2825R-XX SERIES 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-XX Two Diver Rack Mount Communicator ..........2 OPTIONS AND ACCESSORIES ......................3 Options ............................
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL INTRODUCTION AND SPECIFICATIONS Introductions The 2825R-XX Series AMCOM II Rack Mount Diver Communicators are a full featured, two- diver, hardwire communicator that uses state-of-the-art electronics to provide clear and reliable communications. The 2825R-XX 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.
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Amcom II Model 2825R-XX 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 can be used as required.
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. 2.1.1 Model 2825R-02 With DSP3 Helium Speech Unscrambler The AMRON’s DSP3 Helium Speech Unscrambler uses state of the art Digital...
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2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Model 2821-28 – Amron Remote Push to Talk Module 2.2.5 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...
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL CONTROLS AND CONNECTIONS Before using the 2825R-XX diver communicator, the tender should be familiar with all the operating controls and connections. While reading this manual, you will find capitalized words such as PANEL SPEAKER.
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...
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Tender Microphone Jack – This is a dual banana jack (color-coded red) that 3.2.2 functions as the microphone input from the tender's headset. It is only used if the tender is in Full Duplex (4-Wire) mode. On the 2825R-XX, the TENDER MICROPHONE VOLUME control adjusts the sensitivity of the input.
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL 3.4.2 Diver Earphone - This is a dual 5-way binding post jack (color-coded black) that functions as the output for the diver's earphone. It is only used when the diver is in Full Duplex (4-Wire) mode.
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Option Controls: DSP3 Helium Speech Unscrambler The controls for the DSP3 Helium Speech Unscrambler (HSU) are located in the section immediately right of the DIVER 2 controls on the front panel. On/Off Switch –...
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL INSTALLATION AND OPERATION Operation The 2825R-XX Series 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.
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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.
2825R-XX by using the Amron Model 2822-28 Remote Walk-and-Talk Module. In this way, the PANEL SPEAKER can allow other members of the diving crew to monitor the dive operation or to communicate to the diver by pressing the PUSH-TO-TALK BUTTON and talking into the speaker.
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).
The communicator has an automatic speaker disconnect relay which disconnects the front panel speaker when using the hand held microphone. This greatly reduces the background noise during transmissions to the divers. This feature is also functional when using an AMRON headset, and headset extender (Model 2821-28). 4.7.5 Speaker On/Off Switch For normal operation the speaker switch is left on.
Amron’s advanced NOISE REDUCTION FILTER (NRF) incorporates a complex DSP algorithm which filters out background noise while allowing the diver’s speech to be clear and intelligible. Amron’s NRF automatically captures the frequency spectrum of applied background noise within the audio frequency bandwidth and reduces it without affecting the diver’s speech.
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.
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.
5.3.4 Yearly Check For maximum service life, it is recommended that the diver communicator be sent back to Amron for a yearly check. 5.3.5 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.
2825R-XX SERIES 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 5.1 be conducted.
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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 for further assistance.
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PANEL SPEAKER of the 2825R-XX. If the tender wants to operate with the headset and leave the PANEL SPEAKER on, Amron recommends the tender move away from the 2825R- XX by using the Amron Model 2822-28 Remote Walk-and-Talk Module. This module provides an "extension"...
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.
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...
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Amcom II Rack Mount, Model 2825R-01 PART # DESCRIPTION 570-1008-21 AMPLIFIER PC CARD ASSEMBLY FOR 2825R-01 2825R/24-400 AMCOM II RACKMOUNT FRONT PANEL ASSEMBLY 190-0101-00 POWER SUPPLY AC/DC 90-264 VAC 2405-28 MICROPHONE PUSH-TO-TALK 2890-05 RECHAREABLE SEALED LEAD-ACID BATTERY 12VDC MS-3106A-28-16P...
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Sub Assembly 2825R/26-400M-DSP3, Front Panel Components PART # DESCRIPTION 24XX-MIC PANEL MICROPHONE ASSEMBLY HANDLE SA818 SPEAKER 8 OHM 15 WATT SW-201 SWITCH TOGGLE DPDT SW-208 SWITCH TOGGLE DPDT-MOM. 91A1AB24B15 POTENTIOMETER 10K LINEAR KLN-500B-1/4 KNOB BLACK AL .5DIA .25INSHAFT 1498-103...
2825R-XX SERIES TWO DIVER RACK MOUNT COMMUNICATOR USER MANUAL Optional Spares PART # DESCRIPTION 570-1008-21 AMPLIFIER PC CARD ASSEMBLY FOR 2825R-01 570-1008-21-HSU AMPLIFIER PC CARD ASSEMBLY FOR 2825R-02 570-1006-02 DSP3 HELIUM UNSCRAMBLER PC CARD ASSEMBLY 190-0101-00 POWER SUPPLY AC/DC 90-264 VAC 2405-28 MICROPHONE PUSH-TO-TALK 2890-05...
Amron’s literature covering this product. Oxygen Treatment Hoods and accessories are excluded and limited to 90 days. 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.
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