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2 Diver Wireless Tender Communicator - User Manual - Submarine ...

2 Diver Wireless Tender Communicator - User Manual - Submarine ...


CONTROLS & CONNECTIONSOTHER CONNECTIONS 5.6EXTERNAL BATTERY - (Input) - External 12 VDC power input, to operate the unit froman external battery or power source. Power requirements are 12 volts DC (nominal), notless than 9.5 or more than 18 volts. Source must be able to supply a peak current of threeamps for proper operation. With the model /23 Option these jacks are used for charging theinternal batteries.It is highly recommended to use an Amron External Charger, Model 2823-602 as externalpower supply. The Amron External Charger was specifically designed for use with allAmron communicators and has a high degree of insulation between the primary andsecondary circuits for diver protection and safety.WARNING: When using an external power source, it is required to use an insulated DCpower supply that has very low ripple voltage. It has to be properly insulated from AC linefor diver protection and safety. An improperly insulated power supply could cause diverelectric shock.TAPE RECORDER – provides an isolated output, of both diver and tender conversations(balanced), suitable to drive a tape recorder or audio input of a VCR. This feature allowsrecording of conversations between diver and tender.AC POWER – AC power cord is mounted in the option panel located on right side of thecommunicator front panel. The option panel has an AC power indicator to identify thepresence of AC power.Communicator operates with both 110V and 220V (50 or 60 Hz). There is an internalpower supply card that detects the supplied AC voltage either 100V or 220V andautomatically switches the internal relays to the proper voltage. There is no manual switchto select the supplied voltage as it switches automatically inside the power supply. Also thisinternal power supply regulates the voltage to 14 VDC to supply the amplifier card andcharges the internal batteries at the same time.10

CONTROLS & CONNECTIONSOPTIONS 5.7HELIUM SPEECH UNSCRAMBLER /26DSP2The /26DSP2 option is located in the option section of the front panel assembly.ON/OFF SWITCH: Allows the selection of air or helium operation. In the “OFF” positionthe audio bypasses the Unscrambler. In the “ON” position the audio is processed bythe Unscrambler, allowing for the correction of the helium speech.TREBLE BOOST: This control allows the High Frequency response of the unit tocompensate for high frequency fall-off of the diver microphone. The Treble Boost controlhas five selections ranging 1-5. The treble boost feature allows for optimum frequencyenhancement and improved intelligible speech from the diver’s voice.DEPTH CONTROL: Selects the amount of frequency shift required to process the divervoice back to an intelligible level. The frequency shifting algorithm changes the amountof correction to the raw helium speech.MODE SWITCH: This switch performs two functions, Mode A/B and Noise ReductionFilter.MODE A/B: Selects two different processing modes for the correction of raw heliumspeech. Mode A is typically used for shallow depths with lower concentrations ofHelium, while Mode B is used for deeper depths requiring higher concentrations ofHelium. There is no specific depth limit for either mode; both are capable of operating tothe maximum depth of 2000 FSW. Based on the mode setting, the frequency shiftingalgorithm’s function will automatically change as well.NOISE REDUCTION FILTER (NRF): Incorporates a complex DSP algorithm whichfilters out background noise while allowing the diver’s speech to be clear and intelligible.Amron NRF automatically captures the frequency spectrum of applied backgroundnoise within the audio frequency bandwidth and reduces it without affecting the diver’sspeech. The NRF has four adjustment levels for the reduction of background noise inboth depth modes A & B. When in mode A, simply toggle the Mode Switch from A to Band back to A. In 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. Based onthe filter level, the operator will hear a number of beeping tones from 1-4 thatcorresponds with the blue LED indicators.NRF INDICATOR: There are four blue LED indicators that correspond to the presentsetting of the noise reduction filter ranging 1-4.WIRELESS TENDER, /28FDW OPTION - This option is mounted in the right hand side of the frontpanel. This Wireless Tender Option is for four-wire (Simulcom) operation only. System comesstandard with a remote wireless tender module.WIRELESS OPTION PANEL: Comes standard with antenna and power on/off switch. The“ON/OFF” switch powers the wireless PC card inside the communicator.11

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