HM Electronics EOS HD - Cable Pulling; Outside Microphone;Speaker Installation & Cable Connections

EQUIPMENT INSTALLATION
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4.3 Cable Pulling
CAUTION: If you do not use the HME audio cable, make sure that the speaker/ microphone
wires used are a twisted pair. For Full-Duplex installations, the speakers and microphones must
use separate cables or audio feedback will occur.
Never run high-voltage cables in the same conduit with audio or loop cables.
The recommended HME audio cable has four color coded, insulated wires and a bare shield (drain) wire.
It can be used to connect any component to the base station. Pull the cables (two for full-duplex, one for
half-duplex) through the conduit from the speaker post or menu board into the building as follows:
h For dual drive-thru installations, repeat the steps below to route shielded cable from inside
the building to the speaker post or menu board in each lane.
h For tandem drive-thru installations, repeat the steps below to route shielded cable from inside
the building to the speaker post or menu board at each order point.
See Section 1.1, pg. 1, for details on both modes.
1. Run sh tape from inside the building, through the conduit to the speaker post or menu board.
2. Go outside. If you are pulling more than one cable, mark the cables and spools for
identication. Fasten each cable to the sh tape where it comes out of the conduit, and go
back inside the building.
3. Pull the sh tape and cable through the conduit into the building. Disconnect the cable from
the sh tape and pull enough of it in to reach the base station.
4. Go outside again and route the cable from the outside conduit to the speaker and microphone
units in the speaker post or menu board.
5. Cut the cable, leaving about 3 feet (915 mm) of slack. If more than one cable have been pulled,
mark the ends of the cables again for identication.
6. Remove about 2 inches (50 mm) of the outer insulation from the end of each cable. Strip about
½ inch (12 mm) of insulation from each of the four wires in the cable.
7. Route all the cables together to the base station, through walls and over ceiling panels if
possible. Cut off any slack cable so no coils of excess cable are left in the ceiling or elsewhere.
4.4 Outside Microphone/Speaker Installation & Cable Connections
This section describes standard, full-duplex installations, using a DM5 Microphone and SP10 Speaker.
Installation requirements may vary. In dual-lane or tandem systems, speakers and microphones must be
installed for each lane or order point. Refer to the wiring diagrams listed in Section 14, pg. 102.
Note: The DM5 requires a 3-wire connection.
First, mount the microphone against the speaker grill in the speaker post or menu board. Position it
where the customer will speak directly into it. The speaker can then be installed anywhere around
the microphone, as long as they are at least two feet (610 mm) apart (center to center) to avoid audio
feedback.