User manual GAI-TRONICS DEX-203

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[. . . ] Pub. : 42004-692L2C GAI-TRONICS® CORPORATION A HUBBELL COMPANY Model DEX-103 and DEX-203 Hazardous Area Driller's Intercom Stations TABLE OF CONTENTS Confidentiality Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 System Requirements and Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Available Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] manuals\42004-692l2c. doc 11/10 MODEL DEX-103 AND DEX-203 DRILLER'S INTERCOM STATIONS Pub. : 42004-692L2C Page 8 of 13 Auxiliary Devices Terminal block TB1 is provided for connection of the speaker, system cable, footswitch, and beacon. Conductor ends can be stripped and terminated with or without a wire ferrule. Table 2. Recommended Cable Sizes Cable Use Size System Power Beacon Footswitch Speaker cable 2-conductor twisted pair, 0. 75 mm2 is typical 3-conductor, 4. 0 mm2 is typical 2-conductor, 1. 0 mm2 is typical 2-conductor, 0. 75 mm2 is typical 2-conductor twisted pair, 1. 0 mm2 is typical 1. Digital stations require termination of a 2-conductor twisted pair cable on system terminals A and B only. Analog stations require termination of a 4-conductor twisted pair cable (A/B twist & C/D twist) on system terminals A­D. Maximum System Cable Lengths Cable Capacitance 0. 75 mm2 Wire 10 nf/100 meters 4. 5 nf/100 meters 2000 meters 3000 meters 2. After all connections are made, inspect and clean the machined and threaded surfaces of both the termination cover and box. Install and hand-tighten the cover to the box. f:\standard ioms - current release\42004 instr. manuals\42004-692l2c. doc 11/10 MODEL DEX-103 AND DEX-203 DRILLER'S INTERCOM STATIONS Pub. : 42004-692L2C Page 9 of 13 System Interconnection Refer to Figure 6 for a typical system wiring diagram. Consult the central switch manual for further details on equipment connections to the central switch. Figure 6. Typical system interconnection diagram f:\standard ioms - current release\42004 instr. manuals\42004-692l2c. doc 11/10 MODEL DEX-103 AND DEX-203 DRILLER'S INTERCOM STATIONS Pub. : 42004-692L2C Page 10 of 13 Operation The Driller's Intercom stations can be operated in hands-free, switched-duplex mode when the conditions permit. If the conditions are not acceptable, the user can switch to simplex mode by depressing the T button. In some situations (example: high ambient noise levels or stations in close proximity), the station must be operated in simplex mode at all times. Intercom Communication Modes Master Communication - Communication between two stations can be automatically enabled during the system start-up, or enabled/disabled by the master station. To enable communication depress 6T and the number of the radio channel. Refer to the "Listening to the Radio Channel" of the Central Switch manual for more details. NOTE: The associated slave station must be configured to transmit to the radio channel. The LED on the front panel illuminates to indicate a call is in progress. NOTE: For digital stations only, the beacon output can be activated for a variety of conditions. Refer to the "Attendant Contacts" section of the Central Switch manual for details. Depress and hold the T button or the footswitch and speak into the microphone to transmit audio. Audio from the slave station is broadcast over this station's speaker when the T button or footswitch is released. [. . . ] THD @ 1 kHz, 18 watts Loudspeaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 or 16 ohms Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-button keypad, footswitch, speaker volume adjustment (adjusted through keypad) Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Indication LED Beacon control (digital only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]

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