Dukane 9A680A Wall Plate & Hookswitch 电路图.pdf

DUKANE MODEL 9A680A WALL PLATE used in conjunction with a room speaker or some suitable annunciator, the 9A680A with either a dynamic or carbon type handset becomes a remote answering station with the same privacy of any telephone. Handset connections are made at terminal strip located behind the front plate; the wall plate is designed to fit a stan- dard 4-gang electrical back box. The overall dimensions of the wall plate are 4-l/2 inches wide by 8-3/16 inches high and the hookswitch assembly requires l-3/4 inches minimum depth behind the wall plate. POWER REQUIREMENTS The 9A680A Wall Plate and Hookswitch requires a dynamic or carbon type handset and a suit- able external source of handset power (24 volts DC) and incoming annunciator control and i ntercommI i nes . PREPARATION FOR USE Wire nuts may be used to make wiring connections. See schematic diagram for external wiring connections. With the handset off the hanger, the hookswitch may be regarded as two form “B” switches with two form “C” switches; i .e., the two form “B” switches are closed when the hand- set is off of the hanger, and these switches are open when the handset is placed in the hanger. It is possible to rewire the hookswitch assembly for four form “C” switches for any special appli- cation; the switch blades are included although not wired to terminals as a 9A680A. 400- 1171 -A RadioFans.CN 收音机爱 好者资料库 ALL DYNAMIC HANDSETS (DuKane Model 257-33, or equivalent) NOTE When dynamic handset is used with the 9A680A Wall Plate and Hookswitch, please remove the 0.5 mfd capacitor connected between terminals C and D. Connect the receiver wires to terminals A and B. Connect transmitter mtcrophone wires to terminals D and E. Be sure and connect any shields together; connect shields to “ground” at console or control station power supply only. For the 257-33 dynamic handset, observe the following color code: for the received-use the green wire and the red wire, and for the transmitter-use the black wire and the white wire. ALL CARBON TYPE HANDSETS (DuKane Model 257-42, or equivalent) Connect the receiver wires to terminals A and D. Connect transmitter microphone wires to terminals A and E. For the 257-42 carbon type handset, observe the following color code: for the receiver-use the green wire and the yellow wire, and for the transmitter-use the brown wire and the white wire. ROOM STATION HANDSET CONNECTIONS - DYNAMIC HANDSET HOOKSWITCH .-.-(- NOTE: TIE ALL SHIELDS TOGETHER. DYNAMIC ROOM STATION HANDSET CONNECTIONS-CARBON HANDSET-3 WIRE SYSTEM BUZZER COMMON BUZZER AND STATION LINE CARBON HANDSET 257 -42 OR EOUIV. I I 9A68OA RadioFans.CN 收音机爱 好者资料库