Bogen PI35A Intercom System User Manual
Contents
1. 1 8 watt 1 4 watt 1 2 watt 1 watt 2 watts 7 Line Matching Transformer 4 watts r Common Various wattage taps c BLK MODEL CA10A RED PRESS TO CALL SPEAKER LINES ANNUNCIATOR 16 LINE SCR25A Call ln Module The SCR25A module can be added to allow the annunciator indicators to light from a simple SPST call in switch Bogen model CA17 All call in switches must go back to the SI or PI on separate lines It will not allow annun ciator illumination from parallel connected call in switches described in the Voice call in section The SBA225 module simply pushes onto the connectors on the back of the SBA225 The figure below illustrates the connections to the rear of the SCR25A module SBA225 gt e e lt e _ _ eo _ lt lt gt lt lt Ae en 1 1 1 1 1 1 i 1 1 1 1 1 i 1 i 9 lt lt lt To tt ROOM SPEAKER 8 OHMS SEC ROOM SPEAKER Speaker Only CA 17 Call Switch From MCP35A 12V Terminal See 10 on Page 7 Connect only the 12V Terminal to this point Do not connect a ground lead to this point Use second pin to jump 12V DC to additional SCR25A panels2. 13 External Booster AMP 15 TWK351 Wire Converter 16 SCR25A Call InModule 17 CA17 Call In Switch EIA eens 17 SI35A Model Option Enhancements 18 Special Adjustments 19 Troubleshooting Guide 21 System Specifications 22 Accessory Equipment 000 eee eee 22 Unpacking Your Bogen equipment was carefully checked before leaving the factory inspect the shipping container and unit closely for improper handling If the unit has been damaged make an immediate claim to the distributor from whom it was purchased If the unit was shipped directly to you save all shipping materials and notify the carrier immediately and place a claim Wiring and Grounding Precautions The MCP35A master control panel of the PI and SI products operates from a 120V 60Hz AC source and con sumes approximately 100 watts The AC line cord is terminated in a three prong plug and should be plugged into an appropriate three wire grounded outlet It is important that the unit be properly grounded Three prong pigtail adapters may be used only if the ground lug is properly grounded Auxiliary Power Receptacle An 840 watt three wire grounded outlet is provided on the rear panel for power auxi
3. If the system s power requirements are greater than 35 watts and cannot be lowered it may be necessary to use an external booster amp The booster amp replaces the internal amplifier of the MCP35A Booster amp con nections are described later in this manual Time Tones A tone signal sounds through all speakers when the clock terminal is grounded through a closure from a master clock Reference call out 6 on page 7 12 Advanced Hook Ups External Emergency Mic It is possible to use a microphone Model MBS1000 with a contact closure to make an emergency announce ment The TELCO terminal on the back of the MCP35A control panel can be used to remotely trigger an emer gency page on the system Whenever the TELCO terminal is shorted to the GND terminal the MIC 2 input will become active and send audio to all rooms regardless of switch settings The figure below shows the required wiring BLK RED SHLD WHT GRN MBS1000 Note Jumper J3 on the TELCO MCP35A printed circuit board CLOCK GND PAGE must be set to the MIC2 posi eS cp tion this is the factory default le SG setting See the Special LO GND HI Adjustments section for jumper information MCP35A Emergency Telco Page Emergency pages can be triggered by devices other than a microphone To use a source other than a mic it is necessary to change the setting of a jumper inside the MCP35A control panel See the Spec
4. o amp terco PAGE External Booster Amp An external booster amplifier Bogen Model BPA60 can be connected when the application requires more than 35 watts Using an external amplifier disconnects the internal 35W amp of the MCP35A To install connect a RCA cable from the MCP35A LINE OUT jack to the Hi Z input jack on the rear panel of the BPA60 amplifier Connect another cable from the 25V output terminals of the booster amplifier to a 1 4 stereo phono plug wired as shown in the figure below Insert this into the jack labeled 25V BAL INPUT on the MCP35A SLEEVE a MB CONNECTOR FOR an FROM BOOSTER i 2 ove GND COM 25V 25V BPA60 CT 15 TWK351 Wire Converter The model TWK351 is an adapter used in instances where there is existing 3 wire 2 conductor shield room wiring The TWK351 cannot be used with the SCR25A module If 3 wire operation using the TWK351 wire converter is desired CA10A call switches must be used CA11A Call In switches will not work in this application To install the TWK351 simply insert it between the 9 pin connector labeled TO SWITCHBANK on the rear panel of the MCP35A and the 9 pin control cable on the first SBA225 panel Only one TWK351 is required per system 8 ohm sec 8 ohm spkr WIRING DIAGRAM SHOWING 2 WIRE CALL IN USING THE TWK351 SBA225 OR S SBA325
5. However it is best to tap the speakers at the lowest acceptable power tap in order to ensure that enough speakers can be connected to the system without overloading the system amplifier The chart below shows the wire colors and power taps for the T725 transformers used in all Bogen distributed speakers For SI35A and PI35A applications use the 25V column for speaker connections Caution Do not attempt to connect a 25V speaker directly to the MCP35A using GND as one of the connecting points This could seriously damage the MCP35A because the unit uses a balanced output when con nected to the speakers lines The MCP35A control panel of the Pl and SI contains an internal amplifier with 35W power handling capability Therefore the combined power of all the system speakers cannot exceed 35W To determine the required power that the system amplifier must handle add up all the power taps selected for all the speakers in the sys tem This is the total system power requirement If the total of the speaker power taps is too high for the sys tem to handle it may be necessary to tap the speakers at the next lowest setting in order to keep from overload ing the amplifier In many instances the required speaker tap setting will be either 1 4 or 1 2 watt you should also factor in 20 additional power loss through wires transformers etc as a safety margin The MCP35A s 35 watt amplifier should provide sufficient power for most applications
6. 18 Special Adjustments J3 ea N Telco Page Mic 2 Privacy Tone J5 Defeat Phantom Power bN Mic 1 Privacy Tone J1 R74 Phantom Power Volume Mic 2 ae J2 Time Tone Emergency Page R39 Monitor Speaker R75 Leal Volume Volume Mute J4 Gain Adjustments Screwdriver adjustable INPUT GAIN controls are located on the rear panel for MIC 1 MIC 2 AUX TEL PAGE TALK and LISTEN Set the controls so that signal clipping cannot occur Proceed as follows 1 Apply input s to the desired channel s 2 Set the corresponding front panel control s to maximum 3 Adjust the appropriate Input Gain control looking at the rear panel turn clockwise to increase or counter clockwise to decrease gain so that the red overload LED lights then turn counterclockwise only until the LED is extinguished Warning High voltages are present within the MCP35A The unit should not be operated without covers in place Internal controls are provided to set the level of emergency page volume privacy tone volume and time tone volume These controls are factory set under normal circumstances no further adjustment is required If adjust ment is needed unplug the MCP35A and remove it from the enclosure Remove the top cover and make an approximate adjustment Replace the top cover and plug the unit back in Test if the new set volume is accept able Repeat procedure
7. Jumper Settings see screened drawing on the SCR25A board 1 Ensure that jumpers J1 J25 are positioned to the left toggle position as shown 2 Ensure jumper J26 is positioned towards the pin side Multigraphic position of the SCR25A module CA17 Call In Switch The CA17 call in switch is a SPST call in switch It must be used with the SCR25A module in order to light the call annunciators on the SBA225 room selector panel The wiring of the CA17 is shown in the drawing above 17 SI35A Model Option Enhancements The SI35A has provisions to add up to 2 additional SBA225 switchbanks Simply remove the blank panels and replace with a switchbank Make connections as shown in the diagram below An auxiliary music source such as the Bogen CR100A Radio Cassette Player or TP30D Tuner can also be added to the SI35A Install the component in the appropriate rack panel and make audio connections to the MCP35A AUX input Use the auxiliary power outlet on the MCP35A to power the auxiliary equipment Note Mounting a radio in the cabinet will limit the number of SBA225 panels that can be installed to two because of the physical size of the cabinet Mounting the music source outside the cabinet will still allow for three SBA225 panels All components may be rearranged in the cabinet to suit the preferences of the user Additional SBA225 Panels Optional Cassette PESA Tuner EE a a aa AWA CR100A VO SBA225 SBA225 SBA225
8. Lo Z balanced MIC inputs Hi Z unbalanced AUX input Telco Page 25V Booster input Output 25V Balanced line Line Out to booster Input Sensitivity for rated output Program Mic Input 300mV balanced Lo Z AUX 100mV unbalanced Hi Z Telco Page 100mV unbalanced Hi Z Intercom Listen Mode 300mV balanced Lo Z Console Mic 1mV unbalanced Lo Z Power Requirements 120 volts 60Hz AC 100W maximum Controls and Indicators Front Panel Program Selection MIC 1 MIC 2 AUX Level MONITOR LISTEN PROGRAM Distribution ALL ROOMS EMERGENCY PRESS TO TALK Indicators PROGRAM TALK LEVEL LEDs Rear Panel Input Gain MIC 1 MIC 2 AUX TELCO PAGE TALK LISTEN Enable Disable MIC 1 CONSOLE MIC Internal Gain Emergency Page Supervisory Tone Time Tone Enable Disable MIC 2 Telco Page Supervisory Tone Phantom Power MIC 1 Monitor Mute Oscillator Frequencies Time Tone 750Hz Supervisory Tone Repeating 500Hz Call in Tone Repeating oscillates between 500Hz and 750Hz Switching freq 16Hz Dimensions PI35A 20 1 2 W x 8 1 2 H x 11 D SI35A 20 1 2 W x 12 H x 11 D Shipping Weight P 35A 29 Ibs SI35A 35 Ibs Finish Black panels with instructions and color coded guidelines printed on the front panel Accessory Equipment Model SBA225 Three Channel Program A Off 0 Intercom C 25 Station Switchbank Model CR100A Cassette Player Radio Model TP30D Digital Tuner Model MBS1000 Desktop P
9. 1 2 3 INTERCOM SELECT ROOM PLACE SWITCH IN GREEN C POSITION ADJUST LISTEN LEVEL OPERATE PRESS TO TALK RELEASE TO LISTEN SWITCH PRESS TO TALK RELEASE TO LI ISTEN PROGRAM TALK LEVEL oO PROGRAM MONITOR LISTEN 3 4 5 6 7 8 CONSOLE MIC Used as microphone 1 or in conjunction with the emergency page or press to talk release to listen intercom push buttons This mic is always used for two way intercom calls using the green button and emergency paging using the red button No external mic can replace the console mic for these functions EMERGENCY PAGE Red push button Used to make announcements to all speaker stations Announcements made using this button override all program distribution and or switchbank settings PROGRAM DISTRIBUTION Push buttons Used to make input source selections Choose from or mix input from MIC 1 console or external microphone MIC 2 external microphone or AUX tuner cassette player as desired ALL ROOMS Push button Used to distribute a program to all speaker stations with selector panel switches set to either the A or O channel INTERCOM PRESS TO TALK RELEASE TO LISTEN Push button Used to communicate with the speaker station selected from switchbank channel C This does not affect program distribution to other sta tio
10. Note J1 should be in the OFF position when the console mic is connected to the MIC 1 input Privacy Tone Defeat Shunt J5 enables disables the supervisory tone feature Move the shunt to the OFF position to disable the supervisory tone Note When the privacy tone is disabled a short 1 second audio interruption will be noticed every 15 seconds when intercom communication is in progress 20 Troubleshooting Guide MCP35A Troubleshooting Procedure If a problem exists on the MCP35A certain steps should be taken to find the problem This test relates to the Program Amplifier All Call or Emergency The first indication of a problem will appear on the three level indi cators at the front of the unit They are green yellow and red If there is no problem the green yellow and or the red LED should flicker whenever audio is present depending on the signal strength A problem is indicated when the red LED does not flicker no matter what level the pro gram control is set to To find the problem follow this simple procedure 1 Disconnect the switchbank s SBA225 from the MCP35A and depress the emergency button While speak ing into the built in microphone adjust the Program Level Control and check the level indicators as described above If all three indicators can be made to light depending on the output level control setting then the MCP35A is okay 2 Connect only the first switchbank if more than one is being used With the spe
11. Power Intercom Systems Models PI35A amp SI35A Installation amp Operation Guide Downloaded from http www guardianalarms net 1997 Bogen Communications Inc 50 Spring St Ramsey NJ 07446 All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Bogen Communications Inc Notice The information contained in this document is subject to change without notice and should not be construed as a commitment by Bogen Communi cations Inc Bogen Communications Inc assumes no respon sibility for any errors that may appear in this docu ment nor does it make expressed or implied war ranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular pur pose Bogen Communications Inc shall not be liable for incidental or consequential damages in connection with or arising out of the furnishing performance or use of this document and the equipment which is describes WARNING The Warning label calls attention to a procedure prac tice or the like which if not correctly performed or adhered to could result in damage to the unit or per sonal injury Do not proceed beyond a warning label until the indicated conditions are fully understood and met Publication No 54 5034 01r2 0003 Printed in USA Contents Unpacking IAA 4 Wiring
12. aging Microphone Model WMT1A Matching Transformer Model TAMB Telephone Access Module Model TPAP Series Remote Page Phone Model SCR25A Call In Module Models CA10A CA11A CA17 Call In Switches Model BPA60 Power Amplifier Model TWK351 Wire Converter Model S86T725PG8W 25 70V Ceiling Speaker Model WBS8T725 25 70V Wall Baffle Speaker Model 2518 Connector Kit for 18 Ga Wire Model 2520 Connector Kit for 20 Ga Wire Model 2522 Connector Kit for 22 Ga Wire 22 BOGEN COMMUNICATIONS INC 50 Spring Street Ramsey NJ 07446 U S A Tel 201 934 8500 Fax 201 934 9832 web www bogen com
13. aker load still connected check the level indicators again 3 If the MCP35A LED s still indicate a problem when connected to the switchbank each speaker location on that switchbank being tested should be removed one at a time until the level indicators show a normal out put The speaker and cable associated with that location should then be checked 4 Follow the same procedure connecting each successive switchbank until the troublesome SBA225 panel or speaker load is found 5 If the MCP35A is tested without the switchbank and the three LED s do not light indicating full output then the 35 watt program amplifier of the MCP35A may be defective Contact the Bogen Applications Engineering Department for assistance If it appears that there is no intercom communication between the unit and a speaker station the 20 watt intercom amplifier inside the MCP35A may be defective Contact the Bogen Applications Engineering Department for assistance Caution Do not attempt to connect a 25V speaker directly to the MCP35A using GND as one of the connecting points This could seriously damage the MCP35A because the unit uses a balanced output when con nected to the speaker lines 21 System Specifications Rated Output Program 35W RMS Intercom 20W RMS Frequency Response Program 1 3dB from 80Hz to 15kHz Intercom Shaped for maximum intelligibility Distortion Less than 1 at rated power and bandwidth Inputs Two
14. al junction box BANK PRESS electrical junction box TOCALL A 4 S si G G CA10A Wiring Schematic CA11A Wiring Schematic with Privacy Voice Call In Feature Voice call in is not recommended for new installations Pre existing intercom systems may already have call in switches that are wired in parallel with all the other call in switches In this instance the MCP35A voice call in feature can be used With this style of operation a room must press the call in switch and speak into the room speaker The built in speaker in the MCP35A will monitor this call so that people near the control panel will hear it Typically the caller will say what room the call is being made from The room selector switch for that room can then be set for a two way intercom conversation Voice Call In Wiring Contact the Bogen Application Engineering Department for information regarding this type of application 11 Speakers and Speaker Wiring The MCP35A control panel of the SI and PI products is designed to use 25 volt distributed speakers These speakers have line matching transformers with various power level taps 8 ohm speakers or speakers without line matching transformers cannot be used with the SI and PI products Distributed speakers can be tapped at various power levels and this is determined by which wire from the speaker s transformer is used for connection The user must determine which power tap gives acceptable vol ume in a given location
15. amp Grounding Precautions 4 Auxiliary Power Receptacle 4 Maintenance amp Service 4 Introduction 5 Description IIIA So Re en tat ee a ed 5 FOatUneS enn a N eared inde trey ta dats fee 5 MCP35A Control Panel 6 SBA225 Speaker Selector Panel 8 Basic System Operation 9 Communicating With a Selected Speaker s 9 Distributing Audio to ROOMS 9 Adjusting Program Level to Rooms 9 To Make an All Rooms Announcement 9 To Make an Emergency Announcement 9 Basic System Hook Up un n 10 4 Wire Speaker Connections to the SBA225 10 Gall In SWwiichesa 5 cesses UAE a ZA cto dW Dewan en 11 Voice Call In Feature 11 Voice Call In Wiring 11 Speakers and Speaker Wiring 12 TIME TONGS vse BG a LE ai ge een 12 Advanced Hook Ups 00 cece eee nn nenn nn 13 External Emergency Mic 13 Emergency Telco Page
16. an input signal that can be connected to the input of an external booster amp Works in conjunction with the 25V BAL INPUT to allow replacement of the MCP 35A control panel s built in amplifier with a higher power amplifier SWITCHBANK CONNECTOR SBA225 switchbank is connected to the MCP35A panel through this con nector AUX POWER An AC power outlet for auxiliary equipment 10 12V Power Terminals Chassis ground 12V DC supply 750mA for powering up to 3 SCR25A modules 11 25V BAL INPUT The output of an external booster amp is connected at this 1 4 stereo phone jack Works in conjunction with the LINE OUT connector see 7 above 12 INPUT GAIN Input level adjustments for all input sources 13 TELCO PAGE Alternate input for MIC 2 allows connection of Bogen model WMT1A for providing a 600 ohm balanced telephone input 7 SBA225 Speaker Selector Panel Front View 3 1 2 fa A PROGRAM PROGRAM A OFF O INTERCOM C oHoHoHoHoHoHoHoHoHoHo dor C INTERCOM BT Eee eal ut I eT oO O 1 Room selector switch Position of the room switch controls the type of audio program material delivered to the room speaker 2 Call annunciators Lights to indicate a room has placed an intercom request from a call switch 3 Program busses A room speaker can be turned off or connected to one of two audio busses The pro gram A bus allows continuous audio to play into the room
17. connected to act as MIC 1 and the CONSOLE MIC will no longer be active when the MIC 1 button is pressed Note The CONSOLE MIC is always used when the EMERGENCY PAGE button is pressed and when using the green INTERCOM PUSH TO TALK button the user cannot change this The external mic must be a low impedance balanced mic phantom power is also available for condenser mics MIC 2 Connections for an external mic MIC 2 When the PROGRAM DISTRIBUTION button MIC 2 is pressed the microphone connected here becomes active The external mic must be a low impedance bal anced mic phantom power is also available for condenser mics VOICE CALL IN Allows retro fitting to older voice call in systems with call in switches connected in paral lel When a call in switch is activated an intercom channel is opened to the MCP35A control panel speaker so that the caller can announce verbally which room is calling Systems that use this style of call in will not see an annunciator light on the SBA225 room selector panel AUX A high impedance unbalanced input for auxiliary music sources This input only becomes active when the PROGRAM DISTRIBUTION button AUX button is pressed TELCO PAGE Shorting the TELCO PAGE terminal to GND activates a page from either MIC 2 or the TELCO INPUT selected by an internal jumper TIME CLOCK Shorting the TIME CLOCK terminal to GND produces a tone signal in all speakers LINE OUT Provides
18. from an audio source selected on the MCP35A control panel The Intercom C bus allows two way intercom communication from any room whose selector switch is placed in this position Basic System Operation Communicating With a Selected Speaker Use the following steps to talk and listen to a room that has its switch set to the C down position Place the switch of the room that you wish to talk and listen to in the C down position Make sure the PROGRAM DISTRIBUTION button MIC 1 is in the out position if not push it to pop it out Press and hold the green PRESS TO TALK switch and speak into the CONSOLE MIC upper left corner Release the button to listen to the reply To adjust the volume use the green MONITOR LISTEN knob AOUN Distributing Audio to Rooms To send audio to rooms continuously do the following 1 Set the switches for all the rooms that are to receive the audio into the A up position 2 Select the source of the audio by pushing in one or more of the PROGRAM DISTRIBUTION buttons MIC1 MIC 2 or AUX To turn off the audio source push the button again so that it pops out If more than one audio source is selected the audio from each source will be mixed together Note Make sure that the MIC 1 button is turned off popped out before making an intercom announcement Otherwise the intercom announcement will not only be heard in the desired stations set to C but also in all the ro
19. ial Adjustments section for more information on the jumper change Below are emergency telco page hook ups for various types of interfaces The Bogen model WMT1A can be used to convert the TELCO PAGE input to a transformer balanced 600 ohm input for telephone paging applications Note Jumper J3 on the MCP35A printed circuit Or board must be set to the TELEPHONE LINE TELCO position See the AUDIO ONLY Special Adjustments sec tion for jumper information TELEPHONE SYSTEM DRY CONTACTS o OOO a Leg YO rego MCP35A 13 The Bogen model TAMB telephone interface module can be used to make a remote page through the telephone system PHONE SYSTEM I EXT VOX ENABLE m Note Jumper J3 on the MCP35A printed circuit board must be set to the TELCO position See the Special Adjustments sec PAGING OUTPUT PIL CONTACT CLOSURE NG POWER SUPPLY co tion for jumper information MCP35A A Bogen TP AP Series Interphone can be used to make a remote page The figure below shows the connec tion RF24 POWER SUPPLY OL TP AP SERIES INTERPHONE Co aa TIME CLOCK GND PAGE TELCO O 9 MCP35A Note Jumper J3 on the MCP35A printed cir cuit board must be set to the TELCO position See the Special Adjustments section for jumper information 14
20. if necessary 19 Internal Jumper Selections Internal jumpers are provided for phantom power Mic1 Mic2 Telco Page Mic 2 input selection monitor speaker muting and privacy tone defeat Warning High voltages are present within the MCP35A The unit should not be operated without covers in place To change jumpers unplug the MCP35A and remove it from the enclosure Remove the top cover and place the jumper in the desired position Replace the top cover and plug the unit back in Phantom Power To enable phantom power for Mic 1 place J1 in the ON position To enable phantom power for Mic 2 place J2 in the ON position Telco Page Mic 2 Jumper J3 selects the TELCO PAGE input jack or the MIC 2 input terminals for the telephone page function Place the jumper in the MIC 2 position when using the MIC 2 terminals for emergency paging applications using a microphone Place the jumper in the TELCO position when using the TELCO PAGE input for paging applica tions Mic 1 Console Mic 1 Locate and loosen the two screws securing the jumper link on the rear chassis terminal strip connecting MIC 1 Hl terminal to the CONS MIC terminal 2 Move the link away from the CONS MIC terminal 3 Connect a balanced or unbalanced low impedance microphone to the MIC 1 terminals Connect the cable shield to the GND terminal 4 Move the shunt on J4 to the OFF position to disable the monitor speaker muting feature when the MIC 1 push button is selected
21. le for different wire gauges Refer to the list below to determine the correct connector model number Connector Kit Numbers Use Bogen Connector Kit Model No 2518 for 18 Ga Wire Use Bogen Connector Kit Model No 2520 for 20 Ga Wire Use Bogen Connector Kit Model No 2522 for 22 Ga Wire Make sure this pin is left open when connecting wiring to switchbank SBA225 SEC ROOM SPEAKER Speaker Only Speaker amp CA10A Call Switch Speaker amp CA11A Call Switch with Privacy Position ROOM SPEAKER Note For speaker only applications do not connect the shield to ground at the speaker end leave it floating 10 Call In Switches Two call in switches CA10A and CA11A are recommended for use with the SI and PI The CA10A is a momen tary push switch that has circuitry to light the annunciator light on the SBA225 room selector panel The CA11A has the same capability as the CA10A and includes a privacy lock out position that inhibits the MCP35A control panel from listening through the room speaker it does not interfere with the ability to call the station from the MCP35A The wiring of the call switches is shown below ROOM LINE MATCHING TRE MATONING E SPEAKER LINE MATCHING gas TRANSFORMER classroom SPEAKER TRANSFORMER CLASSROOM WIRING WIRING MODEL T725 MODEL 1725 1 2 WATT TAP SHOWN 1 2 WATT TAP SHOWN PRIVACY TO TALK SWITEHBANK nt electric
22. liary equipment Equipment connected to this outlet will be grounded only if the MCP35A control panel is properly grounded Maintenance amp Service Caution There are no user serviceable parts within the unit Have all internal servicing performed by a qualified technician The warranty will become void if repairs are made by other than the Bogen Service Department or an authorized service agency Our Applications Engineering Department is available to help you troubleshoot problems with your Bogen equip ment Engineers are available from 8 30AM to 8 00PM Eastern Standard Time Phone 201 934 8500 exten sion 2242 Service can be obtained from our factory service department No merchandise may be returned for repair with out prior written authorization Please contact our factory service department at 1 800 999 2809 for a RA num ber Only merchandise specified in the return authorization form can be returned to obtain warranty or non war ranty repair When shipping your unit pack your system well using the original shipping carton or a similar con tainer and filler material to prevent damage in transit Send the unit fully insured and prepaid via UPS or other responsible carrier Introduction Description Bogen Models PI35A and SI35A are 25 station intercom systems SI35A is expandable to 75 stations They can provide facilities with two way communication emergency paging time tones and background music or other audio program mate
23. ns PROGRAM TALK LEVEL LED indicators N normal lights green to indicate proper signal level P peak lights amber to indicate occasional higher than normal signal level O overload lights red to indicate possi ble signal clip PROGRAM Amber knob Used to adjust volume level to speaker stations MONITOR LISTEN Green knob Used to adjust the volume level to the front panel speaker FRONT PANEL SPEAKER Used to monitor a program or to listen to a station via the intercom C channel MCP35A Control Panel Rear View a 999 ag LNE OUT ME o LEO ax VOICE CALL IN Me 2 Me 15 ron MAX TO SWITCHBANK ACCESSORY ee S S S a one SYS Oe S S S a S S S IL I TEE Aete LO GND HI LO GND HI LO GND HI CONS COIR ELCO Q SSO S Je na Se NEUE GAN Du e oFO00 120 VAC CAUTION Puce Fuse LISTEN Taj TEL PAGE AUX MIC 2 MIC 1 Gorz OG GJ E AGC 1A AMSEY Nd oO 9 10 11 12 13 MIC 1 Connections for an external mic MIC 1 When the PROGRAM DISTRIBUTION button MIC 1 is pressed the microphone connected here becomes active As shipped from the factory a link is installed between the HI and CONS MIC terminals This makes the CONSOLE MIC act as MIC 1 When the link is removed an external microphone can be
24. oms set to A 3 To disconnect the audio from a room simply set the room switch to the O center position Adjusting Program Level to Rooms While the audio is playing observe the 3 PROGRAM TALK LEVEL lights N P O The green N light should be lit continuously with the yellow P light turning on occasionally This indicates that the audio level to the rooms is good If the red O light turns on it indicates that the volume level going to the room speakers is set too high Use the orange program knob to turn the volume down to an acceptable level To Make an All Rooms Announcement To distribute audio to all rooms that have room selector switches in A or O positions 1 Select source using MIC 1 MIC 2 or AUX button 2 Press the ALL ROOMS button To Make an Emergency Announcement To make an emergency page announcement to all rooms regardless of switch settings or program source selec tions do the following 1 Press the EMERGENCY PAGE push button and speak into the CONSOLE MIC 2 To release the emergency page push the emergency page button again Basic System Hook Up 4 Wire Speaker Connections to the SBA225 4 wire speaker connections 3 conductor shield is recommended for all new installations The figure below shows the connection to the back of the SBA225 when using a 4 wire system Note You must use Bogen connectors for this connection There are different connectors availab
25. rial to speaker equipped locations Both systems consist of a master control panel Bogen model MCP35A and a 25 station room selector panel Bogen model SBA225 assembled into an attractive wood grain cabinet Up to 2 more room selector panels can be purchased separately and added by the installer into the SI35A product PI35A is not expandable A number of options are available for the SI PI35A to accommodate various user demands and wiring condi tions These include an AM FM cassette radio room call in switches call in adapter modules for existing older call in switches 2 wire call in adapters and various styles of transformer coupled speakers Features Cost effective communications for 25 rooms e SI35A is expandable to 75 rooms in increments of 25 e Instant Emergency and All Rooms Announcements Remote Emergency Page capability e 20 watt intercom 35 watt program channel e Provisions for time signalling telco and voice call in MCP35A Control Panel Front Panel CONSOLE MIC ee IN EMERGENCY PRESS SWITCH BELOW AND SPEAK INTO CONSOLE MIC PUSH AGAIN TO RELEASE EMERGENCY PAGE N wu 4 MIC 1 PROGRAM DISTRIBUTION SELECT PROGRAM ADJUST PROGRAM LEVEL A TO SELECT ROOMS PLACE SWITCH ON AMBER A CHANNEL B TO ALL ROOMS OR PAGE PRESS ALL ROOMS SWITCH MONITOR PROGRAM LEVEL ALL MIC 2 AUX ROOMS OGEN MODEL MCR 35
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