Cooper Security 9853 Guide d'installation Page 28

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3. Installation
Momentary or Continuous Keyswitches
The 9928 can be connected to either momentary or continuous keyswitches,
see Figure 18. 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 9851 has an internal communicator. If necessary the control unit can
also be fitted with either a communicator plugged on to the main PCB, or
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 communicator.
Internal Communicator
The internal communicator is a 2400 Baud Auto Dialling Modem. The com-
municator 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 internal 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 internal 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 9851 also provides a Three Way Calling facility to make sure the internal
communicator can always use a shared telephone line.
To use this facility, the local exchange must provide the Three Way Calling
service on the customer's line.
Line Monitoring
The 9851 provides a Line Monitor function programmed by command 106 to
ensure that the telephone line is connected and working, and to indicate a
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