Cambridge Audio Azur 840A Supplementary Manual page 4
Serial control protocol v1.1
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Also See for Azur 840A:
- Service manual (63 pages) ,
- User manual (26 pages) ,
- White paper (23 pages)
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1.4.4 Group 4 - Replies from Control Commands and Updates
Command
Command Description
Number
01 to 07
Main Input Source Changed
08
Tape Monitor Changed
11
Power State Changed
12
Mute State Changed
13
Volume Changed
14
Volume Increasing
15
Volume Decreasing
16
Volume Stopped
17
Balance Changed
20
LCD Brightness Changed
21
Speaker Selection Changed
22
Headphones In / Out
23
A-BUS Input Source Changed
24
Bass Level Changed
25
Treble Level Changed
26
Direct State Changed
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Command Data
No Data
0 - Off, 1 - On
0 - Standby, 1 - On
0 - Mute Off, 1 - Mute On
00 to 72 - Volume Level
Note - For 840A V1 : 00:min, 72:max
For 840A V2 & 840E : 00:min, 96:max
No Data
No Data
00 to 66 - Volume Level
00 to 16 - Balance Level
Note - 00:max left, 08:neutral, 16:max right
0 - Off, 1 - Dim, 2 - Bright
0 - A, 1 - AB, 2 – B (840A V1 & V2 only)
0 - Out, 1 - In
1 - Input 1, 2 - Input 2, 3 - Input 3, 4 - Input 4,
5 - Input 5, 6 - Input 6, 7 - Input 7,
8 - Tape Monitor
00 to 30 - Bass Level
Note - 00:min, 15:neutral, 30:max
00 to 30 - Treble Level
Note - 00:min, 15:neutral, 30:max
0 - Off, 1 - On
Example
#4,02,\r - Main input 2 selected
#4,08,1\r - Tape monitor on
#4,11,0\r - 840A in standby
#4,12,1\r - Mute on
#4,13,15\r - Volume level now 15
#4,14,\r - Volume increasing
#4,15,\r - Volume decreasing
#4,16,20\r - Volume stopped changing at 20
#4,17,08\r -Balance is neutral
#4,20,1\r - LCD dim
#4,21,1\r - Speaker B selected
#4,22,1\r - Headphones inserted
#4,23,7\r - A-BUS input 7 selected
#4,24,15\r -Bass is neutral
#4,25,15\r -Treble is neutral
#4,26,1\r - Direct is on
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