RTS SSA-424A User manual
SSA-424A
Digital Interface/System-to-System Interface
The SSA-424A Dual Digital Hybrid interfaces two Two-Wire intercom lines to two Four-Wire lines. Unlike earlier analog hybrids,
the SSA-424A features advanced digital signal processing to achieve automatic nulling of the Two-Wire lines. Plus, each hybrid
features convenient peak-reading level meters to quickly match the levels between the lines that are being interfaced. The result
is easy and accurate setup. With the SSA-424A, all need for test tones, nulling adjustments and ducking adjustments have been
eliminated.
Compatible Two-Wire intercom systems include RTS TW, Audiocom, and Clear-Com. Compatible with Four-Wire intercom
systems. An internal call signal option board is also available for the SSA-424A. This option board provides call signal compat-
ibility with any of the two-wire systems listed above. The output can also be directly connected to an ADAM, ADAM-CS, Cronus,
or ZEUS GPI port. No external circuitry is required. With features like digital signal processing, peak-reading level meters and
optional call signal interfacing, the SSA-424A Dual Digital Hybrid assures ease of setup and maximum transparency between
intercom systems.
Two Independent Hybrids
Automatic Nulling
Peak Reading Level Meters
Direct ADAM/ZEUS Audio Connection
Transformer Isolated
Call Signal Option
Half-Rack Wide, 1 RU High
Universal Power Pack
Features
Line Drawing
SSA-424A Specications
2-Wire Ports
Input/Output Impedance: 5,000Ω, nominal
Operating Level: -10dBu to 0dBu, nominal
Level Adjustment Range: ±12dB
4-Wire Ports
Input Impedance: 10,000Ω, nominal
Output Impedance: 200Ω
Operating Level: -10dBu, 0dBu, +4dBu, +8dBu, +12dBu
System to System
Frequency Response: 200Hz to 5kHz, ±3dB
Signal-to-Noise Ratio (Ref 1kHz, 0dB @ 2-wire): -70dB nominal
Crosstalk: -80dB nominal
Environmental
Operating Temperature: -20°C to 50°C (-4°F to 122°F)
Storage Temperature: -40°C to 85°C (-40°F to 185°F)
Humidity: 0 to 95%, non-condensing
Power
100 to 250 VAC, 50/60 Hz, 18 Watts
Dimensions
1.72” (44mm) high, 8.19” (208mm) wide, 8.0” (204mm) deep
Weight
5.0 lbs. (2.3kg)
Finish
Thermoplastic front panel, aluminum case, light gray nish
Nulling:
Automatic
Ordering Information
SSA-424A
Digital Interface/System-to-System Adapter
Catalog Number: 90007824000
SSA-424A#U
Digital Interface/System-to-System Adapter
Catalog Number: 90007824001
This specications information is preliminary and is subject to change without notication.
Brand names mentioned are the property of their respective companies.
Contact Information
Telex Communications, Inc.
12000 Portland Avenue South
Burnsville, Minnesota 55337
Telephone: 877·863·4169
Fax: 800·323·0498
Form Number:
Date: March, 2006
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