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TM TM
LEVEL SYSTEM A LEVEL
SYSTEM B
SET
SET
TO TO
4W
4W
-15 -12 -9 -6 -3 0 +3 +6 +9 +12 -6 -3 0 +12
-15 -12 -9 +3 +6 +9
TO
TO
2W
2W
0dB 2
TW CHAN SEL 0dB 2 TW CHAN SEL
-10dB +4dB -10dB +4dB
1 BAL
1 BAL
+12dB +8dB +12dB +8dB
12 BAL
12 BAL
4W LEVEL 4W LEVEL
POWER
REF SEL REF SEL SSA-424
User Instructions
SSA-424
Dual Digital Hybrid
ADAM™, ADAM CS™, Zeus™ Intercom Systems
9350-7638-000 Rev C 10/04
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RETURN SHIPPING INSTRUCTIONS PROPRIETARY NOTICE Procedure for Returns The RTS production information and design dis- If a repair is necessary, contact the dealer where this closed herein were originated by and are the prop- unit was purchased. erty of Telex Communications, Inc. Telex reserves all patent, proprietary design, manufacturing, reproduc- If repair through the dealer is not possible, obtain a tion, use and sales rights thereto, and to any article Return Authorization from: disclosed t
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Contents 1 Description and Specifications ........................................................................................................5 1.1 GENERAL DESCRIPTION ..................................................................................................................5 1.2 GENERAL FEATURES .......................................................................................................................5 1.3 FRONT AND BACK PANEL DESCRIPTIONS ............................
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4 SSA-424 USER MANUAL
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Peak Reading Level Meters: Quick and accurate 1 Description and visual audio level adjustment. No extra setup equip- Specifications ment or guesswork is required. 1.1 GENERAL DESCRIPTION The SSA-424 Dual Digital Hybrid intervaces two, 2- Direct ADAM/Zeus Audio Connection: Accepts wire intercom lines to two, 4-wire intercom lines. standard ADAM/Zeus DB9 or RJ11 keypanel cables. Unlike earlier analog hybrids, the SSA-424 features advanced digital signal processing to achieve Transformer Isolate
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1.3 FRONT AND BACK PANEL DESCRIPTIONS 1.4 SPECIFICATIONS 1.3.1 FRONT PANEL 2-Wire Ports There is a power ON/OFF and call indicator at the left Input/Output Impedance: 5,000 ohms, nominal of the front panel. This indicator lights continuously Operating Level: -10dBu to 0 dBu, nominal when the SSA-424 is turned on and flashes when an Level Adjustment Range: ±12dB incoming call signal is detected. The remainder of the front panel is divided into controls and indicators 4-Wire Ports for the two s
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2.3.2 AUDIO CONNECTIONS FOR OTHER 4-WIRE 2 Installation COMMUNICATIONS SYSTEMS 2.1 UNPACKING AND INSPECTING 1 Construct 9-pin or RJ11 cables to connect from Immediately upon receipt of the equipment, carefully you 4-wire system to the SSA-424. To connect to inspect the shipping container and the contents for the System A hybrid, use either J2A or J3A; for any discrepancies or damage. Should there be any, the System B hybrid, use either J2Bor J3B. Pin notify the freight company and the dealer
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Side-By-Side Rack Mount Configuration Using an MCP1 Rack Mount Kit Single-unit Rack Mount Configuration Using an MCP2 Rack Mount Kit Console Mount Configuration Using an MCP3 Console Mount Kit Tandem Configuration Using an MCP4 Tandem Mount Kit Figure 2. Rack mount configurations 8 SSA-424 USER MANUAL
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2.4.2 AUDIOCOM AUDIO CONNECTION 2.4 2-WIRE AUDIO CONNECTIONS 1 You can directly connect standard Audiocom 1- 2.4.1 RTS TW AUDIO CONNECTIONS channel cables. Connect one Audiocom channel 1 Use standard TW intercom cables. Note, stan- to the J1A connector on the back of the SSA-424 dard TW system cables can carry either one or (System A). Connect a second Audiocom two channels, while each hybrid in the SSA-424 channelto the J1B connector (System B). If your can only interface one TW channel to
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2.4.3 CLEAR-COM AUDIO CONNECTION 2.4.4 OTHER 2-WIRE AUDIO CONNECTION 1 Use standard Clear-Com 3-pin cables. Connect 1 Use the J1A connector on the back of the SSA- one Clear-Com party line to the J1A connector 424 to connect one 2-wire line to the System A on the back of the SSA-424 (System A). Con- hybrid. Use the J1B connector to connect a nect a separate Clear-Com party line to the J1B second 2-wire line to the System B hybrid. The connector (System B). pin configuration for the J1A and J
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Table 1. GPI Connector Pin-out 2.5 4-WIRE CALL SIGNAL CONNECTIONS (ADAM, ADAM CS, and Zeus) ✏ These connections require the call signal option. P. P PP.Pn iiiiin n n n n N N N N No o o o o... Fn F F FFn u u u u un n n n nc c c c ctttttiiiiio o o o on n 2.5.1 CALL SIGNAL CONNECTIONS FOR ADAM, ADAM CS, AND ZEUS 1) GPI Input #1 High (5-18 VDC You can use the General Purpose Interface (GPI) 2) GPI Input #2 High (5-18 VDC connector to interface call signals. The pin-out of the 3) GPI Input #3 High
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Table 2. UIO-256 GOI Inputs Connector (J7) G* G GG*Gs P P P P PIIIII IIIIIn n n n np p p p pu u u u uttttt N N N N Nu u u u um m m m mb b b b be e e e er r r r rs s s s s* * * G GGs Gs GP P P P PIIIII IIIIIn n n n np p p p pu u u u uttttt P P P P Piiiiin n n n n N N N N Nu u u u um m m m mb b b b be e e e er r r r rs s UU6 UU6 IIIIO O O O- - - -2 2 2 25 5 5 56 6 UU6 U6 UIIIIO O O O- - - -2 2 2 25 5 5 56 6 UU6 U6 UIIIIO O O O- - - -2 2 2 25 5 5 56 6 UU6 U6 UIIIIO O O O- - - -2 2 2 25 5 5 56 6 It
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2.5.2 CALL SIGNAL CONNECTIONS FOR OTHER 4- 2.5.2.2 4-WIRE CALL RECEIVE WIRE COMMUNICATON SYSTEMS The SSA-424 receives call signals from the 2-wire 2.5.2.1 4-WIRE CALL SEND AND CALL ENABLE/INHIBIT system, then converts this to relay contact closure for The SSA-424 accepts a switch-contact input from the use as a 4-wire call receive indication. The SSA-424 4-wire system and then generates a call signal output also provides +5 VDC which can be connected to the to the 2-wire system. The SSA-424 al
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2.6 2-WIRE CALL SIGNAL 2.6.1 CALL SIGNAL CONNECTIONS FOR AUDIOCOM, RTS TW AND CLEAR-COM The call signals are superimposed on the audio signal, so no separate call signal connections are required. However, make sure that a call enable switch or jumper is installed for Clear-Com applica- tions as shown in Figures 5 and 6. 2.6.2 CALL SIGNAL CONNECTIONS FOR OTHER 2- WIRE COMMUNICATION SYSTEM Any other 2-wire device must be able to generate and receive a 20kHz signal superimposed on the audio as fol
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Another solution is to assign a dedicated key as 3 Operation a UPL resource key (which you could name 3.1 GENERAL INSTRUCTIONS CALL). Then for each key that talks to an SSA- 1 Attach the power pack to the SSA-424, and apply 424 hybrid, create a UPL statement that will power to all components. Confirm that the power activate (assert) the appropriate GPI whenever indicator is lit on the SSA-424 front panel. the call key AND the talk key are pressed. This lets you use the same call key with more
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Table 4. Mode DIP Switch Settings 4 Appendix Ss S S SSs w w w w wiiiiitttttc c c c ch h h h h S S S S Se e e e ettttttttttiiiiin n n n ng g g g gs s s 4.1 INTERNAL ACCESS Dn D D DDn e e e e es s s s sc c c c cr r r r riiiiip p p p ptttttiiiiio o o o on n n 1 1 112 1 2 2 223 3 3 334 4 4 4 4 1 Remove six screws from the back cover. Configuration 1, Half/Full Duplex Mode (default): Automatically switches between modes. 2 Remove the top cover. Of ff Of f Of f Of Useful in situations where there is h
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6 Set the 2W CHAN SEL switches to either OFF 4.4 CALL SIGNAL OPTION CARD INSTALLATION position. Use these instructions to install a Call Signal Option 7 Input a 1kHz, -10dBu test signal at the 4-wire Card in an SSA-424 that was originally ordered audio input. Use either connector: without it. 9-Pin Connector 1 Disassemble the SSA-424 as previously de- Pin 7:Balanced Audio - input scribed. Pin 8:Balanced Audio + input 2 Assemble the standoffs to the circuit board using RJ11 Connector the supplie
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