BIRD 4421A User manual

Power Meter
4421A
Operation Manual
This is a preliminary manual. Specifications, limits, and text are subject to change
without notice. The information within this manual was as complete as possible at the
time of printing. Bird Technologies, Inc.is not liable for errors.
Check our Web Site for updates: http://www.birdrf.com/
© Copyright 2019 by Bird Technologies, Inc.
Instruction Book Part Number 920-4421A Rev. P2

4421A Power Meter
i
Safety Precautions
The following are general safety precautions that are not necessarily related to
any specific part or procedure, and do not necessarily appear elsewhere in this
publication. These precautions must be thoroughly understood and apply to all
phases of operation and maintenance.
WARNING
Keep Away From Live Circuits
Operating Personnel must at all times observe general safety
precautions. Do not replace components or make adjustments to the
inside of the test equipment with the high voltage supply turned on.
To avoid casualties, always remove power.
WARNING
Do Not Service Or Adjust Alone
Under no circumstances should any person reach into an enclosure
for the purpose of service or adjustment of equipment except in the
presence of someone who is capable of rendering aid.
WARNING
Safety Earth Ground
An uninterruptible earth safety ground must be supplied from the
main power source to test instruments. Grounding one conductor of
a two conductor power cable is not sufficient protection. Serious
injury or death can occur if this grounding is not properly supplied.
WARNING
Resuscitation
Personnel working with or near high voltages should be familiar with
modern methods of resuscitation.
WARNING
Remove Power
Observe general safety precautions. Do not open the instrument
with the power on.

Safety Precautions
ii
Safety Symbols
Note: Calls attention to supplemental information.
Warning Statements
The following safety warnings appear in the text where there is danger to
operating and maintenance personnel and are repeated here for emphasis.
See page 7 and 8
See page 10
See page 10
WARNING
Warning notes call attention to a procedure, which if not correctly
performed, could result in personal injury.
CAUTION
Caution notes call attention to a procedure, which if not correctly
performed, could result in damage to the instrument.
WARNING
Never attempt to connect or disconnect RF equipment from the
transmission line while RF power is applied.
Leaking RF energy is a potential health hazard.
WARNING
To avoid personal injury, disconnect the power cord from the AC line
before performing any maintenance.
WARNING
The Bird 4421A contains no user-serviceable parts.
Do not remove its cover.

4421A Power Meter
iii
Caution Statements
The following equipment cautions appear in the text and are repeated here for
emphasis.
See page 7
See page 11
CAUTION
Do not exceed the RF Power or RF frequency specifications of the RF
Power Sensor.
CAUTION
Do not store at temperatures below -20° C (-4° F) or above 70° C
(158° F).
Equipment damage may result.

Safety Precautions
iv
Safety Statements
USAGE
ANY USE OF THIS INSTRUMENT IN A MANNER NOT SPECIFIED BY
THE MANUFACTURER MAY IMPAIR THE INSTRUMENT’S SAFETY
PROTECTION.
USO
EL USO DE ESTE INSTRUMENTO DE MANERA NO ESPECIFICADA
POR EL FABRICANTE, PUEDE ANULAR LA PROTECCIÓN DE
SEGURIDAD DEL INSTRUMENTO.
BENUTZUNG
WIRD DAS GERÄT AUF ANDERE WEISE VERWENDET ALS VOM
HERSTELLER BESCHRIEBEN, KANN DIE GERÄTESICHERHEIT
BEEINTRÄCHTIGT WERDEN.
UTILISATION
TOUTE UTILISATION DE CET INSTRUMENT QUI N’EST PAS
EXPLICITEMENT PRÉVUE PAR LE FABRICANT PEUT
ENDOMMAGER LE DISPOSITIF DE PROTECTION DE
L’INSTRUMENT.
IMPIEGO
QUALORA QUESTO STRUMENTO VENISSE UTILIZZATO IN MODO
DIVERSO DA COME SPECIFICATO DAL PRODUTTORE LA
PROZIONE DI SICUREZZA POTREBBE VENIRNE COMPROMESSA.

4421A Power Meter
v
SERVICE
SERVICING INSTRUCTIONS ARE FOR USE BY SERVICE - TRAINED
PERSONNEL ONLY. TO AVOID DANGEROUS ELECTRIC SHOCK, DO
NOT PERFORM ANY SERVICING UNLESS QUALIFIED TO DO SO.
SERVICIO
LAS INSTRUCCIONES DE SERVICIO SON PARA USO EXCLUSIVO
DEL PERSONAL DE SERVICIO CAPACITADO. PARA EVITAR EL
PELIGRO DE DESCARGAS ELÉCTRICAS, NO REALICE NINGÚN
SERVICIO A MENOS QUE ESTÉ CAPACITADO PARA HACERIO.
WARTUNG
ANWEISUNGEN FÜR DIE WARTUNG DES GERÄTES GELTEN NUR
FÜR GESCHULTES FACHPERSONAL.
ZUR VERMEIDUNG GEFÄHRLICHE, ELEKTRISCHE SCHOCKS, SIND
WARTUNGSARBEITEN AUSSCHLIEßLICH VON QUALIFIZIERTEM
SERVICEPERSONAL DURCHZUFÜHREN.
ENTRENTIEN
L’EMPLOI DES INSTRUCTIONS D’ENTRETIEN DOIT ÊTRE RÉSERVÉ
AU PERSONNEL FORMÉ AUX OPÉRATIONS D’ENTRETIEN. POUR
PRÉVENIR UN CHOC ÉLECTRIQUE DANGEREUX, NE PAS
EFFECTUER D’ENTRETIEN SI L’ON N’A PAS ÉTÉ QUALIFIÉ POUR CE
FAIRE.
ASSISTENZA TECNICA
LE ISTRUZIONI RELATIVE ALL’ASSISTENZA SONO PREVISTE
ESCLUSIVAMENTE PER IL PERSONALE OPPORTUNAMENTE
ADDESTRATO. PER EVITARE PERICOLOSE SCOSSE ELETTRICHE
NON EFFETTUARRE ALCUNA RIPARAZIONE A MENO CHE
QUALIFICATI A FARLA.

About This Manual
vi
About This Manual
This manual covers the operating & maintenance instructions for the following
models:
Changes to this Manual
We have made every effort to ensure this manual is accurate. If you discover any
errors, or if you have suggestions for improving this manual, please send your
comments to our Solon, Ohio factory. This manual may be periodically updated.
When inquiring about updates to this manual refer to the part number and
revision on the title page.
Chapter Layout
Introduction — Describes the features of the RF Power Meter.
Setup — Includes unpacking and equipment setup.
Operating Instructions — Identifies steps required to power on, use, and
power off the Power Meter.
Troubleshooting — Provides limited troubleshooting instructions for
commonly encountered problems.
Maintenance — Lists routine maintenance tasks as well as storage and
shipping instructions.
Specifications — Provides the specifications for the Bird RF Power Meter.
4421A

vii
Table of Contents
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Warning Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Caution Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Safety Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Changes to this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Chapter Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Display Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Display Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Settings Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Preparation for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Charge the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 3 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 4 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Storage and Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 6 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bird 4421A Power Meter Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1
Chapter 1 Introduction
The Bird 4421A Power Meter is used with Bird power sensors to measure RF
power.
General Description
The 4421A Power Meter is designed to be used with the Bird Power Sensors as
shown in
Table 1 . The 4421A is equipped with a touchscreen interface.
Figure 1 Bird 4421A Power Meter Assembly
Table 1 - Compatible Power Sensors
Sensor Type Bird Model Number Connection
Directional Power Sensors
(DPS) 4021, 4022, 4023, 4024, 4025, 4027, 4028 Sensor 1 or Sensor 2
Connector (Serial)

4421A Power Meter
2
Controls and Indicators
Figure 2 Front Panel
Item Indicator Description
1 Display/Touch Screen Displays Power Sensor information and acts as the
user interface.
2 Sensor connectors Two sensor cable connectors. One or both may be
used.
3Ethernet LAN
Connector
Ethernet LAN connector provides access to the
devices web UI and firmware update capability.
4AC Power Input
Connector
Power input connector (C-14, male), 100-240 VAC,
50-60 Hz, with integrated fuse holder, requires 1A,
5x20mm, slow-blow fuse.
5Power Switch
Used to apply and remove power from the unit.
Illuminated ring indicates power is applied to the
unit.
• Press and release (short press) the power
button for normal power down.
• Press and hold (long press) the power button
for 3 seconds to force power off.






Introduction
3
Display Features
The 4421A display is capable of displaying the measurement information from
one or two sensors simultaneously. See
Figure 3 .
The display may be configured to display the following measurements from a
sensor:
Forward Power
Reflected Power
VSWR
Return Loss
Reflection Coefficient
Figure 3 Sensor Measurements Display














 














 

4421A Power Meter
4
Display Controls and Indicators
The display is used for presenting information and controlling the behavior of
the 4421A. The controls are those items displayed on the screen, that, when
tapped cause a change in the 4421A’s behavior. Controls can be identified by
their color, on screen controls are yellow. The table in
Figure 4 describes the on
screen controls and indicators.
Figure 4 Display Controls
Item Indicator Description
1Battery/AC Power
indicator
When connected to AC power, a facsimile of an AC
Power Plug is displayed. When on battery power, the
charge level of the batteries in displayed.
2 IP Address Icon When tapped displays the 4421A’s IP address, if
connected to an Ethernet Network.
3Forward and
Reflected Power
The sensor readings for Forward and Reflected
power may be displayed in milliwatts, Watts, or
Kilowatts.
4Measurement Unit
The 4421A will display the signal measurements in
Watts or dBm.
5Settings Menu
The settings menu is used to configure what
measurement information is displayed. See
"Settings Menu" on page 5 .
6
VSWR /
Return Loss/
Reflection Coefficient
This line on the display can be set to display one of
three measurements:
VSWR, Return Loss, or Reflection Coefficient
The
Settings Menu is used to select which
measurement is displayed.













Introduction
5
Settings Menu
The setting menu is used to select what information will appear on the 4421A’s
display.
Figure 5 describes the options available via the setting menu.
Figure 5 Settings Menu















6
Chapter 2 Setup
This chapter provides information for unpacking, inspection, and preparing the
Bird Power Meter for use.
Unpacking and Inspection
1. Carefully inspect shipping container for signs of damage.
2. Do one of the following:
If the shipping container is damaged, do not unpack the unit.
Immediately notify the shipping carrier and Bird Electronic
Corporation.
If the shipping container is not damaged, unpack the unit. Save
shipping materials for repackaging.
3. Inspect unit for visual signs of damage.
Note: If there is damage, immediately notify the shipping carrier
and Bird Electronic Corporation.
Preparation for Use
Charge the Battery
It is recommended that the batteries be charged before initial use.
The AC power source required is 100 - 240 V @ 50 - 60 Hz, 1.
1. Place the 4421A Power Meter on a stable work area.
2. Connect Power Cord to AC power input connector on the 4421A.
3. Plug the cable into the AC power source.

Setup
7
Setup
Setup consists of ensuring the 4421A has a power source, internal batteries or
AC power source, and attaching a Bird Power Sensor.
Use the 4421A in a dry, dust-free environment.
AC power source, if used, is 100 - 240 V @ 50 - 60 Hz, 1.
1. Press the power button on the left side of the 4421A.
2. Connect the sensor cable to one of the sensor cable connectors on the right
side of the 4421A. See
Figure 6 .
3. Connect the remaining end of the sensor cable to a power sensor.
Note: The 4421A’s display should indicate a sensor has been
connected.
Sensor RF Connections
1. Connect the RF Power Sensor’s output connector to the load.
2. Connect the RF Power Sensor’s input connector to the RF source.
Figure 6 4421A Connections
WARNING
Never attempt to connect or disconnect RF equipment from the
transmission line while RF power is applied.
Leaking RF energy is a potential health hazard.
CAUTION
Do not exceed the RF Power or RF frequency specifications of the RF
Power Sensor.



8
Chapter 3 Operating Instructions
Normal Operation
Power On
Note: This procedure assumes the RF Power Sensor is already
installed in the RF transmission line. See
"Setup" on page 7 for
additional information regarding setup of the 4421A.
1. Press Power button on the Bird 4421A power meter side panel.
2. The 4421A takes approximately 20 seconds to complete the boot-up
sequence.
3. If required, connect the AC power cable to the 4421A.
4. Connect the sensor cable to one of the sensor cable connectors on the right
side of the 4421A.
5. Connect the remaining end of the sensor cable to a power sensor.
Note: The 4421A’s display should indicate a sensor has been con-
nected.
6. Repeat
step 4 and step 5 to connect a second RF sensor to the 4421A.
Power Off
1. Press and release the power button for normal power down.
2. If required, disconnect the AC power supply cable.
3. Disconnect the sensor cable(s) from the sensor cable connector(s) on the
right side of the 4421A.
WARNING
Never attempt to connect or disconnect RF equipment from the
transmission line while RF power is applied.
Leaking RF energy is a potential health hazard.

9
Chapter 4 Troubleshooting
PROBLEM POSSIBLE CAUSE CORRECTION
Power meter has no
power
Are the batteries charged? Connect the AC power cord to
an AC outlet.
Is the power meter’s AC power
cord connected to an AC
outlet?
Connect the power cord.
Power sensor is not
automatically detected
by the 4421A.
Is the sensor cable connected
to both the power meter and
power sensor?
Connect sensor cable.
Is the sensor cable defective? Replace sensor cable.

10
Chapter 5 Maintenance
This chapter describes routine maintenance. Service beyond this level, or that in
Chapter 4, Troubleshooting, page 9, return the unit to a qualified service center.
Routine Maintenance
The Bird 4421A Power Meter requires only simple, routine maintenance.
Wipe off dust and dirt regularly. Disconnect this equipment from any
AC outlet before cleaning. Use a damp cloth. Do not use liquid or spray
detergents for cleaning.
Check the connectors and cables for damage.
Storing the 4421A
If the 4421A is stored, charge the batteries every 30 days. See "Charge
the Battery" on page 6 .
WARNING
To avoid personal injury, disconnect the power cord from the AC line
before performing any maintenance.
WARNING
The Bird 4421A contains no user-serviceable parts.
Do not remove its cover.

Maintenance
11
Storage and Shipment
Storage
1. Cover Bird 4421A Power Meter before storing to keep out dust and dirt.
2. Store in a dry, dust-free environment where the ambient temperature will
remain between –20 and +70 °C (–4 to +158 °F).
3. Disconnect Power Meter from the power source to avoid damage by
transient over-voltage.
4. If storage will last longer than 30 days, charge the batteries as specified in
"Routine Maintenance" on page 10 .
Shipment
Package instrument using the original shipping container. If the original shipping
container is not available, use a corrugated box. Place shock absorbing material
around all sides of the instrument to prevent movement during handling or
shipment. Equipment packaging shall be in accordance with best commercial
practices.
Customer Service
Any maintenance or service procedure beyond the scope of those in this chapter
should be referred to a qualified service center.
If the unit needs to be returned for any reason, request an Return Material
Authorization (RMA) through the Bird Technologies website. All instruments
returned must be shipped prepaid and to the attention of the RMA number.
Bird Service Center
30303 Aurora Road
Cleveland (Solon), Ohio 44139-2794
Fax: [phone]
E-mail: [e-mail]
For the location of the Sales Office nearest you, visit our Web site at:
http://www.birdrf.com
CAUTION
Do not store at temperatures below -20° C (-4° F) or above 70° C
(158° F).
Equipment damage may result.

12
Chapter 6 Specifications
Bird 4421A Power Meter Specifications
Compatible Bird Power
Sensors 4021, 4022, 4023, 4024, 4025, 4027, 4028
Sensor Detection Automatic Sensor detection
Multiple sensor support Two sensor may be connected simultaneously.
Connection to sensor Wired
Display
Type 9.7" TFT full color LCD (LED back light), touch screen
Resolution 1024x768
Calibration interval Not required
I/O Connectors
RS-485 (Sensor)
Ethernet
2
1
Environment
Operating Temperature 0° to 50° C (32° to 122° F)
Storage Temperature -20° to 70° C (-4° to 158° F)
AC/DC Power Supply
Input Voltage 100 - 240 V @ 50 - 60 Hz, 10.5 A.
Physical Characteristics
Dimensions, nominal: H x W x D
9 11/16 in. x 10 5/8 in. x 3 37/64 in.
(246 mm x 270 mm x 91 mm)