Clear-Com HB-702 Instruction Manual
Clear-Com HB-702 Instruction Manual

Clear-Com HB-702 Instruction Manual

Headset station

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CLEAR-COM ENCORE
HB-702 TWO-CHANNEL HEADSET STATION
HB-704 FOUR-CHANNEL HEADSET STATION
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 HB-702

  • Page 1 CLEAR-COM ENCORE HB-702 TWO-CHANNEL HEADSET STATION HB-704 FOUR-CHANNEL HEADSET STATION I N S T R U C T I O N M A N U A L...
  • Page 2 Part Number: 810351Z Rev. 4 Legal Disclaimer Clear-Com, the Clear-Com logo, and Clear-Com Concert are trademarks or registered trademarks of HM Electronics, Inc. The software described in this document is furnished under a license agreement and may be used only in accordance with the terms of the agreement.
  • Page 3: Table Of Contents

    Introduction ..........3-1 Block Diagram of HB-702 Two-Channel Headset Station ... . . 3-1 Block Diagram of HB-704 Four-Channel Headset Station .
  • Page 4 H B - 7 0 2 / H B - 7 0 4 T W O - A N D F O U R - C H A N N E L H E A D -...
  • Page 5: Important Safety Instructions

    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. Please read and follow 7. Do not block any ventilation openings. Install in accordance with the these instructions before manufacturer’s instructions.
  • Page 6 Figure 1: Safety Symbols EMC AND SAFETY The HB-702 and HB-704 stations meet all relevant CE and FCC specifications set out below: EN55103-1 Electromagnetic compatibility. Product family standard for audio, video, audio-visual, and entertainment lighting control apparatus for professional use.
  • Page 7: Operation

    If you encounter a situation or have a question that this manual does not address, contact your dealer or call Clear-Com directly at the factory. Our applications support and service people are standing by to assist you. (Refer to Chapter 5: “Warranty”...
  • Page 8: Operation

    FRONT PANEL The controls, indicators, and connectors found on the HB-704 front panel are shown in Figure 1-1 and are described by the following text. The HB-702 front panel is identical except the channel switch has two positions. Volume...
  • Page 9 6. Headset connector: The headset connector is located on the front panel. All Clear-Com headsets are recommended for use with the HB-702 or HB-704. The Clear-Com PT-7 push-to-talk microphone or the HS-6 telephone handset will also plug into the headset connector. The following is a description of the characteristics of a suitable headset: Mic Type --- Dynamic;...
  • Page 10: Internal Adjustments And Connections

    INTERNAL ADJUSTMENTS AND CONNEC- TIONS The controls and connectors found inside the HB-702 and HB-704 are shown in the following figure and described by the following text. The jumpers can be accessed without completely removing the panel from its wall box by removing the top two screws and loosening the bottom two screws a few turns.
  • Page 11 The ability to set a sidetone null depends upon properly setting this switch. 8. Intercom Line Connection: The HB-702 and HB-704 contain a seven-terminal, plug-on connector for intercom line connection. This connector is intended to be unplugged from the circuit board when connecting the intercom line(s), then plugged back on when the wiring is completed.
  • Page 12 TW modules are used, both P1 and P3 must be removed. Save these jumper plugs for possible future use. Note: The HB-702 and HB-704 will not operate without either these jumper plugs or the optional modules installed. The orientation of P1 in J1 and P3 in J3 does not matter.
  • Page 13: Installation

    2. Connect the intercom lines. If less than the maximum number of intercom lines are to be connected, link unused intercom inputs to a connected input with jumper wires. 3. Install the HB-702 or HB-704 into the two-gang outlet box. For additional information, refer to the Clear-Com System Installation Manual.
  • Page 14 2 - 2 H B - 7 0 2 / H B - 7 0 4 T w o - a n d F o u r - C h a n n e l H e a d -...
  • Page 15: Maintenance

    Caution: These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. BLOCK DIAGRAM OF HB-702 TWO-CHANNEL HEADSET STA- TION Sidetone...
  • Page 16: Block Diagram Of Hb-704 Four-Channel Headset Station

    EB-4W four-wire option module is connected, the HB-702 may not be receiving AC power. (2) The HB-702 or HB-704 has an (2) Unit requires servicing. internal failure. Headset does not operate. Talk (1) The headset is unplugged, the (1) Adjust controls appropriately.
  • Page 17 SYMPTOM CAUSE SOLUTION (3) Plug P3 is missing on circuit (3) Plug P3 must be installed in the board. J3 jack if the EB-4W or EB-TW option is not used. Hum or buzz in system Inductive pickup caused by close Relocate the offending unit or proximity of this headset station or wiring.
  • Page 18 (1) Remove any audio transformers function. intercom line. or other equipment that may be connected across the intercom line. If equipment other than Clear-Com intercom equipment must be connected to the intercom line, please contact Clear-Com application or service personnel for advice.
  • Page 19: Technical Specifications

    TECHNICAL SPECIFICATIONS HB-702/HB-704 TWO- AND FOUR CHANNEL HEADSET STATIONS dBu is an absolute measurement. 0 dBu is referenced to 0.775 volts RMS Headset Microphone Input Input Type Dynamic Input Impedance >= 1K Mic Limiter Threshold -2dBu ± 3dB Mic Limiter Range >= 15dB...
  • Page 20 Weight 0.46 lbs. (0.21 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 21: Limited Warranty

    LIMITED WARRANTY Clear-Com warrants that at the time of purchase, the equipment supplied complies with any specification in the order confirmation when used under normal conditions, and is free from defects in workmanship and materials during the warranty period. Clear-Com offers 24 x 7...
  • Page 22: Warranty Repairs And Returns

    Tel: +1 510 337 6600 Email: customerservicesUS@vitecgroup.com Asia Pacific & South America Tel: +1 510 337 6600 Email: customerservicesAPAC@vitecgroup.com Clear-Com has the right to inspect the equipment and/or installation or relevant packaging. NON-WARRANTY REPAIRS AND RETURNS For items not under warranty, you must obtain an RMA by contacting the User Support Center.
  • Page 23: Extended Warranty

    1-year or 90-day warranty. SERVICE CONTRACT Clear-Com also offers service contracts that provide 24 x 7 telephone support, advance replacements, training, proactive maintenance, on-site visits, and no charge for repair or replacement of equipment. For more information, contact your authorized dealer, distributor, or sales representative.
  • Page 24 Clear-Com, and shipping damage. Products with their serial numbers removed or defaced are not covered by this warranty. This warranty does not include defects arising from installation (when not...

This manual is also suitable for:

Hb-704

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