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Amron 2820A-02 User Manual

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User Manual
For
Amron International, Inc.
Models 2820A-02 & 2820A-03
Chamber Communicators
S/N ____________________
1380 Aspen Way, Vista California 92081-8349
United States of America
Phone: (760) 208-6500
Fax (760) 599-3857
Email:
sales@amronintl.com
Web:
www.amronintl.com
This manual and the information contained herein are provided for use as an operation and maintenance
guide. No license or rights to manufacture, reproduce, or sell either the manual or articles described
herein are given. Amron International, Inc. reserves the right to change specifications without notice.
Copyright© 2018 Amron International, Inc.

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Summary of Contents for Amron 2820A-02

  • Page 1 This manual and the information contained herein are provided for use as an operation and maintenance guide. No license or rights to manufacture, reproduce, or sell either the manual or articles described herein are given. Amron International, Inc. reserves the right to change specifications without notice. Copyright© 2018 Amron International, Inc.

  • Page 3: Table Of Contents

    BACK PANEL CONNECTIONS ....................9 DRAWING, OPERATOR HEADSET CONNECTIONS ............... 11 DRAWING, PUSH-TO-TALK CONNECTIONS ................12 DRAWING, 2820A-02 & 2820A-03 TO CHAMBER WIRING DIAGRAM ........13 OPERATION ............................14 CHARGING THE BATTERY ....................... 14 INITIAL POWER ON - BATTERY CONDITION CHECK ............14 OPERATING ON AC POWER ....................
  • Page 4 DRAWINGS ............................22 FRONT PANEL PARTS LOCATOR, MODEL 2820A-02 ............23 FRONT PANEL PARTS LOCATOR, MODEL 2820A-03 ............24 REAR PANEL PARTS LOCATOR, MODELS 2820A-02 & 2820A-03 ........25 MOUNTING DETAIL, MODELS 2820A-02 & 2820A-03 ............. 26 PARTS LISTS ............................. 27 MODELS 2820A-02 &...

  • Page 5: Introduction

    90-264 VAC, 47-440 Hz internal power supply. The 2820A-03 has all the features of the 2820A-02 but also includes a separate entertainment amplifier circuit. This circuit is used with the Amron Model 3130 Entertainment Speaker to provide audio entertainment to the chamber occupants.

  • Page 6: Specifications

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL SPECIFICATIONS ELECTRICAL Input Impedance (Each Input) ................... 250 Ohms Frequency Response ..................300 - 10000 Hz Common Mode Rejection .................. 40 dB Minimum Current Drain Maximum Full Volume ................3 Amps Minimum Quiescent ....................0.190 Amps Output Impedance ......................

  • Page 7: Accessories

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL ACCESSORIES Amron produces a series of accessories designed to operate with the AMCOM II chamber communicators. AMRON HEAVY-DUTY HEADSET - MODEL 2401-28 The Model 2401-28 is a heavy-duty headset with boom microphone. It comes equipped with color-coded, dual banana plugs that mate directly to AMCOM diver communicators.

  • Page 8: Audio Adaptor Cable - Amron Part Number 180-1000-00

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL AUDIO ADAPTOR CABLE - AMRON PART NUMBER 180-1000-00 Adapter cable is 6.5 feet (2 meter) long with two RCA Phono plugs that connect the auxiliary audio input to a standard 3.5 mm stereo phone plug which mates to the headphone jack of most common portable audio devices.

  • Page 9: Amron Chamber Wiring Harness - Model 3128

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL 3.15 AMRON CHAMBER WIRING HARNESS – MODEL 3128 The Model 3128 Chamber Wiring Harness provides all the wiring connections to inner and outer locks. It includes all the wiring for communicators. 3.16 AMRON CHAMBER ENTERTAINMENT SPEAKER – MODEL 3130...

  • Page 10: Controls And Connections

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL CONTROLS AND CONNECTIONS Before using the 2820A-02 and 2820A-03 Chamber Communicator, the operator should be familiar with all the operating controls and connections. While reading this manual, you will find capitalized words such as PANEL SPEAKER. These words are to remind the reader that additional information can be found in this section of the manual.
  • Page 11 2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL 4.1.4 OPERATOR VOLUME – This control sets the volume for the PANEL SPEAKER and operator headset. Rotate this knob clockwise to increase the volume. 4.1.5 PANEL SPEAKER - The panel speaker features a waterproof speaker that allows the tender to monitor conversations in the chamber.

  • Page 12: Operator Connections

    If the operator requires more mobility, the Amron Model 2821-28 Remote Push-to-Talk Module can be used to extend the headset cable. It includes a push-to-talk button on a clip-on belt module and comes standard with 25 feet (7.6 meters) of cable (custom cable lengths...

  • Page 13: Back Panel Connections

    ENTERTAINMENT SPEAKER (2820A-03 only) - This connection is only available on the 2820A-03. It is routed to a separate entertainment speaker, such as the Amron Model 3130, usually located in the Inner Lock. 4.3.3 OUTER MICROPHONE - This connection functions as both an output (earphone) and input (microphone) for the outer lock occupants as controlled by the PUSH- TO-TALK SWITCH and PUSH-TO-TALK JACK.
  • Page 14 Although this input will accept a stereo audio source, it will be converted into a monaural signal before going to the chamber. The earphone output of most MP3 players can be connected to this input using an adaptor cable like the Amron Audio Adaptor Cable (Amron Part Number 180-1000-00).

  • Page 15: Drawing, Operator Headset Connections

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL DRAWING, OPERATOR HEADSET CONNECTIONS 2820A-02-UM REV 1.0...

  • Page 16: Drawing, Push-To-Talk Connections

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL DRAWING, PUSH-TO-TALK CONNECTIONS 2820A-02-UM REV 1.0...

  • Page 17: Drawing, 2820A-02 & 2820A-03 To Chamber Wiring Diagram

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL DRAWING, 2820A-02 & 2820A-03 TO CHAMBER WIRING DIAGRAM 2820A-02-UM REV 1.0...

  • Page 18: Operation

    8.3. CHARGING THE BATTERY The Models 2820A-02 and 2820A-03 are supplied with a sealed lead acid back up battery. To charge the battery, insert the AC power cord to the AC inlet located on the back of the communicator.

  • Page 19: Operating On Ac Power

    MODES OF OPERATION The Models 2820A-02 & 2820A-03 have the ability to operate in either 2-Wire or Full Duplex (4-Wire). Both the chamber and the operator can be connected in either mode and a combination of modes can be used.
  • Page 20 2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL LOCK VOLUME – While operator is talking into the PANEL MIC or hand-held microphone and depressing PTT switch, the operator adjusts this volume control to a comfortable level. 5.5.2 4-WIRE MODE Turn power switch to ON; turn speaker switch to OFF; adjust volume controls to mid-scale.

  • Page 21: Maintenance

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL MAINTENANCE The following section describes the procedures for checking the operation of your 2820A-02 & 2820A-03 chamber communicators, general maintenance procedures, and how to troubleshoot common problems. CHAMBER COMMUNICATOR CHECK PROCEDURES The following are a series of step-by-step procedures to perform a functional check of your communicator.

  • Page 22: General Maintenance

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL 3. Turn the SPEAKER SWITCH off to avoid acoustic feedback. 4. Turn on the communicator and verify the BATTERY CONDITION INDICATOR is on or blinking. If the LED does not come on at all, then replace or recharge the battery.
  • Page 23 4.2. 6.3.4 YEARLY CHECK For maximum service life, it is recommended that the chamber communicator be sent back to Amron for a yearly check. Every three years it is recommend the rechargeable battery be replaced. 6.3.5 LONG TERM STORAGE If the communicator is to be stored for a period greater than 30 days, it is recommended that it be stored in a cool dry location.

  • Page 24: Troubleshooting

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL TROUBLESHOOTING Most problems are usually simple issues that can often be found by careful inspection of the chamber communicator and wiring. The following section will describe the troubleshooting procedure for several common issues.

  • Page 25: Low Volume

    (see section 7.4 for additional information). Check the BATTERY CONDITION INDICATOR and test the battery per section 9.0 if necessary. If the communicator fails the check-out procedure, contact Amron for further assistance. GARBLED VOICE TO CHAMBER The LOCK VOLUME control is set too high.

  • Page 26: Push-To-Talk Does Not Work

    PANEL SPEAKER. If the operator wants to operate with the headset and leave the PANEL SPEAKER on, Amron recommends the tender move away from the unit by using the Amron Model 2822-28 Remote Walk-and-Talk Module. This module provides an "extension"...

  • Page 27: Front Panel Parts Locator, Model 2820A-02

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL FRONT PANEL PARTS LOCATOR, MODEL 2820A-02 2820A-02-UM REV 1.0...

  • Page 28: Front Panel Parts Locator, Model 2820A-03

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL FRONT PANEL PARTS LOCATOR, MODEL 2820A-03 2820A-02-UM REV 1.0...

  • Page 29: Rear Panel Parts Locator, Models 2820A-02 & 2820A-03

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL REAR PANEL PARTS LOCATOR, MODELS 2820A-02 & 2820A-03 ME161-2003 180-1013-01 MS-3102A-20-27P 2820A-02-UM REV 1.0...

  • Page 30: Mounting Detail, Models 2820A-02 & 2820A-03

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL MOUNTING DETAIL, MODELS 2820A-02 & 2820A-03 2820A-02-UM REV 1.0...

  • Page 31: Parts Lists

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL PARTS LISTS The parts lists include both mechanical and electrical parts. The following information will be useful in interpreting data which is not self-explanatory. REVISIONS The parts lists in this manual are for the current model of diver communicator as of the printing date.

  • Page 32: 2820A-02 & 2820A-03 Rear Chassis Components

    2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL Ref. Part Number Description KLN-500B-1/4 KNOB BLACK AL .5DIA .25IN SHAFT 91A1AB24B15 POTENTIOMETER 10K LINEAR 24XX-MIC MICROPHONE ASSEMBLY ELECTRET LT2462-24-D51 LED BI-COLOR RED/GREEN 2820A-02 & 2820A-03 REAR CHASSIS COMPONENTS Part Number Description MS-3102A-20-27P...

  • Page 33: Warranty And Service Policy

    (760) 208-6500, Monday – Friday, 8 a.m. to 5 p.m. PST. Both MODEL NO. and SERIAL NO. are required fields to be entered on the Amron Communicator Repair Request form and can be found on the products identification label as shown below.

This manual is also suitable for:

2820a-03

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