Clear-Com Audio Connection; Other 2-Wire Audio Connection - RTS SSA-424 User Instructions

2.4.3 Clear-Com Audio Connection

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). Connect a separate
Clear-Com party line to the J1B connector (System
B).
The SSA-424 features internal DC 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.
10 User Instructions, SSA-424 Dual Digital Hybrid

2.4.4 Other 2-wire Audio Connection

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:
Balanced Configuration
Pin 1: No connection
Pin 2: Balanced Audio + Input/Output
Pin 3: Balanced Audio - Input/Output
There are two possible configurations for unbalanced con-
nection:
Unbalanced Configuration 1
Pin 1: Audio Common
Pin 2: Audio + Input/Output
Pin 3: No connection
Unbalanced Configuration 2
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.