Philips SM30 Mounting in a 19 rack, Removing Feet, Calculating Required Rack Space, General Rules

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5.4Mounting in a 19” rack

The SM30 Control Centre is available in two versions:

LBB 1280/30 for table top use including the cover.

LBB 1280/40 for 19” rack mounting, without cover but including the mounting brackets.

Removing Feet

WARNING: Before attempting to open the housing, the mains lead and the 48 V DC battery plug should be disconnected. It is not sufficient to merely switch off the ON/OFF switch on the front panel.

The feet of the Control Centre may be removed for rack mounting if space is limited. To remove the feet simply unscrew the cross-headed screw which is recessed in the centre of each foot.

If rack space is not limited however, it is preferable to leave the feet in position and to mount a narrow blank rack panel beneath the unit. If the Control Centre then has to be removed for servicing, the feet will protect the surface of furniture from being

scratched by metal components of SM30.

Calculating Required Rack Space

To simplify ordering of modular units and panels to fit into standard 19” rack units, Philips have chosen a standard height ‘HE’ equal to 44.55 mm (1.75 inches). Each SM30 Control Centre, for instance, is 3 HE high, requiring 133.65 mm of rack space. The use of the HE unit eases the problem of calculating the number of equipment housings, blank panels, etc. that will fit into a rack.

General Rules

Certain rules should be observed when planning the equipment layout in a rack:

1To ensure that the SM30 display is clearly visible, and the controls are easy to operate, the Control Centre should be mounted at a height which makes it easily accessible (head, or shoulder height if possible).

2Cassette front loaders, tuner scales, and other frequently used equipment, should be mounted at a height which makes their front panels clearly visible to the operator.

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Fig. 5.4 - Rack mounting

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Contents SM30 Contents Control Centre IntroductionProgramming Signal generator Emergency Power Supply +48 VDCBlock diagram SM30 plug-in modulesBlock diagram Typical Operation System OperationActivation of Control Relays Power on delay Volume Control Override RelaysAlarm interrupt Signal description Alarm TonesTime signals Front panel controls ON/OFF Power Switch fig.4.1AProgramming Keys fig.4.1C Alpha-Numeric LCD Display fig.4.1D Music Function Keys fig.4.1ESM30 basic modules Power Supply ModuleLine Output Module Setting UP the Hardware GeneralRemoving Module Blank Panels Opening the housingMounting the Modules Volt Emergency Power Supply Voltage SettingEarth Terminal ground Mounting in a 19 rack Removing FeetCalculating Required Rack Space General RulesOne Channel System fig.5.5.2 Connecting amplifiersRack Mounting 1 Two channel system 2 One channel system Electret condenser microphone Built-in CompressorBalanced Line Level output Operating controls Numeric Keypad fig.6.1JCall Station ‘Press-To-Talk’ Key fig.6.1HInstallation Loudspeaker Zone Template AdjustmentsLED Intensity Preset Using the Call Station Using the Keypad to make a CallPage Installation Mounting in the Control Centre Adjustments Volume Level ControlsCall Station Input Module CSM Connection of Call StationsOperation Remote Switching Function Microphone Input Module MIMLine Input Facility Bass Cut FacilityAdjustments Gain Control Potentiometers Connection of MicrophonesControl Input Module CIMWiring control inputs Direct routingAdjustments Output Volume Control Automatic Gain ControlHeadphone Monitoring Microphone InputSafety Features Numerical order, commencing with messageRecording a Message Recording over an Existing MessageRemote Location Recording Music Input ModuleMUM Music Source InputsProgramming Software routing to zones Display music source statusZRM Zone Relay ModuleTerminations Coupling Zone Relay Modules Multiple Amplifier ConfigurationsControl Relay Module CRMRemote Volume Control Overrides InstallationWiring Control Relays Programming Power-on delayProgramming Program step Selection User passwordSummary SM30 User Programming User Programming Mode IntroductionGeneral User ProgramCall Stations Signal number selection Main menu selectionCall Station number selection Key Pad SelectionKey Signal number selection Function Key number selectionKey programming selection Key Priority selectionKey Music volume up Key Music volume downKey Relay switching selection Key Music on/offMicrophone number selection MicrophonesCall Routing to Zones Microphones Programming next microphoneControl Inputs Control input number selectionControl input Priority level selection inputControl Inputs Programming Control RelaysSM30 System Specification GeneralMains Supply Audio signal level diagram DL LReturn to ‘RUN’ mode Error MessagesMusic Routing Music RoutingPage Supplement Instructions for installation Contents Installer programming stepsselection Extended Call Station ProgrammingSetup Installer mode System downLanguage selection Store hardwarePower-on Delay POWER-ON DelayDelay time Music Input TextSelect Language Alternative Music Input TextInput number selection Alternative text selectionStoring Hardware Selecting Amplifier Configuration Store Hardware Amplifier ConfigurationConfiguration display Altering selectionRemote Volume Control Music Volume Step/RepeatMode display Volume Control Routing Limits Call Override Relays Station Override RelaysRelay selection Call Station selectionRouting setting Routing LimitsDirect Routing Current zone displayClear Memory Control Alarm Mode Power-on delay System downClearing Memory 14.2 ConfirmationFlexible F-keys Extended Call Station Extended Call Station ProgrammingSelection Call Station input number 17.3 ConfirmationMPL if IE R C ONF IG Xxxxxx R MA N Singl E AMP LIF IE RS MU SIC Z on ES SE T ROU TIN G VIA Inst AL LE R P Rogr AM EL ECT PR Ogram CT L AL AR M MOD E SEL ECT FUN Ction MIC ROP Hone Priority Page Page 3922 988 33415 20/97
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