5 wire audio door phone system with a new video door phone system without any change in the wiring. As for all ACET systems the quality of the speech and of the image is of the highest standard.
MONITOR Fix the mounting plate on the wall with 2 screws and slide the monitor paying attention to the correct centering on the 4 holders. (figure 2) FIXING BACKET, PASSING CABLE AND WIRING TERMINAL BOARD OPENING MONITOR AND UNHOOKING HANDSET HOOKING MONITOR AND INSERTING T.B.
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OPERATIONS CALL AND ANSWER: Push the button on the panel. The monitor will ring and light up the picture. Pick up the telephone and talk. Push the button with the key to open the door. Replace the telephone on the monitor. After 5 seconds the system is ready for a new call. (figure 4) CALL TURN ON MONITOR...
ADJUSTMENT OF CALL VOLUME AND CONTRAST OF MONITOR 22701. On the bottom of the monitor are placed two potentiometers to adjust the volume of the call (left) and contrast (right). ADJUSTMENT RING TONE AND PICTURE CONTRAST APPENDIX 1: TABLE SHOWING SIZE OF CABLES FOR LENGTH OF RUN. Between power supply 21809 or 21810 and speaker amplifier 2272X: Length of cable (mtrs) Wire section (mmq.)
APPENDIX 2: INFORMATIONS RELATED TO THE CONNECTORS AND THEIR VOLTAGE VALUE MONITOR 22701B AND 22701COLB terminal function DC positive power Call and speach signal GND for video, conversation and power Video signal Output for picture recall DC negative power (parallel to Pin 3) Monitor 22701B Monitor 22701COLB terminal...
21809 and the 2272X. 3) Verify, with a loudspeaker 45 ohm of impedence or with a dual tone ACET telephone, the presence of the call between 3 (t.p. 5 of the telephone) and 8 (t.p. 6 of the telephone) of the 2272X speaker amplifier. In absence of call signal, repair or change the 2272X.
F) In a multistorey system, some monitors work properly, other monitors do not. 1) If the monitor doesnʼ t light up: - verify the proper connection and polarity in the monitor . 2) If the monitor switches on, but only with a screen without picture: - Verify the values on the monitorʼ...