RTS SSA-424 User Manual
User Instructions
TM
SSA-424
Dual Digital Hybrid
ADAM™, ADAM CS™, Zeus™ Intercom Systems
LEVEL
POWER
SET
-15 -12 -9
-10dB
+12dB
4W LEVEL
REF SEL
SYSTEM A
-6 0
0dB
+3 +6 +9
+4dB
+8dB
2
1
TO
4W
+12-3
BAL
TW CHAN SEL
TO
LEVEL
12
2W
BAL
SET
-15 -12 -9
-10dB
+12dB
4W LEVEL
REF SEL
SYSTEM B
-6 0
0dB
+3 +6 +9
+4dB
+8dB
2
1
TO
4W
+12-3
BAL
TW CHAN SEL
TO
2W
12
BAL
TM
SSA-424
9350-7638-000 Rev C 10/04
PROPRIETARY NOTICE
The RTS production information and design disclosed herein were originated by and are the property of Tele x Communications, Inc. T ele x reserves all
patent, proprietary design, manufacturing, reproduction, use and sales rights thereto, and to any article
disclosed therein, except to the extent rights are
expressly granted to others.
COPYRIGHT NOTICE
Copyright 2004 by Telex Communications, Inc. All
rights reserved. Reproduction in whole or in part
without prior written permission from Telex is prohibited.
UNPACKING AND INSPECTION
Immediately upon receipt of the equipment, inspect
the shipping container and the contents carefully for
any descrpepancies or damage. Should there be
any, notify the freight company and the dealer at
once.
RETURN SHIPPING INSTRUCTIONS
Procedure for Returns
If a repair is necessary, contact the dealer where this
unit was purchased.
If repair through the dealer is not possible, obtain a
Return Authorization from:
Customer Service Depar tment
RTS/Telex Communications, Inc.
Phone: 1-800-392-3497
Fax: 1-800-323-0498
DO NOT RETURN ANY EQUIPMENT DIRECTLY TO
THE FACTORY WITHOUT FIRST OBTAINING A
RETURN AUTHORIZATION.
Be prepared to provide the company name, address,
phone number and a person to contact regarding the
repair, the type and quantity of equipment, a description of the problem and the serial number(s).
WHAT’S IN THIS PACKAGE?
WARRANTY INFORMATION
For Warranty Information, see the enclosed warranty
card.
CUSTOMER SUPPORT
Technical questions should be directed to:
Customer Service Depar tment
RTS/Telex
12000 Portland Ave South
Burnsville, MN 55337 U.S.A.
Phone: 1-800-392-3497
Fax: 1-800-323-0498
SHIPPING TO MANUFACTURER
All shipments of RTS products should be made via
United Parcel Service or the best available shipper,
prepaid. The equipment should be shipped in the
original packing carton; if that is not available, use
any suitable container that is rigid and of adequate
size. If a substitute container is used, the equipment
should be wrapped in paper and surrounded with at
least four inches of excelsior or similar shock absorbing material. All shipments must be sent to
the following address and must include the Return
Authorization.
Factory Service Department
Telex Communications, Inc.
1930 West 1st Street
Blue Earth, MN 56013 U.S.A.
Upon completion of any repair the equipment will be
returned via United Parcel Service or specified
shipper collect.
2 SSA-424 USER MANUAL
Contents
1 Description and Specifications ........................................................................................................5
1.1 G
ENERAL DESCRIPTION ..................................................................................................................5
1.2 GENERAL FEA TURES.......................................................................................................................5
1.3 F
RONT AND BACK PANEL DESCRIPTIONS............................................................................................6
1.3.1 FRONT PANEL .........................................................................................................................6
1.3.2 BACK PANEL ...........................................................................................................................6
PECIFICATIONS .............................................................................................................................6
1.4 S
2 Installation .......................................................................................................................................7
2.1 U
NPACKING AND INSPECTING ............................................................................................................7
2.2 MOUNTING....................................................................................................................................7
2.3 4-W
2.3.1 ADAM, ADAM CS, OR ZEUS AUDIO CONNECTION .....................................................................7
2.3.2 A
2.4 2-WIRE AUDIO CONNECTIONS ..........................................................................................................9
2.4.1 RTS TW AUDIO CONNECTIONS.................................................................................................9
2.4.2 AUDIOCOM AUDIO CONNECTION .................................................................................................9
2.4.3 CLEAR-COM AUDIO CONNECTION .............................................................................................10
2.4.4 OTHER 2-WIRE AUDIO CONNECTION..........................................................................................10
2.5 4-WIRE CALL SIGNAL CONNECTIONS ...............................................................................................11
2.5.1 CALL SIGNAL CONNECTIONS FOR ADAM, AD AM CS, AND ZEUS.................................................11
2.5.2 CALL SIGNAL CONNECTIONS FOR OTHER 4-WIRE COMMUNICATON SYSTEMS ...................................13
2.6 2-WIRE CALL SIGNAL ..................................................................................................................14
2.6.1 CALL SIGNAL CONNECTIONS FOR AUDIOCOM, RTS TW AND CLEAR-COM ......................................14
2.6.2 CALL SIGNAL CONNECTIONS FOR OTHER 2-WIRE COMMUNICATION SYSTEM ....................................14
IRE AUDIO CONNECTIONS .........................................................................................................7
UDIO CONNECTIONS FOR OTHER 4-WIRE COMMUNICATIONS SYSTEMS .............................................7
2.5.2.1 4-WIRE CALL SEND AND CALL ENABLE/INHIBIT.....................................................................13
2.5.2.2 4-WIRE CALL RECEIVE .....................................................................................................13
3 Operation ......................................................................................................................................15
3.1 GENERAL INSTRUCTIONS ...............................................................................................................15
3.2 OPERATING NOTES FOR ADAM, ADAM CS, AND ZEUS INTERCOM SYSTEMS.........................................15
4 Appendix .......................................................................................................................................16
4.1 INTERNAL ACCESS........................................................................................................................16
4.2 MODE DIP SWITCH SETTINGS ........................................................................................................16
4.3 LEVEL DISPLAY CALIBRATION .........................................................................................................16
4.4 CALL SIGNAL OPTION CARD INSTALLATION .......................................................................................17
SSA-424 USER MANUAL 3
4 SSA-424 USER MANUAL
1 Description and
Specifications
1.1 GENERAL DESCRIPTION
The SSA-424 Dual Digital Hybrid intervaces two, 2wire intercom lines to two, 4-wire intercom lines.
Unlike earlier analog hybrids, the SSA-424 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. The result is easy and
accurate setup. With the SSA-424, all need for test
tones, nulling adjustments and ducking adjustments
have been eliminated.
Compatible 2-wire intercom systems include RTS™
TW, Audiocom®, and Clear-Com®. Compatible 4wire intercom systems include Telex’s ADAM™,
ADAM™CS, and Zeus™ Digital Matrix Intercom
Systems.
The SSA-424 is also available with optional call
signal interfacing. This option provides bidirectional
call signal compatibility between the 2-wire and 4wire intercom systems.
Peak Reading Level Meters: Quick and accurate
visual audio level adjustment. No extra setup equipment or guesswork is required.
Direct ADAM/Zeus Audio Connection: Accepts
standard ADAM/Zeus DB9 or RJ11 keypanel cables.
Transformer Isolated: All audio inputs and outpus
are transformer isolated to prevent ground loops and
hum.
Call Signal Option: Detects call signals from any of
the compatible 2-wire intercom systems, and then
provides a +5VDC output to the 4-wire intercom
system. Accepts a contact closure input from the 4wire system and converts it to the call signal format
required by the 2-wire system. The SSA-424 can be
directly connected to an ADAM, ADAM CS, or Zeus
GPI (General Purpose Interface). GPI inputs can be
programmed to activate call signals and audio paths
to any of the available types of communication within
the 4-wire system, including intercom ports, camera
ISO circuits, IFB circuits, etc. GPI outputs can be set
up to place calls only from a specific keypanel within
the 4-wire system, or from any keypanel within the 4wire system that wishes to call the 2-wire system.
With features like digital signal processing, peakreading level meters and optional call signal interfacing, the SSA-424 Dual Digital Hybrid assures ease
of setup and maximum transparency between
intercom systems.
1.2 GENERAL FEATURES
Two Independent Hybrids : Interface two separate
2-wire lines to two separate 4-wire lines.
Automatic Nulling: Digital hybrids eliminate all
nulling and ducking adjustments. Quick, trouble-free
setup. Puts an end to concer ns about echo and
feedback when interfacing 2-wire lines.
LEVEL
SET
POWER
SYSTEM A
-3
-6 0
-15 -12 -9
+4dB
+8dB
0dB
-10dB
+12dB
4W LEVEL
REF SEL
AUX
J4B
J3B
4 WIRE SYSTEM 4 WIRE SYSTEM
+3 +6 +9
2
BAL
1
OFF
OFF
Telex Communications, Inc., Made in U.S.A.
J2B
2W CHAN SEL
12
J1B
TO
4W
+12
TO
2W
BAL
2 WIRE SYSTEM
Half-rack Wide, 1RU High: Two SSA-424’s fit into a
single rack space. Compatible with RTS TW rack
mount hardware. Can be mixed with other TW
equipment.
Universal Power Pack: Ready for worldwide use.
Automatically accepts any mains voltage from 100250 VAC, 50/60 Hz. Power pack equipped with
locking DIN connector for attachment to the SSA-
424.
LEVEL
SET
J1A
J2A
-15 -12 -9
+4dB
0dB
-10dB
4W LEVEL
REF SEL
+8dB
+12dB
SYSTEM B
-6 -3
OFF
AUX
J4A
J3A
2
1
0
+3 +6 +9
2W CHAN SEL
BAL
OFF
12
+5V
+15V -15V
BAL
TM
SSA-424
J5 POWER
+5V 3A
+15V 1.6A
-15V 0.3A
RTN
TO
4W
+12
TO
2W
RTN
Figure 1. SSA-424 Reference View
SSA-424 USER MANUAL 5
1.3 FRONT AND BACK PANEL DESCRIPTIONS
1.3.1 FRONT PANEL
There is a power ON/OFF and call indicator at the left
of the front panel. This indicator lights continuously
when the SSA-424 is turned on and flashes when an
incoming call signal is detected. The remainder of
the front panel is divided into controls and indicators
for the two separate hybrids, labeled SYSTEM A and
SYSTEM B. For each hybrid, there is a 10-segment,
peak reading level meter to display the 4-wire output
level (TO 4W). There is a recessed level set control
to the left of the 4-wire meter (LEVEL SET) and there
is also a recessed, 5-position range select control for
the 4-wire output (4W LEVEL REF SEL). Under the
4-wire meter, is an identical meter for the 2-wire
output level, and there is a recessed level set control
for the 2-wire output to the left of the meter. Under
the 2-wire meter, there is a recessed, 5-position
selector. The selector has two OFF positions for
when no 2-wire input is connected. The three
remaining switch positions select the 2-wire system
as follows: position 1 selects RTS TW channel 1;
position 2 selects RTS TW channel 2 or a Clear-Com
channel; the BAL position selects an Audiocom
balanced channel. There are 3 LED indicators to
display the current selection (2W CHAN SEL).
1.3.2 BACK PANEL
The power pack connector is located at the right end
of the back panel. This is a locking DIN connector.
The remainder of the back panel is divided into
connectors for the two separate hybr ids. Connectors
are labeled with “J” numbers followed fy “A” or “B” to
indicate system A or system B. For each hybrid,
there is an AUX connector. This is used to connect
to/from the optional call signal card. Below the AUX
connector, there are both a DB9F connector and an
RJ11 connector for 4-wire intercom connection.
These are directly compatible with standard ADAM/
Zeus keypanel cables. Next to the 4-wire connectors,
there is a 3-pin female XLR audio connectorfor
connection to the 2-wire intercom system. The pinout of this connector is determined by the position of
the TW CHAN SEL control on the front panel.
1.4 SPECIFICATIONS
2-Wire Ports
Input/Output Impedance: 5,000 ohms, nominal
Operating Level: -10dBu to 0 dBu, nominal
Level Adjustment Range: ±12dB
4-Wire Ports
Input Impendance: 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 4.5 kHz, +1/-6dB
S/N Ratio (Ref 1 kHz, 0 dB@2-wire): TBD
Crosstalk: TBD
Environmental
Operating Temp: -20°C to 50°C (-4°F to 122°F)
Storage Temp: -40°C to 85°C (-40°F to 185°F)
Humidity: 0 to 95%, non-condensing
Mains V oltage
100 to 250 VAC, 50/60 Hz
Dimensions
1.72” (44mm) high x 8.19” (208mm) wide x 8.0”
(204mm) deep
Weight
5.0 lbs (2.3kg)
Finish
Thermoplastic front panel, almunimum case, light
gray finish
Approvals
UL, CSA, UDE, CE
Specifications subject to change without notice.
6 SSA-424 USER MANUAL
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