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Installation & Setup
26
Precis SD Instruction Manual
Wiring Audio Connectors
The stereo audio connectors for the Precis SD are pluggable 5-position terminal block that can be wired
for balanced (differential) or unbalanced (single-ended) audio (FIG. 14).
Wiring Sources & Destinations
Source and destination devices require either balanced (differential) or unbalanced (single-ended)
connections. FIG. 13 illustrates options for wiring between sources and input connectors and between
output connectors and the destinations. More than one option can be use in the same system. For
balanced and unbalanced wiring details, see FIG. 14.
Attaching Wires
To attach stereo audio input and output wires:
1.
Unscrew the clamps on the audio connector.
2. Insert the wires and firmly re-tighten the clamps to make secure connections.
For balanced audio wire placement, see the left wiring diagram in FIG. 14.
For unbalanced audio wire placement, see the right wiring diagram in FIG. 14.
Note: For stereo audio signals using twisted pair wire, connect the shield (ground) only at one end
(recommend receiving end) to minimize low frequency noise.
For stereo audio signal specifications, see “Signal Specifications” on page 34.
FIG. 13 Options for source-to-Precis SD-to-destination 5-Term wiring
FIG. 14 Balanced audio Unbalanced audio