Specifications
Table Of Contents
INTEGRATED AUDIO-VIDEO-CONTROL SYSTEMS
BeverlyHillsCityHall–TelevisionProductionAVCSystemsUpgrade
October15
th
,2012‐Page‐7
and tune all audio and video systems supplied. This shall include but not be limited to
equalization, delay settings and setting the gain structure of the system.
3.2 EQUIPMENT RACKS
A. Rack Equipment Installation – All equipment within each AV cabinet rack shall be logically
arranged for accessibility, and convenience of maintenance. Equipment shall be mounted
using rack kits installed by the manufacturer. Custom shelves by Middle Atlantic, or
equivalent, are acceptable for equipment that does not have a rack mount kit available.
Equipment in custom shelves shall be securely attached to the shelf. Cabinet and panel
faces, including drawers, shall be black.
B. Wiring within racks and cabinets shall be installed to conform to standard broadcast and
sound engineering practices as described in reference materials such as the Broadcast Audio
Equipment for AM, FM, Television and Sound System Engineering. Cable lacing bars shall
be used where applicable. Wiring shall be cabled, laced and securely fastened in place so
that no weight is imposed on any equipment, control switch, connector, or terminal.
C. The audio system output shall be free from perceptible noise (including, but not limited to,
hum or distortion) at the system’s maximum operating level. The AV contractor is responsible
for taking the necessary precautions to avoid noise being introduced into the audio signal
paths. These precautions shall include, but not be limited to, ensuring that all wires carrying
line level or microphone level audio signals are shielded, input and output circuits and
terminals are installed in such a way as to provide sufficient isolation and decoupling, and
utilizing an isolated grounding scheme.
D. Conductor shields for each system shall be grounded at one location only. Grounding shall
be done within cabinet racks. There shall be no metallic connection between systems.
E. Permanent (laminated) cable labels shall be applied to all wires at each end and shall include
identification numbers which are documented in a written cable run list.
3.3 TYPICAL ELECTRONIC EQUIPMENT ROOM GUIDELINES
A. An environmentally controlled EER shall house all centralized AV source, monitoring, signal
switching, routing, processing, and transmitting equipment within equipment racks. The
equipment racks and/or remote equipment locations shall provide room for basic terminations
and allow in most cases room for expansion of the system.
B. The EER shall be sized to accommodate the required number of full size Middle Atlantic MRK
4436 equipment racks or existing equivalent. The Audio Video Racks (AVR) shall be installed
side by side and have one meter of clearance to the front and rear and to at least one side.
The equipment racks shall be attached to the floor using isolation mounts or a rubber mat to
prevent ground loops that may occur should the metal rack come in contact with the building
concrete.
C. Room for expansion and a work area for maintenance staff shall be considered when sizing
the EER.
D. Cable ladder tray shall be above the equipment racks. If the cable comes from the floor the
excess lengths shall be enough to rise from the bottom of the rack it enters to the top and
then to the end of the group of racks. This will provide the installers with the excess they
need to properly and neatly dress the AV cable in place. The AV installer shall coordinate
with the Electrical Contractor regarding conduit stub ups in the EER and ladder tray layouts.
E. The EER/Remote storage locations shall be climate controlled.