Emtech-electronics IA-204S Manuel d'utilisateur télécharger pdf (Page 7)

CONNECTING THE IA-204

WIRING

• Microphone and line input signals require shielded cables.

• If using the RCM-42B Room Combining Matrix, use shielded cables to connect the RETURN and SEND

between the IA-204 and RCM-42B. Each IA-204 is shipped with jumpers on the seven pin orange screw

terminal connector between pins 4 and 6, and 5 and 7. These need to be removed if you are using the RCM-

42B. These jumpers are necessary to connect the SEND and RETURN when no RCM-42B is connected.

• A two conductor non-shielded wire is used to connect the ROOM MIXING switch to the RCM-42. If you

are using a remote room combining switch, separate from the IA-204, you will need a three conductor wire

(see room combining section for more detail).

• Ground all cable shielding only at the IA-204! Do not ground mic or line inputs to conduit, as this can create

ground loops and cause noise and system oscillation.

• All cables should be brought at least 6” beyond the 4 gang electrical box for ease of installation and future

service.

• All connections should be terminated with the proper connectors supplied with the IA-204.

• To avoid electrical interference, signal cables should not run close to exposed high voltage wiring.

• Be sure to follow local building codes.

RECOMMENDED CABLES

• The following cable types are recommended:

• 2 Conductor shielded for microphone and line inputs.

• 2 pair (each containing 2 conductors) individually shielded for SEND and RETURN

connections between the IA-204 and RCM-42B. (Belden 8723, West Penn 510, or

equivalent)

• 2 conductor non-shielded for the ROOM MIXING control lines (if using the RCM-

42B).

IA-204 INSTALLATION

WARNING! The IA-204 uses a bridging amplifier circuit. Do not ground either of the speaker outputs. If connecting

a headphone jack, make sure it is insulated from ground!

• All wiring to the IA-204 is low voltage and connects to the IA-204 with removable screw terminal

connectors.

• Remove the screw terminal connector from the IA-204, insert the bare wire end into the desired slot, and

tighten the screw to secure the wire in place.

• Verify all wire connections and take care not to reverse the screw terminal connectors when replacing them

on their respective circuit board terminals.

• When the screw terminal connectors are properly oriented, all wiring faces down toward the bottom of the 4

gang electrical box.

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Emtech-electronics IA-204S Manuel d'utilisateur Page 7