GAI-Tronics 709-901 User Manual - Page 5

Browse online or download pdf User Manual for Amplifier GAI-Tronics 709-901. GAI-Tronics 709-901 16 pages. Smartseries handset/speaker amplifier

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709-901 S

ODEL

MART

ERIES

Block Diagram

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

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

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 Handset

RLY

Amp/FSK/P PCBA. Connector J2 of the Speaker Amp/Power Supply PCBA connects to optional

external devices.

The Handset Amp/FSK/P PCBA has connections to the handset, hookswitch, and push-to-page operator

on the front of the hazardous enclosure. The PCBA's terminal connectors E1 to E7 connect to the 2-point

and 6-point connectors in the bottom of the amplifier enclosure.

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 Remote Terminal Unit (RTU) installed in specially designed enclosures.

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ANDSET

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MPLIFIER

Figure 3. Block Diagram

. 42004-699L2D

lines and ac power. The Speaker

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