Instruction Manual - DECA | Diving Equipment Company of America

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INSTALLATION & OPERATION OPTIONS 6.11 WIRELESS TENDER OPTION MODEL /28FDW This option is installed in the right hand section of the panel. Amron’s Full Duplex (Simulcom) Wireless Tender is designed for the top-side tender to communicate to divers with hands-free operation and no required buttons to push. This wireless unit allows mobility for the tender while checking equipment and still maintaining constant contact with the divers. This Option can also be used in the two wire mode to monitor the diver conversations, but not to talk to the diver. The Wireless system comes standard with 40 channel combinations which gives the ability to use up to 40 different radios set at different channels in close proximity without cross-frequency problems. Additional 2829-01 Wireless Headset and Transceiver Kits can be purchased for use with the Amcom as standby “listen only” devices, as only one headset on the system can have listen and talk priority to the divers. The design allows the capability to add an unlimited number of remote listen only headsets for topside personnel. The units operate on the FM band at 902-928 MHz up to a range of ¼ mile. There is no requirement for FCC approval because the RF Power is only 200mW and transmitter output 50mV/m (FCC part 15). The remote unit (transmitter/receiver) is housed in a rugged plastic casing that can be clipped to a belt or slipped into a pocket. A single charge of the NiCad battery from the included AC adapter is capable of operating (transmitting and receiving) continually for up to 5 hours. In standby mode, battery will last for up to 8 hours. The standard headset is a tough over-the-ear single ear muff design with adjustable boom microphone. Operation of the unit is automatic; speaking into the remote unit transmits a RF signal to the diver. Diver speaking activates the option, causing it to transmit a RF signal to the remote tender. Because of the duplex operation the transmission occur in both directions at the same time. In addition to the remote unit, there is a master transceiver inside the communicator. Both channel selector switch (A&B) and dipswitches (located under the battery) accommodate 40 different channels with operating frequency range 902-928MHz. Manufacture sets both wireless communicator and wireless remote module to work on Channel A with dip-switches setting 1,1,1,1,0,0,0,0 (1 is ON). In order to change channel of operation, it is required to apply changes to both units (communicator and remote). Manufacture recommends changing wireless channels to be done by technician. IMPORTANT: When the wireless option is not used, turn the option panel switch to “OFF”. When option panel switch is turned “ON”, the wireless remote should be “ON”. Otherwise a static noise may be heard through the communicator’s panel speaker as it scans for the available Remote Wireless Tender. OPERTATION: Turn option power switch to ON, turn remote unit ON/OFF Volume to ON, set remote unit to Talk Mode (Talk Button is DOWN) and Channel A (Channel Button is UP), and plug headset to remote unit. At the remote unit, confirm that Battery Indicator (located next to ON/OFF Volume) should be OFF, as indication that battery is good. Also confirm that Channel A Indicator is ON (Yellow). When battery drains below operation level, Battery Indicator turns ON (RED); communication becomes noisy and will cut out. 21
INSTALLATION & OPERATION OPTIONS (Continued) 6.11 HELIUM UNSCRAMBLER OPTION /26HSU The Helium Unscrambler option is installed into the option panel on right side of the communicator. Communicator with this option accommodates a wide range of operating depths. Two modes of operation have been incorporated. The first mode samples and replays the speech in a fixed pattern which lends itself well to the 300 FSW (100 meters) range. The second mode samples and replays the speech in a complex pattern stored in a solid state permanent memory device (EPROM). Diver radios configured with this option are only supplied with the AC power option. This is due to the power requirements of the Unscrambler option. The radio can be operated in the air mode by turning off the helium Unscrambler. Operation of the helium Unscrambler involves turning the unit on and adjusting the depth control to provide the proper amount of voice correction. The Unscrambler offers two modes of operation, mode A and mode B. These are generally related to depth. Less than 300 feet, Mode A is recommended. Greater than 400 feet, Mode B is recommended. There is an over lap between 300 to 400 feet where it is user preference. Either mode of operation can be used at any depth; the amount of correction available is not limited by the mode, only the style of correction changes. A Treble Control is provided to enhance the diver’s microphone performance. Helium voice is composed of higher frequency. Microphone performance is critical for proper operation. The treble adjustment allows the operator to provide frequency enhancement or correction to enhance the intelligibility of the diver’s speech. Adjustment is done by subjective method, what sounds the best and is the easiest to understand. The Depth Control is used to change the amount of shift in the frequency of the diver’s voice. The depth control is advanced as the diver’s depth increases. There is a certain amount of interaction between the controls, and also a difference between diver voices, therefore it is necessary to tune the unit to the diver. Intelligibility is the desired result; each operator will find a combination which works best. Simplex and Simulcom operations are possible with the Amcom Unscrambler. In Simplex mode, the tender's push-to-talk switch interrupts signals from the diver. In Simulcom mode, the tender will hear the diver at all times and tender must use a headset to talk to the divers without using the push-to-talk switch. Use of a headset to monitor HeliOx speech is recommended to enhance Intelligibility. 22
Page 1 and 2: User Manual For Amron International
Page 3 and 4: TABLE OF CONTENTS Theory of Operati
Page 5 and 6: GENERAL INFORMATION GENERAL INFORMA
Page 7 and 8: OPTIONS OPTIONS 3.1 Model /26 Heliu
Page 9 and 10: CONTROLS & CONNECTIONS CONTROLS AND
Page 11 and 12: CONTROLS & CONNECTIONS DIVER CONNEC
Page 13 and 14: CONTROLS & CONNECTIONS OPTIONS (con
Page 15 and 16: CONTROLS & CONNECTIONS DRAWING, SIM
Page 17 and 18: CONTROLS & CONNECTIONS DRAWING, OPE
Page 19 and 20: INSTALLATION & OPERATION BATTERY CO
Page 21 and 22: INSTALLATION & OPERATION VOLUME CON
Page 23: INSTALLATION & OPERATION OTHER TEND
Page 27 and 28: INSTALLATION & OPERATION SIMULCOM -
Page 29 and 30: INSTALLATION & OPERATION SIMULCOM -
Page 31 and 32: THEORY OF OPERATION AUDIO VOLUME CO
Page 33 and 34: THEORY OF OPERATION FUNCTIONAL BLOC
Page 35 and 36: MAINTENANCE COMPREHENSIVE 2-WIRE &
Page 37 and 38: MAINTENANCE PROBLEMS AND THEIR POSS
Page 39 and 40: DRAWINGS DRAWINGS & SCHEMATICS 9.1
Page 41 and 42: DRAWINGS SCHEMATIC 2830A/24-MS 9.3
Page 43 and 44: DRAWINGS SCHEMATIC OPTION 2828-FDW
Page 45 and 46: DRAWINGS PARTS IDENTIFIER, 2324-202
Page 47 and 48: DRAWINGS PARTS IDENTIFIER, FRONT PA
Page 49 and 50: PARTS LIST GENERAL 10.1 The followi
Page 51 and 52: PARTS LIST AMCOM III MODEL 2830A/24
Page 57 and 58: PARTS LIST 2830A-400M FRONT PANEL A

Instruction Manual - DECA | Diving Equipment Company of America

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