Logitek Electronic Systems AE-32 Audio Engine - Manual (Page 10)

Physical Installation
Logitek Audio Engine Reference Manual 8
3 Physical Installation
This chapter covers basic installation and cabling information, and details some cabling examples.
As preferences and techniques for installation vary widely, this information should primarily be used
as a starting point for planning your install.
Installation
The Audio Engine is designed to be mounted in a standard 19” rack, and occupies seven rack units.
The Audio Engine has a minimum module/card complement of one Power Supply, one
Communications Controller
and one Audio Card (either analog or digital). The minimum
configuration can be expanded by a second Power Supply, DSP Cards, and up to eight Audio
Cards
in any combination of digital, analog or network cards.
The Communications Controller provides the connection from the Engine to Console Surfaces,
multiple ancillary Utility Panels, and up to two computers for control and configuration.
The Audio Engine should be mounted in a clean, dry and well-ventilated area. Take care that the
small ventilation fan on the upper rear corner of the Audio Engine housing is free from obstructions.
The fan is shipped un-mounted for transit and must be installed before the engine is used. There is
a separate mains inlet for each power supply slot on the rear panel.
The power cords should be connected to a properly grounded outlet with the correct voltage
present. After installation replace the front cover on the Audio Engine to protect the wiring and
controls from tampering.
Cabling
All cables to the Audio Engine enter at the rear of the cabinet, route through the bottom of the
assembly and then attach to the appropriate card in the Engine.
Audio Cable
Be sure to use properly rated digital cable for digital audio connections. For twisted pair, this is
normally 110 ohm low capacitance cable such as Belden 1800A or Gepco 5524EZ.
These cable types are also excellent for analog audio so using digital cable for all audio connections
would be an acceptable and wise choice, negating the need to order separate types of cable.
For a neater installation, a multi-pair cable may be preferred. CAT5 cable is a popular alternative,
due to its high availability and low cost. The impedance range of CAT5 cable fits entirely within the
range allowed by the AES/EBU specification. The tightly matched wire resistance also makes CAT5
an excellent analog cable.