ACC2500 Audio Control Center
Installation
29
09/08
PB4 – Keyboard Diagnostic
This function is accessible via Main Diagnostics, then Internal Diagnostic (
PB3
) and verifies that the
keyboard is operating correctly. After entering the keyboard diagnostic mode, the display shows:
KEYBOARD
TEST
KEYCODE:
XX
When any key is pressed (except
TRANSMIT
), the corresponding keycode is displayed. Refer to the
keycode table that follows:
Button
Keycode (Hex)
Button
Keycode (Hex)
0–9
00 - 09
PB1
–
PB4
30 - 33
*
0e
ALERT
45
#
0f
PAGE
44
TRANSMIT
No code
(Will exit test.)
CLEAR
47
MONITOR
11
SELECT
46
TIME
13
DOWN
40
VOLUME
Down
20
UP
41
VOLUME
Up
21
Press
TRANSMIT
to exit the keyboard diagnostic.
PB4 – Tone/Alarm Diagnostics
This function is accessible via Main Diagnostics mode select (
PB4
), and allows adjustment of the levels of
sidetone (
PB1
) and the DTMF tones (
PB2
). The tone level adjust will display, then select
PB1
,
PB2
, or
PB3
.
•
The sidetone level used for speaker tones can be adjusted to suit the user.
•
The alert and page tone line levels can be adjusted relative to HLGT.
PB1 – Sidetone Level Adjust Mode
This mode allows the adjustment of the sidetone level to -15 dB in 3 dB steps:
Button(s)
Sidetone Level Adjust Mode Function:
VOLUME
Up or
VOLUME
Down
Increases/decreases the sidetone line level. Each time the
VOLUME
Up or
VOLUME
Down button is pressed, a beep is generated and the LCD display shows the new
setting.
TRANSMIT
Exits the sidetone level adjust mode and returns the unit to the tone level adjustment
screen.
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...