BBV FBM - Connecting Alarm Cards; BBV Starcard

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RJ45 Telemetry Connections

(Blue Pair)

Tx+ Blue

Tx- Blue & White

Connecting Alarm Cards

Alarm Card

12V 1A

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 signicant. A much

better solution is shown in gure 4 below which shows the same system wired utilising a star card.

Keypad 1

Keypad connection

BBV FBM - Connecting Alarm Cards; BBV Starcard - Daisy Chain Telemetry