HME DX121 Operating Instructions Manual
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HME DX121 Operating Instructions Manual

One-to-one wireless intercom system
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DX121
One-to-One Wireless Intercom System
Operating Instructions
HME# 400G749
Rev. A 11/3/16

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  • Page 1 DX121 One-to-One Wireless Intercom System Operating Instructions HME# 400G749 Rev. A 11/3/16...

  • Page 3: Table Of Contents

    HM Electronics, Inc. is not responsible for equipment malfunctions due to erroneous translation of its publications from their original English version. © 2016 HM Electronics, Inc. The HME logo and product names are registered trademarks of HM Electronics. All rights reserved.

  • Page 4: Fcc Notice

    RF n'est pas émis au-delà de l'exigence de Santé Canada. Les informations peuvent être obtenues: http://www.hc-sc.gc.ca/ewhsemt/pubs/radiation/radio_guide-lignes_direct-eng.php Hereby, HM Electronics, Inc. declares that the DX121 is in compliance with the essential requirements and other relevant provisions of R&TTE Directive 1999/5/EC.
  • Page 5 The European Union (EU) WEEE Directive 2012/19/EU places an obligation on producers (manufacturers, distributors and/or retailers) to take-back electronic products at the end of their useful life The WEEE Directive covers most HME products being sold into the EU as of August 13, 2005. Manufacturers, distributors and retailers are obliged to finance the costs of recovery from municipal collection points, reuse, and recycling of specified percentages per the WEEE requirements.

  • Page 6: Quick Reference Guide

    If you hear “Change battery” ― ¾ Remove battery from beltpac Change Battery ¾ Place battery in battery-charger port for recharging ¾ Install fully charged battery in beltpac For detailed information on DX121 features, and for setup and operating instructions, continue reading the following pages.

  • Page 7: Section 1. Introduction

    SECTION 1. INTRODUCTION The DX121 is a 2 4 GHz Wireless Intercom System The Base Station will connect to a dynamic microphone headset jack or the 4-Wire connector of a hardwired intercom station It also provides battery-charging capability for one battery The system typically...
  • Page 8 Radio Communication Center Broadcasting Theater...

  • Page 9: Equipment Identification

    Equipment Identification The DX121 One-to-One Wireless Intercom System includes a base station and may include any combination of beltpacs and headsets Other optional equipment may also be used with your system As you unpack the equipment, check the enclosed shipping document to...

  • Page 10: Main Equipment Features

    Main Equipment Features Base Station Features Front Panel POWER button IC indicator light POWER light ISO indicator light BATT PWR light (not used) 10 HEADSET and 4W (4-Wire) IN and OUT audio level controls STATUS display 11 Battery charger port (BAT41 battery only) CLR/BND (clear/band) button 12 RDY (battery ready) light REG (registration) button...

  • Page 11: Beltpac Features

    Beltpac Features Headset cable connector Volume-up  button Beltpac power and transmit lights Volume-down  button ISO (Isolate) button Battery IC (Intercom) button Battery release latch PWR (Power) button WH220 Headset Features IC1 button Power/mode lights ISO (Isolate) button Microphone Volume-up button Power button IC2 button...

  • Page 12: Section 2. Base Station Setup

    SECTION 2. BASE STATION SETUP Basic Base Station Setup The following description is for a basic, stand-alone DX121 One-to-One Wireless Intercom System setup Intercom headset, 4-Wire intercom and relay connections are described on page 16 Set up the Base Station as follows: Approximate 90°...

  • Page 13: Ac50 Battery Charger Setup

    3. Charge batteries - IMPORTANT! – Before using the DX121 system, charge the batteries for the Beltpacs and/or WH220 Headsets Charging time for fully-discharged batteries is about 3 hours per battery ¾ One battery can be charged in the battery...
  • Page 14 DMX systems, other HME Base Stations are using the same frequency band If these systems can be limited to one portion of the band, then the DX121 can be set to the opposite half of the 2 4 GHz to 2 48 GHz band To avoid this type of interference, set up the base stations for “split-band”...
  • Page 15 Base Station Initialization For multiple HME Base Stations to operate without interference, they must be properly initialized before performing any other setups After initializing each Base Station, register each beltpac or headset that will be used with that base according to the procedures on pages 12 –...
  • Page 16 Repeat these steps for each remaining secondary base Use a different number for each Only the primary base and the secondary base you are working with should have power on during initialization All other equipment should be off After all secondary bases are initialized with beltpacs and headsets registered, power up all bases 10 Press RESET on the primary base, and let it recover Turn on the primary beltpacs or headsets to allow them to link 11 Press RESET on each secondary base (one at a time), and let it initialize to the primary (indicated by a single bar) 12 Turn on the beltpacs or headsets associated with the secondary bases Complete one group at a time until they have all...

  • Page 17: Beltpac / All-In-One Headset Setup And Registration

    Beltpac / All-In-One Headset Setup and Registration The first time you operate the DX121 system, you must register each BP200 Beltpac and/or WH220 All-In-One Headset for use with a specific Base Station. The Base Station will then recognize all registered beltpacs and headsets when their power is on and...
  • Page 18 If registration is successfully completed: ¾ A voice message in the headset will say “Power on, Beltpac #, Version #, Begin registration, Registration complete, …” ¾ After a delay of up to 15 seconds, the STATUS display will show the ID number assigned to this Beltpac for about 10 seconds NOTE: ID numbers are assigned sequentially as 0 through 3 ¾...
  • Page 19 Set Up All-In-One Headsets Battery-release latch Before registering them, insert a fully charged battery in each Headset When a (blue button) battery weakens, you will hear “Change battery” At this time, remove the battery from the headset by pressing the blue battery-release latch to remove the battery Power On/Off ¾...
  • Page 20 ¾ Register all active WH220 Headsets, one at a time NOTICE You have completed the system setup. The instructions under INTERCOM AND RELAY CONNECTIONS on the next page are for setting up auxiliary audio equipment which you may want to use with your DX121...

  • Page 21: Intercom And Relay Connections

    Intercom and Relay Connections If using your DX121 with a wired intercom system, connect the intercom to the HEADSET/4-WIRE connector on the rear panel of the Base Station as shown below Also, the RELAY connector shown below can be used as a “dry contact” for any outside...

  • Page 22: Section 3. Equipment Operation

    SECTION 3. EQUIPMENT OPERATION Base Station Operation Front Panel Controls, Indicators and Connector Power button Press the POWER button to turn the power on A red light above the button will be lit when the Base Station power is on Press the button again to turn the power off The light will go off All settings are preserved when the power is turned off, and will be restored when the power is turned on again Registration Controls and Status Indicator...

  • Page 23: Beltpac Operation

    Beltpac Operation The Beltpac control buttons have a snap action. They will activate when pressed firmly. Use your fingertips, not your fingernails, to press the buttons Power On/Off Power Lights ¾ Power On — Press and release the PWR (power) button A voice message in the earpiece will say “Power on, Beltpac #, Version #”, and the red power lights at the corners of the IC and ISO buttons will turn on After a short time, one light will go off and the other will change to green indicating the Beltpac is ready for...

  • Page 24: Sidetone Adjustment

    Volume Up/Down ¾ Volume Up Adjustment — Each time you press and release the volume-up  button, you will hear a higher pitch beep in the earpiece as the volume increases one step If you press and hold the volume-up button, you will hear beeps of ascending pitch as the volume steps up to maximum When maximum volume is reached, you will hear “maximum”...

  • Page 25: All-In-One Headset Operation

    All-In-One Headset Operation The Headset control buttons will activate when pressed lightly Use your Power button fingertips, not your fingernails, to press the buttons. Power On/Off ¾ Power On — Press and release the power button on the inside of the Headset housing A voice message in the earpiece will say “Power on, Headset #, Version #”...
  • Page 26 Volume Up/Down ¾ Volume Up Adjustment — Each time you press and release the volume-up  button, you will hear a higher pitch beep in the earpiece as the volume increases one step If you press and hold the volume-up button, you will hear beeps of ascending pitch as the volume steps up to maximum When maximum volume is reached, you will hear “maximum”...

  • Page 27: Section 4. Troubleshooting

    2400MHz cordless telephone interference — If there is a 2400MHz cordless telephone nearby, interference may occur However, because the DX121 is a frequency-hopping system, this problem is unlikely If it does occur, changing frequencies on the telephone may alleviate the problem If not, move the phone as far as practical from the Base Station, or use another type phone In the event of an electrical power outage —...

  • Page 28: Section 5. Dx Series Led Aid

    SECTION 5. DX SERIES LED AID Powering on any DX base station will produce on the LED display the number “8” for approximately 3 seconds Blank display indicates the base is ready for operation You can register belt packs under this condition. Single horizontal bar indicates the base is in secondary mode and registering to a base has been initiated and successfully linked with a primary base You can register beltpacs in this mode.
  • Page 29 The lower case “c” will appear when the registry on the base station is cleared To clear the registry power down the base Hold down the CLR/BND or RESET REGISTRATION* button first and then power the base on when you see the “8”...

  • Page 30: Section 6. Technical Data

    SECTION 6. TECHNICAL DATA DX121 Equipment Specifications BS121 Base Station GENERAL Frequency Range All, 2400 to 2483 5 MHz Low, 2401 92 to 2439 94 MHz High, 2443 39 to 2481 41 MHz Frequency Response 200 Hz to 3 5 kHz...
  • Page 31 BP200 BELTPAC Frequency Range 2400 MHz – 2483 5 MHz Antenna Internal, horizontal/vertical diversity Frequency Response 200 Hz to 3 5 kHz Transmit Power 100mW burst RF Sensitivity <–0dBm w 10-3 BER Battery Requirements 3 6V lithium ion, rechargeable Battery Life Hands-free –...

  • Page 32: Section 7. Index

    SECTION 7. INDEX Base Station Antenna mounting Battery charging Block diagram Features Initialization (multiple base stations) Intercom and relay connections Interference avoidance Operation Power connection Setup (multiple base stations) Setup (single base station) Setup (split-band) Specifications Beltpac Battery changing Features Microphone gain adjustment Operation Registration...

  • Page 33: Base Station Block Diagram

    BASE STATION BLOCK DIAGRAM...

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