AEA Technology Liberator Series Manuale utente

Operation Manual

Liberator Series

Bravo EX2 Analyzer

Testing Made Simple!

_ Technology, Inc.

Proprietary Information

Reproduction, dissemination, or use of information contained herein for purposes other than

operation and/or maintenance is prohibited without the written authorization from AEA Technology,

Inc.

without the written consent from AEA Technology, Inc.

The AEA Logos are trademarks of AEA Technology, Inc.

Acknowledgements:

Windows 7, Windows 10, and Power Point are registered trademarks of Microsoft Corp. WD-40 is

a registered trademark of WD-40 Company

409 cleaner is a registered trademark of Clorox Corporation

6053-3020 October, 2021

WARNINGS

DC Port and A/C Adapter

Connecting and Operating the Analyzer while using the A/C or D/C adapters can create external

sparks during connection. Connecting or use of these power sources in an explosive atmosphere is

dangerous and should never be attempted. Always connect the BRAVO EX2 away from any

explosive atmosphere. Use ONLY internal battery power if the presence of explosive fumes is a

potential hazard.

Coax Test Ports

Thepresenceofanyvoltage,fromanappliedsourceorstaticbuild-uponcablesor antennas, particularly

vacant cables with no terminations or grounding, can cause an ignitionsparkwhentheyareconnected

tothe EX2 Analyzer. Cautionshouldbetakento ensurecablesarefreeofanyvoltagesorstaticcharge

priortoconnectingtheinstrumentin a potentially explosiveatmosphere.

Operating Precautions

Although the Bravo EX2 is a rugged instrument, care should be taken to avoid exposing it to excessive

external RF or a Magnetic Field. Do not connect the Bravo EX2 to an active transmitter.

The EX2 Analyzer, when in its Belt Case, is splash resistant and designed to work for relatively long

periods in rain depending on intensity. It is not designed to be immersed in water. See Cleaning

Instructions in the appendix.

The Test Port is limited to +15dBm input power. Power exceeding this level could damage sensitive

input components.

Batteries

When batteries are required you can use Alkaline or NI-MH "AA" Batteries in the EX2 Analyzer, but

when installed go to the Battery Menu and set the Battery Type to ALKALINE, NiMH, or NONE.

Cleaning

Under ordinary operating conditions, it should only be necessary to occasionally wipe the VIA Bravo

EX2 with a soft, water moistened cloth. Avoid using solvents which may attack the plastic.

The EX2 Analyzer is designed to be safely operated in normal testing environments. Instrumentisnottobe

usedincriticalapplicationswherefailureof the instrument or inaccuracies in data might cause personal

injury or property damage. Use in such applications is not recommended

If you have any questions concerning the use of the EX2 Analyzer or other AEA Technology, Inc.

instruments please contact us at:

Tel: 1-800-258-7805 or +1-760-931-8979 or Email: techsupport@aeatechnology.com

iii

Battery Precautions

Failure to carefully observe the following procedures and precautions can result in leakage of battery

fluid (electrolyte), heat generation, bursting, fire and serious personal injury.

Never dispose of Ni-MH batteries in a fire or heat them. Doing so may cause them to burst.

Do not connect the + (positive) and - (negative) terminals of Ni-MH batteries together with electrically

conductive materials, including lead wires.

Never disassemble Ni-MH batteries.

The + (positive) and - (negative) terminals of Ni-MH batteries are predetermined, observe polarity.

WARNING

1. Keep Ni-MH batteries or the equipment out of the reach of infants and small children.

2. Do not over-charge Ni-MH batteries by leaving the unit plugged in for extended periods.

3. Do not use Ni-MH batteries if the outer tube/label is scratched or damaged.

CAUTION

1. Do not use old and new batteries mixed together, or batteries at different charge levels. Do not

use Ni-MH batteries mixed together with a dry cell or other battery of a different capacity, type, or

brand name.

2. Do not charge Ni-MH batteries beyond the recommended time described in this instruction

manual.

3. After long term storage, there is a possibility that a battery cannot be fully charged. In order to

fully charge it, charge and discharge the battery a few times.

4. After they have been removed from equipment, store Ni-MH batteries in a dry place and within

the recommended storage temperature range.

Electrostatic Discharge (ESD) Precautions

The SWR Analyzer was constructed in an ESD protected environment. This is because most of the

semiconductor devices used in this instrument are susceptible to damage by static discharge.

Static charges are generated in numerous ways, such as simple contact, separation of materials, and

normal motions of persons working with the SWR Analyzer. To prevent instrument damage, practice

industry accepted techniques for handling static sensitive devices when using the SWR Analyzer. Very

often, coaxial cables and antennas also build up a static charge, which, if allowed to discharge by

connecting to the SWR Analyzer, may damage the instrument input circuitry. To avoid such damage, it is

recommended to dissipate any static charges by temporarily attaching a short to the cable or antenna

prior to attaching to the instrument.

If this instrument does become subject to ESD, be advised that the instrument may reset itself in this

event, and re-entry of the sweep parameters may be necessary.

The SWR Site Analyzer is designed to be safely operated in normal testing environments. If you have any

questions concerning the use of the Site Analyzer or other AEA Technology,Inc.instruments please contact us

at:

Tel: 1-800-258-7805 or +1-760-931-8969 or Fax: +1-760-931-8969

Email: techsupport@aeatechnology.com

BRAVO EX2 Literature Introduction

There are two literature items available for the EX2 Analyzer:

Quick Start Guide is a laminated tri-fold held in the Belt Case’s inside pocket. This provides a light-

weight condensed guide to calibration, measurement functions and menus

Operator Manual instructional guide which has three purposes:

1. Gives a concise description of the instrument, keypad, menus and measurement

screens.

2. Provides user instructions in more detail than the Quick Start Guide including a section on

Measurement Information and Helpful Tips.

3. Provides specifications, troubleshooting guides, and accessories lists.

Both these items are available on line or the enclosed CD in PDF format ready for printing.

NOTES:

1.In addition to digital files of this literature the enclosed CD also contains AEA's PC Vision™

software and a training Power Point presentation.

2.All these items and technical support is also available on our website: www.aeatechnology.com

Table of Contents

Proprietary Information.......................................................................................................................................... i

WARNINGS ............................................................................................................................................................ ii

DC Port and A/C Adapter................................................................................................................................ ii

Coax Test Ports............................................................................................................................................... ii

Operating Precautions..................................................................................................................................... ii

Batteries .......................................................................................................................................................... ii

Cleaning .......................................................................................................................................................... ii

Battery Precautions........................................................................................................................................ iii

Electrostatic Discharge (ESD) Precautions.................................................................................................... iii

If this instrument does become subject to ESD, be advised that the instrument may reset itself in this event,

and re-entry of the sweep parameters may be necessary..................................................................................... iii

BRAVO EX2 Literature Introduction ...................................................................................................................... iv

NOTES:.................................................................................................................................................. iv

EX2 Analyzer Description ....................................................................................................................................... 1

General............................................................................................................................................................1

Instrument Front Panel Layout

............................................................................................................................ 1

Screen Layouts................................................................................................................................................2

General....................................................................................................................................................2

VNA Screen.............................................................................................................................................2

SWR & Return Loss Screen....................................................................................................................3

S21 Screen (two-port) .............................................................................................................................3

Keypad Operations

............................................................................................................................................... 4

Power ON/OFF

..............................................................................................................................................4

POWER ON.............................................................................................................................................4

NORMAL POWER DOWN......................................................................................................................4

HARD POWER DOWN ...........................................................................................................................4

Soft Reset........................................................................................................................................................4

Menu Keys

........................................................................................................................................................5

Function Keys

....................................................................................................................................................5

Help Key..................................................................................................................................................5

SWR/RL...................................................................................................................................................5

VNA Key..................................................................................................................................................5

FREQ Key ...............................................................................................................................................5

SCALE Key..............................................................................................................................................6

SWEEP/CW Key .....................................................................................................................................6

Menus

..................................................................................................................................................................... 8

Menu Navigation..............................................................................................................................................8

Meter Menu .....................................................................................................................................................8

BACKLIGHT............................................................................................................................................8

COLOR SCHEME ...................................................................................................................................8

KEYPAD BEEP .......................................................................................................................................9

BATTERY MENU ....................................................................................................................................9

DATE/TIME ...........................................................................................................................................10

Mode Menu....................................................................................................................................................10

. 11

VNA MODE ...........................................................................................................................................11

CALIBRATIONS....................................................................................................................................11

BROADBAND CAL................................................................................................................................11

SYSTEM Z0...........................................................................................................................................12

GRID LINES..........................................................................................................................................12

MORE OPTIONS...................................................................................................................................12

OTHER OPTIONS Menu...............................................................................................................................13

RLC MODEL..........................................................................................................................................13

SWEEP ENABLE ..................................................................................................................................13

MEMORY OPERATIONS..............................................................................................................................13

DATA SAVE ..........................................................................................................................................13

DATA RECALL......................................................................................................................................13

SAVE SETTINGS..................................................................................................................................13

RECALL SETTINGS..............................................................................................................................14

Measurement and Support Screens ..................................................................................................................... 14

General Information.......................................................................................................................................14

Measurement Screens ..................................................................................................................................14

SWR Screen..........................................................................................................................................15

Return Loss Screen...............................................................................................................................15

CW –Continuous Wave Screen............................................................................................................16

Cable Null Screens................................................................................................................................16

Calibration Sequence Screens..............................................................................................................16

BRAVO EX2 VNA Measurements.......................................................................................................................... 17

General Information.......................................................................................................................................17

S11 VNA SCREEN................................................................................................................................17

S21 (Two-Port) VNA Screen .................................................................................................................18

Calibration, Measurement Information and Helpful Tips ..................................................................................... 18

Calibration Processes....................................................................................................................................18

Broadband Calibration Process.............................................................................................................19

Frequency Specific Calibration Process................................................................................................19

SWR (Standing Wave Ratio a.k.a. Voltage Standing Wave Ratio-VSWR)...................................................21

Return Loss...................................................................................................................................................21

SWR and Return Loss Measurement Steps..................................................................................................22

PC Vision™ ........................................................................................................................................................... 23

Abstract .........................................................................................................................................................23

Installing PC Vision........................................................................................................................................23

Running PC-Vision........................................................................................................................................23

Display Screen ......................................................................................................................................25

S11 Single-Port Operation.....................................................................................................................26

Graphs in Detail.....................................................................................................................................28

Z-Plot.....................................................................................................................................................29

Smith Chart............................................................................................................................................29

Limit Lines .............................................................................................................................................30

S21 (Two-port) Operation......................................................................................................................31

Naming Your Chart................................................................................................................................32

vii

Saving Traces........................................................................................................................................33

Exporting .s1p and .s2p Trace Data......................................................................................................34

Check Connection.................................................................................................................................34

Instrument File Management.................................................................................................................34

Warranty, Maintenance, and Troubleshooting Guides ........................................................................................ 37

Limited Warranty ...........................................................................................................................................37

Maintenance..................................................................................................................................................37

Battery Replacement Instructions..................................................................................................................37

Cleaning ........................................................................................................................................................38

Instrument Troubleshooting Guide................................................................................................................39

Factory Reset................................................................................................................................................39

Used to recover any program faults and then restores the factory defaults..................................................39

Appendix A .......................................................................................................................................................... 40

Specifications ................................................................................................................................................40

Appendix B .......................................................................................................................................................... 41

EX2 Analyzer Model and Accessories...........................................................................................................41

Included items Part Number..............................................41

All Specifications and included items are subject to change without notice. ........................................................ 41

EX2 Analyzer Description

General

The BRAVO EX2 analyzer measures complex impedances of electrical components. The results of

the measurements are displayed graphically, with some numeric detail. You may choose to display

the impedance from among several formats. The BRAVO EX2 sweeps across a range of frequencies,

or operates at CW, either way the display is continuously updated with new measurement results. This

unit has many applications, including, but not limited to:

1. Tune/align antennas, resonant cavities, etc.

2. Measure Z, Phase Angle, Resistance, and/or Reactance of a load

3. Portable and economic replacement for network analyzer applications that measure S11.

4. Find resonant frequency and response curve

5. CW signal generator

6. Two plots may be simultaneously viewed on the same graph.

The BRAVO EX2 communicates with your PC via the PC Vision™ application software allowing the

user to remotely control the instrument or view results on the PC's much larger display, in either X-Y or

Smith Chart plot format. The impedance altering effects of coax cable can be nulled out, so that the

true parameters of the load at the end of the coax are displayed. The BRAVO EX2 operates over a

wide range of characteristic impedances, so you are not limited to measuring 50Ω systems.

Operator conveniences include: Non volatile storage, back lit display, display brightness adjustment,

versatile output displays, and USB port communications. The BRAVO EX2 can be powered either by

"AA" batteries or the supplied wall adapter.

Instrument Front Panel Layout

Instrument Top Panel Layout

Screen Layouts

General

The BRAVO EX2 has three operating modes, VNA, SWR/RL and S21 (two-port). The elements of

these screens will be described here. Shown below is the VNA screen layout:

VNA Screen

Features of interest are as follows:

Left & Right Scale indicators: These labels, in the upper corners of the chart area, indicate which

measurement that scale is for, and, more importantly, which trace is using that scale. The color of the

frame drawn around the label is always the same color as the trace using that scale.

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