ETS-Lindgren 3110C User manual

Model 3110C
Biconical Antenna
User Manual

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ETS-Lindgren Inc. 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 Inc. assuming any liability
whatsoever arising out of the application or use of any product or circuit
described herein. ETS-Lindgren Inc. does not convey any license under its
patent rights or the rights of others.
© Copyright 2000–2014 by ETS-Lindgren Inc. All Rights Reserved. No part
of this 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 trademark of
ETS-Lindgren Inc.
Revision Record | MANUAL 3110 | Part #399108, Rev. H
Revision
Description
Date
A–F
Initial Release; Updates
November, 2000–
March, 2002
G
Updated content to Model 3110C;
re-branding changes
May, 2008
H
Added optional 3110CP with
portable elements; updated
boom options
April, 2014

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Table of Contents
Notes, Cautions, and Warnings................................................v
1.0 Introduction..........................................................................7
Optional Items ............................................................................................ 7
Model 3110CP—Portable Elements.................................................... 7
Tripod Options.................................................................................... 8
ETS-Lindgren Product Information Bulletin ................................................. 9
2.0 Maintenance .......................................................................11
Annual Calibration .................................................................................... 11
Replacement and Optional Parts .............................................................. 11
Service Procedures .................................................................................. 12
3.0 Specifications.....................................................................13
Electrical Specifications............................................................................ 13
Physical Specifications ............................................................................. 13
Model 3110CP (With Portable Elements).......................................... 14
4.0 Assembly Instructions ......................................................15
5.0 Mounting Instructions .......................................................17
Using Included Mounting Adapters ........................................................... 17
Using the Stinger Mount ........................................................................... 19
Additional Mounting Options..................................................................... 20
4-TR Mounting Options..................................................................... 20
7-TR and Mast Mounting Options...................................................... 21
2x2 Boom Mounting Options............................................................. 22
6.0 Application .........................................................................23
7.0 Typical Data........................................................................25
Antenna Factor......................................................................................... 25
Gain.......................................................................................................... 26
VSWR....................................................................................................... 27
Half-Power Beamwidth ............................................................................. 28
Appendix A: Warranty ............................................................. 29

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

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Introduction | 7
1.0 Introduction
The ETS-Lindgren Model 3110C Biconical Antenna is specifically designed for
radiated emissions testing. This high-performance receive-only antenna operates
within a frequency range of 30 MHz to 300 MHz.
The biconical elements are made from aluminum rods and are welded into a
fixed assembly. The elements mount onto a balun network which is fabricated of
aluminum and the necessary impedance-matching components. The lightweight
construction provides for ease in portability and storage.
A variety of mounting options are available for the Model 3110C. For information,
see Mounting Instructions on page 17.
Optional Items
MODEL 3110CP—PORTABLE ELEMENTS
Collapsible folding elements are available, making the Model 3110C portable and
ideal for field use. Both the standard rigid and optional folding elements attach to
the balun using screw mounts. This makes changing between the two types of
elements quick and easy.

8 | Introduction
TRIPOD OPTIONS
ETS-Lindgren offers the following nonmetallic, non-reflective tripods for use at
both indoor and outdoor EMC test sites.
Model 4-TR—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.
Model 7-TR—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
ETS-Lindgren Product Information Bulletin
See the ETS-Lindgren Product Information Bulletin included with your shipment
for the following:
Warranty information
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

10 | Introduction
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Maintenance | 11
2.0 Maintenance
Before performing any maintenance, follow
the safety information in the ETS-Lindgren
Product Information Bulletin included with
your shipment.
WARRANTY
Maintenance of the Model 3110C is limited
to external components such as cables or
connectors.
If you have any questions concerning
maintenance, contact ETS-Lindgren
Customer Service.
Annual Calibration
See the Product Information Bulletin included with your shipment for information
on ETS-Lindgren calibration services.
Replacement and Optional Parts
Following are the part numbers for ordering replacement or optional parts for the
Model 3110C Biconical Antenna.
Part Description
Part Number
Element, Fixed Bicon with Cross Arm (2)
101808
Clamp Block
102108
Support Base
101942B
Support Rod White
100733
Model 3110CP (with portable elements)
3110CP
For additional/optional mounting hardware, see Additional Mounting
Options on page 20.

12 | Maintenance
Service Procedures
For the steps to return a system or system component to ETS-Lindgren for
service, see the Product Information Bulletin included with your shipment.

Specifications | 13
3.0 Specifications
Electrical Specifications
Frequency Range:
30 MHz–300 MHz
VSWR Ratio (Average):
2.0:1
Maximum Continuous Power:
250 mW
Peak Power:
NA
Impedance:
50 Ω
Connector:
Type N female
Physical Specifications
Width:
132.1 cm
52.0 in
Depth:
55.9 cm
22.0 in
Diameter:
52.0 cm
20.5 in
Weight:
2.7 kg
6.0 lb
ETS-Lindgren recommends using a 6 dB pad attached to the end of
the antenna; otherwise, high VSWR may occur.

14 | Specifications
MODEL 3110CP (WITH PORTABLE ELEMENTS)
One element is shown for illustrative purposes only; all specifications
are based on the balun plus both elements.
Width (includes elements and balun):
120.9 cm (47.6 in)
Diameter:
64.1 cm (25.3 in)
Weight (includes elements and balun):
1.9 kg (4.2 lb)

Assembly Instructions | 15
4.0 Assembly Instructions
Before connecting any components, follow the
safety information in the ETS-Lindgren
Product Information Bulletin included with your
shipment.
The Model 3110C Biconical Antenna is shipped unassembled, and includes
these parts:
Balun –includes attached stinger mount
Biconical element (2)
Belleville washer (2)
Clamp block
Support rod and support base

16 | Assembly Instructions
To assemble the Model 3110C:
1. Slide a belleville washer onto the threaded screw end of one of the
biconical elements.
2. Line up the screw threads with the receptacle hole on the balun and
turn the biconical element until it is firmly secured in the balun.
Do not cross thread this connection or
permanent damage to the joint could occur.
3. Repeat step 1 and step 2 using the remaining washer and biconical
element.

Mounting Instructions | 17
5.0 Mounting Instructions
Before connecting any components, follow the
safety information in the ETS-Lindgren
Product Information Bulletin included with your
shipment.
The Model 3110C is a precision measurement
device. Handle with care.
Using Included Mounting Adapters
The Model 3110C Biconical Antenna ships with these mounting adapters:
102108 Clamp Block—Uses standard
7/8–14 threads and comes with a 1/4–20
thread adapter for mounting to an
ETS-Lindgren tripod or most other
tripods.
101942B Support Base
100733 Support Rod

18 | Mounting Instructions
To use these adapters to mount the Model 3110C to a 4-TR tripod:
Shown mounted onto a 4-TR with clamp block,
support base, and support rod
1. Assemble the clamp block, support base, and support rod, and attach
the support base to the 4-TR tripod.
2. Unscrew the clamp block latch and open the top.
3. Insert the balun into the clamp block and close the top over the balun.
4. Move the latch to the closed position and tighten so the balun is held
securely.
5. Attach the cable to the output connector on the antenna.

Mounting Instructions | 19
Using the Stinger Mount
The stinger on the Model 3110C enables you to mount to antenna directly to an
ETS-Lindgren 7-TR Tripod Positioner or mast.
Additional hardware is required to use the stinger to mount the
Model 3110C to a mast. For information on ordering optional mounting
hardware, contact the ETS-Lindgren Sales Department.
Shown stinger-mounted onto a 7-TR
Do not use the stinger to mount the Model 3110C onto a 4-TR tripod.

20 | Mounting Instructions
Additional Mounting Options
4-TR MOUNTING OPTIONS
Following are additional options for mounting the Model 3110C onto an
ETS-Lindgren 4-TR tripod. Contact the ETS-Lindgren Sales Department for
information on ordering optional mounting hardware.