Bedienungsanleitung Satel CA-10 (Seite 33 von 43) (Englisch)

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CA-10 Installer Manual 31

Connection with the station is established in the following way:

• the station answers the call and sends the, so-called, handshake signal (one or a few in

sequence if the station supports several transmission formats),

• the control panel recognizes the station handshake signal and if it matches the

programmed transmission format, the control panel answers by sending identifier and

event code in appropriate tones (once or twice, depending on the selected format) – in the

headset connected to the line monitoring jack, these sounds are much louder than the

monitoring station signals,

• if the station receives information, it will acknowledge it with the same signal as the

handshake,

• the panel disconnects or sends next codes if there still are some other events to be

reported to the station.

The most common monitoring problems result from inaccurate information on the

transmission formats supported by the given station (e.g., ambiguous names of the formats),

errors in the data entered into the control panel, as well as poor quality of the telephone

connections. Often only by “monitoring” the course of communication you are able to find the

cause of a problem.

Note: Some stations do not acknowledge reception of the event code if it has another format

(e.g., 4/1 instead of the required 4/2). If this is the case, the control panel will repeat its

attempts to establish communication, while telephones in the facility will be

disconnected – the costs of such connections may be very high. For this reason, it is

recommended that all the programmed codes be very carefully checked. It is possible

to activate the options 7 and 8 in FS-47, which makes the panel omit the codes

unacknowledged in 16 consecutive retries. Problems of this type do not occur in

professional, multi-format monitoring stations (including the Satel STAM-1).

Downloading – telephone communication with the computer

Telephone communication with the computer requires a modem. The modem must meet two

essential conditions:

1. enable operation in the transmission format UTI V.21 (CCITT V.21) or BELL 103

(operation at a rate of 300Bps on telephone line),

2. permit operation to be configured only in one of these formats (the function of automatic

format negotiating disabled).

Before starting the first connection between the computer and the control panel, appropriate

settings must be entered in the DLOAD10 program (CONFIGURATION window). Information

on the modem configuration is contained in the DLOAD10 program „HELP” file (function

activated with F1 key), topic: “COMMUNICATION” and in chapter “Program configuration for

communication with the panel” of this manual. In the case of non-standard modems, you

must refer to the modem manual for the information on configuration procedures.

Modem initialization

The program initializes the modem after the „MODEM” item is selected from the

„COMMUNICATION” menu. In case of any trouble, the program will display one of the two

messages:

• MODEM NOT RESPONDING – which means a technical problem with communication

with the modem, e.g. an incorrect COM port number, conflict with the Windows system

drivers;

• BAD COMMAND – wrong command initializing the modem.

Correct initialization of the modem does not mean it is properly configured to work with the

control panel. The first initializing commands, as suggested in the program, are sufficient

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Satel CA-10 Seite 33

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