Bosch LBB 1925 Instructions d'exploitation télécharger pdf (Page 20)

Bosch Security Systems | 2003-09 | 3922 988 99483en

Plena System Pre-amplifier | Installation and Operating Manual | en | 20

6.1 Controls & Connections (top)

Figure 6.3

1 Microphone

2 Zone selection keys with indication LED

3 All zone selection key with indication LED

4 Press to talk key with indication LED

5 Labels for zone indication.

The call stations LBB 1941 and LBB 1946 can be connected in a loop-through arrangement to the LBB 1925. Each

input of the LBB 1925 can have up to 4 call stations. The call station cable may be extended up to 500 m from the

LBB 1925, using shielded CAT-5 quality cable (four twisted pairs with one overall shield) and 8-pin DIN

connectors. One twisted pair for power supply connection (DIN pin 4: 24Vdc, pin 2: ground), one twisted pair for

data communication (DIN pin 6: data -, pin 7: data +), one twisted pair for audio (DIN pin 1 and pin 3) and one

twisted pair for all-call select (DIN pin 5) and connection to chassis ground (DIN pin 8).

Note

An editable label template (MS Word) can be downloaded from

www.boschsecuritysystems.com / www.philipscsi.com.

1 3 42

1 4

About the call stations

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 29 30

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Bosch LBB 1925 Instructions d'exploitation Page 20