Clear-com SB-704 User Manual

SB-704 MAIN STATIONINSTRUCTION MANUALCLEAR-COM ENCORE

SB-704 MAIN STATION1-4providing separate short-circuit-protected power sources to each of the four intercom lines. A short on one intercom line will n

SB-704 MAIN STATION1-5as ½ second, depending upon whether there was a single or multiple short or overload. The other channels continue to operate nor

SB-704 MAIN STATION1-6The main program input is the one on the XLR connector on the rear panel. To listen to the main program in the speaker or headph

SB-704 MAIN STATION1-7button on the station will send the microphone to all channels in the party-line position.Remote Mic Kill Function When you pres

SB-704 MAIN STATION1-8• TALK LATCH DISABLE: Four DIP switches (one for each channel) disable the latching action of the selected channel.• PROGRAM ON/

SB-704 MAIN STATION1-94. Adjust the sidetone adjust control for the desired amount of sidetone in the headset. • CHANNEL PROGRAM FEED LEVEL: Beside th

SB-704 MAIN STATION1-10intercom line and break it apart in several places while it is plugged into the station to isolate the section of line that is

SB-704 MAIN STATION1-11Note: To “latch” (or “lock”) a button to “on,” quickly press it once. The button is “locked” to “on” for hands-free use. Pressi

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SB-704 MAIN STATION2-1INSTALLATIONThis chapter describes installation of the SB-704 in an intercom system.INSTALLATION OVERVIEWThis section describes

SB-704 Main Station Instruction ManualPart Number 810346Z Rev. 3Legal DisclaimersCopyright © 2013 HME Clear-Com Ltd.All Rights ReservedClear-Com, the

SB-704 MAIN STATION2-2link is activated. If there is more than one SB-704 or MS-704 in a system, the link function can only be used at the station whe

SB-704 MAIN STATION2-3• INDIVIDUAL CHANNEL SHORT CIRCUIT PROTECTION: Each individual channel is separately overload and short circuit protected and ma

SB-704 MAIN STATION2-4Figure 2-3: Fail Safe Power DistributionThe illustration above shows the proper power wiring of a system powered by a single SB-

SB-704 MAIN STATION2-5Portable Installation CablePractical cable for portable system interconnections is flexible, two-conductor, shielded microphone

SB-704 MAIN STATION2-6Figure 2-4: Interconnect Cable DetailNote: The remote stations connected to each channel are powered from the intercom cable for

SB-704 MAIN STATION2-7Figure 2-5: Typical Mixed System WiringPHYSICAL INSTALLATIONYou can install the SB-704 in a standard equipment rack, or you can

SB-704 MAIN STATION2-8(0.64 cm) phone jack for a connector. A proprietary mating receptacle is mounted on the station. To install a GM-9 or GM-18 pane

SB-704 MAIN STATION2-9Pin 2 --- - SignalPin 3 --- + SignalThe signal level is 0 dBu and transformer isolated.IFB/HOT MIC (REAR PANEL, 1/4-INCH PHONE J

SB-704 MAIN STATION2-10Figure 2-6: Accessory Connector DB-15F - Rear ViewAuxiliary Program InputsFour different program inputs, one for each channel,

SB-704 MAIN STATION2-11INTERNAL OPTION JUMPERSThere are several jumper options inside the chassis of the SB-704. To access these options remove the to

SB-704 MAIN STATION iCONTENTSOPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Introduction . . . . . . . . . . . . .

SB-704 MAIN STATION2-12announce output and replaces it with audio from the selected panel or headset microphone.The factory default position for J11 i

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SB-704 MAIN STATION3-1MAINTENANCEINTRODUCTIONThis chapter provides maintenance information, including a block diagram and troubleshooting tips. Cautio

SB-704 MAIN STATION3-2Figure 3-8: SB-704 Block Diagram

SB-704 MAIN STATION4-1TECHNICAL SPECIFICATIONSSB-704 MAIN STATIONdBu is an absolute measurement. 0 dBu is referenced to 0.775 volts RMSPanel Micropho

SB-704 MAIN STATION4-2Output Impedance >= 200ΩLoad Impedance >= 600ΩIFB/Hot MicType UnbalancedOutput Impedance 150ΩLoad Impedance >= 600ΩFre

SB-704 MAIN STATION4-3Min GainPanel Mic - Party Line <= 25dBMains PowerInput Voltage Range 100 - 240 VACInput Frequency Range 50 - 60 HzInput Power

SB-704 MAIN STATION4-4(4) Listen adjust controls(4) Channel null adjust controls(4) Channel program feed adjust controls(4) Talk buttons(4) Call butt

WARRANTY iLIMITED WARRANTYClear-Com warrants that at the time of purchase, the equipment supplied complies with any specifica

SB-704 MAIN STATIONiiAccessory (Rear Panel, DB-15F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8Auxiliary Program Inputs. . . . .

WARRANTYii period will be offered at no charge between 09:00 and 17:00 according to the customer’s local time zone.In addition, for cus

WARRANTY iiiNON-WARRANTY REPAIRS AND RETURNSFor items not under warranty, you must obtain an RMA by contacting the User Suppo

WARRANTYiv EVENT, TO THE MAXIMUM EXTENT PERMITTED UNDER APPLICABLE LAW, CLEAR-COM'S LIABILITY TO CUSTOMER HEREUNDER SHALL NOT UNDE

SB-704 MAIN STATION iiiIMPORTANT SAFETY INSTRUCTIONS1. Read these instructions.2. Keep these instructions.3. Heed all warnings.4. Follow all instructi

SB-704 MAIN STATIONivFigure 1: Safety SymbolsEMC AND SAFETYThe SB-704 station meets all relevant CE, FCC, UL, and CSA specifications set out below:EN5

SB-704 MAIN STATION 1-1OPERATIONINTRODUCTIONCongratulations on choosing this Clear-Com product. Clear-Com was established in 1968 and remains the mark

SB-704 MAIN STATION1-2Clear-Com main stations, power supplies, and certain remote stations each have an auxiliary program input with its own volume co

SB-704 MAIN STATION1-3• INTERNAL IFB (IFB - Interrupt Foldback of program feeds): Program feed can be fed to each channel and interrupted (IFB) when a