Rack Mount 2-Diver Communicator with Helium Speech Unscrambler

Amcom™ II Rack Mount 2-Diver Communicator with Helium Speech Unscrambler

Amcom™ II Rack Mount 2-Diver Communicator with Helium Speech Unscrambler

Amron’s new DSP2 Helium Speech Unscrambler (HSU) utilizes the latest in technological advancements. The heart of our design incorporates dual digital signal processors. This revolutionary concept allows our HSU to be truly the first unscrambler to use both frequency and time domain technologies for real-time audio processing. This state of the art digital design accommodates a multitude of functions ranging from the correction of the diver’s raw helium speech to normal intelligible voice levels, advanced treble boost and complex noise reduction filters (NRF).

Features

Real-time audio processing uses both frequency and time domain technologies for optimized performance over a wide range of depths and background noise
Treble Boost Control provides means of adjustment to enhance the diver’s microphone performance
Treble Boost Control feature allows for optimum frequency enhancement and improved intelligible speech from the diver’s voice
The Depth Control increases or decreases the diver’s depth algorithm changing the amount of correction to the raw helium speech
Mode Switch allows for two choices of operation
- Mode A is typically used for shallow depths with lower concentrations of Helium
- Mode B is used for deeper depths requiring higher concentrations of Helium
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
Noise Reduction Filter has four adjustment levels for the reduction of background noise in both depth modes A and B
- Mode A, simply toggle the mode switch from A to B and back to A - Each time a toggle cycle is completed, the filter will advance to the next level
- Mode B, simply toggle the mode switch from B to A and back to B - Each time a toggle cycle is completed, the filter will advance to the next level

Rechargeable with Internal Charger 2-Diver Rack Mount DSP2 Communicator: Part Number 2825R/24/26DSP2 Includes

Hand-Held Push-to-Talk Microphone: Part Number 2405-28
(2) 6VDC Spring-Top Gel-Cell Rechargeable Batteries: Part Number 2890-04 - Expected life: 20 Hrs
MS Connector – 20 Pin: Part Number MS-3106A-28-16P
MS Connector Cable Clamp: Part Number MS-3057-16A
Power Cord: Part Number P-2392
User Manual

Rechargeable with Internal Charger 3-Diver Rack Mount DSP2 Communicator: Part Number 2830R/24/26DSP2 Includes

Hand-Held Push-to-Talk Microphone: Part Number 2405-28
(2) 6VDC Spring-Top Gel-Cell Rechargeable Batteries: Part Number 2890-04 - Expected life: 20 Hrs
MS Connector – 20 Pin: Part Number MS-3106A-28-16P
MS Connector Cable Clamp: Part Number MS-3057-16A
Power Cord: Part Number P-2392
User Manual

Rechargeable with Internal Charger 4-Diver Rack Mount DSP2 Communicator: Part Number 2840R/24/26DSP2 Includes

Hand-Held Push-to-Talk Microphone: Part Number 2405-28
(2) 6VDC Spring-Top Gel-Cell Rechargeable Batteries: Part Number 2890-04 - Expected life: 20 Hrs
MS Connector – 26 Pin: Part Number MS-3106A-28-12P
MS Connector Cable Clamp: Part Number MS-3057-16A
Power Cord: Part Number P-2392
User Manual

Specifications

Audio Power Output: 20 Watts per channel
Frequency Response: 300Hz to 12kHz
Isolation Transformer: Split Bobbin Medical Grade
Dimensions: 7 in. H x 19 in. W x 13in. D (17.8 cm x 48.3 cm x 33.0 cm)
Weight: 20 lbs (9.1kg)
Power: 110/220VAC 50/60 Hz (automatic sensing), or 2 Internal Batteries 12VDC

Tech Note

All communicators will transfer topside noise to the diver when using the radio speaker only. To eliminate background noise and achieve clear concise communications, use a push-to-talk microphone or a headset or a remote walk & talk with a headset.

2 and 3 Year Extended Warranties are available for this product. Please refer to the Documents Tab for further information on these programs.

Product FAQ's:

Question: Does the noise reduction filter remove all the background noise from the diver's topside audio?

Answer: Depending on the settings you’re using, the sound level of the background noise could be reduced by as much as 50%, but it will never be eliminated.

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

Answer: 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.

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

Answer: 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 fuses, F1 and F2, to blow on the battery charger board and in extreme cases damage the charger circuitry. The battery charger 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.

Question: 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?

Answer: To determine whether the problem is with the battery or charger you will need to verify if the charger is properly charging the battery.

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 this AC POWER LED does not light up when the communicator is plugged in, then check fuses F1 and F2 on the charger Printed Circuit Assembly (PCA). Allow the communicator to charge overnight. Unplug the communicator and re-measure the voltage across the PTT jack. 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 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. If the voltage higher than previous measurement but less than 13.5 Volts, then the battery is bad and needs to be replaced. 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. less than 13.5 Volts, then the battery is bad and needs to be replaced. 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.

Question: Can you stack the banana plugs from the diver's communicators cable so you can have two divers on each diver channel?

Answer: Although it may be possible, we stronly discourage such operation. The added workload would cause overheating and stress to the amplifier card. Prolonged use in this condition will eventually cause perment damage and failure to the amplifier card.

Question: Can two batteries be charged at the same time if I run a splitter inline?

Answer: Yes, but it will take twice as long to charge the batteries.