Vislink ARTR Manuel utilisateur

Vislink, Waterside House, Earls Colne Business Park, Colchester, Essex, CO6 2NS, UK

Telephone: +44 (0)1442 431300 ● Facsimile: +44 (0) 1494 775356 ● Email: sales@vislink.com ● 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

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

Version

Date

Modification

09/2014

First release of document.

05/2016

Template update, updated look and feel and rebrand.

No technical changes.

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 
 .......................................................................................................1 
 ..................................................................................................................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

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.

Issue No: C Page: 2

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

10W

30W

OMNI

2.5

1.5

2.5

HELIX

100

5.6

15.5

PARABOLIC DISH

3,162

22.5

MINIMUM SAFE DISTANCE (METRES)

PT. GR

4.w

Issue No: C Page: 3

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.

Issue No: C Page: 4

This page is intentionally unused.

Issue No: C Page: 5

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.

Issue No: C Page: 6

Figure 2-1 ARTR Overview

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