Table of Contents
ACC2500 Audio Control Center
09/08 Pub.
42004-417A
iv
Reloading Factory Defaults ......................................................................................................................... 25
Main Diagnostics Selection ......................................................................................................................... 26
PB1 – Line Output Adjust ............................................................................................................................ 26
PB2 - Line-In Sensitivity .............................................................................................................................. 27
PB3 – Internal Diagnostics.......................................................................................................................... 28
PB1 – Relay Module Diagnostics ..............................................................................................................................28
PB2 – Toggle Backup Mode......................................................................................................................................28
PB3 – RS-232 Diagnostic..........................................................................................................................................28
PB4 – Keyboard Diagnostic ......................................................................................................................................29
PB4 – Tone/Alarm Diagnostics.................................................................................................................... 29
PB1 – Sidetone Level Adjust Mode...........................................................................................................................29
PB2 – DTMF Level Adjust Mode .............................................................................................................................30
PB3 –AMI Message Diagnostics ...............................................................................................................................30
Time Setting................................................................................................................................................. 30
THEORY OF OPERATION ............................................................................................................................. 31
G
ENERAL
D
ESK
S
ET
O
VERVIEW
......................................................................................................................... 31
R
ECEIVE
A
UDIO
................................................................................................................................................ 31
S
PEAKER
A
UDIO
................................................................................................................................................ 31
T
RANSMIT
A
UDIO
............................................................................................................................................. 32
M
ICROPHONE
A
UDIO
......................................................................................................................................... 32
R
ELAY
C
ONTROL
M
ODULE
................................................................................................................................ 32
R
ESET
C
IRCUIT
................................................................................................................................................. 32
CARD SUITE PROGRAMMING SOFTWARE .............................................................................................. 33
G
ENERAL
D
ESCRIPTION
..................................................................................................................................... 33
C
ONNECTION
.................................................................................................................................................... 33
I
NSTALLATION
.................................................................................................................................................. 33
R
EADING THE
U
NIT
........................................................................................................................................... 33
CARD
S
UITE
P
ROGRAMMING
............................................................................................................................ 34
Editing Screen ............................................................................................................................................. 34
P
ROGRAMMING THE
ACC2500 .......................................................................................................................... 34
Zone Field Name ......................................................................................................................................... 34
Alarm Field Name ....................................................................................................................................... 34
DTMF Setup ................................................................................................................................................ 34
Page PTT Pretime.....................................................................................................................................................34
Zone Address Length ................................................................................................................................................35
Preamble Digits ........................................................................................................................................................35
Zone Activation Duration..........................................................................................................................................35
DTMF Digit Time ....................................................................................................................................................35
Restrict Entry of Manual Zones.................................................................................................................................35
Restrict DTMF Over Dial .........................................................................................................................................35
Preprogrammed Zone/Alarm Aliases ........................................................................................................... 35
Preprogrammed Zone / No Alarm..............................................................................................................................35
Preprogrammed Zone with Alarm .............................................................................................................................36
Programmable Buttons ................................................................................................................................ 36
Other Necessary Programming Settings....................................................................................................... 36
TROUBLESHOOTING..................................................................................................................................... 37
T
ROUBLESHOOTING THE
ACC2500
D
ESK
S
ET
.................................................................................................... 37
F
USE
R
EPLACEMENT
.......................................................................................................................................... 38
CIRCUIT BOARDS ........................................................................................................................................... 39
SCHEMATICS................................................................................................................................................... 43
NOTES ............................................................................................................................................................... 52
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...