P-squared Srm User manual

Operations Manual

Last Updated: 11/10/2013

P Squared Ltd

Limited Warranty

Definitions

‘the Company’ means P Squared Ltd and where relevant includes

companies within the same group of companies as P Squared 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 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, acknowledgment, authority or

agreement of the Company means in writing and only by a director

of the Company.

Warranty and Liability

Important: the purchaser is advised to read this clause

(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

12 months of the date of despatch 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.

(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.

Warranty Returns

Please contact P Squared to obtain a returns authorisation prior to returning any

goods for warranty repair.

Returns Contact:

Returns

P Squared Ltd

1-2 Maritime House

Livingstone Road

Hessle

East Riding Of Yorkshire

HU13 0EG

Telephone: +44 1482 350700

Fax: +44 1482 350701

Email: [email protected]

Web: www.psquared.net

This Warranty Does Not Affect Your Statutory

Rights

If you need to return goods to P Squared Ltd, for whatever reason,

please contact P Squared Ltd beforehand to receive a returns reference number.

SRM Operations Manual

Table of Contents

Contents

Table of Contents....................................................................................................................................3

Introduction ............................................................................................................................................5

Layout & Dimensions ..............................................................................................................................6

Channel Overview................................................................................................................................8

Microphone / Line Channels (Channels 1-4)...........................................................................................9

Channel Layout & Function.................................................................................................................9

Rear Panel Layout & Function...........................................................................................................11

Myriad / Line Channels (Channels 5-8).................................................................................................12

Channel Layout & Function...............................................................................................................12

Rear Panel Layout & Function...........................................................................................................14

Telephone / AUX Channel (Channel 9) .................................................................................................15

Channel Layout & Function...............................................................................................................15

Rear Panel Layout & Function...........................................................................................................17

Monitor Section ....................................................................................................................................18

Layout & Function.............................................................................................................................18

Rear Panel Layout & Function...........................................................................................................21

Setting Up The Myriad Intelligent Interface (MII).................................................................................23

What Is MII?......................................................................................................................................23

Start Button Colour Status Key .........................................................................................................23

Starting & Stopping Playback In Myriad From The SRM...................................................................24

Preview Cart Player Mode ................................................................................................................24

Virtual Mic Live Light.........................................................................................................................24

Setting Up The Myriad Intelligent Interface .....................................................................................25

Trouble Shooting MII ........................................................................................................................30

Myriad Reports ‘Invalid Port Number’ On Start-up ......................................................................31

Using The Telephone Interface.............................................................................................................31

What You Will Need..........................................................................................................................31

Connecting The Telephone Equipment To The SRM ........................................................................32

Using The Telephone Interface.........................................................................................................33

Procedure For Making A Call And Routing It Through The Mixing Desk.......................................34

Recording A Telephone Call While You Are ‘On Air’, For Broadcasting Later...............................36

Trouble Shooting...............................................................................................................................38

Reducing Noise Using The R-BAL and C-BAL Adjustments ...........................................................38

SRM Setup Mode ..................................................................................................................................39

Restore Factory Defaults...................................................................................................................40

Change LED Meter Between PPM & VU Modes ...............................................................................40

Switching On 48v Phantom Power On/Off Microphone Channels...................................................41

Other Channel Configuration –Advanced Settings ..........................................................................45

Switching To Setup Mode .............................................................................................................45

Selecting The Settings Page You Want To Work With ..................................................................46

Available Settings..........................................................................................................................48

Settings Page 1 - Input Select Modes............................................................................................48

Settings Page 2 - PGM & REC Button Modes (available on all channels) .....................................49

Settings Page 3 - PFL Modes (available on all channels)...............................................................49

Settings Page 4 –Remote Modes .................................................................................................50

Saving Settings And Existing Setup Mode.....................................................................................51

Technical Specifications........................................................................................................................52

Notes:....................................................................................................................................................58

P Squared Contact Details.....................................................................................................................59

SRM Operations Manual

Introduction

The SRM is a small, fixed format broadcast audio mixer designed to provide a versatile and robust

mixing solution for small and medium scale radio stations.

We set out to design a mixer that would combine key broadcast radio features with a layout that

would appeal to novice and broadcast professionals alike. The result is a mixer that includes many

features we felt were lacking in the alternatives but still retains simplicity and clarity to the end user.

The SRM was also designed to work with the Myriad radio playout software. The Myriad Intelligent

Interface provides a consistent data link between the SRM mixer and your Myriad playout system

providing un-paralleled levels of interactivity between the two systems and blurring the lines

between software and broadcast hardware.

The SRM is a fixed format, nine channel broadcast mixer boasting the following key features:

User friendly broadcast mixer

Clear, simple layout with no jargon

Designed for school & community radio

Nine multi-function channel mixer

Built in telephone interface

Built in headphone volume limiter

Large, simple LED volume display

Remote output for fader starts

Speaker muting when ‘Mics’ are on

External mic-light switching output

‘Program’ and ‘record’ outputs

‘Aux’ input for iPod or MP3 players

Four microphone/line channels

Four Myriad channels

Switchable telephone/AUX channel

Connects to Myriad via USB cable

Start buttons for Myriad Cart Players

Channel lights show Myriad Cart status

Rack or flush mountable

Guest headphone ‘talkback’

Reliable, low cost mixing solution

For more detail on The SRM mixer, please visit www.thesrm.co.uk

Layout & Dimensions

Dimensions

Width: 482.6mm

Height: 355.0mm

Depth: 107mm

SRM Operations Manual

Channel Overview

4 x Mic / Line Channels

Selectable microphone or stereo line inputs.

Phantom power (48v) optionally available in ‘mic’ mode.

Hardware output available for ‘remote start’ when in ‘line’ mode.

Selectable PGM and REC outputs.

4 x Myriad / Line Channels

Selectable Myriad or stereo line inputs.

When in Myriad mode, channel status is controlled by Myriad via USB connection. Start buttons also

control Cart Players in Myriad.

Hardware output available in ‘Line’ mode for remotely starting external devices.

Selectable PGM or REC outputs for flexibility.

1 x Telephone / AUX Channel

Select between telephone interface mode and stereo ‘AUX’ inputs.

When in telephone, you can connect an analogue telephone line to the SRM to allow you to make

and receive phone calls through the mixing desk (standard handset required).

The ‘AUX’ stereo input provides a convenient additional input for external devices such as MP3

players.

Monitoring & Headphones

The built in LED volume meters can be set to display output in PPM (default) or VU modes which are

selectable via the SRM Setup Mode. The LED meters can be switched to display volume for either

PGM (Program Output Bus), REC (Record Output Bus) or Broadcast Listen (external input used for

‘off air’ monitoring).

The SRM includes built in headphone limiting to limit the maximum volume for presenter and guest

headphones. Guest headphone ‘talkback’ is also provided to allow the presenter to talk via the guest

headphones using Microphone Channel 1.

The Monitor volume control is used to control the speaker volume level in the studio.

SRM Operations Manual

Microphone / Line Channels (Channels 1-4)

Channel Layout & Function

Channel Layout

Description

1 - Mic / Line Button: This button allows you to switch the channel

between the Microphone input and the stereo line level inputs (see rear of

the channel below). In addition, when in Mic mode, raising the channel

fader will operate the Light Control logic which can be connected to an

external ‘Mic Live’ light. When in Line mode, raising the fader will send a

signal out from the Remote Output (see rear of panel) for starting remote

devices such as CD players.

Button is illuminated when in Line Mode. Please note that this button can

be disabled using the SRM Setup Mode.

2 –PGM Button (Program Bus) –This button allows you to select whether

the output of the channel should be mixed into the Program Bus Output.

The Program Bus Output is the main mixing desk output which would

normally be connected to your transmission or encoding system. The

reason for this function is to allow you to de-select channels to be included

in main Program Bus Output but still use the channels (for recording etc).

Button illuminates when selected.

3 –REC Button (Record Bus) –This button allows you to select whether the

output from the channel should be mixed to the Record Bus Output which

would normally be connected to your Myriad system (or other playout

system). This function allows you to select which channels Myriad should

record, which is very useful when, voice tracking or recording telephone

calls (when live on air etc). Button illuminates when selected.

4 - Trim: The Trim control allows you to adjust the overall volume level for

the channel when the fader is in the upmost position. Basically, this allows

you to set how loud the channel should be when the fader is fully up. This is

very useful for setting relative levels between channels with different

source volumes.

5 - PAN / BAL (Balance): This control has two functions depending on

whether you are in Mic or Line mode. In Mic mode the control acts as a

PAN control which allows you to set the input bias for the channel to either

be left channel input or right channel input. In PAN mode, if you rotate the

knob all the way to the left then the right channel input will effectively

turned off.

The control switches to BAL (balance) mode when Line is selected which

does the same thing (i.e. allows you to alter the left / right bias) but turning

the know fully to the left will still allow some of the right hand channel to

be heard, it will not mute it fully as in PAN mode.

6 - Pre Fade: The button allows you to select the Pre-Fade mode for the

channel. The Pre-Fade mode allows you to listen to the channel without it

actually being sent to the PGM or REC outputs (see above) which is

essential if you want to check something prior to it going ‘on-air). To use

this feature, first pull the fader right down (otherwise it will be broadcast

anyway), then press the Pre-Fade button. You will now be able to hear

anything playing through your headphones (providing the Auto-Prefade

option in the monitor section is set –see Monitor Section) but it will not be

heard ‘on-air’.

This is an essential tool for radio. Let’s say you have a guest in the studio.

You need to check that their mic levels are ok and adjust the Trim on their

mic channel if they are too quiet or too loud. Simply pull down their mic

fader, press the Pre-Fade button and ask them to speak into the mic. You

will be able to hear them through your headphones but crucially you can

also see their ‘mic levels’ on the LED Meter (bar graph) so you can adjust

the channel Trim accordingly. Once you are happy, de-select the Pre-Fade

button and don’t forget to put their fader up when you want them to be

able to speak.

7 - Fader: The Fader is a linear volume control for the channel. By moving

the fader up or down, you will alter the volume of the audio source the

channel is connected to.

8 - Start Button: This button is only operational when in Line mode and it is

used to send a start signal to compatible external devices (such as some CD

players) via the Remote Start Output (see rear of channel).

SRM Operations Manual

Rear Panel Layout & Function

Channel Layout

Description

1 - Line Input: This RCA ( phono) input allows you to plug in a stereo

source that will be used by the channel when in Line mode. The source

should be domestic level (unbalanced) as found on most CD players and

hi-fi equipment. If you need to plug in a balanced source then you

should consult support@psquared.net for more information.

2 - Mic Trim: This small screw adjuster allows you to alter the base

amplification level for microphones plugged into the channel. This is in

addition to the Trim control on the channel itself. This control should

only be adjusted by a competent audio engineer.

3 - Mic Input –This XLR input is used to plug in a standard microphone

cable. The SRM can support both dynamic (un-powered) and condenser

(powered using 48v phantom power) microphones but you will need to

activate the phantom power option when using a condenser

microphone (see SRM Setup Mode for more detail).

4 - Remote Output: This output is only used when the channel is

switched to Line mode and it is used to send a ‘start’ signal to

compatible external devices such as some CD players. This Remote

Output is effectively a closing contact between the tip of the ¼” jack

and the sleeve.

Myriad / Line Channels (Channels 5-8)

Channel Layout & Function

Channel Layout

Description

1 - MYR / Line Button: This button allows you to switch the channel

between the Myriad input and the stereo line level inputs (see rear of the

channel below). In addition, when in MYR (Myriad) mode, the channel will

also interact with a correctly configured Myriad playout system via the

Myriad Intelligent Interface (USB) connection. This will alter the Start

button functionality to allow you to Play / Pause the corresponding Cart

Player in Myriad. The status of the Cart Player in Myriad will also be

displayed as colour changes on the Start button.