ADEMCO VISTA-20HWse Guia de Resolução de Problemas descarregar pdf (Página 63)

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Section 20. SYSTEM COMMUNICATION

This section provides an explanation of formats this system accommodates for reporting alarms

and other system conditions to the central station. The process of a successful transmission

consists of both the method of communication between the control panel and the central station

receiver and the actual way the information is sent and displayed at the central station.

Report Code Formats

When the panel calls the central station receiver, it waits to hear a “handshake”

frequency from the receiver to confirm that the receiver is on-line and ready to

receive its message. Once the panel hears the handshake it is programmed to

listen for, it sends its message. The panel then waits for a “kissoff” frequency

from the receiver acknowledging that the message was received and understood.

If the handshake frequency is not given or is not understood by the panel, the

panel will not send its message. Once the handshake frequency is received and

understood by the panel, the panel will send its message. If there is an error in

the transmission (the receiver does not receive a “valid” message), the kissoff

frequency will not be given by the central station receiver.

The panel will make a total of eight attempts to the primary telephone number

and eight attempts to the secondary telephone number (if programmed) to get a

valid message through. If the panel is not successful after its numerous

attempts, the keypad will display “Communication Failure” (Alpha keypad) or

“FC” (Fixed-word keypad).

The following chart defines the three sets of (handshake/kissoff) frequencies that

the panel supports and the different formats that can be sent for each.

FORMAT HANDSHAKE TRANSMITS DATA KISSOFF TRANSMIT TIME

Low Speed 1400Hz 1900Hz (10PPS) 1400Hz Under 15 secs.

3+1 (Standard report)

4+1

4+2

Sescoa/Rad 2300Hz 1900Hz (20PPS) 2300Hz Under 10 secs.

3+1 (Standard report)

4+1

4+2

Express 1400–2300Hz DTMF (10 cps) 1400Hz Under 3 secs.

4+2

Contact ID 1400–2300Hz DTMF (10 cps) 1400Hz Under 3 secs.

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 83 84

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ADEMCO VISTA-20HWse Guia de Resolução de Problemas Página 63