RTS DSI 2008, Инструкция пользователя

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DSI-2008 Installation 11
Bosch Security Systems, Inc. User Manual F.01U.193.295 Rev. 05
Other 2-wire Audio Connection
1.
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
connector to connect a second 2-wire line to the System B hybrid. The pin configuration for the J1A and J1B connec-
tors 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.
There are two (2) possible configurations for unbalanced connection:
2.
On the DSI 2008 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.
FIGURE 3.
Using a JB-2 Junction Box to split a 2-channel Audiocom cable into two 1-channel cables.
Balanced Configuration
Pin 1 No Connection
Pin 2 Balanced Audio + Input/Output
Pin 3 Balanced Audio - Input/Output
** Termination 300

Unbalanced Configuration 1
Pin 1 Audio Common
Pin 2 Audio Input/Output
Pin 3 No Connection
** Termination 200

Unbalanced Configuration 2
Pin 1 Audio Common
Pin 2 No Connection
Pin 3 Audio Input/Output
** Termination 200
