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Connecting Alarm Cards
BBV Starcard - daisy chain telemetry
A BBV Starcard will normally be required in a system where telemetry is employed. Usually it will not be feasible to wire the
telemetry in a daisy chain fashion, see examples below:
Figure 3. Direct Daisy chain telemetry wiring example
As can be seen from Figure 3, direct daisy chained telemetry is not a practical solution. The cable lengths can rapidly become
excessive (maximum allowable cable length = 1200m) and the labour cost to implement this option will be significant. A much
better solution is shown in figure 4 below which shows the same system wired utilising a star card.
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Alarm Card
Alarm Card
Alarm Card
RJ45 Telemetry Connections
(Blue Pair)
Keypad connection
12V 1A
12V 1A
12V 1A
Tx+ Blue
Tx- Blue & White
Keypad 1
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