Zenitel Vingtor vss Supplement

INSTALLATION & SERVICE MANUAL

VSS

Sound Reception System

A100K10874

Installation & Service manual VSS system

A100K10874 i

Contents

1. Introduction.............................................................................................1

2. General Description............................................................................2

3. Installation...............................................................................................3

3. 1 Main Unit VSS-111 .................................................................................................. 3

3.2. VSS-222 microphones .............................................................................................. 3

4. Setting & Adjustment.........................................................................4

4.1 General....................................................................................................................... 4

4.2 Microphone adjustment ............................................................................................. 4

4.3 Remote Muting when using own typhoon................................................................. 4

4.4 Adjustment of Squelch function ................................................................................ 4

5. Operation of the system...................................................................5

6. Specifications........................................................................................5

7. Datasheet, Electrical & Mechanical drawings........................6

Installation & Service manual VSS system

A100K10874 1

1. Introduction

About this document

This document is intended to give relevant information on the system features, available

equipment, typical configurations, simplified wiring and technical data for the concept.

Publication Log

Title: Sound Reception System VSS

Installation & Service Manual

Doc.no. VSS_is

Author this revision Svend Egil Nilsen

Verified By: Jan Thorsen

Revision Issued Changes / Comments

V.1.1 1998. First release,Vingtor Marine Author Bjørn Holmer

01 2001.03.16 Second release, Stento Marine ID. From now on revision status

01,02….

02 2002.07.01 Third release, Zenitel Marine ID Additional part;Introduction. Doc.

for new function; squelch.

03 2003.06.19 4th. release, with supplementary EMC and environmental-testing by

DNV.

New rev. for circuit diagram and partlist

From now on; VINGTOR brand.

03 2006.03.24 Simple change without new rev.no. Incorrect measurement on

fastening bracket for microphone VSS-222. New rev. of datasheet

VSS-222_ds rev.04 and drawing VSS-222_md rev.03

A100K10874 2010.08.27 New front and back pages. Doc.no. VSS_is rev.03 is replaced by

this document no.

A100K10874 2011.02.01 Updating of IP rating

Zenitel Marine assumes no responsibility for any errors that may appear in this publication, or Zenitel

Norway AS and its subsidiaries assume no responsibilities for any errors that may appear in this publication,

or for damages arising from the information in it. No information in this publication should be regarded as a

warranty made by Zenitel Norway AS.

The information in this publication may be updated or changed without notice. Product names mentioned in

this publication may be trademarks, they are used only for identification.

Zenitel Norway AS, February 2011

Installation & Service manual VSS system

A100K10874 2

2. General Description

The VSS system enable the navigator on a one

man operated bridge to listen to the environmental

sound signals from other ships or fog horns that

are audible outside the ship when standing inside

the enclosed bridge space.

The system is monitoring, according to rules;

Resolution MSC.86(70), frequencies between

70 and 820 Hz.

Four (4) VSS-222 weatherproof microphones are

mounted outside the wheelhouse and connected to

the VSS-111 audio amplifier and loudspeaker

within the bridge.

The VSS system has «remote muting» of the

amplifier circuit when the vessel’s own tyfon is

activated.

The VSS system has squelch function. Adjustable

muting of undesirable sound sources.

Microphone Direction Detector (MDD)

By use of four microphones the MDD will detect

the direction of the incoming signal and activate the

corresponding LEDs at the VSS-111 front panel

The four microphones operate in pair depending of

the direction of the received sound signal.

The microphone first detecting the sound will be

registrated in MDD and it will lock against

influence from the other microphone.

This will repeat each time a signal is strong enough

to trig the detector.

The «bridgewing» pair of microphone will indicate

if the sound is coming from the Sb or Ps direction,

while the other pair tell if the sound signal is coming from «Fore» or «Aft».

The combination of above will indicate the actual sector (see illustration above)

The VSS «Sound Signal Reception System» has been EMC tested according to relevant CENELEC and IEC

standards and type tested in order to qualify for Type Approval by Det Norske Veritas / Bureau Veritas / RINA

Det Norske Veritas (DNV), Certification Notes no. 2.4.; «Environment test specification for Instrumentation

and Automation Equipment» Optional EMC requirements:

Det Norske Veritas (DNV) Supplementary EMC and Environmental Testing.

Technical Report No.2003-3124 Revision No.01

IEC 60945, Fourth edition, 2002-08

EN50081-1 / EN50082-2 (CENELEC, Harmonized standards)

4 x VSS-222

OFF

VOLUME

DIMMER

SQUELCH

Installation & Service manual VSS system

A100K10874 3

3. Installation

3. 1 Main Unit VSS-111

For physical dimensions, recommended panel cut-out, size of mounting holes etc. please see

mechanical drawing VSS-111_dd.

According to rules the system loudspeaker(s) should be installed so that incoming signals are

audible at all positions inside the bridge.

The reproduction of the sound signal inside the bridge is normally done by use of the VSS-111

built-in loudspeaker (8 ohm).

If more than one loudspeaker required the built-in one can be disconnected (P2) and

replacement loudspeakers can be connected. (total impedance = 8 ohm)

3.2. VSS-222 microphones

The efficiency of the system depends upon the microphone installation. The location of the

microphones outside the wheelhouse are critical due to ship speed, wind and vibrations.

Normally the microphones are mounted outside on each side of the bridge bulkhead or top plus

if wanted one in the bow and one aft.

Precautions:

* Mount the microphones leeward due to wind and the ship's speed.

* Do not mount the microphone too close to regularly opened doors or windows near

the operator panel and loudspeaker. This prevent the system to start oscilliating due to

acoustic feedback

* When the microphone bracket is fastened on the

bulkhead, let the cable do a one-turn service-loop before

entering the micro-phone housing. The loop will ensure

that the effect of the vibrations shock absorber is not

impaired. This is necessary to reduce ship-born vibrations

reaching the sensitive microphone elements.

NOTE!

The cable screen is connected to the

microphone housing.

In the operators panel (VSS-111) the

cable screens must all be proper

terminated to the chassis in the W/H

console.

Above is important to avoid noise

problems

The panel should of course be suitable

placed near the person operating it.

On the VSS-111 main PC board

Connect the microphone cables as shown in the figure.

4P1

Screen

C1 C2

C3 C4

Microphoneinputs

Fore mic.

Aft mic.

Ps. mic.

Stb. mic.

All screens to chassis

in W/H console

Installation & Service manual VSS system

A100K10874 4

4. Setting & Adjustment

4.1 General

The settings are factory adjusted and set to a level close to the real operation conditions as

possible. But in order to optimise the performance of the system, may be the installation must

be adjusted on site.

4.2 Microphone adjustment

To prevent that the LEDs are activated by normal

background noise, the microphone input

sensitivity can be adjusted.

The threshold level for the received sound signals,

the amplifier input sensitivity, is individually

adjusted by the four screwdriver potentiometers;

RV1, RV2, RV3 and RV4.

This level adjustments are necessary to limit the

background noise trigging of the LED circuitry.

VSS-111 main PC board

1. Power up the system. The surrounding noise level should be as close to the real operating

conditions as possible.

2. Adjust each of the four channel’s potentiometer anti clockwise until the corresponding

LED light up and clockwise until it turns off and then carefully anti clockwise until light

up again.

3. NB! Avoid adjustments during unnatural noise situations. If necessary turn up the volume

control on front and listen to separate the sounds.

4.3 Remote Muting when using own typhoon

VSS-111 is prepared for «remote muting»

of the amplifier circuit when the vessel’s

own typhoon is activated.

The function is obtained by activating

relay RL1. The relay is activated when the

typhoon is activated.

Connect a potential free closing contact to

the P2 terminals 1 and 2 , marked "Mute"

as shown in the figure. The closing

contact to be in parallel with the operating

of the vessels own typhoon.

4.4 Adjustment and setting of Squelch function

Note! The squelch function is independent of the LED settings.

The surrounding noise level is different and to avoid the system to be

activated by undesirable sound sources as from other technical

equipment and from arbitrary activity as waves and birds, the

squelch setting may be adjusted on site.

The sensitivity is factory adjusted and set to approx.3mV input

signal. (Middle position for the squelch potentiometer)

To change this level you will need a sound source near as the

undesirable sound sources as possible. A radio can be used.

Place the source min.1mtr. from one of the microphones.

RV1

RV2

RV3

RV4

Mute

24VDC

Speaker 8 ohm

C38

D17

D16

RL1

Installation & Service manual VSS system

A100K10874 5

1. Remove cover for access to the potentiometer marked squelch. Use a screwdriver.

2. In case of higher noise threshold level than factory adjusted.

Turn potentiometer clockwise until the undesirable sound source not activates the system.

3. Increase the signal from the sound source with approx.3 dB.(To simulate the real sound

source) and check if the system activates. If yes the setting is successful,

replace the pot. cover.

4. In case of lower noise threshold level than factory adjusted.

Turn anticlockwise until the undesirable sound source not activates the system.

5. Increase the signal from the sound source with approx.3dB.(To simulate the real sound

source) and check if the system activates. If yes the setting is successful,

replace the pot. cover.

5. Operation of the system

Activate the system by the VSS-111 power ON/OFF switch.

Adjust the listening level of the received sound by the VOLUME control. The sound pressure

level shall at least be 10 dB(A) above the bridge noise level.

The reproduction of the sound signal inside the bridge

(Note. When windows and doors are left open, howling may result. The volume must then be

turned down until the howling stops).

Adjust the LED`s intensity level by use of the DIMMER control

Sound signals outside the bridge will be heard in the

loudspeaker and the approximate direction or sector for

the incoming sound signal will be indicated by two of

the front LED`s as illustrated below:

6. Specifications

Order no: VSS-111 Order no: VSS-222

Main Unit

Power: 24 VDC

Freq.range: 70 - 820 Hz

S/N ratio: > 60 dB

THD-N: > 1 %

Connection: Screw terminals

Coulor/finish: Black

Material: Anodized Al.

IP: 44

Dimensions (mm): 280 x 140 x 90

260 x 122 panel cut-out

Weight: 1.0 kg

Microphone

Element: RE50 ElectroVoice.

Type: Dynamic

Freq.response: 80 - 13000 Hz

Polar pattern: Omnidirectional

Impedance: 150 ohms

Coulor/finish: Grey

Material: Anodized Al.

IP: 56

Mounting: Bracket (stainless steel)

Termination: Cable 1.5m

Dimensions (mm): 110 x Ø40

150 x Ø40 w/bracket

Weight: 1.0 kg

Installation & Service manual VSS system

A100K10874 6

7. Datasheet, Electrical & Mechanical drawings

Cable diagram ........................................ ..................................................................Doc.no.GVSS CD1294B rev.04

Datasheet.............................................................. VSS-111 ..................................................................A100K10520

Dimension, mounting details................................ VSS-111 ..........................................Doc.no.VSS-111_dd Rev.05

Datasheet.............................................................. VSS-222 ..................................................................A100K10521

Bracket for mounting VSS-222............................ Art.no.VM-1564 .............................. Doc.no.VSS-222_md rev.03

Circuit diagram Audio amplifier circuit............... VSS-111 ..................................Doc.no.VSS-111_cd part 1 rev.04

Circuit diagram Sound reception detector............ VSS-111 ..................................Doc.no.VSS-111_cd part 2 rev.03

Component location ............................................. VSS-111 ............................................ Doc.no.VSS-111_lo rev.02

Circuit diagram & Component lay out................. Squelch circuit ........................Doc.no.VSS-squelch_cd_lo rev.00

Part list ................................................................. Squelch circuit ............................. Doc.no.VSS-squelch_pl rev.00

Partlist, complete.................................................. VSS-111 ....................................Doc.no.VSS-111_part list rev.02

Sparepart kit ......................................................... VSS............................................Doc.no.VSS-sparepart kit rev.00

VINGTOR | DATASHEET

VSS-111

MAIN STATION

FEATURES

Sound Reception system main unit▪

Built-in system ampliﬁer▪

Inputs for four (4) VSS-222 microphones▪

Built-in loudspeaker with manual volume control▪

LED dimmer control▪

Remote muting of the ampliﬁer circuitry when the vessel’s own typhone is activated▪

Squelch function▪

SPECIFICATIONS

Dimensions (WxHxD) 280 x 140 x 90 mm

Mounting Flush with six 4mm screws

Weight Approx 1.0 kg

Housing Anodized aluminium

Colour Black

IP-rating IP-41

Cable entry Without glands

Connections Screw terminals

Operation voltage 24 VDC

Frequency range 70 - 820 Hz

S/N ratio > 60dB

THD-N > 1%

3006216001

www.vingtor.com

VINGTOR products are developed and marketed by Zenitel Norway AS. The company’s Quality Assurance System is certiﬁed to meet the requirements in NS-EN ISO 9001:2008. Zenitel Norway AS reserves the right to modify designs