GAI-Tronics 370-201, 372A Interface Amplifier Assembly User Manual
Page 7
Pub. 42004-019D
Model 370-201 Interface Amplifier Assembly
Page: 7 of 9
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One-Way Operation
If the Model 370-201 Interface is only used for one-way communication, jumper wires located on the
Model 370-201 two-way amplifier printed circuit card (69056-001) can be removed to improve amplifier
stability and performance.
If the Model 370-201 is used for one-way communications ONLY, complete the following adjustments:
1. The telephone line/PBX paging port, cut Jumper W-4.
2. The GTC system page line to telephone/PBX Line or Central Amplifier, cut Jumper W-3.
When the Model 370-201 is operated in a one-way mode, the BALANCE control will have no effect on
operation. When W-4 is cut, only the LINE
TO
GTC control will be functional. The GTC
TO
LINE
potentiometer will be active if W-3 is cut.
One-Way Paging from a Page/Party
®
System to Another Paging System
Model 370-201 may be used to connect the page line of a Page/Party
®
system into another page system
(similar to a central amplifier system). Figure 7 illustrates the flow of communication from a GAI-Tronics
Page/Party
®
page line to a central amplified system page line. See the One-way Operation section.
Figure 7.