RTS SSA-424 User Manual

1 Use standard Clear-Com 3-pin cables.  Connect

one Clear-Com party line to the J1A connector
on the back of the SSA-424 (System A).  Con-
nect a separate Clear-Com party line to the J1B
connector (System B).

✏

The SSA-424 features internal CD isolation.

You can therefore connect the SSA-424 to
powered Clear-Com cables, and it will not
draw any power from the Clear-Com system.

2 On the SSA-424 front panel, set the System A

and System B 2W CHAN SEL switches to
position 2.

✏

If the System A or System B hybrid will not
be used, set its 2W CHAN SEL switch to
either OFF position.

1 Use the J1A connector on the back of the SSA-

424 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
depends on whether you are connecting a
balanced or unbalanced 2-wire line:

Pin 1:

No connection

Pin 2:

Balanced Audio + Input/Output

Pin 3:

Balanced Audio - Input/Output

There are two possible configurations for unbal-
anced connection:

Pin 1:

Audio Common

Pin 2:

Audio + Input/Output

Pin 3:

No connection

Pin 1:

Audio Common

Pin 2:

No connection

Pin 3:

Audio + Input/Output

2 On the SSA-424 front panel, set the CHAN SEL

switches as follows:

Balanced Configuration: set the CHAN SEL
switches to the BAL position

Unbalanced Configuration 1:  set the CHAN
SEL switches to position 1.

Unbalanced Configuration 2:  set the CHAN
SEL switches to position 2.

✏

If the System A or System B hybrid will not
be used, set its 2W CHAN SEL switch to
either OFF position.