RTS DSI 2008 manual Balanced Audio Configuration, Unbalanced Configuration

Call Signal Connections for Other 2-Wire Communication Systems

Any other 2-wire device must be able to generate and receive a 20 kHz signal superimposed on the audio as follows:

Balanced Audio Configuration

Pin 1 No Connection

Pin 2 Balanced 20 kHz + Input/Output

Pin 3 Balanced 20 kHz - Input/Output

DSI 2008 Signal Specifications for balanced configuration:

DSI 2008 Receive: 20 kHz ±100 Hz, 100 mVRMS

DSI 2008 Send: 20 kHz ±800 Hz, 500 mVRMS ±10%

Unbalanced Configuration 1

Pin 1 20 kHz Common

Pin 2 20 kHz Input/Output

Pin 3 No Connection

,

Unbalanced Configuration 2

Pin 1 20 kHz Common

Pin 2 No Connection

Pin 3 20 kHz Input/Output

DSI 2008 Signal Specifications for unbalanced configuration:

DSI 2008 Receive: 20 kHz ±100 Hz, 100 mVRMS

DSI 2008 Send: 20 kHz ±800 Hz, 350 mVRMS, ±10%

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