RTS SSA-424A - Manual (Page 5)

1
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. 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,
Audiocom
®
, and Clear-Com
®
. Compatible 4-wire intercom
systems include Telex’s ADAM™, ADAM CS™, and
Zeus™ Digital Matrix Intercom Systems.
The SSA-424A is also available with optional call signal
interfacing. This option provides bi-directional call signal
compatibility between the 2-wire and 4-wire intercom
systems.
With features like digital signal processing, peak-reading
level meters and option call signal interfacing, the
SSA-424A Dual Digital Hybrid assures ease of setup
maximum transparency between intercom systems.
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 concerns about echo and feedback when interfacing
2-wire lines.
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 DB-9 or RJ-11 keypanel cables.
Transformer Isolated: All audio inputs and outputs 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
+5 VDC output to the 4-wire intercom system. Accepts a
contact closure input from the 4-wire system and converts it
to the call signal format required by the 2-wire system. The
SSA-424A 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 with 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 4-wire system that wishes to call the
2-wire system.
Half-rack Wide, 1RU High: Two SSA-424As fit into a
single rackspace. Compatible with RTS TW rack mount
hardware. Can be mixed with other TW equipment.
Universal Power Pack: Ready for worldwide use.
Automatically accepts any main voltage from 100-250 VAC,
50/60 Hz. Power pack equipped with locking DIN connector
for attachment to the SSA-424A.