Sonifex S0 v2 Handbook

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HANDBOOK

S0 v2

Radio Broadcast Mixer

Manufacturers of audio & video

products for radio & TV broadcasters

S0 v2 Handbook

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:

S0 v2 Radio Broadcast Mixer

AW10849 Stock Code: 30-367

Revision 1.04, October 2017

©Sonifex Ltd, 2017

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: http://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

Contents

Product Warranty - 2 Year Extended ii

Sonifex Warranty & Liability Terms & Conditions ii

1. Definitions ii

2. Warranty ii

Unpacking Your Product iii Repairs & Returns iv

Conformity iv

Safety & Installation of Mains Operated Equipment v

Voltage Setting Checks v Fuse Rating v Power Cable & Connection v WEEE Directive vi Atmosphere/Environment vi

1. Introduction 1

Feature Summary & Overview of Use 2

Features 2 Input Channels 3 USB Audio for Playback & Recording 3 Output Channels 3 Monitoring & Headphone Limiter 3 Metering 4 Tal kb a ck 4 Channel Remotes 4 Configuration Settings 4

Installation Notes 4

Atmosphere 4 Electromagnetic Radiation 4 Dimensions and Cut-Out Size for Flush Mounting 5

2. User Guide 6

S0 v2 Input Channels 6

Channels 1-4 Mono Balanced Mic/Stereo Unbalanced Line inputs 6

MIC INPUT 6 MIC TRIM 6 LINE INPUT 6 REMOTE OUTPUT 6 MIC / LINE Button 6 PGM Button 6 REC Button 7 TRIM Control 7

PAN /B AL C on tro l 7 CUE PFL Button 7 FADER Control 8 START Button 8

Channels 5-8 Dual Stereo Unbalanced Line/ USB Audio Inputs 8

LINE INPUTS 8 REMOTE OUTPUT 8 INP1/INP2 Button 9 PGM Button 9 REC Button 9 TRIM Control 9 BAL Control 9 CUE PFL Button 10 FADER Control 10 START Button 10

Channel 9 Telephone Interface/Stereo Unbalanced Auxiliary Inputs 10

AUX INPUT 10 R-BAL and C-BAL Controls 10 LINE (Telephone Interface) 10 HANDSET 11 CF/OUT 11 REMOTE OUTPUT 11 TEL/AUX Button 11 PGM Button 11 REC Button 12 TRIM Control 12 PAN /B AL C on tro l 1 2 CUE/PFL & TB Button 12 FADER Control 13 LINE HOLD Button 13

Main Outputs 13

PROGRAM OUTPUT 13 RECORD OUTPUT 14

S0 v2 Monitor I/O & USB Channels 14

MONITOR OUTPUT 14 LIGHT CONTROL 14 PRESENTER Headphones 14 GUEST Headphones 14 H/PHONE LIMIT Control 14

Contents & Figures

USB AUDIO 14 USB SERIAL 14 EXT 1 INPUT 14 LED Meter Display 15 PGM, REC & EXT 1 Buttons 15 Monitor, Presenter & Guest Level Controls 15 Monitor AUTO CUE/PFL Button 15 Monitor MUTE Indicator 15 AUX INPUT CHANNEL 9 15 Presenter AUTO CUE/PFL Button 16 Presenter SPLIT CUE/PFL Button 16 PRESENTER Headphones 16 Guest AUTO CUE/PFL Button 16 Guest TALKBACK Button 16 GUEST Headphones 16

Using the Telephone Interface 17

Making A Telephone Call and Routing It Through The S0 v2 17 Receiving A Telephone Call and Routing It Through The S0 v2 17 Skype On CHANNEL 9 17

3. Configuration Options 18

Modifying the Configuration Options Using Setup Mode 18 Page 1 – Input Select Modes (LED on PPM Scale 1) 18 Page 2 – PGM and REC Button Modes (LED on PPM Scale 2) 19 Page 3 – PFL Modes (LED on PPM Scale 3) 19 Page 4 – Remote Output Modes (LED on PPM Scale 4) 20

Modifying the Configuration Options Using SCi Software 21

Download the latest SCi Software 21 Connecting the USB Serial Port 21 Using SCi For The First Time 21

4. USB Audio 26

USB Audio Output from the S0 v2 26 USB Audio Input to the S0 v2 26

5. Connectors and Cabling 27

XLR 3 Pin Connectors 27 RCA (Phono) Connectors 27

6.35mm (¼”) ‘A’ Gauge Stereo Jack Plugs 27

Technical Specification For S0 v2 28

7. Appendix 1: S0 v2 – USB Serial Command Set 30

8. S0 v2 Skype Modification 34

Overview 34

Tools Required 34

Procedure 34

To disable Skype mode: 39

Figures

Fig 1-1: S0 v2 Mixer - Top View. 1 Fig 1-2: S0 v2 Mixer - Cut-out Sizes. 5 Fig 2-1: Channel 1 Rear Panel Connectors. 6 Fig 2-2: Channel 1 MIC/LINE Button. 6 Fig 2-3: Mic/Line Channel Strip. 7 Fig 2-4: Channel 1 FADER Control & START Button. 8 Fig 2-5: Channel 5 Rear Panel Connectors. 8 Fig 2-6: Dual Stereo Channel Input & Bus Selections. 9 Fig 2-7: Dual Stereo Channel Strip. 9 Fig 2-8: Channel 9 Rear Panel Connectors. 10 Fig 2-9: Channel 9 TEL/AUX Button. 11 Fig 2-10: Connection Diagram For Channel 9 For PC VOIP Application. 11 Fig 2-11: Channel 9 Strip. 12 Fig 2-12: CUE/ PFL, Fader & LINE/HOLD Button. 12 Fig 2-13: Mains Outputs. 13 Fig 2-14: MONITOR I/O & USB. 14 Fig 2-15: LED Meter Display. 15 Fig 2-16: PGM, REC and EXT 1 Buttons. 15 Fig 2-17: Monitor, Presenter and Guests Controls. 16 Fig 3-1: SCI Launcher Window. 21 Fig 3-2: SCI Channel Configuration Screen. 22 Fig 3-3: SCI Monitor Configuration Screen. 23 Fig 3-4: SCI Info & Updates Screen. 24 Fig 3-5: Reset Switch. 25 Fig 4-1: PC Device List. 26 Fig 5-1: XLR 3 Pin Connectors. 27 Fig 5-2: RCA (Phone) Connectors. 27 Fig 5-3: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs Used For Headphones And Monitor Outputs. 27 Fig 5-4: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs Used For Remote Outputs. 27 Fig 5-5: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs Used For Light Control Output. 27

Warranty Registration

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

If you register the product online, you can increase your product warranty to 2 years and we can also keep you informed of any product design improvements or modifications.

To register your product, please go online to www.sonifex.co.uk/register

Sonifex Limited y 61 Station Road y Irthlingborough y Northamptonshire y NN9 5QE y United Kingdom Tel: +44 (0)1933 650 700 y Fax: +44 (0)1933 650 726 y Email: technical.support@sonifex.co.uk y Internet: www.sonifex.co.uk

Product:

Serial No:

Warranty

Product Warranty - 2 Year Extended

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: http://www.sonifex. co.uk/technical/register/index.asp to apply for your 2 year warranty.

Note: For your own records the product serial number is recorded on the CE certification page of this handbook.

Sonifex Warranty & Liability Terms & Conditions

1. Definitions

‘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.

2. Warranty

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;

Warranty

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.

Unpacking Your Product

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

iii

CE Conformity

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

IEC mains lead fitted with moulded mains plug 1

Handbook and warranty card 1

If you require a different power lead, please let us know when ordering the product.

Repairs & Returns

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.

Conformity

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

Safety & Installation

Safety & Installation of Mains Operated Equipment

There are no user serviceable parts inside the equipment. If you should ever need to look inside the unit, always disconnect the mains supply before removing the equipment covers. The cover is connected to earth by means of the fixing screws. It is essential to maintain this earth/ground connection to ensure a safe operating environment and provide electromagnetic shielding.

Voltage Setting Checks

Ensure that the machine operating voltage is correct for your mains power supply by checking the box in which your product was supplied. The voltage is shown on the box label. The available voltage settings are 115V, or 230V. Please note that all products are either switchable between 115V and 230V, or have a universal power supply.

Fuse Rating

The product is supplied with a single fuse in the live conducting path of the mains power input. For reasons of safety it is important that the correct rating and type of fuse is used. Incorrectly rated fuses could present a possible fire hazard, under equipment fault conditions. The active fuse is fitted on the outside rear panel of the unit.

Power Cable & Connection

An IEC power connector is supplied with the product which has a moulded plug attached.

The mains plug or IEC power connector is used as the disconnect device. The mains plug and IEC power connector shall remain readily operable to disconnect the apparatus in case of a fault or emergency.

The mains lead is automatically configured for the country that the product is being sent to, from one of:

Territory Voltage IEC Lead Type Image

UK & Middle East 230V UK 3 pin to IEC lead

Europe 230V

USA, Canada and South America

Australia & New Zealand

Connect the equipment in accordance with the connection details and before applying power to the unit, check that the machine has the correct operating voltage for your mains power supply.

This apparatus is of a class I construction. It must be connected to a mains socket outlet with a protective earthing connection.

Important note: If there is an earth/ground terminal on the rear panel of the product then it must be connected to Earth.

European Schuko round 2 pin to IEC lead

115V 3 flat pin to IEC lead

230V Australasian 3 flat pin to IEC lead

Safety & Installation

WEEE Directive

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.

Atmosphere/Environment

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.

1. Introduction

The S0 v2 is a high quality yet simple to operate radio broadcast mixer ideally suited to community radio stations, for educational purposes and for internet radio. It is easy to use and provides the ideal solution for those who do not require the advanced functionality of a more complex unit.

Easy to understand, the S0 v2 includes a telephone hybrid for making and recording telephone calls and a 3.5mm stereo jack for plugging in an mp3 player. The addition of a USB port allows for recording to a PC and for playing a PC automation system directly through the mixer. The headphone outputs have a built in limiter to offer hearing protection and the studio speakers mute when a microphone fader is open, with automatic mic live sign switching.

Using many of the same components found on the S2 and S1 mixers, the S0 v2 offers quality and reliability in a cost effective package. It also allows presenters and DJs to be up and running quickly with a fully featured radio studio mixer.

Introduction 1

Fig 1-1: S0 v2 Mixer - Top View.

1 Introduction

Feature Summary & Overview of Use

• Fixed format 9 channel mixer.

• Can be rack mounted or used as a flush mounted desktop mixer.

• Large backlit buttons allow you to see the status of the mixer at all

times.

• The analogue signal paths use low noise circuitry to provide superb

audio performance.

• The high reliability and build quality of the S0 v2 minimises the chance

of failure, avoiding lost air-time.

• ALPS long throw 100mm faders give a smooth, repeatable response.

• The use of VCAs controlled by the faders ensures tight stereo tracking

and eliminates mechanical and electronic noise.

• The S0 v2 has an internal power supply providing regulated, ripple-free

power to the mixer.

Features

• Clear, simple and intuitive layout.

• 4 microphone/line input channels.

• 4 dual line input channels.

• Built in telephone interface channel.

• Auxiliary input for miscellaneous sources such as MP3 players.

• Independent Program and Record bus outputs.

• Pre-Fade Listen available on all channels.

• VU and PPM metering on a large LED display.

• Build in headphone volume limiter.

• Remote outputs on each channel to control external equipment such as CD players.

• Automatic muting of the monitor output when a microphone channel is open.

• Switching output to control external microphone live light.

• USB Audio input selectable on all dual line input channels, which can be automatically routed to Pre-Fade Listen.

• USB Audio output from the Record bus.

• User configurable options, accessible using the Sonifex SCi software or directly by using the S0 v2 Setup Mode, allowing for flexible setup and operation.

The Sonifex S0 v2 mixer is a compact, low cost, fixed format broadcast mixing console designed for on-air radio use. It uses the same high quality circuitry and components as the Sonifex S2 and S1 mixers to provide an audio experience second to none. The S0 v2 can be fitted flush into a desktop or can be rack mounted directly using the front panel mounting holes.

The uncomplicated and intuitive front panel layout ensures that the unit appeals to novices and broadcast professionals alike, whilst a range of user configurable options allows for flexible operation.

The console consists of nine input channels:

• 4 x mono balanced XLR mic/stereo unbalanced RCA phono line inputs.

• 4 x dual stereo unbalanced RCA phono line inputs.

Introduction 1

• 1 x telephone balance unit (with line and handset ports)/stereo unbalanced RCA phono auxiliary input with a parallel 3.5mm stereo jack input on the front panel.

Providing in total 4 mic, 12 stereo line, 1 TBU & 1 stereo auxiliary inputs which you can switch between.

Input Channels

Input source buttons at the top of each channel strip are used to select the required mono or stereo source. The mixer has two main stereo buses, PGM (Program) and REC (Record), so each channel also has PGM and REC buttons to independently select which mixer bus the selected input is routed to.

The XLR microphone inputs on channels 1 to 4 have individually selectable +48V phantom power and a gain calibration potentiometer providing up to 65dB of gain for the pre-amp. Input channel 1 also serves as the microphone input for a dedicated talkback channel.

The stereo RCA phono line inputs on channels 1 to 8 have 10dB of gain at the input to compensate for unbalanced consumer inputs.

Input channel 9 is a TBU and stereo auxiliary input channel. The TBU allows direct connection to a telephone line and allows calls to be made and received through the mixer using the handset connection. The auxiliary channel can switch between 2 independent inputs, one on the rear panel and one on the front panel.

Any channel which has the fader up is routed to the selected output, either PGM or REC or both.

Gain for each channel is trimmed by the front panel TRIM control providing ±15dB of gain. A PAN/BAL(ance) control is available to facilitate stereo imaging.

The use of VCAs controlled by the ALPS long throw 100mm faders gives a smooth, repeatable response and ensures tight stereo tracking while eliminating mechanical and electronic noise.

USB Audio for Playback & Recording

The S0 v2 has the option to send and receive audio over USB. This allows the audio on the REC bus to be sent to a PC for recording or monitoring purposes. Also, the S0 v2 can receive a USB audio stream from a PC and route it to the auxiliary inputs on channel 8. Alternatively, this signal can be routed to channels 5, 6 or 7 if required.

Output Channels

The S0 v2 has separate stereo PGM and REC bus outputs. The PGM bus is output on balanced stereo XLRs and the REC bus is output on unbalanced stereo RCA phono connectors. There are monitor outputs for presenter headphones, guest headphones and loudspeakers.

Monitoring & Headphone Limiter

The monitor loudspeakers, presenter headphones and guest headphones are on 6.35mm stereo jack sockets and the headphones can be plugged in to the front and rear of the mixer. The monitor loudspeaker and headphone levels are independently variable between 0 (cut off) and 10 (max).

With the concerns over listening levels being too high in headphones, the addition of an adjustable limit level potentiometer on the rear panel of the mixer is a great idea which limits the maximum level of the audio routed to the presenter and guest headphone outputs. An illuminated MUTE LED shows when a live microphone channel has muted the loudspeakers and there is a MUTE contact output available to illuminate a ‘MIC LIVE’ light via a 6.35mm stereo jack socket on the rear panel.

1 Introduction

A three way electronically interlocking illuminated switch bank selects the source routed to the loudspeaker and headphone outputs from either PGM, REC or from an additional unbalanced stereo RCA phono input EXT 1. This external input can be used for monitoring an off air signal or studio output.

Green illuminated AUTO CUE/PFL (pre fade listen) buttons adjacent to each level control allow the automatic monitoring of any channel that has been selected to pre-fade, either to the monitors or headphones.

For the presenter headphones, SPLIT CUE/PFL can be selected which places the selected source in mono in the left ear, and pre-fade in mono in the right ear.

Metering

A pair of bright 21 segment LED meters can be configured to show either VU or PPM metering. The meters follow the selection of the presenter headphones including any pre-fade or split pre-fade function.

Talkback

A separate TALKBACK button is provided to allow the presenter to talk to a guest on the guest headphones. The S0 v2 uses input channel 1 as the talkback source.

Channel Remotes

The remote outputs for each channel are highly configurable providing a comprehensive range of options to interface external equipment to the mixer. Each channel input has its own START and STOP remote controls which can be triggered when the channel is routed to the PGM or REC bus and the fader is opened or closed. The remotes can be set-up to be either pulsed or continuous latched outputs, and if in pulsed mode the START button has the capability to produce repeated start pulses.

Configuration Settings

The S0 v2 has a range of software configurable options which can be used to customize the operation of the mixer. It is possible to enable or disable specific inputs, enable phantom power for the microphone channels and limit which buses each channel can be routed to. Other settings control auto cancelling of PRE FADE when the channel fader is opened and all the remote output configurations.

The S0 v2 has an integral universal switch mode power supply, which uses an IEC mains inlet.

Installation Notes

Atmosphere

The S0 v2 mixer should be installed in an area which is not subject to excessive heat or cold. Also, you should avoid installing it in atmospheric conditions which are dusty, smoky or dirty, or where there is moisture or vibration. Do not use any liquids to clean the fascia of the mixer: a soft dry brush is ideal. Use a clean cloth moistened with water or ethyl alcohol to clean the trim. Other solvents may cause damage to paint or plastic parts.

Electromagnetic Radiation

Avoid using the S0 v2 mixer close to strong sources of electromagnetic radiation such as, video monitors or high power electric cabling. This may cause degradation of the audio quality due to induced voltages in connecting leads and chassis. In all cases the S0 v2 mixer should be installed and serviced by qualified personnel.

Dimensions and Cut-Out Size for Flush Mounting

External dimensions: 483mm (W) x 356mm (D) x 125mm (H)

The cut-out size is for reference only and should be checked with your mixer.

345mm

440mm

Fig 1-2: S0 v2 Mixer - Cut-out Sizes.

Introduction 1

2 User Guide

2. User Guide

Many of the options and default settings described in this section can be modified. Full details of all the configuration options and their default settings can be found in the Configuration Options section on “3. Configuration Options” on page 18.

S0 v2 Input Channels

The S0 v2 has 9 fixed format channels with up to 3 selectable inputs on each channel.

Channels 1-4: Mono Balanced XLR Microphone / Stereo Unbalanced RCA Line inputs

Channels 5-8: Dual Stereo Unbalanced RCA Line / USB Audio inputs

Channel 9: Telephone Interface / Stereo Unbalanced RCA Auxiliary (Rear) / Stereo Unbalanced Jack Auxiliary (Front) inputs

Channels 1-4 Mono Balanced Mic/Stereo Unbalanced Line inputs

MIC INPUT

This mono balanced XLR is the microphone input to the channel. The S0 v2 supports both dynamic (unpowered) and condenser (powered using 48V DC phantom power) microphones. By default, only channel 1 is configured to supply phantom power. The phantom power settings are part of the Configuration Options.

MIC TRIM

This small multi turn screw adjuster sets the amplification level for the microphone input, which is applied prior to the channels TRIM control. The available gain range is from +24dB to +65dB (ref -50dBu input) and allows a wide range of microphone types to be used.

Fig 2-1: Channel 1 Rear Panel Connectors.

LINE INPUT

This stereo unbalanced RCA (phono) is the line input to the channel. It has 10dB of gain at the input and is designed to connect directly to consumer level equipment such as CD players and other hi-fi equipment.

REMOTE OUTPUT

This 6.35mm (¼”) stereo jack socket is the remote output for the channel. It can be used to control external equipment such as turning on a “Mic Live” indication, or starting a CD player. There are 2 separate signals, remote start and remote stop, which are both open collector outputs. These signals can be configured to act differently depending on the input selected. The remote output settings are part of the Configuration Options.

MIC / LINE Button

Pressing this button changes the channel input selection between MIC and LINE. The button illuminates red to indicate that the LINE input is selected. When the channel’s fader is open, the input selection cannot be changed. When the MIC input is selected, these channels can be configured to supply 48V to microphones requiring Phantom Power.

This button can be disabled so that the selected input cannot be changed. The button operation and phantom power settings are part of the Configuration Options.

PGM Button

This button allows the output of the channel to be mixed onto the Program Bus output. The button illuminates green to indicate the channel is active on

Fig 2-2: Channel 1 MIC/ LINE Button.

User Guide 2

the Program Bus. This button can be disabled via the Configuration Options, so that it is permanently on or off.

REC Button

This button allows the output of the channel to be mixed onto the Record bus output. The button illuminates red to indicate the channel is active on the Record Bus. This button can be disabled via the Configuration Options, so that it is permanently on or off.

TRIM Control

This control allows the level of the audio on this channel to be adjusted by ±15dB. This additional gain is applied prior to the channels fader, and is useful for setting relative levels between audio sources on different channels.

Note: It is a good idea to set up all the audio channels so that they are all at the same reference level when the fader is fully up, meaning the mix levels are determined solely by the position of the faders.

PAN/BAL Control

This control has two functions depending on whether MIC or LINE is selected.

In MIC mode the control acts as PAN and allows the mono input to be positioned in the stereo image. With the control in the centre position, the signal is present on both the left and right channels. Turning the control fully anti-clockwise pans the signal to the left by increasing the level by 3dB and the signal on the right channel is turned off. Turning the

Fig 2-3: Mic/Line Channel Strip.

control fully clockwise pans the signal to the right by increasing the level by 3dB. The signal on the left channel is turned off.

In LINE mode the control acts as BAL (balance) and is used to alter the stereo image of the stereo input. With the control in the centre position, the signal is un-altered. Turning the control fully anti-clockwise shifts the signal to the left by increasing the gain by 6dB and the signal on the right channel is reduced by 6dB. Turning the control fully clockwise shifts the signal to the right by increasing the gain by 6dB while the signal on the left channel is reduced by 6dB.

CUE PFL Button

and adjusted via the TRIM control, and the pan or balance can be set with the PAN/BAL control. Provided that the fader is closed, the signal will not be routed to the PGM or REC outputs even if they are selected. This button is illuminated green to indicate CUE PFL is active and it has a momentary and latched action: if the button is held down, CUE PFL is cancelled when released. There is a Configuration Option to automatically cancel CUE PFL when the fader is opened. This option is enabled by default.

2 User Guide

FADER Control

The 100mm VCA fader is a linear level control that operates between fully attenuated in its lowest position to unity gain when fully open.

START Button

This button has a different function depending on whether MIC or LINE is selected. When in MIC mode, the button is an indicator and shows the state of the channel and the remote output as follows:

Off The channel is not routed to either the PGM or REC bus.

Illuminated Red The channel is routed to the PGM or REC bus, the fader is closed and the remote stop output is enabled.

Illuminated Green The channel is routed to the PGM or REC bus, the fader is open and the remote start output is enabled.

This is the default operation when in MIC mode, but this can be changed in the Configuration Options.

When in LINE mode, the button indicates the state of the channel, and also controls the operation of the remote outputs as follows:

Off The remote outputs are disabled. Pressing the button will enable/ disable the remote outputs, but they can only be disabled when the fader is closed.

Flashing Red The remote outputs are enabled, but the channel is not currently

Fig 2-4: Channel 1 FADER Control & START Button.

routed to the PGM or REC bus so the remote start and stop outputs are inactive.

Illuminated Red The remote outputs are enabled, the channel is routed to the PGM or REC bus and the fader is closed. If the fader is opened, the remote start output will become active and give a momentary pulse for

0.5 seconds.

Illuminated Green The remote outputs are enabled, the channel is routed to the PGM or REC bus and the fader is open. If the button is pressed, the remote start output will become active and give a momentary pulse for

0.5 seconds. If the fader is closed, the remote stop

will become active and give a momentary pulse for

0.5 seconds.

This is the default operation when in LINE mode, but this can be changed in the Configuration Options.

Channels 5-8 Dual Stereo Unbalanced Line/USB Audio Inputs

LINE INPUTS

The dual stereo unbalanced RCA phonos are the line inputs to the channel. They have 10dB of gain at the input and are designed to connect directly to consumer level equipment such as CD players and other hi-fi equipment. There are two stereo inputs per channel fader.

REMOTE OUTPUT

This 6.35mm (¼”) stereo jack socket is the remote output for the channel. It can be used to control external equipment such as starting a CD player. There

Fig 2-5: Channel 5 Rear Panel Connectors.

User Guide 2

are 2 separate signals, remote start and remote stop which are both open collector outputs. These signals can be configured to act differently depending on the input selected. The remote output settings are part of the Configuration Options.

INP1/INP2 Button

Pressing this button changes the channel selection between the two LINE inputs. INP1 corresponds to the lower numbered line input, i.e. on channel 5, INP1 is line 5/1 and INP2 corresponds to the higher numbered line input, i.e. on channel 5, INP2 is line 5/2. It can also be configured to allow the USB Audio input to the mixer to be routed to this channel. The button is illuminated red to indicate when the INP2 input is selected, and amber to indicate when the USB Audio input is selected. When the channel’s fader is open, the input selection cannot be changed. This button can be disabled so that the selected input cannot be changed. The button operation settings are part of the Configuration Options. By default, channel 8 is enabled for INP1/INP2 and USB Audio to be selectable. For channels 5-7, INP1/INP2 only are selectable.

PGM Button

This button allows the output of the channel to be mixed onto the Program Bus output. The button is illuminated green to indicate the channel is active on the Program Bus. This button can be disabled via the Configuration Options, so that it is permanently on or off.

Fig 2-6: Dual Stereo Channel Input & Bus Selections.

REC Button

This button allows the output of the channel to be mixed onto the Record bus output. The button is illuminated red to indicate the channel is active on the Record Bus. This button can be disabled via the Configuration Options, so that it is permanently on or off.

TRIM Control

BAL Control

This control is used to alter the stereo image of the stereo input. With the control in the centre position, the signal is un-altered. Turning the control fully anti-clockwise shifts the signal to the left by increasing the gain by 6dB with the signal on the right channel reduced by 6dB. Turning the control fully clockwise shifts the signal to the right by increasing the gain by 6dB with the signal on the left channel reduced by 6dB.

Fig 2-7: Dual Stereo

Channel Strip.

2 User Guide

CUE PFL Button

Selecting CUE PFL routes the pre-fader input signal to the monitoring section where the signal can be heard on the Monitor, Presenter or Guest headphones (provided that the associated AUTO CUE/PFL button is selected). The level can then be checked on the meters and adjusted via the TRIM control, and the balance set with the BAL control. Provided that the fader is closed, the signal will not be routed to the PGM or REC outputs even if they are selected. This button is illuminated green to indicate CUE PFL is active and it has a momentary and latched action: if the button is held down, CUE PFL is cancelled when released. There is a Configuration Option to automatically cancel CUE PFL when the fader is opened. This option is enabled by default.

FADER Control

The 100mm VCA fader is a linear level control that operates between fully attenuated in its lowest position to unity gain when fully open.

START Button

This button indicates the state of the channel, and also controls the operation of the remote outputs as follows:

Off The remote outputs are disabled. Pressing the button will enable/disable the remote outputs, but they can only be disabled when the fader is closed.

Flashing Red The remote outputs are enabled, but the channel is not currently routed to the PGM or REC bus so the remote start and stop outputs are inactive.

0.5seconds.

0.5 seconds. If the fader is closed, the remote stop

will become active and give a momentary pulse for

0.5 seconds.

This is the default operation, but this can be changed in the Configuration Options.

Channel 9 Telephone Interface/ Stereo Unbalanced Auxiliary Inputs

AUX INPUT

This stereo unbalanced RCA (phono) is the auxiliary input to the channel. It has 10dB of gain at the input and is designed to connect directly to consumer level equipment such as CD players and other hi-fi equipment. There is a second auxiliary 3.5mm stereo jack socket input, which is also routed to channel 9, which is located on the front panel below the monitor mute indicator. The AUX inputs can be mixed or selected independently depending on the Configuration Options chosen.

R-BAL and C-BAL Controls

These small multi turn screw adjusters are used to tune the telephone interface to the characteristics of a standard analogue telephone line. They are factory set and should not need to be adjusted.

LINE (Telephone Interface)

This RJ11 socket allows the S0 v2 to be connected directly to an analogue telephone line.

Fig 2-8: Channel 9 Rear Panel Connectors.

User Guide 2

HANDSET

This RJ11 socket is the connection for an analogue telephone handset. With the S0 v2 connected to an analogue telephone line, the handset allows calls to be made and received.

CF/OUT

This 3.5mm stereo jack socket provides a consumer level cleanfeed output. It is possible to connect the S0 v2 to a PC in order to use VOIP software such as Skype®. For a connection diagram, see Fig 2-10.

REMOTE OUTPUT

This 6.35mm (¼”) stereo jack socket is the remote output for the channel. It can indicate the status of the telephone interface when the channel is in TEL mode, or it can be used to control external equipment such as starting a CD player when the channel is in AUX mode. There are 2 separate signals, remote start and remote stop which are both open collector outputs. These signals can be configured to act differently depending on the input selected. The remote output settings are part of the Configuration Options.

TEL/AUX Button

Pressing this button changes the channel input connection between TEL and AUX. There are two auxiliary inputs to channel 9, one on the rear panel and one on the front panel below the monitor mute indicator. By default, these inputs can be independently selected. The button is illuminated red to indicate when the rear panel AUX input is selected,

Fig 2-9: Channel 9 TEL/ AUX Button.

and amber to indicate when the front panel AUX input is selected. When the channels fader is open, the input selection cannot be changed. This button can be disabled so that the selected input cannot be changed. The button operation settings are part of the Configuration Options.

PGM Button

Fig 2-10: Connection Diagram For Channel 9 For PC VOIP Application.

2 User Guide

REC Button

TRIM Control

PAN/BAL Control

This control has two functions depending on whether TEL or AUX is selected.

In TEL mode the control acts as PAN and allows the mono input to be positioned in the stereo image. With the control in the centre position, the signal is present on both the left and right channels. Turning the control fully anti-clockwise pans the signal to the left by increasing the level by 3dB and the signal on the right channel is turned off. Turning the control fully clockwise pans the signal to the right by increasing the level by 3dB and the signal on the left channel is turned off.

Fig 2-11: Channel 9 Strip.

In AUX mode the control acts as BAL (balance) and is used to alter the stereo image of the stereo input. With the control in the centre position, the signal is un-altered. Turning the control fully anti-clockwise shifts the signal to the left by increasing the gain by 6dB with the signal on the right channel reduced by 6dB. Turning the control fully clockwise shifts the signal to the right by increasing the gain by 6dB with the signal on the left channel reduced by 6dB.

CUE/PFL & TB Button

Selecting CUE/PFL & TB routes the pre-fader input signal to the monitoring section where the signal can be heard on the Monitor, Presenter or Guest headphones provided the associated AUTO CUE/PFL button is selected. The level can then be checked on the meters and adjusted via the TRIM control, and the pan or balance set with the PAN/ BAL control. When the channel is in TEL mode, selecting CUE/PFL & TB also enables talkback from the channel 1 microphone to the caller on the telephone, without having to open the fader on channel 1. Provided the fader is closed, the signal will not be routed to the PGM or REC outputs even if they are selected. This button is illuminated green to indicate CUE/PFL & TB is active, and it has a momentary and latched action; if the button is held down, CUE/PFL & TB is cancelled when released. There is a Configuration Option to automatically cancel CUE/PFL & TB when the fader is opened. This option is enabled by default.

Fig 2-12: CUE/ PFL, Fader &

LINE/HOLD Button.

User Guide 2

FADER Control

The 100mm VCA fader is a linear level control that operates between fully attenuated in its lowest position to unity gain when fully open.

LINE HOLD Button

This button has a different function depending on whether TEL or AUX is selected. When in TEL mode, the button controls the connection to the telephone line and indicates the state of the connection as follows:

Off The telephone line is disconnected. The remote stop output is active. Pressing the button will connect the channel to the telephone line.

Flashing Red The channel is connected to the telephone line, but it is not currently routed to the PGM or REC bus. The remote start output is active. Pressing the button will disconnect the channel from the telephone line.

Illuminated Red The channel is connected to the telephone line and it is routed to the PGM or REC bus. The remote start output is active. Pressing the button will disconnect the channel from the telephone line.

Pulsing Red This indicates that the telephone line is ringing. Pressing the button will connect the channel to the telephone line and pick up the call.

This is the default operation when in TEL mode, but this can be changed in the Configuration Options.

When in AUX mode, the button indicates the state of the channel, and also controls the operation of the remote outputs as follows:

Off The remote outputs as disabled. Pressing the button will enable/disable the remote outputs, but they can only be disabled when the fader is closed.

Flashing Red The remote outputs are enabled, but the channel is not currently routed to the PGM or REC bus so the remote start and stop outputs are inactive.

0.5 seconds.

0.5 seconds. If the fader is closed, the remote stop will become active and give a momentary pulse for

0.5 seconds.

This is the default operation when in AUX mode, but this can be changed in the Configuration Options.

Main Outputs

The S0 v2 has 2 main outputs mounted on the rear panel.

PROGRAM OUTPUT

This is the main mixing desk output which would normally be connected to the transmission or encoding system. All input channels that have the PGM bus selected and the fader open will be mixed onto this stereo balanced XLR output.

Fig 2-13: Mains

Outputs.

2 User Guide

RECORD OUTPUT

The record output provides an independent mix that would typically be used as a record source for jingles, program content and pre-recorded interviews. All input channels that have the REC bus selected and the fader open will be mixed onto this stereo unbalanced RCA (phono) output. By default, the content of the record output is also routed to the USB Audio output channel. This can be changed so that the program output audio is routed to the USB Audio output channel. See the USB Audio section on “4. USB Audio” on page 26 for more details.

S0 v2 Monitor I/O & USB Channels

MONITOR OUTPUT

This stereo unbalanced 6.35mm (¼”) socket output is typically used to feed the studio monitor speakers. This output is automatically muted if a microphone channel is routed to the PGM or REC bus and the fader is open. This is to stop unwanted feedback. A suitable external amplifier is required to drive the loudspeakers from this output. Alternatively, active loudspeakers can be connected directly.

LIGHT CONTROL

This 6.35mm (¼ inch) socket provides a switching contact to allow an external “MIC LIVE” indicator to be controlled. The connector provides a normally open switch between the Tip and Sleeve, and a normally closed switch between the Ring and the Sleeve. The switch is activated when a microphone channel is routed to the PGM or REC bus and the fader is open.

PRESENTER Headphones

This stereo 6.35mm (¼”) socket is the feed to the presenter headphones. It is wired in parallel with the presenter headphone connector on the front panel of the mixer.

Fig 2-14: MONITOR I/O & USB.

GUEST Headphones

This Stereo 6.35mm (¼ inch) socket is the feed to the guest headphones. It is wired in parallel with the guest headphone connector on the front panel of the mixer.

H/PHONE LIMIT Control

This small multi turn screw adjuster sets the maximum audio level of the signal fed to the presenter and guest headphones. It is designed to protect the headphone users from excessive audio levels. Once the audio level exceeds the limit threshold, the audio feed to the headphones remains at the limit level. When the limiter is active, the audio may become distorted. If this happens either reduce the audio level of the headphone signal or increase the headphone limit level. Note: This limiter has been added to protect the hearing of the users of this mixer, so please use the H/PHONE LIMIT control sensibly.

USB AUDIO

This USB Type B connector is the bi-directional USB Audio port that provides a USB Audio output of the signal on the REC or PGM bus, and can accept a USB Audio input which is routed to channels 5-8. The USB Audio input signal can also be routed automatically to the CUE/PFL bus allowing the audio to be heard in any on the monitor channels that have the AUTO CUE/PFL selected. This setting is part of the configuration options. See the USB Audio section on “4. USB Audio” on page 26 for more details.

USB SERIAL

This USB Type B connector provides the USB Serial port to allow the S0 v2 to be connected to a PC. Using this connection, the Configuration Options can be modified using the Sonifex SCi software. Full details of all the configuration options and their default settings can be found in the Configuration Options section on “3. Configuration Options” on page 18.

EXT 1 INPUT

These stereo unbalanced RCA phonos provides an external input that would typically be used to monitor the on-air or post-processor output to ensure it is correct.

LED Meter Display

The LED Meters give a visual representation of the audio routed to the presenter headphones including CUE/PFL and SPLIT CUE/PFL signals. They can be configured to display either PPM or VU. The PPM meters have a 1-7 scale and are configured such that a 1 kHz signal, at 0dBu at the PGM output, will indicate a meter reading of 4. Each mark on the PPM scale indicates a 4 dB change in signal level. The VU meter operates between -20 and +3 volume units and follows the standard definition for a VU meter. A red LED indicates which scale is currently selected. To change scale, ensure all faders are closed, press and hold the PGM button and then press the EXT 1 button.

Fig 2-15: LED Meter Display.

PGM, REC & EXT 1 Buttons

These buttons select the source for the monitoring section of the S0 v2. The selected source will be routed to the monitor output and the presenter and guest headphones. These buttons do not affect the signals on the Main Program and Record outputs. The PGM button illuminates green, the REC button illuminates red and the EXT 1 button illuminates amber when selected. One button is selected at all times.

User Guide 2

Fig 2-16: PGM, REC and EXT 1 Buttons.

Monitor, Presenter & Guest Level Controls

These controls independently adjust the volume of the signals sent to the loudspeaker monitor, presenter and guest headphones. The presenter and guest outputs are protected by a level limiter that restricts the audio level fed to the headphones.

Monitor AUTO CUE/PFL Button

When this button is selected, the normal output fed to the monitor loudspeaker will be replaced if one or more input channels have CUE PFL selected. The channels with CUE/PFL selected will be mixed and fed to this output without having to have the fader open. This button illuminates green when selected.

Monitor MUTE Indicator

This indicator illuminates to show when the monitor loudspeaker output has been automatically muted due to one of the microphone channels being open and routed to the PGM or REC bus. The LIGHT CONTROL output on the rear panel gives the option to use an external indicator to show when the monitor loudspeaker is muted, i.e. when a microphone output is active.

AUX INPUT CHANNEL 9

This stereo unbalanced 3.5mm jack socket is the auxiliary input to channel

9. It has 10dB of gain at the input and is designed to connect directly to consumer level equipment. This input is in addition to the primary auxiliary input on the rear panel.

2 User Guide

Fig 2-17: Monitor, Presenter and Guests Controls.

Presenter AUTO CUE/PFL Button

When this button is selected, the normal output fed to the presenter’s headphones will be replaced if one or more input channels have CUE/PFL selected. The channels with CUE/PFL selected will be mixed and fed to this output without having to have the fader open. This button illuminates green when selected.

Presenter SPLIT CUE/PFL Button

This button allows the presenter to simultaneously monitor the selected source (PGM, REC or EXT 1), and any channel that has CUE/PFL selected. The selected source is routed in mono to the left ear and the CUE/PFL channels are routed in mono to the right ear. This button can only be selected if the presenter AUTO CUE/PFL button is selected and it illuminates amber when selected.

PRESENTER Headphones

This stereo 6.35mm (¼”) socket is the feed to the presenter headphones. It is wired in parallel with the presenter headphone connector on the rear panel of the mixer.

Guest AUTO CUE/PFL Button

When this button is selected, the normal output fed to the guest’s headphones will be replaced if one or more input channels have CUE/PFL selected. The channels with CUE/PFL selected will be mixed and fed to this output without having to have the fader open. This button illuminates green when selected.

Guest TALKBACK Button

This button allows a presenter using a microphone on channel 1 to communicate with the guest via the guest headphones. When the button is selected, the microphone signal on channel 1 is routed to the guest headphones without the need to select CUE PFL or open the fader on channel 1. This button is illuminated red to indicate that TALKBACK is active, and it has a momentary and latched action; if the button is held down, TALKBACK is cancelled when released.

GUEST Headphones

This stereo 6.35mm (¼”) socket is the feed to the guest headphones. It is wired in parallel with the guest headphone connector on the rear panel of the mixer.

User Guide 2

Using the Telephone Interface

The Telephone Interface built into the S0 v2 allows you to directly connect a standard analogue telephone line and telephone handset. You can then route telephone calls through the S0 v2 mixing desk allowing you to perform telephone interviews, broadcast requests or host ‘phone in’ style programs.

Connect the LINE connector on the rear of the S0 v2 to a standard analogue telephone line using a suitable cable. Connection to a standard BT phone socket will typically require a cable with a male RJ11 to a BT phone plug. Connect the HANDSET connector on the rear of the S0 v2 to a standard telephone handset. If all the connections are correct, on lifting the telephone handset, a standard dial tone should be heard.

Making A Telephone Call and Routing It Through The S0 v2

1. Connect all cables as described above.

2. Select TEL mode on channel 9. The TEL/AUX button should not be illuminated.

3. Ensure the LINE HOLD button is not selected.

4. Using the telephone handset, dial the required number.

5. When the call is answered, it can be transferred to the S0 v2. Ensure the fader on channel 9 is closed and then press CUE/PFL & TB. This will automatically activate the LINE HOLD button which will connect the call to the S0 v2. The presenter can talk to the person on the telephone via microphone channel 1 and listen on the headphones, but the audio will not be routed to the PGM or REC bus outputs.

6. The telephone handset can now be replaced if required.

7. To put the call to air, open the fader on channel 9. The audio will appear on the selected PGM or REC output.

8. To terminate the call, close the fader on channel 9 and press the LINE HOLD button to disconnect the mixer from the telephone line.

Receiving A Telephone Call and Routing It Through The S0 v2

1. When a telephone call is received, the handset will ring, and the LINE HOLD button will pulse to indicate a caller is waiting.

2. The call can be answered either by lifting the telephone handset, or by pressing the CUE/PFL button. Ensure the fader on channel 9 is closed. The presenter can talk to the person on the telephone via microphone channel 1 and listen on the headphones. Provided the fader is closed, the audio will not be routed to the PGM or REC bus outputs.

3. If the telephone handset was used, it can now be replaced if required.

4. To put the call to air, open the fader on channel 9. The audio will appear on the selected PGM or REC output.

5. To terminate the call, close the fader on channel 9 and press the LINE HOLD button to disconnect the mixer from the telephone line.

Skype On CHANNEL 9

The latest upgrade to the S0 v2 mixer allows a presenter to operate Skype on channel 9, with the only interconnection being a USB cable. The S0 v2’s USB audio feature has previously allowed either PROGRAMME or RECORD bus audio (selected by jumper) to be routed to a PC via USB interface for the purpose of audio recording, with a return path useful for providing a pre-fade listen (PFL) for a playout system.

The upgrade gives you a third option, allowing the cleanfeed output from the telco channel to be routed to a PC via the USB. Setting both the “microphone” and “speakers” within Skype to ‘S0 v2’ then allows full duplex communication between the S0 v2 presenter and a caller, enabling the user to audition the caller on PFL to set levels before either going to air or recording a feature. See Appendix 2, S0 v2 Skype Modification.

3 Configuration Options

3. Configuration Options

The S0 v2 has a range of configuration options that allow different aspects of the mixer’s operation to be customised. This can be done using the Sonifex SCi software that runs on a PC, or through a dedicated setup mode on the mixer itself.

Modifying the Configuration Options Using Setup Mode

The setup mode allows the configuration options to be modified directly, without the need to connect the S0 v2 to a PC. The configuration settings are presented in pages, with the current page displayed on the PPM scale on the LED meters display. To change a setting, first select the relevant page, then using the details in the table below, press the relevant button to select the required option setting. The buttons used to select the settings will continually flash a number of times to indicate the current setting. For example, for a setting with mode 4 selected, a button would repeatedly flash 4 times with a short pause between each sequence of 4 flashes.

To Enter Setup Mode:

1. Ensure all faders are closed.

2. Press and hold the Monitor, Presenter and Guest AUTO CUE/PFL buttons.

3. Press the Monitor PGM button 5 times within 2 seconds.

4. A single sweep on the LED meters indicates that setup mode has been entered and the buttons can be released.

To change the current page, press the Guest TALKBACK button. The LED meters display will indicate the new page on the PPM scale.

To Exit Setup Mode:

1. Press and hold the Guest TALKBACK button for 2 seconds.

2. A dual sweep on the LED meters indicates return to normal operation and the button can be released.

To return all configuration options to the default settings:

1. Remove power from the unit.

2. Ensure all faders are closed.

3. Press and hold the Monitor REC, Monitor AUTO CUE/PFL, Presenter AUTO CUE/PFL and Guest AUTO CUE/PFL buttons.

4. Apply power to the unit. A single sweep on the LED meters indicates that the configuration options are being returned to defaults. The buttons can be released.

5. A dual sweep on the LED meters indicates return to normal operation.

Page 1 – Input Select Modes (LED on PPM Scale 1)

Channels 1-4 Input Select Modes are set using the MIC/LINE buttons for each channel.

Mode 1 MIC & LINE inputs available for selection. Phantom power is off (default for channels 2-4).

Mode 2 MIC & LINE inputs available for selection. Phantom power is on (default for channel 1).

Mode 3 MIC input only, the button is disabled. Phantom power is off.

Mode 4 MIC input only, the button is disabled. Phantom power is on.

Mode 5 LINE input only, the button is disabled. Phantom power is off.

Channels 5-8 Input Select Modes are set using the INP1/INP2 buttons. INP1 refers to the line input with the lower number on the channel i.e. on

Configuration Options 3

channel 5 INP1 is LINE 5/1. INP2 refers to the line input with the higher number on the channel i.e. on channel 5 INP2 is LINE 5/2.

Mode 1 INP1 & INP2 inputs available for selection (default for channels 5-7).

Mode 2 INP1 input only, the button is disabled.

Mode 3 INP2 input only, the button is disabled.

Mode 4 INP1 & USB Audio inputs available for selection.

Mode 5 INP2 & USB Audio inputs available for selection.

Mode 6 USB Audio input only, the button is disabled.

Mode 7 INP1 & INP2 & USB Audio inputs available for selection (default for channel 8).

Channel 9 Input Select Modes are set using the TEL/AUX button. AUX1 refers to the AUX input on the rear panel. AUX2 refers to the AUX input on the front panel.

Mode 1 TEL & AUX1 & AUX2 inputs available for selection (default).

Mode 2 TEL & AUX1 inputs available for selection.

Mode 3 TEL & AUX2 inputs available for selection.

Mode 4 TEL input only, the button is disabled.

Mode 5 AUX1 & AUX2 inputs available for selection.

Mode 6 AUX1 input only, the button is disabled.

Mode 7 AUX2 input only, the button is disabled.

Channel 9 Cleanfeed Control when CUE/PFL TALKBACK is active. This is set using the CUE/PFL TALKBACK button.

Mode 1 Cleanfeed is muted when CUE/PFL TALKBACK is active (default).

Mode 2 Cleanfeed level is reduced when CUE/PFL TALKBACK is active.

USB Audio Input CUE/PFL Mode. This is used to automatically route the USB Audio input to the CUE/PFL bus allowing it to be monitored on the Monitor, Presenter and Guest Headphone outputs. It is set using the Monitor AUTO CUE/PFL button.

Mode 1 The USB Audio input is automatically routed to the CUE/PFL bus as well as being available on channels 5-8 (default).

Mode 2 The USB Audio input is not routed to the CUE/PFL bus.

Press the guest talkback button to go to page 2.

Page 2 – PGM and REC Button Modes (LED on PPM Scale 2)

PGM Button Modes are set using the PGM buttons on channels 1-9 and can be activated on a per channel basis.

Mode 1 PGM is selectable (default).

Mode 2 PGM is always on, the button is disabled.

Mode 3 PGM is always off, the button is disabled.

REC Button Modes are set using the REC buttons on channels 1-9 and can be activated on a per channel basis.

Mode 1 REC is selectable (default).

Mode 2 REC is always on, the button is disabled.

Mode 3 REC is always off, the button is disabled.

Page 3 – PFL Modes (LED on PPM Scale 3)

CUE/PFL Automatic Cancel Mode is set using the CUE/PFL buttons on channels 1-9 and can be activated on a per channel basis.

3 Configuration Options

Mode 1 CUE/PFL is automatically cancelled when the fader is opened (default).

Mode 2 CUE/PFL is not automatically cancelled when the fader is opened.

AUTO CUE/PFL Button Modes are set using the Monitor, Presenter and Guest AUTO CUE/PFL buttons.

Mode 1 AUTO CUE/PFL is selectable (default).

Mode 2 AUTO CUE/PFL is always on, the button is disabled.

Mode 3 AUTO CUE/PFL is always off, the button is disabled.

Page 4 – Remote Output Modes (LED on PPM Scale 4)

Remote Output Modes are set using the START buttons on channels 1-8 and the LINE HOLD button on channel 9. The Remote output modes are set independently for all inputs on each channel. The input select buttons on each channel select which input the remote mode is assigned to. A channel is considered active when either PGM or REC is selected and the fader is open.

Mode 1 Latching remote start when channel or LINE HOLD is active. Latching remote stop when channel or LINE HOLD is inactive.

Mode 2 Momentary remote start for 0.5 seconds when the channel becomes active. Additional momentary remote starts, for 0.5 seconds each, can be activated by pressing the START button. Momentary remote stop for 0.5 seconds when the channel becomes inactive.

Mode 3 Momentary remote start for 0.5 seconds when the channel becomes active. Repeat start is disabled. Momentary remote stop for 0.5 seconds when the channel becomes inactive.

Mode 4 The remote outputs are disabled.

Mode 5 Remotes and START button states are set by USB Serial commands.

Mode 6 Latching remote start when LINE HOLD is active, telephone line ringing indicated on remote stop. Available for selection on channel 9 TEL mode only.

Defaults: Channels 1-4 MIC Mode 1 LINE Mode 2 Channels 5-8 INP1 Mode 2 INP2 Mode 2 USB Audio Mode 2 Channel 9 TEL Mode 6 AUX Rear Mode 2 AUX Front Mode 2

The CUE/PFL buttons are used to set whether the remotes are active when CUE/PFL is activated and deactivated or not.

Mode 1 Remotes are active when CUE/PFL is activated/deactivated (default).

Mode 2 Remotes are not active when CUE/PFL is activated/deactivated.

Configuration Options 3

Modifying the Configuration Options Using SCi Software

Sonifex SCi software is a free of charge software package available to configure the S0 v2 Mixer, as well as many other Sonifex products. The S0 v2 Mixer is supported in SCi version 2.0.5 and above. SCi is designed to run on a computer running Microsoft Windows® XP or later.

Download the latest SCi Software

This is located on the Sonifex website in the Sonifex Downloads section: http://www.sonifex.co.uk/technical/software/index.shtml

Download and then run the installer, and follow the on screen instructions to install the software.

Connecting the USB Serial Port

The S0 v2 uses a USB Serial port instead of a standard RS232 with a 9-way ‘D’ type connector. Connect the S0 v2 to a spare USB port on the computer using a standard USB lead. The computer will automatically install the required drivers when the S0 v2 is connected for the first time.

Using SCi For The First Time

Once the S0 v2 Mixer is connected to the computer, launch the SCi program. The first thing to appear is the SCi Launcher which shows a list of current devices, which initially will be blank. Click on the large “plus” button to start the device discovery scan. The SCi Device List will be shown and the software will search for any Sonifex products that are connected to the computer’s serial and network ports. Once the scan is complete,

Fig 3-1: SCI Launcher Window.

the S0 v2 Mixer should appear in the Device List window. If it is not listed, check the cable between the S0 v2 and the computer and that the S0 v2 is powered and repeat the scan. With the scan successfully completed, the Device List can be closed and the Launcher should now show the devices that were discovered. If the S0 v2 is in the list, but it has been reported as “Not Supported”, this indicates that the specific driver file for the S0 v2 is not installed. Visit the Sonifex website to download the S0 v2 driver, restart SCi and repeat the device discovery scan.

Click on the S0 v2-Mixer entry to launch the S0 v2 SCi interface.

3 Configuration Options

SCi for the S0 v2

The S0 v2 SCi interface offers an alternative method of setting the configuration options. The available options are divided into 3 main sections; Channel Configuration, Monitor Configuration and Info & Updates. The bottom of the main screen shows the product and version information of the connected unit.

The first tab shows the Channel Configuration options. The settings are shown individually for each of the 9 input channels and set the input and button modes and the remotes operation. To change the settings on any channel, first select the relevant channel and then select the required settings for that channel.

This tab also has a general option to enable notification messages to be sent via the USB Serial port when the state of any of the channel or monitor controls change. This allows user developed control software to respond to these changes.

The second tab shows the Monitor Configuration options.

Fig 3-2: SCI Channel Configuration Screen.

Fig 3-3: SCI Monitor Configuration Screen.

Configuration Options 3

These settings control the operation of the AUTO CUE/ PFL button modes and the audio meter display type. This section also controls the USB Audio input CUE/PFL mode. This determines whether the USB Audio input channel is automatically routed to the monitor section. If enabled, the USB Audio input will be available on any of the monitor channels that have the AUTO CUE/PFL function enabled.

To store the configuration option settings onto the connected S0 v2, press the Save Settings button. The S0 v2 will then restart with the new option values.

The current configuration option settings on the connected S0 v2 can be reloaded into SCi at any point by pressing the Reload Settings button. Any changes made since the settings were last reloaded or saved will be lost.

The last tab, Info & Updates allows the current configuration settings in SCI to be saved to a file on the computer. This makes it easier to configure multiple units with the same configuration settings. First select the required settings in the Channel and Monitor Configuration tabs, and then press the Save Configuration button. A save dialog will be displayed allowing the filename to be entered. Upon pressing the save button the current settings will be stored in the selected file. These settings can then be loaded whilst connected to a different unit by pressing the Load Configuration button. The settings stored in the file will be loaded into SCI and automatically uploaded into the connected S0 v2.

3 Configuration Options

Fig 3-4: SCI Info & Updates Screen.

The Restore Defaults button returns the configuration options on the connected S0 v2 to factory default settings.

The Firmware Update function allows the S0 v2 firmware to be regularly updated with new features and bug fixes. New firmware releases will be made available on the Sonifex website. To update the firmware, press the Update button and select the firmware file. The update only takes a few minutes and the process can be monitored on the progress bar on SCi and the meter display on the S0 v2, which gradually changes from fully illuminated to off. When the update is complete, the S0 v2 will automatically reboot and SCi will reconnect and show the new firmware version number.

The S0 v2 is designed to power up in the same state it was in when power was removed. It is possible to clear these saved settings so the mixer starts with all buttons and routing switched off, except for those enabled by the default configuration options:

1. Ensure all faders are closed.

2. Press and hold the Monitor EXT1, Monitor AUTO CUE/PFL, Presenter AUTO CUE/PFL and Guest AUTO CUE/PFL buttons.

3. Press Reset Switch as shown in image below. A single sweep on the LED meters indicates that the saved states are being reset. The buttons can be released.

4. A dual sweep on the LED meters indicates return to normal operation.

Fig 3-5: Reset Switch.

Configuration Options 3

Reset Switch

4 USB Audio

4. USB Audio

The USB Audio port on the S0 v2 allows live audio transfer between the mixer and a computer or other compatible USB Audio device. This effectively provides an additional input channel to the mixer that can be routed to channels 5-8, and a simultaneous output which contains the audio from either the PGM or REC output. The stereo USB Audio port is configured to run at a sample rate of 44.1 kHz with 16 bit samples in both directions.

No special software drivers are required; simply connect a standard USB cable between the S0 v2 and the computer. To check that a connection has been made, open the Device Manager in Microsoft Windows®, and locate the Sound, video and game controllers section. A new entry should appear “S0 v2 USB Audio”.

USB Audio Output from the S0 v2

The USB Audio output from the S0 v2 is, by default, encoded from the audio signal on the REC bus. It is possible to change this so that the USB Audio output is encoded from the audio signal on the PGM bus. This involves changing 2 jumper settings that are located on the PCB directly under the front panel on the S0 v2. Contact Sonifex Technical Support for details on how to change these settings.

Once the USB Audio port is connected to a computer, it is possible to listen to and record the audio. Microsoft Windows® identifies the USB Audio input from the S0 v2 as an additional Line input recording device with the device name S0 v2 USB Audio.

USB Audio Input to the S0 v2

Microsoft Windows® identifies the USB Audio output from the computer as an additional Line output playback device with the device name S0 v2 USB Audio. The USB Audio input to the S0 v2 is decoded and routed to channels 5-8. The USB Audio input on these channels is selected when the INP1/INP2 button is illuminated amber. It might be necessary to change the configuration options to enable this input to be selected. The USB Audio input can also be used as a pre-fade input such that the audio is automatically routed to any of the monitor and headphone outputs with AUTO CUE/PFL selected once audio is present.

Fig 4-1: PC Device List.

Connectors & Cabling 5

5. Connectors and Cabling

Many of the problems associated with installing and maintaining a mixing console are due to the use of poor cables or faulty connections. It is recommended that, wherever possible, pre-wired cables are purchased from recommended manufacturers. If you need bespoke cables making, please ensure that a qualified engineer carries out the work.

The main types of connectors used with the S0 v2 mixers are the following:

XLR 3 Pin Connectors

The following diagram shows the pin details for the 3 pin XLR sockets and plugs:

MIC Inputs PGM Outputs

Pin 2. Hot (In Phase) Signal

Pin 1. Ground (Screen) Signal

Pin 3. Cold (Out Of Phase) Signal

3 Pin Socket

(Female)

3 Pin Socket

(Male)

Fig 5-1: XLR 3 Pin Connectors.

RCA (Phono) Connectors

This connector is used on the LINE, AUX (Rear) and EXT1 inputs and the REC output.

Stereo Left & Right Inputs and Outputs

Inner. Hot (In Phase) Signal Outer. Ground (Screen) Signal

RCA Phono

(Female)

Pin 2. Hot (In Phase) Signal

Pin 1. Ground (Screen) Signal

Pin 3. Cold (Out Of Phase) Signal

6.35mm (¼”) ‘A’ Gauge Stereo Jack Plugs

This connector is used on the Monitor Loudspeaker output and the Presenter and Guest headphone outputs.

Tip – Left Signal

Ring – Right Signal

Sleeve – Ground (Screen) Signal

Fig 5-3: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs Used For Headphones And

Monitor Outputs.

This connector type is also used on the Remote Outputs.

Tip – Remote Start Open

Collector Output

Ring – Remote Stop Open

Collector Output

Sleeve – Ground (Screen) Signal

Fig 5-4: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs Used For Remote Outputs.

This connector type is also used on the Light Control Output.

Tip – Normally Open

Switch to Sleeve

Ring – Normally Closed

Switch to Sleeve

Sleeve – Switch Common

Fig 5-5: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs Used For Light Control Output.

Fig 5-2: RCA (Phone) Connectors.

6 Technical Specification

Technical Specification For S0 v2

Mic Inputs Audio Specification

Input Impedance: хϭŬϱɏĞůĞĐƚƌŽŶŝĐĂůůǇďĂůĂŶĐĞĚ

Input Gain Range:

Frequency Response:

Mic input E.I.N.: ͲϭϯϬĚǁŝƚŚϭϱϬɏƐŽƵƌĐĞ

Preset pot +24dB to +67dB ref -50dBu, TRIM pot ± 15dB

40Hz to 20kHz –1dB, +0dB

Outputs Audio Specification

Output Impedance:

Maximum Output:

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PGM output: +26dBu balancedREC output: Level:+16dBu unbalanced

Phantom Power: +48V to each mic input (SCi selectable)

Common Mode Rejection Ratio:

Pan Range: Off/-3dB Centre/Off

Stereo Line Inputs Audio Specification

Input Impedance: хϮϬŬɏĞůĞĐƚƌŽŶŝĐĂůůǇƵŶďĂůĂŶĐĞĚ

Input Gain Range:

Frequency Response:

Noise (20Hz20kHz):

Total Harmonic Distortion:

Balance Range: ± 6dB

> 60dB typically

+10dB ref 0dBu at PGM output, TRIM pot ± 15dB

20Hz to 20kHz –0.5dB, +0dB

-92dBu ref 0dB (fader down, no routing)

0.015% at 1kHz, 0.015% at 10kHz ref +8dBu

Input & Output Connections

Audio Inputs:

Audio Outputs: PGM: REC:

Monitor Inputs: 1 x Stereo pair RCA phono sockets

Monitor Outputs: 5 x 6.35mm (1/4”) stereo jack sockets

Remote Outputs: 9 x 6.35mm (1/4”) stereo jack sockets (one per

Telephone: 2 x RJ11 6/4 (1 x line, 1 x handset)

USB Audio: 1 x Type-B receptacle

4 x Microphone XLR-3 pin sockets 12 x Pair stereo line RCA phono sockets 1 x Pair stereo aux RCA phono sockets 1 x Stereo aux 3.5mm jack socket

2 x XLR-3 pin plug (balanced) 1 x Stereo pair RCA phono sockets

(2 x presenter, 2 x guest, 1 x loudspeaker)

channel) 1 x 6.35mm (1/4”) stereo jack socket for light control

USB Serial: 1 x Type-B receptacle

Mains Input: Filtered IEC, continuously rated 85-264VAC,

Fuse Rating: Anti-surge fuse 2A 20 x 5mm

Equipment Type

S0 v2: S0 v2 radio broadcast mixer

Physical Specification

Dimensions (Raw):

Dimensions (Boxed):

Cut-Out Dimensions:

Weight: Nett: 8.5kg Gross: 10.12kg

47-63Hz, 45w nominal, 50w peak

48.3cm (W) x 35.6cm (D) x 12.5cm (H) 19” (W) x 14” (D) x 4.9” (H)

67cm (W) x 44cm (D) x 25cm (H)

26.4” (W) x 17.3” (D) x 9.84” (H)

44cm (W) x 34.7cm (D)

17.32” (W) x 13.66” (D)

Nett: 18.7lb Gross: 22.26lb

Technical Specification 6

7 Appendix 1

7. Appendix 1: S0 v2 – USB Serial Command Set

The USB Serial Port Settings are: BAUD: 115200, DATA BITS: 8, STOP BITS: 1, PARITY: EVEN. All commands sent to the S0 v2 should be terminated with Carriage Return.

Get serial number

Returns the factory set serial number of the unit Command to S0 v2 Response from S0 v2 SER: SER:ccccccc where c = 7 digit serial number

Get unit ID

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Command to S0 v2 Response from S0 v2

UID: UID:S0 v2

Read firmware version information

Returns the firmware version number Command to S0 v2 Response from S0 v2 VER: VER:m.nnn where m = major version number nnn = minor version number

ZĞƚƵƌŶĂůůƐĞƫŶŐƐƚŽĚĞĨĂƵůƚƐ

ZĞƐĞƚƐĂůůƐĞƫŶŐƐƚŽĨĂĐƚŽƌǇĚĞĨĂƵůƚƐ

Command to S0 v2 Response from S0 v2

DSU: ACK:

Get channel control status

Returns the control states for the specified channel Command to S0 v2 Response from S0 v2 STAC:c STAC:ss if the command was successfully completed ERR if the parameter is out of range where c = channel identifier (1-9), ss = channel status (0-3Fh) channel status = bits 1:0 = input selected (0=input1, 1=input2, 2=input3)

bit 2 = PGM bus state (0=off, 1=on) bit 3 = REC bus state (0=off, 1=on) bit 4 = PFL bus state (0=off, 1=on) bit 5 = fader state (0=down, 1=up)

Get all channels control status

Returns the control states for all channels Command to S0 v2 Response from S0 v2

STAC:0 STAC:11_22_33_44_55_66_77_88_99

where 11 = channel status 22 = channel 2 status 33 = channel 3 status 44 = channel 4 status 55 = channel 5 status 66 = channel 6 status 77 = channel 7 status 88 = channel 8 status 99 = channel 9 status channel status = bits 1:0 = input selected (0=input1, 1=input2, 2=input3)

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bit 5 = fader state (0=down, 1=up)

Get START button LED status

Returns the status of the START button on the specified channel Command to S0 v2 Response from S0 v2 STAS:c STAS:s if the command was successfully completed ERR if the parameter is out of range where c = channel identifier (1-9) s = LED state (0-9) 0 = off 1 = red 2 = green 3 = amber 4 = flash red 5 = flash green

Appendix 1 7

6 = flash amber 7 = flash red/green 8 = flash red/amber 9 = flash green/amber

Select input on a channel

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Command to S0 v2 Response from S0 v2 RCIP:ci ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range

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Select PGM on a channel

Enables/disables PGM on the specified channel Command to S0 v2 Response from S0 v2 RCPG:cp ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range where c = channel identifier (1-9) p = PGM control (0=off, 1=on)

Select REC on a channel

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Command to S0 v2 Response from S0 v2 RCRE:cr ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range

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Select PFL on a channel

Enables/disables PFL on the specified channel Command to S0 v2 Response from S0 v2 RCPF:cp ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range where c = channel identifier (1-9) p = PFL control (0=off, 1=on)

Select START on a channel (Line Hold for channel 9 if input 1 is selected)

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Command to S0 v2 Response from S0 v2 RCST:cs ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range

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Set START button LED states

Sets the state of the START button on the specified channel Note: Only valid when the Remote Mode for the current input on the specified channel is set to USB Serial Control Command to S0 v2 Response from S0 v2 RCSL:cs ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range where c = channel identifier (1-9) s = LED state (0-9) 0 = off 1 = red 2 = green 3 = amber 4 = flash red 5 = flash green 6 = flash amber 7 = flash red/green 8 = flash red/amber 9 = flash green/amber

^ĞƚƚŚĞŵŽŶŝƚŽƌŚĞĂĚƉŚŽŶĞƐĞůĞĐƟŽŶƚŽW'D

Routes the PGM bus to the monitor and headphone outputs Command to S0 v2 Response from S0 v2

RMPG: ACK

Set the monitor/headphone selection to REC

Routes the REC bus to the monitor and headphone outputs Command to S0 v2 Response from S0 v2

RMRE: ACK

7 Appendix 1

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Routes the EXT1 input to the monitor and headphone outputs Command to S0 v2 Response from S0 v2

RMBC: ACK

Select AUTO PFL for the monitor output

Enables/disables AUTO PFL on the monitor output Command to S0 v2 Response from S0 v2 RMAP:a ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range where a = AUTO PFL control (0=off, 1=on)

Select AUTO PFL for the presenter headphone output

Enables/disables AUTO PFL on the presenters headphones Command to S0 v2 Response from S0 v2 RPAP:a ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range

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Select SPLIT PFL for the presenter headphone output

Enables/disables SPLIT PFL on the presenters headphones Command to S0 v2 Response from S0 v2 RPSP:s ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range where s = SPLIT PFL control (0=off, 1=on)

Select AUTO PFL for the guest headphone output

Enables/disables AUTO PFL on the guests headphones Command to S0 v2 Response from S0 v2 RGAP:a ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range

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Select TALKBACK for the guest headphone output

Enables/disables TALKBACK on the guests headphones Command to S0 v2 Response from S0 v2

RTBK:t ACK if the command was successfully completed ERR if the command could not be completed or the parameters are out of range where t = TALKBACK control (0=off, 1=on)

ŽŶƚƌŽůEŽƟĮĐĂƟŽŶƐ

Sent from the S0 v2 when the associated control changes state.

Start button press notification

Signal channels’ start button has been pressed Command from S0 v2

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