ETS-Lindgren 2188 User Manual

Turntable

Model 2188

1.2m, 1.5m and 2.0m

Users Manual

©ETS-Lindgren—January, 2006 Rev. B—Part#399771

Model 2188 Turntable

ETS-Lindgren 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.

©Copyright 2006 by ETS-Lindgren L.P. All Rights Reserved. No part of this document may be
copied by any means without written permission from ETS-Lindgren L.P.

Revision Description Date

A Initial Release November, 2005
B Added two meter turntable information, updated

January, 2006

illustrations and drawings

E-Mail & Internet Addresses

[e-mail]

http://www.ets-lindgren.com

USA

1301 Arrow Point Drive, Cedar Park, TX 78613 USA

P O Box 80589, Austin, TX 78708-0589 USA

Tel. [phone]
Fax [phone]

Finland

Mekaanikontie 1, 27510, Eura, Finland

Tel. [phone]

Fax [phone]

Japan

4-2-6, Kohinata

Bunkyo-ku, Tokyo 112-0006 Japan

Tel. [phone]
Fax [phone]

China

1917-1918 Xue Zhixuan Building

No. 16 Xue Qing Road

Haidian District

Beijing Postcode: 100083 China

Tel. [phone]
Fax [phone]

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©ETS-Lindgren—January, 2006

Rev. B—P#399771

Model 2188 Turntable

Table of Contents

1. Introduction.................................................................................................................................. 7

1.1. Standard Configuration......................................................................................................... 7

1.2. Model 2188 Options..............................................................................................................8

1.2.1. Model 2090 Series Positioning Controller...................................................................... 8

1.2.2. Additional Fiber Optic Cable .......................................................................................... 9

2. Getting Started........................................................................................................................... 11

2.1. Unpacking and Acceptance................................................................................................ 11

2.2. Electrical Specifications......................................................................................................11

2.2.1........................................................................................................................................ 11

2.2.2. Mechanical ...................................................................................................................12

2.3. Turntable Installation Considerations ................................................................................. 12

2.3.1. Conduit......................................................................................................................... 12

2.3.2. Electrical Considerations.............................................................................................. 12

2.3.3. Access.......................................................................................................................... 12

3. Installation.................................................................................................................................. 13

3.1. Tools Required.................................................................................................................... 13

3.2. Unpacking........................................................................................................................... 14

3.3. Positioning the Turntable.................................................................................................... 14

3.4. Installing Anchor Plates ...................................................................................................... 16

3.5. Raised Panel Floor Flange Installation............................................................................... 17

3.6. Floor Flange Mounting in a Concrete Pit............................................................................ 18

3.7. Motorbase Attachment........................................................................................................19

3.8. Final Leveling of the Table.................................................................................................. 20

3.9. Application of Conductive Grease ...................................................................................... 20

4. Electrical Installation.................................................................................................................. 21

5. Operation................................................................................................................................... 23

5.1. Editing Positioning Controller Configuration Parameters ................................................... 23

5.2. Setting Travel Limits ........................................................................................................... 24

5.3. Turntable Encoder Calibration............................................................................................ 25

5.3.2. Turntable Calibration Example..................................................................................... 26

5.4. Changing Rotation Speed................................................................................................... 27

5.5. Variable Speed Settings ..................................................................................................... 27

5.6. Speed Selection..................................................................................................................28

5.7. GPIB Commands................................................................................................................ 29

6. Infrared Controller...................................................................................................................... 31

7. Recommended Maintenance..................................................................................................... 33

7.1. Routine Maintenance.......................................................................................................... 33

7.2. Bi-Annual Maintenance.......................................................................................................33

7.3. Annual Maintenance........................................................................................................... 34

8. Warranty.................................................................................................................................... 37

9. Addendum A: Drawings............................................................................................................39

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Model 2188 Turntable

SAFETY SYMBOL DEFINITIONS

NOTICE: This product and related documentation must be reviewed for familiarization

with safety markings and instructions prior to operation of the product.

REFER TO MANUAL—When the product is marked with
this symbol refer to the instruction manual for additional

!

OR

OR

CAUTION

WARNING

information. If the instruction manual has been misplaced,
go to www.ets-lindgren.com
contact ETS-Lindgren customer service.
HIGH VOLTAGE—Indicates the presence of hazardous
voltage. Unsafe practice could result in several personal
injury or death.

PROTECTIVE EARTH GROUND (SAFETY GROUND)—
Indicates protective earth terminal. Uninterruptible safety
earth ground from the main power source to the product
input wiring terminals, power cord or supplied power cord
set shall be provided.
CAUTION—Denotes a hazard. Failure to follow
instructions could result in minor personal injury and/or
property damage. Text that follows the symbol will provide
proper procedures.
WARNING—Denotes a hazard. Failure to follow instruction
could result in SEVERE personal injury and/or property
damage. Text that follows the symbol will provide proper
procedures.

for downloadable files or

GENERAL SAFETY CONSIDERATIONS/PRECAUTIONS

Read this manual completely before beginning the
installation of the turntable. Refer to drawings at the rear of
the manual and the “Tools Required” list included prior to

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beginning installation. This equipment should be installed
and operated only by qualified personnel.
The electrical installation of this product should be
accomplished by an individual who is authorized to so do by
the appropriate local authority. The installation should be in
compliance with local electrical safety codes.
BEFORE POWER IS APPLIED TO THIS INSTRUMENT,
GROUND IT PROPERLY through the protective conductor
of the AC power cable to a power source provided with
protective earth contact. Any interruption of the protective
(grounding) conductor, inside or outside of the instrument,
or disconnection of the protective earth terminal could result
in personal injury.

©ETS-Lindgren—January, 2006

Rev. B—P#399771

Model 2188 Turntable

GENERAL SAFETY CONSIDERATIONS/PRECAUTIONS (continued)

BEFORE SERVICING: CONTACT ETS-LINDGREN
(+1.512.531.6400)—servicing or modifying the unit without
ETS-Lindgren authorization may void your warranty. If an

WARRAN TY

attempt to service the unit must be made, disconnect all
electrical power prior to beginning. Voltages exist at many
points within the instrument that could, if contacted, cause
personal injury. Only trained service personnel should
perform adjustments and/or service procedures upon this
instrument. Capacitors inside this instrument may still be

CHARGED even when the instrument is disconnected from
the power source.

WARRAN TY

Do not make any modifications to this unit without
consulting the factory directly.

ONLY QUALIFIED PERSONNEL should operate or service
this equipment.

STAY CLEAR of moving components during operation of
equipment. Do not operate the turntable while someone is
physically on the turntable top.

Do not, at any time, place hands or feet in the vicinity of the
drive pinion on the turntable.

Regularly inspect all equipment and conduct scheduled
maintenance in accordance with the factory

WARRAN TY

recommendations provided.

Only use replacement parts and fasteners ordered directly
from the factory.

©ETS-Lindgren—January, 2006
Rev. B—P#399771

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©ETS-Lindgren—January, 2006

Rev. B—P#399771

Model 2188 Turntable

1. Introduction

The ETS-Lindgren Model 2188 is an electric-powered, variable-speed
turntable platform system designed for use with an EMCO Model 2090
series positioning controller to perform EMI compliance testing. The Model
2188 is available in 1.2-meter, 1.5-meter and 2.0-meter diameters. The
turntable is ideal for installations in new or existing test locations where pit
excavation is not an option or must be shallow.

The top of the turntable is conductive with a continuous ground brush to
electrically couple it to the ground plane. The ground brushes are attached
directly to the chamber floor via the floor flange and are in continuous
contact with the turntable top. The brushes point downward from the floor
flange. .

The drive motor and gearing are located beneath the platform. The Model
2188 turntable is powered by an electric motor through a worm gear box
with a chain and sprocket final drive. The top of the turntable is removable
to provide easy access in the event that service is required. The
electronics are located in a shielded enclosure. Signal I/O is via fiber-optic
cable.

To prevent over-travel of the turntable in either direction of movement,
“hard” limits are provided in the form of pins that actuate switches located
below the tabletop. These pins allow limits to be set and allow as much as
two full rotations. Rotation speed can be varied from the front panel of the
controller or through the IEEE-488 interface bus.

1.1. Standard Configuration

• Turntable Assembly

• Single-phase electric drive (208-230 VAC 50/60 Hz)

• Variable speed drive

• Conductive top

• Continuous rotation

• One (1) ten meter fiber-optic control cable

• Fiber optic shield penetration kit

• Two (2) fiber optic feed-thrus

• One (1) three meter fiber optic control cable

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Model 2188 Turntable

1.2. Model 2188 Options

1.2.1. Model 2090 Series Positioning Controller

The Model 2090 Series Multi-Device Positioning Controller is
designed for use with ETS-Lindgren positioning devices
such as antenna towers, turntables, reverberation paddles,
multi-axis positioners, etc. to accomplish a variety of tests for
EMC compliance, antenna pattern measurements, and
more.

The Controller allows the user to synchronize the
simultaneous, yet independent movement of two primary
devices such as towers or turntables in either manual or
remote GPIB modes while controlling the on/off operation of
up to four auxiliary devices. The unit includes a GPIB bus
and is compatible with most popular software. Firmware
revision 3.11 or higher required.

Each primary device is interfaced to the controller through a
bi-directional fiber optic interface using a proprietary
command protocol. Auxiliary devices use a single fiber optic
signal to control simple on/off operation. The fiber optic
control lines that attach devices to the unit eliminate
extraneous RF interference signals that can normally be
conducted through wire signal cables.

The front panel of the Model 2090 provides the interface for
two separate and complete device controllers, each with
identical displays and function keys. The function keys let
the user configure device specific parameters, adjust limit
and position settings and control device motion. Numeric
displays and status indicators are provided for each device
interface to show positioning and operational information as
well as device parameter settings. In addition to the two
primary device interfaces, an auxiliary control interface for
four auxiliary devices is present. This interface provides
keys and indicators to allow the user to manually toggle the
auxiliary devices on or off.

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©ETS-Lindgren—January, 2006

Rev. B—P#399771

Model 2188 Turntable

Control of all devices may be accomplished either in the
manual or remote modes through the use of the GPIB (IEEE
488 standard interface bus) port located on the rear panel.
Each primary device is identified by a unique GPIB address
that the controller recognizes, allowing each positioning
device to function as a separate device on the GPIB bus.

1.2.2. Additional Fiber Optic Cable

Various lengths of fiber optic cable may be ordered. Specify
additional cable lengths at the time of order placement.
Cables are terminated with type ST connectors.

©ETS-Lindgren—January, 2006
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©ETS-Lindgren—January, 2006

Rev. B—P#399771

Model 2188 Turntable

2. Getting Started

2.1. Unpacking and Acceptance

Step 1. Upon delivery of your order, inspect the shipping
container(s) for evidence of damage. Record any damage on the
delivery receipt before signing. In case of concealed damage or
loss, retain the packing materials for inspection by the carrier.

Step 2. Once all of the materials are removed from the container
by a qualified installer, check all materials against the packing list to
verify that the equipment received matches what was ordered. If
you find any discrepancies, note them and call ETS-Lindgren
Customer Service (+1.512.531.6400) for further instructions.

Ensure that you are satisfied with the contents of your order and
the condition of your equipment prior to installation.

Pre-planning is essential for a successful installation. Be sure to
discuss your requirements with your sales representative and
request dimensional drawings prior to construction of your site.

2.2. Electrical Specifications

Nominal AC Voltage 230 VAC
Input Frequency 50/60 Hz
Phase Single Phase
AMP 2.0
RPM 0.5/2.0 variable

Table 1: Electrical Specifications

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Model 2188 Turntable

2.2.1. Mechanical

Diameter 1.2 meter 1.5 meter 2.0 meter
Height
(Minimum)
Distributed
Load
Rating*

*Distributed Load Rating is based on an evenly distributed
load to each section. Point loads under 0.37 sq. m
(4 sq. ft) should not exceed 500 kg (1,100 lb.). Nothing over
400 kg (882 lb.) may be applied to a 45-degree segment
outboard of the casters.

16.51 cm
(6.12 in.)
500 kg
(1,100 lb)

Table 2: Mechanical Parameters

16.51 cm
(6.12 in.)
1,000 kg
(2,200 lb)

16.51 cm
(6.12 in.)
1,000 kg
(2,200 lb)

2.3. Turntable Installation Considerations

2.3.1. Conduit

Power and signal line paths must be planned in advance.
Power and signal lines must never run through the same
conduit. Conduit must be in place before pouring concrete
or installing the ground plane. Consider the size of the cable
bundle when selecting conduit diameter.

2.3.2. Electrical Considerations

A qualified and licensed electrical contractor must be used to
install power lines, and the installation should comply with all
applicable regulatory agencies. A dedicated circuit is
required with the shortest distance possible between the
power source and the turntable.

2.3.3. Access

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An access area underneath the turntable is advisable for
large diameter installations. A service switch is necessary to
deactivate the turntable during service.

©ETS-Lindgren—January, 2006

Rev. B—P#399771