ESCO Technologies 3126C Series Manual de usuario

Model 3126C Series

Sleeve Dipole Antenna

Product Manual

PN: 1723532

August, 2023

Rev C

ets-lindgren.com

ETS-Lindgren Inc. reserves the right to make changes to any products herein to improve functioning or design.

Although the information in this document has been carefully reviewed and is believed to be reliable, ETS-Lindgren

does not assume any liability arising out of the application or use of any product or circuit described herein; nor does

it convey any license under its patent rights nor the rights of others. All trademarks are the property of their respective

owners.

document may be copied by any means without written permission from ETS-Lindgren Inc.

Trademarks used in this document: The ETS-Lindgren logo is a registered trademark of ETS-Lindgren, Inc.; Teon is a

registered trademark of E. I. du Pont de Nemours and Company or its a󰀩liates.

Revision Record

MANUAL, 3126C | Part # 1723532 Rev C

Revision Description Date

AInitial Release January, 2021

BUpdate to match antenna version November, 2022

CAdded 3126C-6500 August, 2023

TABLE OF CONTENTS

NOTES, CAUTIONS AND WARNINGS 4

INTRODUCTION 5

Standard Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ETS-Lindgren Product Information Bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MAINTENANCE 6

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Contacting ETS-Lindgren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Sending a Component For Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Calibration Services and Annual Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SPECIFICATIONS 7

Performance Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Physical Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

MOUNTING 8

OPERATION 9

Notes, Cautions, and Warnings

Note: Denotes helpful information intended to provide tips for better use of

the product.

CAUTION: Denotes a hazard. Failure to follow instructions could result in

minor personal injury and/or property damage. Included text gives proper

procedures.

WARNING: Denotes a hazard. Failure to follow instructions could result in

SEVERE personal injury and/or property damage. Included text gives proper

procedures.

*All notes, cautions, and warnings will be located on the left column area of the page.

See the ETS-Lindgren Product Information Bulletin for safety, regulatory, and other product marking

information

WARRANTY

Only qualied personnel

should operate (or service)

this equipment. If you have

any questions concerning

maintenance, contact

ETS-Lindgren Technical

Support. Warranty may

be voided if housing is

opened.

See the ETS-Lindgren

Product Information Bulletin

for safety, regulatory, and

other product marking

information.

ETS-Lindgren may

substitute a similar part

or new part number with

the same functionality for

another part/part number.

Contact ETS-Lindgren

for questions about part

numbers and ordering

parts.

1.0 Introduction

The ETS-Lindgren Model 3126C Series Sleeve Dipole antennas are omnidirectional, having

an electric dipole pattern approaching that of a half wave resonant dipole.

The sleeve dipole design allows the antenna to be end fed to avoid cable and feed point

interactions that interfere with the performance of the antenna. Integral quarter wave chokes

and ferrite loading also help to reduce cable interaction. The max VSWR is 1.75:1 through

the entire band. Symmetry is <±0.2 dB throughout the frequency range. The dipoles have

nominal impedance of 50 Ω, a maximum continuous transmit power of one watt, and are

equipped with a female SMA connector.

Standard Conguration

• Model 3126C Sleeve Dipole Antenna

• Accredited Calibration certicate for the VSWR, Gain and Symmetry

ETS-Lindgren Product Information Bulletin

See the ETS-Lindgren Product Information Bulletin included with your shipment for the

following:

• Safety, regulatory, and other product marking information

• Steps to receive your shipment

• Steps to return a component for service

• ETS-Lindgren calibration service

• ETS-Lindgren contact information

2.0 Maintenance

Cleaning

Maintenance of the Model 3126 is limited to external components such as cables or

connectors.

If the 3126C requires cleaning, use a clean soft cloth moistened with water. Do not use any

harsh or abrasive chemicals; they may damage the components.

Service Procedures

Contacting ETS-Lindgren

Please see ets-lindgren.com for a list of ETS-Lindgren o󰀩ces, including phone and

email contact information.

Sending a Component For Service

For the steps to return a system or system component to ETS-Lindgren for service, see

the Product Information Bulletin included with your shipment.

Calibration Services and Annual Calibration

See the Product Information Bulletin included with your shipment for information on

ETS-Lindgren calibration services.

ETS-Lindgren may

substitute a similar part

or new part number with

the same functionality for

another part/part number.

Contact ETS-Lindgren

for questions about part

numbers and ordering

parts.

3.0 Specications

Performance Specications

Model Range Pass/Fail Criteria

3126C-3500 3 GHz to 4 GHz a) Symmetry < 0.2dB through entire Calibration

Range

b) Max VSWR is 1.75:1 through entire band.

c) Gain for 3126C-3500 must be greater than 1.0

MHz at center frequency.

3126C-4500 4 GHz to 5 GHz

3126C-6500 6 GHz to 7.2 GHz

Model VSWR Entire

Band

Gain

(MHz)

Calibration Range

(MHz)

Pts

per

Trace

Upper

Limit

From-To

(MHz)

Lower

Limit

Upper

Limit

From-To Span

3126C-3500 1.75:1 3000-4000 1.0 2.2 3000-4000 1000 501

3126C-4500 1.75:1 4000-5000 1.0 2.2 4000-5000 1000 501

3126C-6500 1.75:1 6000-7200 1.0 2.2 6000-7000 1000 601

Electrical Specications

Maximum Continuous Power 1 Watt

Impedance (Nominal) 50 Ohms

Connector SMA

Physical Specications

Model Diameter A Diameter B Overall Length Weight

3126C-3500 1.9 cm (0.75 in) 7.62 cm (3.00 in) 20.83 cm (8.20 in) 0.13 kg (0.29 lb)

3126C-4500 1.9 cm (0.75 in) 7.62 cm (3.00 in) 20.83 cm (8.20 in) 0.13 kg (0.29 lb)

3126C-6500 1.9 cm (0.75 in) 7.62 cm (3.00 in) 20.83 cm (8.20 in) 0.13 kg (0.29 lb)

3126C antennas are

precision measurement

devices. Handle your

antenna with care.

WARRANTY

Only qualied personnel

should operate (or service)

this equipment. If you have

any questions concerning

maintenance, contact

ETS-Lindgren Technical

Support. Warranty may

be voided if housing is

opened.

ETS-Lindgren may

substitute a similar part

or new part number with

the same functionality for

another part/part number.

Contact ETS-Lindgren

for questions about part

numbers and ordering

parts.

4.0 Mounting

The Model 3126C Series Sleeve Dipole Antenna must be mounted to a support at the

connector end of the antenna. An ETS-Lindgren mounting kit is recommended to support the

antenna.

Under no circumstances should any mounting structure extend inward more than 1.5 inches

(38 mm) past the connector end of the antenna. This area approaches the radiating element

of the antenna and any material in this region will signicantly change the performance of the

antenna and a󰀨ect the accuracy of the measurement. The mounting structure should have a

low dielectric and a minimum amount of mass in the region of the antenna.

When mounting to an ETS-Lindgren mounting kit:

• The antenna mount consists of a Teon®sleeve with small clamp screws to hold the

antenna in place.

• Fixed length spacers are then attached to the mounting sleeve to position it at each test

position. For repeatable positioning, the antenna must be inserted into the sleeve until

it bottoms out in the socket, then the clamp screws should be tightened symmetrically

around the antenna to ensure that the axis of the antenna is along the axis of the mount.

• Note that an RF cable must be attached to the antenna prior to inserting it into the

mounting socket.

• An optional blind mate socket and adapter combination is available to allow attaching

the cable to the Teon socket adapter and sliding the antenna with blind mate connector

adapter into the RF socket.

Ferrite loaded RF cables are recommended for use with the Model 3126C to minimize

the interaction with the dipole. ETS-Lindgren o󰀨ers a line of ferrite loaded cables for this

application. Lightweight RF cabling should be used and properly supported to avoid putting

unnecessary load on the SMA connector of the antenna. Route cabling away from the

antenna along the antenna axis for as far away as is practical to minimize the interaction of

the cable with the antenna and to avoid distortion of the antenna pattern.

Before placing into

operation, follow the

safety information in the

ETS-Lindgren Product

Information Bulletin

included with your

shipment.

5.0 Operation

It is recommended that a 10 dB pad/attenuator be used at the input end of the Model 3126C

Series Sleeve Dipole to minimize standing waves on the transmit cable. This is especially

important for frequencies where the input VSWR is greater than 1.2:1.

The electric ﬁeld of the antenna is polarized parallel to the antenna axis. The

speciﬁed antenna gain is realized along the plane perpendicular to the antenna

axis and centered at the center of the dipole elements. The center of the dipole

elements (bore sight location) is indicated by a line marked on the dipole,

approximately 5.9 inches (15 cm) from the base (connector end) of the antenna

housing.

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