| SMR 821 User Manual |
Connections | Connecting the SMR 821 is not much different than any other analog audio |
| product. There are inputs and outputs, but there are also additional connec- |
| tions that you need to be aware of . These include the external control ports |
| and the Bus Link connectors. All cables for these connections should be |
| shielded. Refer to the following illustrations for each type of connection. |
Audio Input
The inputs to the SMR 821 are balanced. This means that there are three wires for each connection, a positive, negative and shield. These should be connected to each pin accordingly.
Balanced Microphone or Line Level Input
Shield
Audio Negative
Audio Positive
Figure 1. Balanced Audio Input Connections
Insert jumper wire between the negative
and shield pins for
Un-Balanced Microphone or Line Level Input
Shield
Audio “Hot” or Positive
Figure 2. Un-Balanced Audio Input Connections
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