computed at our factory or Agilent
Technologies Service Center) are programmed
into measurement points across the frequency
range of the sensor and stored in EEPROM.
At power-on, or when the sensor is connected,
the calibration factors are automatically downloaded into the EPM series power meter. This
eliminates measurement errors caused by
wrongly keyed-in calibration factor data.
Not all installation and maintenance environments are temperature controlled. Therefore, it
is important to have confidence in your power
measurements over a wide temperature range. Eseries sensors provide temperature correction
information. This ensures that the best power
measurement accuracy is maintained over the full
0 to 55˚ C temperature range.
Rugged and portable makes it ideal for field use
The optional rechargeable battery (option 001), which
provides up to 5.5 hours of continuous operation,
means you can use the EPM series power meters in a
mains-free environment. The battery charges in less
than three hours, during which time the meter can
be used, and the charge level indicators keep you
informed of the battery status at all times. The
34397A 12Vdc to 115Vac inverter enables you to
operate the EPM series power meters from an
external 12V battery. The soft carry / operating
case (34141A) makes it easy to use the EPM
series power meter in installation and maintenance environments. Front and rear-panel
bumpers protect the power meter from everyday knocks. A bail handle makes it easy to
carry. The EPM series power meters are lightweight—weighing approximately 4kg (9 lb).
The accessories available for the EPM series power meters
are ideal for installation and maintenance situations.
The battery option and operating
case bring Agilent’s power accuracy
and ease-of-use to field applications.
Versatile display is suitable for your measurement
In the installation and maintenance environment, it is
important to be able to see the power meter’s display
from a distance and in a variety of lighting conditions. The EPM series power meter has been
designed to meet this need. Contrast adjustment
lets you set the brightness of the display.
With the internal battery option 0013 installed, the
LED backlight can be switched off to conserve
battery charge levels. The backlight “timed”
mode switches the backlight off after 10 minutes
of inactivity, again, to maximize battery operation.
The display’s wide viewing angle lets you read
the large characters and digits, or the analog
peaking meter, from a distance. You can display both the digital and analog types of readout using the meter’s split screen facility.
The analog peaking meter helps you make
accurate adjustments. User-defined upper and
lower scale limits, either in dBm or Watts, allow
you to control the sensitivity of the displayed
In subdued lighting conditions, you
can easily read the high resolution
The E-series and 8480 series sensors can operate with long sensor cables. Cable lengths up to
61 meters (200 feet) can be used in conjunction
with the 8480 series sensors. So, when you are
inside a radio station or up a radio mast, those
awkward transmitter and receiver adjustments are
made easy using long sensor cables.
In this setup, the top half of the split display
shows the analog peaking meter while the bottom display shows the same measurement with
a larger character size.
Available for an extra cost.
Designed for R&D
Optimum measurement accuracy and repeatability
means confidence in your power measurements
The EPM series power meters maintain the high accuracy
standard set by the Agilent 437B and 438A—being
designed to have excellent linearity. Instrumentation
absolute accuracy, due to the meter electronics, is
specified to be +0.02 dB in logarithmic mode and
+0.5% in linear mode—making this source of error a
negligible part of the overall measurement uncertainty.
In RF and microwave power measurements, the
largest errors are caused by:
• Sensor and source mismatch, and
• Sensor frequency response, non-linearity, and
temperature characteristics.
With the E4419B, ratio and difference measurements can be
made. Here the upper half of the display shows the gain of a
GSM amplifier while the lower half of the display shows the B
Channel absolute power measurement in dBm.
To minimize the mismatch error, the E-series
sensors have a low VSWR specification. To provide comprehensive error correction, the calibration factors, linearity and temperature error
correction information are stored in EEPROM.
Error correction is performed within the power
meter. Frequency data is entered by the user.
Taking account of the signal level, the frequency
being measured, and the temperature, appropriate correction values are applied to the measurement. This error correction process ensures
optimum measurement accuracy and repeatability over the full 0 to 55 ˚C temperature range.
User friendly interface for quick setup times
The power meter has an intuitive user interface.
Hardkeys for the most frequently used functions
and softkey menus simplify configuring the power
meter for your particular measurement needs. To
reduce repeated setup sequences, the SAVE/RECALL
menu allows you to save up to 10 instrument configurations.
Designed for R&D
More choice means the correct sensor for your application
The EPM series power meter’s compatibility with both the 8480
series and E-series sensors provides R&D engineers with more
• The EPM series power meter and 8480 series sensor combination form a high precision, average power measurement
system operating in the frequency range 100 kHz to 110 GHz
(depending on the selected sensor) over a 50 dB maximum
dynamic range.
• The EPM series power meter and E-series sensor combination is ideal for measuring signals in the frequency
range 9 kHz to 26.5 GHz, over a wide dynamic range,
from -70 dBm to +44 dBm, (depending on the selected
EPM Power Meter Options4
Option Number
Opt 001
Supplies internal rechargeable battery
Basic instrument transit case
Opt 002
Supplies parallel rear panel sensor input(s) (power reference oscillator on front panel only)
Yellow soft carry/operating case
Accessory pouch
Opt 003
Supplies parallel rear panel sensor input(s) and moves
the power reference oscillator to the rear panel
(Opt 0E3)
12 Vdc to 115 Vac inverter
(to 220/240 Vac)
Spare battery pack
Opt 004
Deletes the 11730A sensor cable(s)
Opt 0B0
Deletes the manual set
Opt 908
Rackmount kit (one instrument)
Opt 909
Rackmount kit (two instruments)
Opt 915
Opt 916
Opt 0BV
Opt A6J
Provides the service manual
Provides an extra User’s Guide and Programming Guide
Provides component level service documentation
Provides ANSI/NCSL Z540-1-1994 Certificate of Calibration
with test data and measurement uncertainties
With the exception of “delete” options, these are available for an extra
Only for EPM series power meters with Option 001 installed
Service and Support
Traceability to NIST
Agilent’s power measurements are traceable to the US
National Institute of Standards and Technology
Quality and Reliability
Agilent’s power meters and sensors are manufactured in ISO9002 registered facilities in accordance with Agilent’s commitment to quality.
The reliability of these instruments is proven
through extensive environmental testing.
Warranty and Extended Warranty
Included with each EPM series power meter 6 is
a standard three-year return-to-Agilent service
warranty. The E-series sensors have a one-year
return-to-Agilent service warranty. Support
options to extend warranty or cover periodic
calibrations are available. For more information, contact your local Agilent sales office.
Literature reference
EPM Series Power Meters and E-series
Power Sensors
Data Sheet
EPM Series Power Meters and E-series
Power Sensors
Configuration Guide
Fundamentals of RF and Microwave Power
Application Note 64-1B
4 Steps for Better Power Measurements
Application Note 64-4B
E-Series E9300A Power Sensors
Product Overview
For option 001, the 3 year warranty does not apply to the E9287A
battery pack.
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When you are choosing new equipment, we will help you with
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Product specifications and descriptions in this
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