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09/08
Operation
The ACC2500 provides system control of a GAI-Tronics wide-area broadcast system consisting of an
Audio Messenger Interface (AMI), amplified addressable speakers and/or stanchion broadcast products. It
allows selection of individual units or zones and selection of preprogrammed speech/tone alarms.
Audio that is output from the AMI is directly routed to the integral speaker or handset to allow direct
monitoring of the AMI audio by the ACC2500 operator.
Display
The ACC2500 has a backlit 2
×
16-character super-twist LCD display to provide valuable operator
information. This information allows the operator to determine the status of the unit. The following
describes the display at various states:
At power up:
•
Initially, line 1 shows:
CHECKING
PARAMS
, and line 2 shows:
PLEASE
WAIT.
•
After 3 to 5 seconds, line 1 shows
ACC2500
, and line 2 shows the firmware version.
During normal operation,
Line 1 shows the currently selected zone, i.e. Zone 12
Line 2 shows:
•
Speaker/handset audio level during a change of level
•
Alarm selection when turned on or active
•
AMI activity during internal and external events
•
The current time when the
TIME
button is pressed
•
Operator instructions during broadcast of live voice
During installation,
the display shows various diagnostic information.
Summary of Contents for ACC2500
Page 43: ...39 09 08 Circuit Boards...
Page 44: ...Circuit Boards ACC2500 Audio Control Center 40...
Page 45: ...ACC2500 Audio Control Center Circuit Boards 41...
Page 46: ...Circuit Boards ACC2500 Audio Control Center 42...
Page 47: ...43 09 08 Schematics...
Page 48: ...ACC2500 Audio Control Center Schematics 44 Desk Set Line Interface Sheet 1...
Page 49: ...ACC2500 Audio Control Center Schematics 45 Desk Set User Audio I O Sheet 2...
Page 50: ...Schematics ACC2500 Audio Control Center 46 Desk Set Control Microprocessor I O Sheet 3...
Page 51: ...ACC2500 Audio Control Center Schematics 47 Desk Set DSP Block Sheet 4...
Page 52: ...Schematics ACC2500 Audio Control Center 48 Desk Set Tone Key Panel Sheet 5...
Page 53: ...ACC2500 Audio Control Center Schematics 49 Desk Set Power Supply Sheet 6...
Page 54: ...Schematics ACC2500 Audio Control Center 50 Schematic Sheet 7...