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User Instructions
SSA-424A Dual Digital Hybrid
ADAM, ADAM CS, and Zeus Intercoms
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Related Manuals for RTS SSA-424A
Summary of Contents for RTS SSA-424A
- Page 1 User Instructions SSA-424A Dual Digital Hybrid ADAM, ADAM CS, and Zeus Intercoms - 1 5 - 1 2 - 1 0 d B 0 d B 9350-7824-000 Rev C 10/2008 - 1 5 - 1 2 - 1 0 d B 0 d B...
- Page 2 Telex Communications, Inc. 8601 East Cornhusker Hwy. Lincoln, NE 68507 U.S.A. Attn.: Service This package should include the following: Description Final Assy, SSA-424A Final Assy, SSA-424A with option board Power Supply Cord, Power User Manual Statement of Conformity Warranty Statement Part No.
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Page 3: Table Of Contents
Call Signal Connection for ADAM, ADAM CS, and Zeus ...8 Call Signal Connections for other 4-wire Communications Systems 2-Wire Call Signal ...12 Call Signal Connections for Audiocom, RTS TW and Clear-Com ...12 Call Signal Connections for Other 2-Wire Communication Systems Table... -
Page 5: Description And Specifications
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 2-wire intercom systems include RTS™ TW, ®... -
Page 6: Front And Back Panel Descriptions
There is a power ON/OFF and call indicator at the left of the front panel. This indicator lights continuously when the SSA-424A is turned ON and flashes when an incoming call signal is detected, if the call signal option board is installed.. -
Page 7: Specifications
Specifications Specifications 2-Wire Ports Input / Output Impedance 5,000 ohms, nominal Operating Level Audiocom: 1 V , nominal RTSTW/ClearCom: 775 mV , nominal 4-Wire Ports Input Impedance 10k ohms, nominal Output Impedance 200 ohms Operating Levels -10 dBu, 0 dBu, +4 dBu, +8 dBu, +12 dBu System to System Frequency Response 200 Hz to 3.5 kHz, ±4 dB... - Page 8 Description and Specifications...
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Page 9: Installation
Mounting Place the SSA-424A on a desktop, or install it in an equipment rack using an RTS MCP Rack Mount Kit. Several rack mount options are available. There are no special ventilation requirements for the SSA-424A, but allow for ventilation around the power pack. -
Page 10: 2-Wire Audio Connections
Pin 5 Balanced Audio - 4-wire input Pin 6 No Connection On the SSA-424A front panel, set the 4W LEVEL REF SEL switches to the position which most closely matches FIGURE 2. Rack Mount Configurations 2-Wire Audio Connections RTS TW Audio Connections Use standard TW intercom cables. -
Page 11: Audiocom Audio Connection
TW XLR connector. Other 2-wire Audio Connection Use the J1A connector on the back of the SSA-424A to connect one 2-wire line to the System A hybrid. Use the J1B connector to connect a second 2-wire line to the System B hybrid. -
Page 12: 4-Wire Call Signal Connections
1.06 or higher includes a feature which allows you to invert the action of the GPI outputs. By default, these output are set to duplicate the action of the RTS FR9528 Relay Frame accessory. This is the correct setting for use with the SSA-424A. - Page 13 #1; however, you may use any other available GPI inputs and outputs. The Call Enable/Inhibit connection is optional. It gives you the ability to disable call signalling using a GPI output. However, when connecting to a Clear-Com intercom system, if an enable/inhibit switch is not connected, a jumper must be installed for any other application.
- Page 14 Installation UIO-256 GPI Input Connector (J7) TABLE 2. GPI INPUT NUMBERS UIO-256 Frame #1 UIO-256 Frame #2 a. Dependent on UIO-256 DIP Switch SW1 Settings for Input/Output Range as summarized in the UIO-256 Manual. UIO-256 GPI Outputs Connector (J5) TABLE 3. GPI OUTPUT NUMBERS UIO-256 UIO-256...
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Page 15: Call Signal Connections For Other 4-Wire Communications Systems
FIGURE 6. Typical call send and call enable/inhibit connections for a 4-wire intercom system. 4-wire Call Receive The SSA-424A receives call signals from the 2-wire system, then converts this to relay contact closure for use as a 4-wire call receive indication. The SSA-424A also provides +5 VDC which can be connected to the relay contacts to generate a DC output signal instead of a contact closure. -
Page 16: 2-Wire Call Signal
Balanced 20 kHz + Input/Output Pin 3 Balanced 20 kHz - Input/Output SSA-424A Signal Specifications for balanced configuration: SSA-424A Receive: 20 kHz ±100 Hz, 100 mV SSA-424A Send: 20 kHz ±800 Hz, 500 mV Unbalanced Configuration 1 Pin 1 20 kHz Common... -
Page 17: Operation
Another solution is to assign a dedicated key as a UPL resource key (which you could name CALL). Then for each key that talks to an SSA-424A hybrid, create a UPL statement that will activate the appropriate GPI whenever the call key and the talk key are pressed. This lets you use the same call key with more than one GPI. - Page 18 Output for use as a call enable control, you can assign that GPI output to any intercom key in the 4-wire intercom system. If System A is connected to an Audiocom or TW intercom system, pressing the key will disable the call signaling. (However, the effect is opposite if a Clear-Com system is connected: pressing the key will disable the signaling.)
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Page 19: Internal Access
Internal Access Remove six screws from the back cover. Remove the top cover. This provides access to all internal adjustments. For option card installation, slide the circuit board out toward the back to remove it from the bottom cover. Telex Communications, Inc., Made in U.S.A. 2 WIRE SYSTEM 4 WIRE SYSTEM FIGURE 1. -
Page 20: Call Signal Option Card Installation
Assemble the standoffs to the circuit board using the supplied screws and lock-washers. Connect the supplied power cable from J8 on the option card to J303 on the main board of the SSA-424A. Insert the connectors on the option card into the connectors on the main board.