Block Diagram - GAI-Tronics 701-902 SmartSeries User Manual

Pub. 42004-658L2G
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701-902 S S H /S A P
MART ERIES ANDSET PEAKER MPLIFIER AGE

Block Diagram

The P1 connector on the back of the Speaker Amp/Power Supply PCBA plugs into a socket in an
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enclosure connected to the system cable, accessing the Page/Party lines and ac power. 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
V 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 and the hookswitch via spade terminal
connectors E1 to E7.
Figure 3. Block Diagram
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