Clear-Com Audio Connection; Other 2-Wire Audio Connection - RTS DSI 2008 User Instructions

Using a JB-2 Junction Box to split a 2-channel Audiocom cable into two 1-channel cables.
FIGURE 4.

Clear-Com Audio Connection

Use standard Clear-Com 3-pin cables. Connect one Clear-Com party line to the J1A connector on the back of the DSI
1.
2008 (System A). Connect a separate Clear-Com party line to the J1B connector (System B).
NOTE: The DSI 2008 features internal DC isolation. You can therefore connect the DSI 2008 to powered Clear-Com
cables, and it will not draw any power from the Clear-Com system.
On the DSI 2008 front panel, set the System A and System B 2W CHAN SEL switches to position 2.
2.
NOTE: If the System A or System B hybrid will not be used, set the 2W CHAN SEL switch to the OFF position and
attach a dummy load to the TW XLR connector.

Other 2-wire Audio Connection

Use the J1A connector on the back of the DSI 2008 to connect one 2-wire line to the System A hybrid. Use the J1B
1.
connector to connect a second 2-wire line to the System B hybrid. The pin configuration for the J1A and J1B
connectors depend on whether you are connecting a balanced or unbalanced 2-wire line, as follows:
NOTE: TW systems must provide termination on the audio channel.
Balanced Configuration
Pin 1 No Connection
Pin 2 Balanced Audio + Input/Output
Pin 3 Balanced Audio - Input/Output
** Termination 300 Ω
There are two possible configurations for unbalanced connection:
Unbalanced Configuration 1
Pin 1 Audio Common
Pin 2 Audio Input/Output
Pin 3 No Connection
** Termination 200 Ω
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