Clear-Com Encore MA-704 Instruction Manual
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Clear-Com Encore MA-704 Instruction Manual

Clear-Com Encore MA-704 Instruction Manual

Ifb system
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CLEAR-COM ENCORE
PIC-4704, MA-704, AX-704 IFB SYSTEM
I N S T R U C T I O N M A N U A L

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Summary of Contents for Clear-Com Encore MA-704

  • Page 1 CLEAR-COM ENCORE PIC-4704, MA-704, AX-704 IFB SYSTEM I N S T R U C T I O N M A N U A L...
  • Page 2 Vitec Group Communications Room 1806, Hua Bin Building No. 8 Yong An Dong Li Jian Guo Men Wai Ave Chao Yang District Beijing, P.R. China 100022 Clear-Com, CellCom/FreeSpeak and the Clear-Com Communication Systems logo are registered trademarks of The Vitec Group plc.

  • Page 3: Table Of Contents

    CONTENTS OPERATION ........1-1 Introduction .
  • Page 4 P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M...
  • Page 5 IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
  • Page 6 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol alerts you to the presence of uninsulated dangerous voltage within the product's enclosure that might be of sufficient magnitude to constitute a risk of electric shock. Do not open the product's case. This symbol informs you that important operating and main- tenance instructions are included in the literature accompanying this product.

  • Page 7: Operation

    “talent” cue channels. DESCRIPTION Clear-Com’s stand-alone series of IFB components offers two types of talent access station. The MA-704 has a socket for a gooseneck microphone and a pre-amplifier with line-level output. It provides access to four talent positions.
  • Page 8 MA-704 AX-704 AX-704 Mic Gain Exten. Bus External Line Exten. Bus External Line The MA-704 The AX-704 Figure 1-2: MA-704 and AX-704 Units A PIC-4704 unit is required for every four talent positions, or fraction thereof. For example, a system with five to eight talent positions will require two PIC-4704s.

  • Page 9: Operation

    The connectors on the MA-704, AX-704, and PIC-4704 are arranged for convenient interconnection as a stand-alone system. However, all the units’ electrical characteristics are identical to those of the integrated IFB systems on our standard broadcast intercom line. With suitable connector adaptors, both types of units can be mixed in a system.
  • Page 10 1 - 4 P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M...

  • Page 11: Installation

    INSTALLATION SYSTEM CAPACITY A system may have up to fifty access locations. Cue audio from the MA-704 can drive up to twenty-three AX-704 units, thus permitting a maximum of ninety-six talent positions. In order to use the IFB system at its maximum capacity, two factors must be considered: system wiring (architecture) and power requirements.
  • Page 12 Referring to the typical system block diagrams shown below, only the system in Figure 2-2 is connected using the “hub” method; all other systems are shown connected via the “daisy-chain” method. Figure 2-1: One Access Location to up to Four Talent Positions Figure 2-2: Two Access Locations to up to Four Talent Positions 2 - 2 P I C - 4 7 0 4 , M A - 7 0 4 &...
  • Page 13 Figure 2-3: Three Access Locations to up to Four Talent Positions Figure 2-4: One Access Location to up to Eight Talent Positions 2 - 3 P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M...
  • Page 14 Figure 2-5: Two Access Locations to up to Eight Talent Positions Figure 2-6: Two Access Locations to up to Eight Talent Positions 2 - 4 P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M...

  • Page 15: Interconnect Cabling

    (DC power), and all shields are tied together to pin 1 (common). This arrangement minimizes resistance buildup effects in long cable runs. Clear-Com has ready-made cable in 25, 50, and 100 foot lengths to fit your cabling and system architecture needs.

  • Page 16: System Connection

    1. Determine the architecture for your IFB system. 2. Decide upon a location for the PIC-4704(s). 3. Connect the PIC-4704(s) to Clear-Com power supply(s) such as the PS-702 or PS-704. 4. Connect the program sources(s) to the PIC-4704(s) as required. A balanced program source is connected to pins 2 and 3 of the program input.
  • Page 17 Figure 2-8: IFB Wiring Example 2 - 7 P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M...

  • Page 18: Physical Mounting

    PHYSICAL MOUNTING The PIC-4704 is designed for mounting in a standard 19-inch rack. It requires only one 1.75-inch rack space, and is 7.5-inches deep. The MA-704 and AX-704 may be mounted in a console or desk, or in a standard 19-inch rack using the optional model CEP-RK rack kit.
  • Page 19 Figure 2-10: AX-704 Mounting Dimensions 2 - 9 P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M...

  • Page 20: Setup And System Check

    SETUP AND SYSTEM CHECK After program sources are connected, assign them at the PIC-4704 to the talent channels with the Program (Source) select switches for each channel’s interrupt and non-interrupt talent feeds (see Figure 1-3). Set the switch left to select source 1 or right to select source 2.

  • Page 21: Maintenance

    MAINTENANCE The table of possible problems on the next page, which generally involves system wiring, covers only the most likely problems. In any troubleshooting effort, keep these points in mind: 1. The power for all units in the system is routed from the power supplies through the PIC-4704.

  • Page 22: Troubleshooting Tips

    TROUBLESHOOTING TIPS SYMPTOM CAUSE SOLUTION Channel access (a) No power. (a) Check that power button not lit or supply is operating (b) Insufficient power too dim. and connected to the PIC-4704 (b) Increase power capacity or connect fewer stations on each cable run.

  • Page 23: Specifications

    SPECIFICATIONS PIC-4704, AX-704 AND MA-704 TECHNICAL SPECIFICATIONS dBu is an absolute measurement. 0 dBu is referenced to 0.775 V RMS. Panel Microphone Input (MA-704) Input Type Electret Input Impedance >=2KΩ Mic Limiter Threshold 0dB ± 3dB Mic Limiter Range >= 15dB Program Line Input Maximum Level before Clipping >= 20dBu...
  • Page 24 Power (MA-704) Input Voltage Range 20-30 VDC Input Current (Idle) <= 140mA Input Current (Max) <= 180mA Power (AX-704) Input Voltage Range 20-30 VDC Input Current (Idle) <= 120mA Input Current (Max) <= 150mA Rear Panel Connectors (PIC-4704) IFB Input (2) XLR6F Power In (1) XLR3F...
  • Page 25 AX-704 1.35 lbs. (.61 kg) Notice About Specifications While Clear-Com makes every attempt to maintain the accuracy of the information contained in its product manuals, that information is subject to change without notice. Performance specifications included in this manual are design-center specifications and are included for customer guidance and to facilitate system installation.
  • Page 26 4 - 4 P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M...

  • Page 27: Limited Warranty

    • UHF wireless intercom systems have a limited warranty of three years. available. • All other Clear-Com and Drake brand systems and products, including beltpacks, have a limited warranty of two years. The warranty starts at the time of the product’s original purchase. The warranty...

  • Page 28: Warranty Repairs And Returns

    Telephone for the Americas and Asia: +1 510 337 6600 Email: vitec.support@AVC.de Once the standard warranty period has expired, the User Support Center will continue to provide telephone support if you have purchased an Extended Warranty. For latest contact information please refer to the Service and Support section at www.clearcom.com.

  • Page 29: Liability

    Note: VGC does not offer warranty extensions on UHF wireless intercom systems, or on any product with a 1-year or 90-day warranty. LIABILITY THE FOREGOING WARRANTY IS VGC'S SOLE AND EXCLUSIVE WARRANTY. THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY OTHER REQUIRED IMPLIED WARRANTY SHALL EXPIRE AT THE END OF THE WARRANTY PERIOD.
  • Page 30 W A R R A N T Y...

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