RTS SSA-324 User manual

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

SSA-324 Specications
Two-Wire Input
Impedance: 5,000Ω +la%, -20% single ended, 10,000Ω
+100%, -20% differential
Operating Levels: -20 dBu to +0 dBu, nominal
Two-Wire Output
Impedance: 5,000Ω 20% single ended, 10.000Ω 20%
differential
Operating Level: 0.1 mA to 10 mA, nominal
Four-Wire Input
Impedance: 10,000Ω minimum single ended, 20,000Ω
minimum differential operating Levels: -10 dBu to +8
dBu, nominal
Four-Wire Output
Impedance: single ended or differential
Operating Levels: -10 dBu to + 8 dBu, nominal
Transfer Functions (Duck Level set to no ducking)
Voltage Gain, Four-Wire In to Two-Wire Out*
Level Pot 100% rotation: 3 dB
Level Pot 50% rotation: -15 dB 4 dB
Transfer Functions (Duck Level set to no ducking)
Voltage Gain, Two-Wire In to Four-Wire Out**
Level Pot 100% rotation: 22 dB 3 dB
Level Pot 50% rotation: 8 dB 4 dB
Frequency Response (Reference: 1 kHz, 0 dBu input)
Four-Wire Input to Two-Wire Output: 200 Hz to 5 kHz,
+1,-4 dB, typical
Two-Wire Input to Four Wire Output: 250 Hz to 5 kHz,
+1, -4 dB, typical
Signal-to-Noise Ratio (Reference: 1 kHz, 0 dBu at two-
wire)
Two-Wire to Four-Wire: -60 dB
Four-Wire to Two-Wire: -60 dB
Crosstalk (Reference: 1 kHz, 0 dBu)
System A to System B,
Two-wire to Two wire
200 Hz to 5 kHz: -50 dB,
Environmental
Temperature
Operating: 0.0 to 50” Celsius
Storage: -40” to 85” Celsius
Humidity: 0 to 95%. non-condensing
Mains Voltage
Standard: 120 volts 10%, 50-60 Hz
*P Option: 230 volts 10%, 50-60 Hz
#D Option: 100 volts + 10%. -5%, 50-60 Hz
Mains Amperes
Standard: 0.20A @ 120 volts 10%, 50-60 Hz
*P Option: 0.10A @ 230 volts 10%. 50-60 Hz
#D Option: 0.22A @ 100 volts +10%,.-5%. 50-60 Hz
Dimensions
1.72” ( 44mm) high, 8.19” (208mm) wide, 8.00”
(204mm) deep
Weight
SSA-324: 2.75 lbs (1.3 kg)
MCP-1: 1.0 lbs (0.45 kg)
MCP-2: 1.0 lbs (0.45 kg)
Finish
Thermoplastic front panel, aluminum case, light gray
nish.
Nulling:
Manual
Ordering Information
SSA-324
System-to-System Interface
Catalog Number: 9000697900
SSA-324#U
System-to-System Interface
Catalog Number: 9000697921
This specications information is preliminary and is subject to change without notication.
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: 800·955·6831
Form Number: LIT000031000
Date: April, 2006