ETS-Lindgren 3303 User Manual

Model 3303

Rod Antenna

User Manual

Model 3303 Antenna Base

ETS-Lindgren L.P. reserves the right to make changes to any product described herein in order to improve function, design, or for any other reason. Nothing contained herein shall constitute ETS-Lindgren L.P. assuming any liability whatsoever arising out of the application or use of any product or circuit described herein. ETS-Lindgren L.P. does not convey any license under its patent rights or the rights of others.

Trademarks used in this document: The ETS-Lindgren logo is a trademark of ETS-Lindgren L.P.

Revision Record | MANUAL 3303 | Part #399047, Rev. D

Revision Description Date

A Initial Release October, 1993

B Added Model 3305 Kit content October, 2002

C Rebrand September, 2010

D Updated monopole rod element

information

ii |

July, 2011

Table of Contents

Notes, Cautions, and Warnings ............................................... iv

1.0 Introduction .......................................................................... 5

Standard Configuration .................................................................................. 6

Antenna Base ........................................................................................ 6

Counterpoise ......................................................................................... 6

Monopole Element ................................................................................. 6

Model 3305 E-Field Shielding Effectiveness Test Kit .................................... 8

Tripod Options ............................................................................................... 8

ETS-Lindgren Product Information Bulletin ................................................. 10

2.0 Maintenance ....................................................................... 11

Annual Calibration ....................................................................................... 11

Replacement and Optional Parts ................................................................. 12

Service Procedures ..................................................................................... 12

3.0 Specifications ..................................................................... 13

Electrical Specifications ............................................................................... 13

Physical Specifications ................................................................................ 13

4.0 Assembly, Mounting, and Operation ............................... 15

Assembly ..................................................................................................... 16

Attach Counterpoise ............................................................................ 16

Assemble / Attach Rod Element .......................................................... 17

Mounting ...................................................................................................... 18

4-TR Tripod .......................................................................................... 18

7-TR and Mast Mounting Options ........................................................ 18

2x2 Boom Mounting Options ............................................................... 19

Operation ..................................................................................................... 20

5.0 Model 3305 Suggested Test Setup ................................... 21

Measuring Electronic Field Shielding Effectiveness .................................... 21

Suggested Test Setup Diagram ................................................................... 22

Electric Field Shielding Effectiveness Measurement ................................... 24

6.0 Typical Data ........................................................................ 27

Appendix A: Warranty ............................................................. 29

| iii

Notes, Cautions, and Warnings

Note: Denotes helpful information intended to

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

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.

iv |

1.0 Introduction

The ETS-Lindgren Model 3303 Rod Antenna is a passive broadband electric field monopole transmitting antenna, and may also be used as a passive receive antenna. The Model 3303 has a frequency range of 1 kHz to 30 MHz and features manual band switching between

0.001-5 MHz and 5-30 MHz. The maximum power handled by the Model 3303 is 1 kW.

The base of the Model 3303 is constructed of aluminum, providing strength and portability. The 1/4–20 threaded receptacle in the base is compatible with ETS-Lindgren tripods and most others. The housing contains the band-switching mechanism and a female Type N connector.

Each Model 3303 is individually calibrated per (ESCM) or IEEE Std 291 using NIST traceable equipment. Actual individual calibration factors and a signed Certificate of Calibration Conformance are included with each antenna. By knowing the actual antenna factors and performance characteristics instead of typical data, you can more accurately calculate the field strength in your tests.

Model 3303 Antenna Base and

Introduction | 5

Monopole Element

Standard Configuration

ANTENNA BASE

• Type N connector

• Built-in manual band switch

• Drilled to accept ETS-Lindgren or other tripod

mount with standard 1/4–20 threads

COUNTERPOISE

60 centimeters (not shown)

MONOPOLE ELEMENT

The monopole element includes these parts for assembly:

• (1) 116474 Rod section without antenna adapter

• (1) 116474 Rod section with antenna adapter

• (1) 116862 Center section

The monopole may be assembled as follows:

• For a finished length of 40.95 in (1040 mm)—Assemble all parts, including the 116862 center section.

• For a finished length of 39.37 in (1000 mm)—Assemble all parts except for the 116862 center section.

See page 17 for the steps to assemble the monopole.

6 | Introduction

Introduction | 7

Model 3305 E-Field Shielding Effectiveness Test Kit

The ETS-Lindgren Model 3305 E-Field Shielding Effectiveness Test Kit is a set that includes these antennas:

• Model 3303

• Model 3301C Active Monopole Antenna

Together these antennas are designed to measure shielding effectiveness per IEEE 299, MIL-STD-285, and NSA 65-6. The set operates from 1 kHz to 30 MHz. The maximum power required to measure the attenuation per NSA 65-6 is 80 watts.

Additional information about the Model 3301C can be found at

www.ets-lindgren.com/3301C

Model 3303 and Model 3301C are also sold separately.

Tripod Options

ETS-Lindgren offers the following non-metallic, non-reflective tripods for use at both indoor and outdoor EMC test sites.

8 | Introduction

• 4-TR Tripod—Constructed of linen phenolic and delrin, designed with an adjustable center post for precise height adjustments. Maximum height is 2.0 m (80.0 in), and minimum height is 94 cm (37.0 in). This tripod can support up to an 11.8 kg (26.0 lb) load.

• 7-TR Tripod—Constructed of PVC and fiberglass components, providing increased stability for physically large antennas. The unique design allows for quick assembly, disassembly, and convenient storage. Allows several different configurations, including options for manual or pneumatic polarization. Quick height adjustment and locking wheels provide ease of use during testing. Maximum height is 2.17 m (85.8 in), with a minimum height of 0.8 m (31.8 in). This tripod can support a

13.5 kg (30 lb) load.

Introduction | 9

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