Cooper Security 9751 Guide d'installation Page 29

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3. Installation
Wiring Keyswitches
Figure 16 shows the connections for a 9928 Keyswitch Interface.
Note: You can fit only one keyswitch interface per system.
Momentary or Continuous Keyswitches
The 9928 keyswitch interface can be connected to either momentary or
continuous keyswitches, see Figure 16. When using a momentary keyswitch
remove the jumper from link M/C. When using continuous keyswitches fit a
jumper to link M/C.
Using a Communicator
The 9751 and 9752 control units contain an internal communicator on the
main PCB. In addition the control unit can be connected to a separate
communication device using a wiring harness connecting to interface pins on
the main PCB. Use programming commands 101 to 158 to set up the com-
municator.
Internal Communicator
The internal communicator is a 300 Baud Auto Dialling Modem. The commu-
nicator can be used for:
Transmitting alarm signals to alarm receiving equipment at a central
monitoring station using either Scancom Fast Format, Scancom SIA
(Security Industry Association), or Contact ID.
Connecting to a PC based at a remote engineering centre. By using
Scantronic <Downloader> software, the remote PC can up- or download
system parameters (including the event log and diagnostics), set and
unset the alarm system, and carry out other special functions.
Telephone Line
The built in communicator can be connected directly to an ex-directory line
used exclusively for alarm communications.
Where an exclusive line is not available and other apparatus is connected to
the line, for example an answer machine, the built in communicator provides
a series connection with line divert for the other apparatus. When triggered,
the communicator seizes the line and disconnects the other apparatus while
the communicator is operational. When the communicator has shut down, it
reconnects the other apparatus.
Note: Ideally, no other equipment should be connected to an exclusive line.
Three Way Calling
The 9751 and 9752 also provide a Three Way Calling facility to make sure
the built in communicator can always use a shared telephone line.
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