Agilent Technologies 87421A Operating and safety instructions

The Agilent 87421A and 87422A power supplies
are universal input, dc switching power supplies
designed to provide the bias voltages needed to
operate Agilent microwave system amplifiers.
These compact power supplies are ideal for inte
gration into a system or for use on a benchtop.
The 2 meter dc bias cable permits the amplifier
to be remotely located, allowing it to be placed
out of the way or where space is not critical.
The 87421A is a 25 watt, ±12V dc power supply
designed to power the Agilent 83006A, 83017A,
83018A, and 87415A microwave system amplifiers.
A 2 meter cable is included for direct connection
to the amplifier.
The 87422A is a 90 watt, ±15V dc power supply
designed to power the Agilent 83020A microwave
system power amplifier. One additional ±12V dc
output is provided to power a preamp such as
the 83006A or 83017A.
Included with the power supply are the necessary
2 meter cables to connect to the amplifier.
The 87421A may also be used to provide bias volt
ages for the Agilent 83440C high speed lightwave
converter. Using the 83440 60009 lightwave con
verter power supply adapter, the 87421A becomes
a compact, convenient power supply for use with
the lightwave converter.
Agilent 87421A/87422A
Power Supply
Product Overview
• Designed specifically for Agilent Technologies
microwave system amplifiers
• Bias cable permits remote placement
• Compact size for easy system integration

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Product specifications
Agilent 87421A Agilent 87422A
Output voltage/current +12V at 2 A +15V at 4.0 A
–12V at 200 mA –15V at 200 mA
+12V at 2 A
–12V at 200 mA
Output power 25 W 90 W
Line regulation 0.1% 0.1%
Load regulation (20% to full load) 2.0% 1.0%
Output ripple 25 mV RMS max 25 mV RMS max
Output noise 2% peak to peak max 2% peak to peak max
Overvoltage limit protected Yes Yes
Short circuit protection Current limited for overload and shod Current limited for overload and short
circuit protection. Normal operation circuit protection. Normal operation
returns upon removal of overload. returns upon removal of overload.
General specifications
AC input voltage 90–250 VAC, 50/60 Hz 90–240 VAC, 50/60 Hz
Fuse 1 A, slow blow T 3.15 A
Weight 0.9 kg (2.0 lb) 2.1 kg (4.6 lb)
Shipping weight 1.8 kg (4.0 lb) 3.2 kg (7.0 lb)
Environmental specifications
Operating temperature 0° to +55° C full load 0° to +55° C full load
Storage temperature –40° to +70° C –40° to +70° C

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Other product and operating information
Operation of the power supplies involves connect
ing the power supplies output to the amplifier dc
input with the cable provided. The power supplies
include a power cord with protective ground for
connection to 90–240 VAC.
Mounting holes are provided as shown in the out
line drawings. The power supplies may be mounted
in any orientation with user supplied hardware.
To ensure continued compliance to product safety
and EMC specifications, connect the power supplies
to an amplifier only with the cable provided. Do
not attempt to modify or extend the dc output
cable. For help with special applications requiring
longer cables contact your Agilent call center listed
on the back page.
The power supplies have a fuse located next to
the IEC appliance inlet. If it is necessary to replace
the fuse, disconnect the power supply from both
AC power and the amplifier. Using a slotted screw
driver, open the fuse cover and replace the fuse.
The power supplies contain no user serviceable
parts (with the exception of the fuse). If service is
required, please contact your Agilent sales office
or nearest Agilent Service Center.
The Agilent 87421A power supply provides the dc power needed to bias the 83006A, 83017A, and 83018A. The power
supply comes with a 2 meter long cable to allow easy connection between the amplifier and the power supply.
Dimensions in millimeters and (inches).

4
Ordering information
Agilent 87421A power supply
Includes power supply, AC power cord, and part
number 83006 60005, which is a 2 meter cable with a
3 pin connector on one end and a D subminiature
connector on the other end for direct connection to
the Agilent 83006A, 83017A, 83018A, and 87415A
microwave system amplifiers.
Agilent 87422A power supply
Includes power supply and part number 83020 60001,
which is a 2 meter cable with 15 pin connectors for
direct connection to the Agilent 83020A amplifier.
One additional dc output is provided to supply power
to a preamplifier such as the 83006A or 83017A.
Other instruments and accessories
83006A Microwave System Amplifier,
0.01 to 26.5 GHz
83017A Microwave System Amplifier,
0.5 to 26.5 GHz
83018A Microwave System Amplifier,
2 to 26.5 GHz
83020A Microwave System Power Amplifier,
2 to 26.5 GHz
87415A Microwave System Amplifier,
2 to 8 GHz
83440C High Speed Lightwave Converter,
dc to 20 GHz, 1000 to 1600 mm
83440 60009 Lightwave Converter Power
Supply Adapter
The Agilent 87422A power supply provides the dc power needed to bias the 83020A. DC cables shown above shipped
with power supply. Dimensions in millimeters and (inches).

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Safety and Regulatory Information
Manufacturer’s Declaration
This is to certify that this product meets the requirements specified in IEC 1010 and
IEC Publication 348, Safety Requirements for Electronic Measuring Apparatus. It has
been supplied in a safe condition for indoor use only and may occasionally be subjected
to temperatures between +5 and –10 Celsius without degradation of its safety. The
present data sheet contains some information and warnings which have to be followed
by the user to ensure safe operation and to retain the product in safe condition. The
main plug shall be inserted in a socket outlet provided with a protective earth contact.
The protective action must not be negated by the use of an extension cord without
a protective conductor. Warning: Any interruption of the protective conductor inside
or outside the product or disconnection of the protective earth terminal is likely to
make the equipment dangerous. Intentional interruption is prohibited. This product
has been designed to be safe under the following environmental conditions: indoor use;
altitude up to 2,000 meters; temperature range expanded to include 0 to +55 Celsius;
maximum relative humidity 80% up to 31 degrees Celsius decreasing linearly to 50%
relative humidity at 40 degrees Celsius; mains supply voltage fluctuations not to exceed
±10% of nominal voltage; transient over voltage category II for the main ac supply
voltage; pollution degree two. If the equipment is used in a manner not specified by
Agilent Technologies, the protection provided by the equipment may be impaired.
Model 87422A

6
DECLARATION OF CONFORMITY
according to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
Manufacturer’s Name: Agilent Technologies, Inc.
Manufacturer’s Address: 1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799
USA
Declares that the products
Product Name: Microwave System Amplifiers
Model Numbers: 83006A, 83017A, 83018A, 83020A, 83050A,
83051A, 87421A, and 87422A
Product Options: This declaration covers all options of the
above products.
Conform to the following product specifications:
EMC: IEC 61326:1997+A1:1998+A2:2000/ EN 61326:1997+A1:1998+A2:2001
Standard Limit
CISPR 11:1997 / EN 55011:1998/A-1999 Group 1, Class A
IEC 61000-4-2:1995+A1998 / EN 61000-4-2:1995 4 kV CD, 8 kV AD
IEC 61000-4-3:1995 / EN 61000-4-3:1995 3 V/m, 80 - 1000 MHz
IEC 61000-4-4:1995 / EN 61000-4-4:1995 0.5 kV sig., 1 kV power
IEC 61000-4-5:1995 / EN 61000-4-5:1996 0.5 kV L-L, 1 kV L-G
IEC 61000-4-6:1996 / EN 61000-4-6:1998 3 V, 0.15 – 80 MHz
IEC 61000-4-11:1994 / EN 61000-4-11:1998 1 cycle, 100%
Supplementary Information:
The products herewith comply with the requirements of the Low Voltage Directive 73/23/EEC
and the EMC Directive 89/336/EEC and carry the CE-marking accordingly.
Santa Rosa, CA, USA 25 November, 2002 Greg Pfeiffer/Quality Engineering Manager
For further information, please contact your local Agilent Technologies sales office, agent or distributor.

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Printed in USA, November 26, 2002
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