Amron 2840R-01 Four-Diver Rack Mount Communicator

SKU

2840R-01

Please contact Amron directly for GSA pricing at 1-877-462-6700.

$7,210.00

Restrictions / Notifications

Non-Returnable/Non-Cancelable
This item cannot be canceled or returned once an order has been placed.

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Specs

More Information
	ENHANCEMENTS High Audio Fidelity Ultra-low noise, wide band width amplifier circuit combined with noise suppression circuitry produces crystal clear speech. The amplifier’s Automatic Gain Control (AGC) circuit prevents audio signal distortion and enhances speaker protection and audio quality. Extended Battery Operation Time The audio amplifier card deploys a state-of-the-art, Class-D digital audio power amplifier. It has very low power dissipation, generates minimal heat, and enhances battery life. Ultra-Low Electromagnetic Interference (EMI) EMI is minimized through spread-spectrum and de-phase control techniques providing for optimum integration with diving systems. Audio In/Out Connections Audio IN and audio OUT RCA connections are provided for receiving and sending standard audio line-level signals to and from another device. Two rack mount communicators can be interconnected for redundancy requirements or can double the number of users as needed. FEATURES Separate channels and volume controls for each diver and tender to accommodate individual earphone and microphone adjustments, equipment variations and individual comfort levels. Divers’ umbilicals can be set up on 4-wire mode (full duplex) or 2-wire mode (push-to-talk) or any combination of the two modes for each diver. Communicator comes standard with rear mounted MS connector, providing connections to diver and tender inputs and outputs. Ability to use both dynamic and pre-amplified diver microphones with a unique circuit that detects microphone type and automatically adjusts volume levels. Weatherproof push-to-talk microphone for better voice intelligibility topside. See below for other recommended equipment. Battery Condition Indicator - Visual LED indicator of battery condition. Internal charging system with battery back-up allows for simultaneous charging and operation of the unit while protecting the rechargeable battery from being overcharged. Back-up battery automatically supplies power to the audio amplifier when AC power is disconnected to allow for continued operation up to 25 hours. SPECIFICATIONS Input Impedance (Each Input): 250 Ω 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: 4 Ω Power Supply Voltage: 12 V_DC nominal (9 V_DC min - 16 V_DC max) AC Power Operating Range: 90-264 VAC, 50-60 Hz Sensitivity (Input): 0.5 mV Output Power (RMS @ 4 Ω load, 12 VDC): 10 watts audio Rear Connector Input/Output: 20 pin female MS Enclosure: 19 in. rack, aluminum, black anodized Back-Up Battery: 1 ea. 12 VDC rechargeable battery Battery Life: 25 hours Height: 7 in. (17.8 cm.) Width: 19 in. (48.3 cm.) Depth: 13 in. (33.0 cm.) Weight: 19.5 lb. (98.8 kg) AMCOM IV 2840R-01 Four-Diver Rack Mount Communicator Includes (1) Amron 2405-28 Hand-Held Push-to-Talk Microphone (1) Amron 2890-05 12 VDC Rechargeable Sealed Lead Acid Gel-Cell Battery (1) MS-3106A-28-12P - MS Connector - 26 Pin for Four-Diver Communicators (1) MS-3057-16A+MS-3420-16 MS Connectors Cable Clamp and Bushing for Size 24/28 Shells (1) Amron P-2392 Power Cord (1) Amron 284XR-UM Four-Diver Rack Mount Communicator User Manual AVAILABLE OPTIONS Amron 2401-28 Deluxe Headset with Boom Mic Amron 2460-28 Standard Headset with Boom Mic Amron 2822-28 Remote Walk-and-Talk (4-wire mode) Amron 2821-28 Remote Walk-and-Talk (2-wire mode) TECH NOTE All communicators will inherently transfer topside noise to the divers when the tender speaks directly into the communicator’s panel speaker. To eliminate background noise at the surface, use the 2405-28 Push-to-Talk Microphone, included with this model. For optimum communications, we recommend purchasing the 2401-28 Deluxe Headset with Boom Mic. For tender maneuverability, use the 2401-28 Deluxe Headset with Boom Mic along with the 2822-28 Remote Walk-and-Talk (4-wire mode) or the 2821-28 Remote Walk-and-Talk (2-wire mode). For air and helium communications, order the 2840R-02 Four-Diver Rack Mount Communicator with DSP3 Helium Speech Unscrambler.

Information

Our engineering team has integrated the latest in digital advancements to produce the industry’s most intelligible and reliable diver communicators. Our built in quality that Amron is known for makes the 2840R series the most versatile and durable communicators anywhere in the world!

The AMCOM™ IV 2840R-01 Four-Diver Rack Communicator features separate channels and volume controls for each diver and the tender so that uplink and downlink paths can be customized for varying equipment configurations and individual comfort levels.

The newest version of the AMCOM™ IV Rack Mount Communicator has the same versatile user-interface and great sound quality as its predecessor with several new digital enhancements: (1) High-Audio Fidelity; (2) Extended Battery Operation; (3) Flexible Gain Settings; (4) Ultra-Low Electromagnetic Interference (EMI); and (5) Audio In/Out Connections. The Specs tab outlines the many outstanding features that continue to make this model the most popular and powerful communicator on the market today.

Resources

ATTACHMENTS

Amron 2840R-XX-UM Series Four Diver Rack Mount Communicator User Manual REV 5.0

(Size: 680.2 KB)

Amron 28XXR Cutout REV 1

(Size: 62.2 KB)

Amron Panel MIC Data Sheet Rev 3.0

(Size: 398.5 KB)

Amron Rackmount Communicators Amplifier & Options Card Replacement Chart

(Size: 4.7 MB)

FAQ's

How can I test for a blown fuse on my Amcom series communicator?

If the unit is plugged into a live outlet and turning on the switch does not cause the AC POWER LED to light up, then the fuse(s) are probably blown. Unplug the unit from the outlet, remove the fuses and check continuity with a multimeter. Replace any fuse that does not show continuity.

What type of cable do I need to connect my Amron communicator to my Outland video system?

Amron communicators and Outland Technology’s video systems have a RCA Phono Jack. To connect the two systems together, you will need an audio cable with RCA Plugs on each end.

Should I use a GFI when operating my radio off AC power?

When operating your Amron Diver Communicator on AC, it is critical to use a Ground Fault Circuit Interrupter (GFCI) or isolation transformer for tender and diver safety. Surges and spikes are common on AC lines found on ships, generated locally, or at the end of long extension cable runs and can exceed 1kVolt. Such surges and spikes can cause the fuse to blow on the amplifier card assembly. The power supply is designed so that such a failure will be isolated and will not cause a safety issue to the tender or divers. It is strongly advised that your Amron Diver Communicator be operated on an AC circuit with a high quality surge arrester or an AC isolation transformer.

Can my Amcom communicator work on 240V / 60Hz?

Yes, the unit has an operating range of 90-264 VAC, 50-60 Hz..

What are the environmental parameters that Amron's comms units can be used in?

Temperature: Class C Ambient Temperatures –25°C to +55°C Humidity: Class A Relative humidity up to 96% at all relevant temperatures, no condensation Vibration: Class A On bulkheads, beams, deck, bridge EMC: Class B All locations including bridge and open deck

When my battery does not appear to be holding a charge, how do I know if the problem is a bad battery or if the charger is broken?

To determine whether the problem is with the battery or charging circuitry, you will need to verify if the battery is being charged.

Troubleshooting:

Unplug your communicator and turn on the POWER switch.
Measure the voltage across the yellow PUSH-TO-TALK (PTT) jack and write down this value for future reference. It should be greater than 9 Volts.
Plug the communicator into an AC source and verify that the AC POWER LED on the front panel turns on.
Re-measure the voltage across the PTT jack and note it down for future reference. It should be higher than the previous measurement.
If the AC POWER LED does not light up when the communicator is plugged in, then check fuse located on the amplifier card.
Allow the communicator to charge overnight.
Unplug the communicator and re-measure the voltage across the PTT jack.
1. If it is the same or less than the voltage you measured previously, then the charger is broken and the communicator needs to be sent in for repairs
2. If the voltage higher than previous measurement but less than 13.5 Volts, then the battery is bad and needs to be replaced.
3. If it is greater than 13.5 Volts but it still appears that the battery is not holding a charge, contact Amron for additional support.