Sonifex CM-BHA Bedienungsanleitung

Sonifex Empfänger CM-BHA

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Headphone Amplifier with Limiter

& Loudspeaker

For the latest Sonifex handbook information please visit the Sonifex website at www.sonifex.co.uk

This handbook is for use with the following product:

CM-BHA Beltpack Headphone Amplifier with Limiter & Loudspeaker

Stock Code: 30-277

Artwork: AW010625

©Sonifex Ltd, 2019

Revision 1.02, November 2019

Sonifex Ltd, 61, Station Road, Irthlingborough,

Northants, NN9 5QE, England.

Tel: +44 (0)1933 650 700

Fax: +44 (0)1933 650 726

Email: sales@sonifex.co.uk

Website: https://www.sonifex.co.uk

Information in this document is subject to change without notice and does not represent a commitment

on the part of the vendor. Sonifex Ltd shall not be liable for any loss or damage whatsoever arising from

the use of information or any error contained in this manual.

No part of this manual may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying, recording, information storage and retrieval systems, for any purpose

other than the purchaser’s personal use, without the express written permission of Sonifex Ltd. Unless

otherwise noted, all names of companies, products and persons contained herein are part of a completely

fictitious adaptation and are designed solely to document the use of Sonifex product.

Made in the UK by

Product:

Serial No:

As standard, Sonifex products are supplied with a 1 year back to base warranty.

In order to register the date of purchase and so that we can keep you informed

of any product design improvements or modifications, it is important to

complete the warranty registration online. Additionally, if you register the

product on the Sonifex website, you can increase your product warranty to 2

years. Go to the Sonifex website at: www.sonifex.co.uk/register to apply for

your 2 year warranty.

‘the Company’ means Sonifex Ltd and where relevant includes companies within

the same group of companies as Sonifex Limited.

‘the Goods’ means the goods or any part thereof supplied by the Company and

where relevant includes: work carried out by the Company on items supplied by

the Purchaser; services supplied by the Company; and software supplied by the

Company.

‘the Purchaser’ means the person or organisation who buys or has agreed to

buy the Goods.

‘the Price’ means the Price of the Goods and any other charges incurred by the

Company in the supply of the Goods.

‘the Warranty Term’ is the length of the product warranty which is usually

12 months from the date of despatch; except when the product has been

registered at the Sonifex website when the Warranty Term is 24 months from

the date of despatch.

‘the Contract’ means the quotation, these Conditions of Sale and any other

document incorporated in a contract between the Company and the Purchaser.

This is the entire Contract between the parties relating to the subject

matter hereof and may not be changed or terminated except in writing in

accordance with the provisions of this Contract. A reference to the consent,

acknowledgement, authority or agreement of the Company means in writing

and only by a director of the Company.

a. The Company agrees to repair or (at its discretion) replace Goods which

are found to be defective (fair wear and tear excepted) and which are

returned to the Company within the Warranty Term provided that each of

the following are satisfied:

i. notification of any defect is given to the Company immediately

upon its becoming apparent to the Purchaser;

ii. the Goods have only been operated under normal operating

conditions and have only been subject to normal use (and in

particular the Goods must have been correctly connected and

must not have been subject to high voltage or to ionising radiation

and must not have been used contrary to the Company’s technical

recommendations);

iii. the Goods are returned to the Company’s premises at the

Purchaser’s expense;

iv. any Goods or parts of Goods replaced shall become the property of

the Company;

v. no work whatsoever (other than normal and proper maintenance)

has been carried out to the Goods or any part of the Goods without

the Company’s prior written consent;

vi. the defect has not arisen from a design made, furnished or specified

by the Purchaser;

vii. the Goods have been assembled or incorporated into other goods

only in accordance with any instructions issued by the Company;

viii. the defect has not arisen from a design modified by the Purchaser;

ix. the defect has not arisen from an item manufactured by a person

other than the Company. In respect of any item manufactured

by a person other than the Company, the Purchaser shall only be

entitled to the benefit of any warranty or guarantee provided by

such manufacturer to the Company.

b. In respect of computer software supplied by the Company the Company

does not warrant that the use of the software will be uninterrupted or

error free.

c. The Company accepts liability:

(i) for death or personal injury to the extent that it results from the

negligence of the Company, its employees (whilst in the course of

their employment) or its agents (in the course of the agency);

(ii) for any breach by the Company of any statutory undertaking as

to title, quiet possession and freedom from encumbrance.

d. Subject to conditions (a) and (c) from the time of despatch of the Goods

from the Company’s premises the Purchaser shall be responsible for any

defect in the Goods or loss, damage, nuisance or interference whatsoever

consequential economic or otherwise or wastage of material resulting

from or caused by or to the Goods. In particular the Company shall not

be liable for any loss of profits or other economic losses. The Company

accordingly excludes all liability for the same.

e. At the request and expense of the Purchaser the Company will test the

Goods to ascertain performance levels and provide a report of the results

of that test. The report will be accurate at the time of the test, to the best

of the belief and knowledge of the Company, and the Company accepts

no liability in respect of its accuracy beyond that set out in Condition (a).

f. Subject to Condition (e) no representation, condition, warranty or

other term, express or implied (by statute or otherwise) is given by

the Company that the Goods are of any particular quality or standard

or will enable the Purchaser to attain any particular performance or

result, or will be suitable for any particular purpose or use under specific

conditions or will provide any particular capacity, notwithstanding that

the requirement for such performance, result or capacity or that such

particular purpose or conditions may have been known (or ought to have

been known) to the Company, its employees or agents.

g. (i) To the extent that the Company is held legally liable to the

Purchaser for any single breach of contract, tort, representation

or other act or default, the Company’s liability for the same shall

not exceed the price of the Goods.

(ii) The restriction of liability in Condition (g)(i) shall not apply to any

liability accepted by the Seller in Condition (c).

h. Where the Goods are sold under a consumer transaction (as defined by

the Consumer Transactions (Restrictions on Statements) Order 1976) the

statutory rights of the Purchaser are not affected by these Conditions of

Sale.

Each product is shipped in protective packaging and should be inspected for

damage before use. If there is any transit damage take pictures of the product

packaging and notify the carrier immediately with all the relevant details of the

shipment. Packing materials should be kept for inspection and also for if the

product needs to be returned.

The product is shipped with the following equipment so please check to ensure

that you have all of the items below. If anything is missing, please contact the

supplier of your equipment immediately.

Item Quantity

Product unit 1

A3 Folded Handbook 1

Please contact Sonifex or your supplier if you have any problems with your

Sonifex product. Email technical.support@sonifex.co.uk for the repair/upgrade/

returns procedure, or for support & questions regarding the product operation.

The products in this manual comply with the essential requirements of the

relevant European health, safety and environmental protection legislation.

The technical justification file for this product is available at Sonifex Ltd.

The declaration of conformity can be found at:

https://www.sonifex.co.uk/declarations

The Waste Electrical and Electronic Equipment (WEEE) Directive

was agreed on 13 February 2003, along with the related Directive

2002/95/EC on Restrictions of the use of certain Hazardous

Substances in electrical and electronic equipment

(RoHS). The Waste Electrical and Electronic Equipment Directive (WEEE)

aims to minimise the impacts of electrical and electronic equipment on the

environment during their life times and when they become waste. All products

manufactured by Sonifex Ltd have the WEEE directive label placed on the case.

Sonifex Ltd will be happy to give you information about local organisations that

can reprocess the product when it reaches its “end of use”, or alternatively all

products that have reached “end of use” can be returned to Sonifex and will be

reprocessed correctly free of charge.

This apparatus should be installed in an area that is not subject to excessive

temperature variation (<0°C, >50°C), moisture, dust or vibration.

This apparatus shall not be exposed to dripping or splashing, and no objects

filled with water, such as vases shall be placed on the apparatus.

5 6 7 8

The CM-BHA is a portable, battery powered headphone amplifier for use in live

applications such as in-the-field news reports, providing audio feed monitoring

by headphones, earpiece, or built-in speaker.

Up to +30dB of gain can be applied to the incoming signal. The volume control

simultaneously modifies the output volume and the input gain, allowing input

signals of up to +18dBu to be reproduced without distortion.

An adjustable limiter protects the listener from excessive levels. The limiter is

only enabled when an earpiece or headphones are used, and when it is enabled

by the toggle switch. It is disabled when no jack is inserted, allowing a higher

volume to be passed to the speaker for “squawk mode” use.

Fig 1-1: CM-BHA Belt Pack Headphone Amplifier

A low battery warning LED flashes when the 9V PP3 battery has depleted to 6V,

notifying the user to swap the battery. The low power circuitry of the CM-BHA

gives up to 200 hours use from a single alkaline 9V PP3 battery.

Fig 1-2: CM-BHA Block Diagram

Fig 2-1: Top Panel View of CM-BHA

The headphone/earpiece connector is a ¼” jack socket that provides a

differential signal to a mono earpiece, or to stereo headphones. When using

stereo headphones, the right ear will be anti-phase, however speech will be

perfectly discernible.

The gain/volume control simultaneously modifies input gain and output

volume, allowing the user to connect high level signals (up-to +18dBu) without

distorting.

Should the battery voltage fall below 6V, the 3mm red low battery indicator will

flash, warning the user that the battery should be changed as soon as possible

to prevent failure.

The output level limiter (when enabled) prevents large signals from damaging

the user’s ears. The limit level is adjusted between -6dBu and +6dBu using

the recessed potentiometer, and limiter activity is indicated by a blue LED.

Persistent illumination informs the user that the volume should be reduced.

Fig 3-1: Side Panel View of CM-BHA

The output level limiter is enabled/disabled using the toggle switch on the side

panel. The limiter is disabled when the built-in speaker is active.

Fig 4-1: Bottom Panel View of CM-BHA

The audio connections are found on the bottom panel, and both have the

following connections:

Pin 1: Ground

Pin 2: Phase

Pin 3: Non-phase

The line input is an electronically balanced audio input with 200kΩ input

impedance, allowing multiple units to be daisy-chained together, without

causing noticeable loss of signal level. The line input can accept input levels of

upto +18dBu.

The loop through is a non-driven, parallel connection of the line input, allowing

multiple units to be daisy-chained together without specialist audio cables.

Low

battery

Limit

Off/On

Headphones

or earpiece

Speaker

Threshold

Limiter

activity

Volume

Gain

Off

Limiter

Loop through

Line

input <6V

Line Input Impedance: 200kΩ Electronically Balanced

Input Liiter Threshold: Adjustable -6dBu to +6dBu

Maximum Input Level: +18dBu

Input Gain/Volume: Adjustable -60dB to +30dB

Frequency Response: ±0.5dB (ref 0dBu 1kHz)

Distortion: <0.015% (ref +8dBu input, 0dB gain, 10kΩ load)

Maximum HP Output Level: +16dBu (ref 9V battery voltage, <1% THD,

2kΩ load)

+12dBu (ref 6V battery voltage, <1% THD,

2kΩ load)

Minimum HP impedance: 32Ω

Maximum Speaker Level: +12dBu (ref 9V battery voltage, <1% THD)

+6dBu (ref 6V battery voltage, <1% THD)

Dimensions (Raw): 12.5cm (W) x 6.7cm (D) x 4.8cm (H)

4.9” (W) x 2.6” (D) x 1.9” (H)

Dimensions (Boxed): 23cm (W) x 13cm (D) x 8cm (H)

9.1” (W) x 5.1” (D) x 3.1” (H)

Weight: Nett: 0.3kg Gross: 0.4kg

Nett: 0.7lbs Gross: 0.9lbs

Produktspezifikationen

Marke:	Sonifex
Kategorie:	Empfänger
Modell:	CM-BHA

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