System-to-System Interface Specification Sheet

SSA-324

System-to-System Interface

The Model SSA-324 is a System to System Adapter (or interface). It interconnects the voice signals between different intercom

systems. In addition, it can optionally interconnect “Calls” or tally signals between systems. Each SSA-324 includes two two-

wire to four-wire converters. The four-wire interface can deliver and accept high level signals. An SSA-324 can also function as

a two-wire to two-wire interface by interconnecting the two individual interfaces at the four-wire level. The SSA-324 does two

voice channels when used as a dual two-wire to four-wire interface, and one voice channel when functioning as a two-wire to

two-wire interface.

Functional Specications

Ducking (Bilateral)

Monitoring

Nulling

Level Adjustments

Features

Line Drawing

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SSA-324 System-to-System Interface The Model SSA-324 is a System to System Adapter (or interface). It interconnects the voice signals between different intercom systems. In addition, it can optionally interconnect “Calls” or tally signals between systems. Each SSA-324 includes two twowire to four-wire converters. The four-wire interface can deliver and accept high level signals.
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SSA-324 Specifications Two-Wire Input Impedance: 5,000Ω +la%, -20% single ended, 10,000Ω +100%, -20% differential Environmental Temperature Operating Levels: -20 dBu to +0 dBu, nominal Storage: -40” to 85” Celsius Two-Wire Output Impedance: 5,000Ω 20% single ended, 10.000Ω 20% differential Operating Level: 0.