User manual GAI-TRONICS DEX-202

[. . . ] Pub. : 42004-679L2D GAI-TRONICS® CORPORATION A HUBBELL COMPANY Model DEX-101, -102, -201, and -202 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Maximum Distance between Driller's Intercom Stations (in feet)* (DC) # of Stations 1 2 3 4 5 6 7 8 12 AWG Wire 14 16 18 *This chart is based on the following parameters: 1. V(max) = 27 V V(min) = 21 V Cable temperature rating = 90º C The American Wire Gauge resistance table 906 302 151 90 60 43 32 25 570 190 95 57 38 27 ------------- 358 119 59 35 ------------------------- 225 75 37 ------------------------------- For V(max) of 24 V, multiply the distance shown by a factor of 0. 47. f:\standard ioms - current release\42004 instr. manuals\42004-679l2d. doc 10/10 MODEL DEX-10X AND DEX-20X DRILLER'S INTERCOM STATIONS Pub. : 42004-679L2D 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 Digital: 2-conductor twisted pair, No. 22 AWG is typical Analog: 4-conductor twisted pair (A/B twist; C/D twist), No. 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 A-D. Maximum System Cable Lengths Digital Models Cable Capacitance 22 AWG 20 AWG Analog Models 22 AWG 20 AWG 30. 5 nf/1000 feet 13. 7 nf/1000 feet 6562 feet 9843 feet 6562 feet 9843 feet 4921 feet 6562 feet 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\42004-679l2d. doc 10/10 MODEL DEX-10X AND DEX-20X DRILLER'S INTERCOM STATIONS Pub. : 42004-679L2D 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\42004-679l2d. doc 10/10 MODEL DEX-10X AND DEX-20X DRILLER'S INTERCOM STATIONS Pub. : 42004-679L2D 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. Digital Models DEX-102 and DEX-202 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" section 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 "Simplex Configuration" section of the Central Switch manual for details. Refer to the "Protection against Feedback Configuration" section of the Central Switch manual for details. High speaker volume No speaker output No beacon contact Feedback f:\standard ioms - current release\42004 instr. manuals\42004-679l2d. doc 10/10 MODEL DEX-10X AND DEX-20X DRILLER'S INTERCOM STATIONS Pub. : 42004-679L2D Page 13 of 13 Specifications Power input (120 V ac) . . . . . . . 108/132 V ac range, 50/60 Hz Power consumed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]