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AE/LZB 119 1892 R1A OPERATING PROCEDURES

paging tone encoder is not required if the

appropriate feature licensed software option is

available at the console. The tone generation

circuits are also utilized during automated test

procedures performed at the factory.

Firmware

The operating program code for the microcontroller

circuits within the Enhanced Audio Enclosure is stored on a

factory-programmed 128K x 8-bit read-only memory

(ROM) chip located on the Audio System Board.

Occasionally, code stored on this chip may change as circuit

improvements occur and/or as new features are added to the

Enhanced Audio Enclosure. The chip is socketed which

allows simple removal if replacement is necessary. Refer to

the console’s Software Release Notes (SRN-1000-xx) for

specific details.

SPEAKERS KITS AND ASSEMBLIES

Speaker Kits used with the Enhanced Audio Enclosure

consist of mechanical hardware, one or more Speaker

Assemblies, and cables which interconnect each Speaker

Assembly to the Enhanced Audio Enclosure. For a given

enclosure, one Speaker Assembly is the "select speaker" and

the remaining are the "unselect speakers."

Speaker Kit mechanical hardware may be of several

different varieties providing either desktop speaker

operation in the form of a self-contained single-speaker case

or a rack-mount version in the form of a standard 19-inch

EIA rack mount assembly. Normally, rack-mount Speaker

Kits are factory equipped with two (2) Speaker

Assemblies—one select speaker and one unselect speaker. If

additional unselect speakers are required for a given

console, up to two additional Speaker Assemblies may be

added for a total of four (4) speakers in a 3-rack-unit-high

assembly.

NOTE

See the table and parts lists in LBI-39104 for

Speaker Kits' contents.

Each Speaker Assembly consists of a high-quality

magnetically-shielded speaker, a Speaker Amp Board which

accommodates audio power amplification circuitry, a front

panel, a panel-mounted volume control potentiometer, and

mechanical hardware. This unit may be installed in the

desktop case or in the rack-mount frame. Since a

magnetically-shielded speaker is employed, this assembly

may be located near a video display monitor without causing

monitor distortion. The difference between the select and

unselect Speaker Assemblies is front panel labeling.

The Speaker Amp Board is mounted just behind the

speaker on long metal stand-offs fastened to the assemblies

front panel. It amplifies low-power speaker audio signals

from the Enhanced Audio Enclosure and drives the speaker

with the amplified signal. It can drive the speaker with up to

five (5) watts of audio power. The interconnect cable

between the Enhanced Audio Enclosure and the Speaker

Assembly delivers both twelve-volt dc operating power and

the low-power speaker audio to the Speaker Amp Board.

OPERATING PROCEDURES

For complete operating procedures on the C3 Maestro

console for Windows NT, refer to Operator’s Manual

AE/LZT 123 1892.

INSTALLATION AND SET-UP

The Installation And Set-Up Manual included within

this manual set contains board-level configuration, cable

interconnection information and console application start-up

information. The manual also contains a detailed overview

of the advanced configurations possible for the console

including, including information on the feature licensed

options.

ADMINISTRATOR’S INFORMATION

System administration information for the C3 Maestro

console for Windows NT is available in a separately-

supplied manual. Administrator’s Manual

AE/LZB 119 1897 includes detailed information on the

console application such as program file names and

functions, the optional console GUI-related configurations

which are possible, and the Configuration Editor off-line

program. It also includes in-depth information on the

console’s feature licensed options and configuration

information on Windows NT-related settings which

influence how the console application operates. Typically,

knowledge of the information presented in the

Administrator’s Manual is only required by administrative

personnel in the CEC/IMC network system who are

responsible for the system’s dispatch consoles.

MAINTENANCE

Enhanced Audio Enclosure and Speaker Assembly

disassembly instructions follow. Refer to the appropriate

maintenance manual included with this manual set for

detailed board-level maintenance information. These

maintenance manuals contain board outline and schematic

NOTE

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