Vislink ARTR User manual

Vislink, Waterside House, Earls Colne Business Park, Colchester, Essex, CO6 2NS, UK
Telephone: [phone] ● Facsimile: [phone] ● Email: [e-mail] ● Website: www.vislink.com
Company Registered in England & Wales no. 10523708 ● VAT registration no. GB 260 012 169
Registered Office: Waterside House, Earls Colne Business Park, Colchester, Essex, CO6 2NS, UK

Issue No: C Page: ii
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
The information contained in this manual remains the property of Vislink and may not be
used, disclosed or reproduced in any other form whatsoever without the prior written
permission of Vislink.
Vislink reserves the right to alter the equipment and specification appertaining to the
equipment described in this manual without notification.
This document is supplied on the express terms that it is to be treated as confidential and
that it may not be copied, used or disclosed to others for any purpose except as authorized
by Vislink.
NOTE: Notes are used to convey additional information.
CAUTION: Cautionary notes are given where potential equipment damage could occur.
WARNING: Warnings are shown where there is potential for personal danger or death. This
warning should be read and understood before attempting to carry out any
work on any equipment attached or related to the equipment in use. The
danger is real and not understanding the warning could lead to injury, harm or
potential death.

Issue No: C Page: iii
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Version
Date
Modification
A
09/2014
First release of document.
B
05/2016
Template update, updated look and feel and rebrand.
No technical changes.
C
11/2017
Added new Figure 2-3 to included extended length version actuator arm
specification ARTR-ASSY-7011.
Updated company information.
Included standard safety section.

Issue No: C Page: iv
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
................................................................................................... 1
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..................................................................................................................1
..........................................................................................................................2
............................................................................................3
2. Introduction .............................................................................................................. 5
3. Overview (Cover Removed) ....................................................................................... 9
4. Terminal Box ........................................................................................................... 11
5. Approval.................................................................................................................. 19
5.1. Interface Loads and Safety.......................................................................................................19
6. Antenna Installation ................................................................................................ 21
6.1. Installation Procedures ............................................................................................................21
6.2. Operating Procedures ..............................................................................................................21
6.3. Preventative Maintenance.......................................................................................................21
6.4. Corrective Maintenance...........................................................................................................21
7. Safety Features and Procedures............................................................................... 23
7.1. Handling the Assembly.............................................................................................................23
Design Change Instruction Sheet ............................................................... 25
Connector Pinouts ..................................................................................... 31
ACTUATOR UNIT.......................................................................................................................31
HAND CONTROL UNIT ..............................................................................................................31
HAND CONTROL WIRING .........................................................................................................32
List of Abbreviations.................................................................................. 33
Figure 2-1 ARTR Overview.............................................................................................................. 6
Figure 2-2 ARTR Standard Length Version Specification................................................................ 7
Figure 2-3 ARTR Extended Length/Inverted Version Specification................................................ 8
Figure 3-1 ARTR Overview –Cover Removed ................................................................................ 9
Figure 3-2 AARTR-ASSY-5003 Actuator Arm Remote Control Unit .............................................. 10
Figure 3-3 ARTR-ASSY-5002 Terminal Box.................................................................................... 10
Figure 4-1 ARTR - Remote Unit Cable Assembly .......................................................................... 12
Figure 4-2 ARTR - Remote Unit Cable Assembly .......................................................................... 13
Figure 4-3 ARTR - Remote Power Cable Assembly....................................................................... 14
Figure 4-4 Actuator Sensor Cable Assembly ................................................................................ 15
Figure 4-5 Actuator Feed Cable Assembly.................................................................................... 16
Figure 4-6 ARTR-ASSY-5004 Cover Assembly ............................................................................... 17
Figure 7-1 Assembly Handling Diagram........................................................................................ 23
Figure B-1 Hand Control Wiring Diagram..................................................................................... 32
Table B-1 Actuator Unit Pinout Table.......................................................................................... 31
Table B-2 Hand Control Unit Pinout Table .................................................................................. 31

Issue No: C Page: 1
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
To ensure awareness of potential hazards, all personnel concerned with the operation or
maintenance of the equipment must study the information that follows, together with local site
regulations.
WARNING: RF Power Hazard: High levels of RF power are present in the unit. Exposure to RF or
microwave power can cause burns and may be harmful to health. Switch off supplies
before removing covers or disconnecting any RF cables, and before inspecting
damaged cables or antennas.
WARNING: Avoid standing in front of high gain antennas (such as a dish) and never look into the
open end of a waveguide or cable where RF power may be present.
CAUTION: Users are strongly recommended to return any equipment that requires RF servicing to
Vislink.
WARNING- GaAs / BeO Hazard : Certain components inside the equipment contain Gallium
Arsenide and Beryllium Oxide that are toxic substances. Whilst safe to handle under
normal circumstances, individual components must not be cut, broken apart,
incinerated or chemically processed. In the case of Beryllium Oxide, a white ceramic
material, the principal hazard is from the dust or fumes, which are carcinogenic if
ingested, inhaled or entering damaged skin.
Please consult your local authority before disposing of these components.
CAUTION: Tantalum Capacitors: When subjected to reverse or excess forward voltage, ripple
current or temperature these components may rupture and could potentially cause
personal injury.
CAUTION: This system contains MOS devices. Electro-Static Discharge (ESD) precautions should be
employed to prevent accidental damage.
WARNING: DO NOT incinerate batteries. Exposing batteries to naked flames or extreme heat
sources can cause them to rupture or explode.
WARNING: DO NOT dispose of any of the supplied equipment as household waste. The supplied
equipment is not biodegradable in landfill sites. For safe disposal of the supplied
equipment, take it to your local (council/authority) environmental waste site. For
details, contact your local authority/recycling center.
NOTE: In Europe dispose of all equipment in accordance with the European Environmental
directive.

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Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Exposure to Non-Ionizing (RF) Radiation/Safe Working Distances
The safe working distance from a transmitting antenna may be calculated from the relationship:
D =
in which: D = safe working distance (meters)
PT = transmitter or combiner power output (watts)
GR = antenna gain ratio = anti log (gain dBi ÷10)
w = Maximum allowed power density (watts/square meter)
The RF power density value is determined by reference to safety guidelines for exposure of the
human body to non-ionizing radiation. It is important to note that the guidelines adopted differ
throughout the world and are from time-to-time re-issued with revised guidelines. For Vislink
use, a maximum power density limit (w) of 1w/m² is to be applied when calculating minimum safe
working distances. Appendix A refers.
WARNING: Any transmitting equipment, radiating power at frequencies of 100 kHz and higher,
has the potential to produce thermal and athermal effects upon the human body.
To be safe:
Operators should not stand or walk in front of any antenna, nor should they allow anyone
else to do so.
Operators should not operate any RF transmitter or power amplifier with any of its covers
removed, nor should they allow anyone else to do so.
Worked examples:
Antenna
Transmitter Power
Type
Gain (dBi)
Gain Ratio
2W
4W
10W
30W
OMNI
4
2.5
1
1
1.5
2.5
HELIX
20
100
4
5.6
9
15.5
PARABOLIC DISH
35
3,162
22.5
32
50
87
MINIMUM SAFE DISTANCE (METRES)
PT. GR
4.w

Issue No: C Page: 3
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
The RF Radiation Power Density limit figure recommended by Vislink is based upon guideline
levels published in:
a. IEEE standard C95.1 1999 - IEEE Standard for Safety Levels with respect to Human
Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz.
Guidelines for Limiting Exposure to Time-varying Electric, Magnetic & Electromagnetic Fields
(up to 300 GHz) published in 1998 by the Secretariat of the International Commission on
Non-Ionizing Radiation Protection (ICNIRP).
Both documents define guideline RF power density limits for "Controlled" and "Uncontrolled"
environments. An uncontrolled environment is defined as one in which the person subjected to
the RF radiation may be unaware of and has no control over the radiation energy received. The
uncontrolled environment conditions can arise, even in the best regulated operations and for this
reason the limits defined for the uncontrolled environment have been assumed for the Vislink
recommended limit.
Documents a) and b) also show the RF power density guidelines to be frequency dependent.
Different power density / frequency characteristics are presented in the two documents. To avoid
complexity and to avoid areas of uncertainty, Vislink recommends the use of a single power
density limit across the frequency range 100 kHz to 300 GHz. The 1w/m² power density limit we
recommend satisfies the most stringent of the guidelines published to date.
NOTE: The IICNIRP document is freely available for download from the internet at
www.icnirp.de/emfgdl (PDF file) the IEEE standard is available on loan from Essex County
Library on payment of a search fee.

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The Antenna Retractor Unit (ARTU) is an electromechanical device attached typically to the skid of
a helicopter, and is designed specifically to lower and retract a microwave antenna. Various
microwave antennae maybe attached to the ARTU. The antenna is stowed in the horizontal
position on the inside of the skid of the helicopter and is lowered to a vertical position below the
skid for operational use when the helicopter is airborne.
The ARTU was designed in accordance with British Civil Airworthiness Requirements (BCAR) to
operate at speeds up to 120knots with 100mm diameter and 200mm long antenna lowered.
NOTE: The maximum operating speed of the ARTU is dependent on the type of microwave
antenna fitted. The maximum operating speed of the ARTU must be confirmed with the
manufacturer if a larger antenna is intended to be used (See appropriate DCIS).
The ARTU has been fitted to the following aircraft/helicopters:
AS 350
AS 355
The antenna retractor unit is strapped to the helicopter’s skid by means of stainless steel, band
clamps secured by means of locking nuts. Refer to Figure 2-1. The retractor unit weighs 5.5kgs
(12.1lbs) excluding the weight of the microwave antenna, looms and remote control.

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Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 2-1 ARTR Overview

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Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 2-2 ARTR Standard Length Version Specification

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Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 2-3 ARTR Extended Length/Inverted Version Specification

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Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 3-1 ARTR Overview –Cover Removed

Issue No: C Page: 10
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 3-2 AARTR-ASSY-5003 Actuator Arm Remote Control Unit
Figure 3-3 ARTR-ASSY-5002 Terminal Box

Issue No: C Page: 11
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Chemical testing
Bladder Material:
Hydrin 50
ASTM D-2000 classification CH, DK, DJ
Retractor Cover:
Carbon Fibre Pre-Preg Resin MTM58B
Service Temperature up to 120°C
MTM58B is self-extinguishing when tested to FMV5302/ISO3795

Issue No: C Page: 12
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 4-1 ARTR - Remote Unit Cable Assembly

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Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 4-2 ARTR - Remote Unit Cable Assembly

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Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 4-3 ARTR - Remote Power Cable Assembly

Issue No: C Page: 15
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 4-4 Actuator Sensor Cable Assembly

Issue No: C Page: 16
Ref: ARTR-ASUM-7001 Copyright © 2017 IMT Ltd, trading as Vislink
Figure 4-5 Actuator Feed Cable Assembly
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