User manual TELEX AUDIOCOM SSA-424A REV C

[. . . ] (Lincoln, NE) Telephone: 402-467-5321 Fax: 402-467-3279 Factory Service: 800-553-5992 Please include a note in the box which supplies the company name, address, phone number, a person to contact regarding the repair, the type and quantity of equipment, a description of the problem and the serial number(s). 1 1 1 1 1 Table of Contents CHAPTER 1 Description and Specifications . . . . . . . . . . . . . . . . . . . . 1 CHAPTER 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 General Description . . . . . . . . . . . 1 General Features . . . . . . . . . . . . . . . 1 Front and Back Panel Descriptions . . . . . . . . . . . . 2 Front Panel . . . . . . . . . . . . . . . . . . . . 2 Back Panel . . . . . . . . . . . . . . . . . . . . . 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 CHAPTER 2 Installation General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Operating Notes for ADAM, ADAM CS and Zeus Intercom Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 APPENDIX Internal Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Mode Dip Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Call Signal Option Card Installation . . . . . . . . 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4-Wire Audio Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ADAM, ADAM-CS, or Zeus Audio Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Audio Connections for the Other 4-wire Communications Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2-Wire Audio Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 RTS TW Audio Connections . . . . . . . . . . . . . . . . . . . . . . . . 6 Audiocom Audio Connection . . . . . . . . . . . . . . . . . . . . . . . 7 Clear-Com Audio Connection . . . . . . . . . . . . . . . . . . . . . 7 Other 2-wire Audio Connection . . . . . . . . . . . . . . . . . . . 7 4-Wire Call Signal Connections . . . . . . . . . . . . . . . . . . 8 Call Signal Connection for ADAM, ADAM CS, and Zeus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Call Signal Connections for other 4-wire Communications Systems . . . . . . . . . . . . . . . . . . . . . . . . . . 11 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1 2 CHAPTER 1 Description and Specifications General Description The SSA-424A Dual Digital Hybrid interfaces two, 2-wire intercom lines to two, 4-wire intercom lines. Unlike earlier analog hybrids, the SSA-424A features advanced digital signal processing to achieve automatic nulling of the 2-wire lines. Plus, each hybrid features convenient peak-reading level meters to quickly match the levels between the lines that are being interfaced. With the SSA-424A, all need for test tones, nulling adjustments and ducking adjustments have been eliminated. [. . . ] Connect a separate ClearCom party line to the J1B connector (System B). FIGURE 3. Using a TW-5W to connect to two TW channels to the SSA-424A Audiocom Audio Connection 1. NOTE: The SSA-424A features internal DC isolation. You can therefore connect the SSA-424A to powered Clear-Com cables, and it will not draw any power from the Clear-Com system. 2. You can directly connect standard Audio 1-channel cables. Connect one Audiocom channel to the J1A connector on the back of the SSA-424A (System A). If your Audiocom system uses 2-channel cables, use a JB-2 Junction Box to split the channels (Figure 4) On the SSA-424A front panel, set the System A and System B 2W CHAN SEL switches to position 2. NOTE: If the System A or System B hybrid will not be used, set the 2W CHAN SEL switch to the OFF position and attach a dummy load to the TW XLR connector. NOTE: The SSA-424A features internal DC isolation. You can therefore connect the SSA-424A to powered Audiocom cables, and it will not draw any power from the Audiocom system. 2. Other 2-wire Audio Connection 1. On the SSA-424A front panel, set the 2W CHAN SEL switches for System A or System B to the BAL position. 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. The pin configuration for the J1A and J1B connectors depend on whether you are connecting a balanced or unbalanced 2-wire line, as follows: NOTE: If System A or System B hybrid will not be used, set the 2W CHAN SEL switch to the OFF position and attach a dummy load to the TW XLR connector. LINE 1 J2A LINE 2 LINES 1&2 NOTE: If the System A or System B will not be used, set the 2W CHAN SEL switch to the OFF position and attach a dummy load to the TW XLR connector. JB-2 CH 1 SSA-424 AUX J5 POWER +5V 3A +15V 1. 6A -15V 0. 3A J4A +5V +15V RTN -15V RTN J3A 4 WIRE SYSTEM 7 Installation NOTE: TW systems must provide termination on the audio channel. Balanced Configuration Pin 1 Pin 2 Pin 3 No Connection Balanced Audio + Input/Output Balanced Audio - Input/Output If your intercom system is equipped with a UIO-256 (Universal Input/Output) Frame, you can also use that for connections (Table 2 on page 10 and Table 3 on page 10). As an alternative to using the GPI, you can use external components to send and receive call signals as described in "Call Signal Connections for other 4-wire Communications Systems" on page 11. IMPORTANT NOTE FOR AZEDIT USERS: AZedit version 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. To check the AZedit setting, select Intercom Configuration in the Options menu. Click on the Options tab, then verify that Configure onboard GPI outputs in FR9528 mode is selected. ** Termination 300 There are two possible configurations for unbalanced connection: Unbalanced Configuration 1 Pin 1 Pin 2 Pin 3 Audio Common Audio Input/Output No Connection ** Termination 200 Unbalanced Configuration 2 Pin 1 Pin 2 Pin 3 Audio Common No Connection Audio Input/Output ** Termination 200 2. On the SSA-424A front panel, set the CHAN SEL switches as follows: to the BAL position. · Balanced Configuration: set the CHAN SEL switches · Unbalanced Configuration 1: set the CHAN SEL switches to position 1. · Unbalanced Configuration 2: set the CHAN SEL switches to position 2. NOTE: If System A or System B will not be used, set the 2W CHAN SEL switch to the OFF position and attach a dummy load to the TW XLR connector. 4-Wire Call Signal Connections NOTE: These connections require the call signal option. Call Signal Connection for ADAM, ADAM CS, and Zeus You can use the General Purpose Interface (GPI) connector to interface call signals. The pin-out of the connector is the same for all of these intercom systems Table 1 on page 9. ADAM GPI Connector: XCP-ADAM-MC, J11 ADAM CS GPI Connector: J903 Zeus GPI Connector: J27 8 4-Wire Call Signal Connections FIGURE 5. This example uses GPI outputs #1 and #2 and GPI Input #1; however, you may use any other available GPI inputs and outputs. 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. You DO NOT have to use GPI outputs for call signalling or enable/inhibit, you can use simple switches instead, as shown in Figure 6 on page 11. Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Function GPI Input #1 High (5-18 VDC) GPI Input #2 High (5-18 VDC) GPI Input #3 High (5-18 VDC) GPI Input #4 High (5-18 VDC) GPI Input #5 High (5-18 VDC) GPI Input #6 High (5-18 VDC) GPI Input #7 High (5-18 VDC) GPI Input #8 High (5-18 VDC) Common* Common* Common* Common* Common* GPI Out #1 15 16 17 18 19 20 21 22 23 24 25 Function GPI Out #2 GPI Out #3 GPI Out #4 GPI Out #5 GPI Out #6 GPI Out #7 GPI Out #8 Common* Common* Common* Common* *Use any available common pin with any GPI Input or Output. TABLE 1. [. . . ] For option card installation, slide the circuit board out toward the back to remove it from the bottom cover. TABLE 1. Mode AUX Telex Communications, Inc. , Made in U. S. A. DIP Switch Settings Description AUX J5 POWER +5V 3A +15V 1. 6A -15V 0. 3A Switch Settings RTN J4B J4A +5V +15V J3B J2B 4 WIRE SYSTEM J1B J1A 2 WIRE SYSTEM -15V RTN J2A J3A 4 WIRE SYSTEM 1 Open 2 Open 3 Open 4 Open Configuration 1, Full-Duplex Mode (Default) Configuration 2, Half-Duplex Mode Tone Test Mode FIGURE 1. Location of screws for disassembly. Closed Open Open Open Open Open Open Closed Full-Duplex Definition: Both sides of the line can talk simultaneously. Half-Duplex Definition: Only one side of the line can talk at a time and the other side must wait until the first side is done talking before responding. [. . . ]