QSC DSP-3' Manual descarregar pdf (Página 14)

Section 2: Installation- Connections

CONNECTING AUDIO INPUTS AND OUTPUTS:

Whenever possible, use balanced connections for the lowest possible noise levels and for minimizing the possibility of hum inducing ground

loops. The audio inputs and outputs of the DSP-3 use 3-pin “Phoenix”-type (Euro-style) terminal block connectors. These connectors allow

pre-wiring of inputs without any soldering and allow for rerouting of audio inputs by simply interchanging connector locations without the

need for any tools. See Appendix for connector manufacturer’s part number reference.

To connect your signal wire to the terminal-block plug simply back the

screws out a few turns to open the wire-clamp, carefully insert the conductors

into the proper location, and re-tighten the clamping screw.

The recommended stripping length for the wires is approximately 6 to

8 mm ( 1/4 to 5/16 inch). When stripping the audio cable, be careful not to nick

or cut the conductor strands. After each conductor has been stripped and

dressed, insert it fully into the connector and tighten the retaining screw. When

stranded wire is used, carefully twist the conductor strands together so that

when they are inserted into the connector assembly, no loose strands short

adjacent terminals.

Unbalanced inputs can be used if required. If unbalanced audio sources are

used, it is preferable to use an appropriate audio transformer (or other unbal-

anced-to-balanced “converter”) to provide a balanced input to the DSP-3. If this

is not possible, then it is recommended that the negative terminal and

shield terminal be connected to one another with a jumper wire.

Balanced connection is recommended for all inputs. The terminal block

inputs on the DSP-3 are electronically balanced. Balanced input cables are

recommended to minimize noise pick up and prevent ground loops.

With the connector oriented as shown at the right, connect the positive (+) signal

wire to the left-most

When using a CM16a Amplifier Network Monitor with the DSP-3, the input signal for channel

1 &2 are provided by the DATA PORT connection. The CH 1 INPUT and CH 2 INPUT connectors

should not be used when the DSP-3 is connected to a CM16a Amplifier Network Monitor.

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QSC DSP-3' Manual Página 14