RTS DSI 2008 Specifications Page 19

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15
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:
DSI 2008 Signal Specifications for balanced configuration:
DSI 2008 Receive: 20 kHz ±100 Hz, 100 mV
RMS
DSI 2008 Send: 20 kHz ±800 Hz, 500 mVRMS ±10%
,
DSI 2008 Signal Specifications for unbalanced configuration:
DSI 2008 Receive: 20 kHz ±100 Hz, 100 mV
RMS
DSI 2008 Send: 20 kHz ±800 Hz, 350 mVRMS, ±10%
Balanced Audio Configuration
Pin 1 No Connection
Pin 2 Balanced 20 kHz + Input/Output
Pin 3 Balanced 20 kHz - Input/Output
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
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