RTS SSA-424A Manuale Utente
5
CHAPTER 2
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.
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.
•
If the SSA-424A has the call signal option, the power
indicator flashes whenever a call signal is received from
either 2-wire line, and activity on the level display helps
to indicate which line is calling. If the SSA-424A is
physically positioned near the 4-wire operator, this can
be used as an incoming call indication for the 4-wire
system, if desired (although other methods are available
as described in “4-Wire Call Signal Connections” on
page 8).
indicator flashes whenever a call signal is received from
either 2-wire line, and activity on the level display helps
to indicate which line is calling. If the SSA-424A is
physically positioned near the 4-wire operator, this can
be used as an incoming call indication for the 4-wire
system, if desired (although other methods are available
as described in “4-Wire Call Signal Connections” on
page 8).
NOTE: You may wish to read about the internal mode DIP
switches before mounting the SSA-424A. For further
information, see Table 1 on page 15.
switches before mounting the SSA-424A. For further
information, see Table 1 on page 15.
4-Wire Audio Connections
ADAM, ADAM-CS, or Zeus Audio Connection
1.
Use standard 9-pin or RJ-11 keypanel cables. Connect
from one port of your intercom system to J2A or J3A
(System A connection) on the back of the SSA-424A.
Connect from another port to J2B or J3B (System B
connection).
from one port of your intercom system to J2A or J3A
(System A connection) on the back of the SSA-424A.
Connect from another port to J2B or J3B (System B
connection).
2.
On the SSA-424A front panel, set the 4W LEVEL REF
SEL switches to the +8 dB position.
SEL switches to the +8 dB position.
Audio Connections for the Other 4-wire
Communications Systems
Communications Systems
1.
Construct 9-pin or RJ-11 cables to connect from the
4-wire system to the SSA-424A. To connect to the
System A hybrid, use either J2A or J3A; for the System
B hybrid, use either J2B or J3B. Pin connections are as
follows:
4-wire system to the SSA-424A. To connect to the
System A hybrid, use either J2A or J3A; for the System
B hybrid, use either J2B or J3B. Pin connections are as
follows:
9-Pin Connection
Connector Type: 9-pin male D-subminiature
Pin 1
No connection
Pin 2
No connection
Pin 3
No connection
Pin 4
Balanced Audio + 4-wire output
Pin 5
Balanced Audio - 4-wire output
Pin 6
No connection
Pin 7
Balanced Audio - 4-wire input
Pin 8
Balanced Audio + 4-wire input
Pin 9
No connection
RJ-11 Connection
Connector Type: RJ-11 plug
Pin 1
No connection
Pin 2
Balanced Audio + 4-wire input
Pin 3
Balanced Audio + 4-wire output
Pin 4
Balanced Audio - 4-wire output