GAI-Tronics 751-905 Smart SERIES Handmatig - Pagina 5

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Pub. 42004-686L2D

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751-905 SmartSeries

Speaker Amplifier

AGE

Block Diagram

The P1 connector on the rear of the Speaker Amp/Power Supply PCBA plugs into the socket in an

enclosure connected to the system cable, accessing the Page/Party

lines and ac power. Refer to Figure 3.

The Speaker Amp/Power Supply PCBA contains the low voltage power supplies and the speaker

amplifier circuitry.

Connector J1A and J1B on the Speaker Amp/Power Supply connects regulated +5 V dc, +/−15 V dc, and

voltages along with control, monitoring, and line signals to the J1A and J1B on the FSK/P PCBA.

RLY

Connector J2 of the Speaker Amp/Power Supply PCBA connects to optional external devices.

Figure 3. Block Diagram

The assembly interfaces to the system cable, an external loud speaker, and auxiliary devices via P1, a

16-pin connector. All connections to the system cable are made by qualified installation technicians

during the system installation. Direct questions about these connections to the GAI-Tronics Field Service

Department at 800-492-1212 inside the USA or 610-777-1374 outside the USA. Other connections on

the Speaker Amp/Power Supply PCBA provide quick connect/disconnect of subassemblies.

Connector J2 on the bottom of the Speaker Amp/Power Supply PCBA connects to optional devices such

as the SmartSeries

RTU installed in specially designed enclosures.

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