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User Manual
For
Amron International, Inc.
Model 2825R/24/XX
Two Diver Rack Mount Communicator
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© 2015 Amron International, Inc.
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Summary of Contents for Amron Amcom II 2825R/24 Series
- 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© 2015 Amron International, Inc.
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Page 3: Table Of Contents
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL TABLE OF CONTENTS INTRODUCTION AND SPECIFICATIONS ..................1 Introductions ..........................1 Electrical Specifications ........................ 1 Mechanical Specifications ......................1 Amcom II Model 2825R Two Diver Rack Mount Communicator ..........2 LIMITED WARRANTY AND SERVICE POLICY .................. 3 Limited Warranty ........................... - Page 4 2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL DRAWINGS AND SCHEMATICS....................... 33 Schematic 2825R/24 ........................34 Schematic Option /26DSP3 ......................35 Schematic 28A Wireless Tender Option ..................36 Schematic -4002 Chamber Lock Call Option ................37 Parts Identifier, Front Panel Model 2825R/24 ................38 Parts Identifier, Options /26DSP3, /28A, 4002 ................
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Page 5: Introduction And Specifications
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL INTRODUCTION AND SPECIFICATIONS Introductions The 2825R AMCOM II Rack Mount Diver Communicator is a full featured, two-diver, hardwire communicator that uses state-of-the-art electronics to provide clear and reliable communications. The 2825R is designed for integration into a standard 19 inch equipment rack and all necessary connections can be made via the front panel jack or rear mounted MS connector. -
Page 6: Amcom Ii Model 2825R Two Diver Rack Mount Communicator
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Amcom II Model 2825R Two Diver Rack Mount Communicator The front panel contains all the controls and connections required to operate the communicator. It is intended that the divers will be connected to the communicator using the rear chassis MS connector but the front panel 5-way binding post allows for ad-hoc connections when required. -
Page 7: Limited Warranty And Service Policy
Amron literature covering this product. Amron’s obligation under this warranty is limited to the repair of or replacement, at Amron’s option, of defective material. This warranty shall not cover defects which are the result of misuse, negligence, accident, repair or alterations. -
Page 8: Options And Accessories
Options The following options are available to customize the AMCOM communicator. Options have to be ordered at the time of purchase or the communicator has to be returned to AMRON for the option to be installed. Model /26DSP3 – Helium Speech Unscrambler 3.1.1... - Page 9 2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Model 2821-28 – Amron Remote Push to Talk Module 3.2.5 Designed for 2-Wire applications, the Model 2821-28 provides the tender with mobility around the dive site while maintaining communications with the diver. It comes equipped with a small clip-on belt module that contains a push-to-talk switch, connector for the headset, and 25 feet (7.6 meters) of lightweight flexible...
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Page 10: Tender And Diver Controls And Connections
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL TENDER AND DIVER CONTROLS AND CONNECTIONS Before using the 2825R/24 Two Diver Rack Mount communicator, the operator should be familiar with all the controls and connections. While reading this manual, you will find capitalized words such as PANEL SPEAKER. -
Page 11: Tender Connections
If the tender requires more mobility at the dive site, 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... -
Page 12: Diver Controls
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Tender Microphone – This is a dual banana jack (color-coded red) that functions 4.2.2 as the microphone input from the tender's headset. It is only used if the tender is in Full Duplex (4-Wire) mode. Push-To-Talk Jack –... -
Page 13: Other Connections
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Diver Earphone – This is a dual 5-way binding post jack (color-coded black) that 4.4.2 functions as the output for the diver's earphone. It is only used when the diver is in Full Duplex (4-Wire) mode. -
Page 14: Option Controls: Wireless Tender /28A Option
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL the microphone signals are routed to the HSU and the tender can adjust the controls as necessary. Treble Boost – Selects the amount of gain added to the High Frequency (HF) 4.7.2 portion of the divers’... - Page 15 2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Standby (listen only) mode at the same time. Only one module can be in the talk mode. Headset Jack – Located on the side opposite to the ON/OFF-Volume Control. 4.8.5 Plug the remote wireless headset to this Jack. Charge Jack –...
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Page 16: Drawing, 2-Wire Connections
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Drawing, 2-Wire Connections 2825R-UM REV 3.0... -
Page 17: Drawing, Full Duplex (4-Wire) Connections
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL 4.10 Drawing, Full Duplex (4-Wire) Connections 2825R-UM REV 3.0... -
Page 18: Drawing, Push-To-Talk Microphone Connections
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL 4.11 Drawing, Push-To-Talk Microphone Connections 2825R-UM REV 3.0... -
Page 19: Drawing, Operator Connections, Headset
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL 4.12 Drawing, Operator Connections, Headset 2825R-UM REV 3.0... -
Page 20: Installation And Operation
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL INSTALLATION AND OPERATION Operation The Model 2825R/24/XX AMCOM II rack mount diver communicator is designed to mount in a standard electronic equipment rack, 19 inches wide. The unit has connections located on both the front and rear of the enclosure, to facilitate system wiring. -
Page 21: Modes Of Operation
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL fall rapidly. It is a good idea to leave the unit on for five minutes before relying upon the battery condition indicator. Modes Of Operation The 2825R has the ability to operate in either 2-Wire or Full Duplex (4-Wire). Both the diver and tender can be connected in either mode and a combination of modes can be used. -
Page 22: Volume Controls - 2-Wire
In 2-wire mode the tender must press the Push-to-talk Switch to be heard. If you are using the Amron Remote Push-to-Talk, Model 2821-28, the tender may press the Push-to-talk Switch on the belt module. -
Page 23: Other Diver Controls - 2-Wire
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL The optimum settings are when controls are closely matched, with differences compensating for differences in diver levels. 5.5.1 Tender To Diver While tender is talking into the panel speaker and depressing PTT switch, tender adjusts this volume control to a comfortable diver hearing level. -
Page 24: Other Tender Controls
Connect tender headset earphones to Headset (input), and headset microphone to Tender Microphone (input). Turn speaker off to avoid acoustic feedback. Operation with speaker is possible by extending tender's headset away from the speaker. Use Amron Model 2822-28 headset extension cable (25 foot). - Page 25 2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL also functional when using an AMRON headset, and headset extender (Model 2821-28). 5.8.5 Speaker On/Off Switch For normal operation the speaker switch is left on. When operating in noisy conditions, it may be advantageous to use a headset to cut out the background noise.
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Page 26: Maintenance And Troubleshooting
If that does not resolve the problem, then go to the troubleshooting section to determine the cause. 4. Identify the microphone and headset leads. When using an Amron headset, the microphone is the red banana plug and the headset is the black banana plug. -
Page 27: General Maintenance
If that does not resolve the problem, then go to the troubleshooting section to determine the cause. 4. Identify the microphone and headset leads. When using an Amron headset, the microphone is the red banana plug and the headset is the black banana plug. -
Page 28: Recommended Maintenance Schedule
6.3.4 Yearly Check For maximum service life, it is recommended that the diver communicator be sent back to Amron for a yearly check. 6.3.5 Long Term Storage If the diver 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 29: Troubleshooting
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Troubleshooting Most problems are usually simple issues that can often be found by careful inspection of the diver communicator, diving umbilical, and diver helmet wiring. The following section will describe the troubleshooting procedure for several common issues. If these sections do not cover your particular issue, it is recommended that the diving umbilical be disconnected from the diver communicator and the check-out procedures in section 6.1 be conducted. - Page 30 If the fuse is open, replace with the same type: 3.15 Amp, 250V, Fast Acting. Close the lid; re-install the screws and re- test the communicator. If the communicator still appears dead, contact Amron per section 2.2 for further assistance.
- Page 31 If this does not solve the problem and the umbilical cannot be immediately replaced, then operate in 2-Wire mode until a replacement umbilical can be used. Amron strongly recommends the use of the Amron CC1 communication cable. It has been specially designed for clear communications and long service life.
- Page 32 Open the front panel and inspect as described in section 7.3. If that does not resolve the problem then contact Amron per section 2.2 for further assistance. 2825R-UM...
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Page 33: Full Duplex (4-Wire) - What, Why And How
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL FULL DUPLEX (4-WIRE) - WHAT, WHY AND HOW Amron has designed the AMCOM Full Duplex (4-WIRE) mode from the ground up, taking advantage of state-of-the-art electronics technology to provide a superior hard wire communication experience. -
Page 34: What Is Full Duplex (4-Wire)
On the surface, a tender using a headset may get some acoustic feedback via the PANEL SPEAKER. The solution is to put some distance between the tender and the PANEL SPEAKER by using the Amron Model 2822-28 Walk-and-Talk Module accessory. Alternatively, the PANEL SPEAKER can be turned off using the SPEAKER SWITCH located on the front panel. -
Page 35: Why Full Duplex (4-Wire)
Amron Diver Communicator uses an independent microphone amplifier for each diver circuit as well as for the tender. This allows Amron Diver Communicators to use the power of common-mode rejection to cancel any coupled noise for each microphone as well as providing less loading of the microphone than in 2-Wire mode. - Page 36 To revert back to 2-Wire mode, simply remove black banana plug from DIVER EARPHONE (black) jack and plug it on top of DIVER MICROPHONE (red) plug. Things to keep in mind when using Amron's AMCOM diver communicators: With the AMCOM diver communicators you can mix 2-Wire and Full Duplex (4-Wire) modes of operation.
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Page 37: Drawings And Schematics
The corresponding parts lists for each drawing are detailed in the parts lists section, or are included as part of the drawing. All drawings are at their current revision level as of the date of printing. Amron reserves the rights to revise the documentation without notification. -
Page 38: Schematic 2825R/24
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Schematic 2825R/24 2825R-UM REV 3.0... -
Page 39: Schematic Option /26Dsp3
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Schematic Option /26DSP3 2825R-UM REV 3.0... -
Page 40: Schematic 28A Wireless Tender Option
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Schematic 28A Wireless Tender Option 2825R-UM REV 3.0... -
Page 41: Schematic -4002 Chamber Lock Call Option
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Schematic -4002 Chamber Lock Call Option 2825R-UM REV 3.0... -
Page 42: Parts Identifier, Front Panel Model 2825R/24
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Parts Identifier, Front Panel Model 2825R/24 2825R-UM REV 3.0... -
Page 43: Parts Identifier, Options /26Dsp3, /28A, 4002
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Parts Identifier, Options /26DSP3, /28A, 4002 2825R-UM REV 3.0... -
Page 44: Parts List General
The parts lists in this manual are for the current model of diver communicator as of the printing date. To Order Replacement Parts Contact: Amron international, Inc. 1380 Aspen Way, Vista, California, 92081 U.S.A. Telephone: (760) 208-6500 Fax: (760) 599-3857 Email: sales@amronintl.com... -
Page 45: Amcom Ii Rack Mount Model 2825R/24
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Amcom II Rack Mount Model 2825R/24 PART # DESCRIPTION 2832-202-03 PC CARD ASSEMBLY AMCOM II STD 2825R/24-400 AMCOM II FRONT PANEL ASSEMBLY 2405-28 MICROPHONE PUSH-TO-TALK 2890-04 BATTERY RECHARGE 6V GEL 5AMP MS-3106A-28-16P MS CONN CABLE 20 PIN M MS-3057-16A MS CABLE CLAMP 24/28 SHELLS... -
Page 46: Sub Assembly 2825R/26-400M-Dsp3, Front Panel Assembly
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL PART # DESCRIPTION 91A1AB24B15 POTENTIOMETER 10K LINEAR 1498-103 JACK BANANA BLACK 1498-102 JACK BANANA RED 1498-107 JACK BANANA YELLOW KLN-500B-1/4 KNOB BLACK AL .5DIA .25INSHAFT LEDGREEN LEDGREEN BRITE LT2462-24-D51 LED BI-COLOR RED/GREEN LEDHOLDER-BLK.25 MOUNTING CLIP FOR 5MM LED 14003-1... -
Page 47: 28Xxr-Fs-01 Spares Kit For 2825R/24
2825R TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL 28XXR-FS-01 Spares Kit For 2825R/24 PART # DESCRIPTION KLN-500B-1/4 KNOB BLACK AL .5DIA .25IN SHAFT 1498-102 JACK BANANA RED 1498-103 JACK BANANA BLACK 1498-107 JACK BANANA YELLOW 14002B 5-WAY BINDING POST (BLACK) 14002R 5-WAY BINDING POST (RED) 91A1AB24B15...
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