Volume (0X0D); Mute/Unmute (0X0E) - Arcam SA20 Custom Installation Notes

Volume (0x0D)

Set or request the volume of a zone.
This command returns the volume even if the zone requested is in mute.
The "Request Mute status" command can be used to discover if the zone is
muted.
Response data format:
e.g. for volume 45dB: Data=0x2D (45)
Example
Command/response sequence for setting the volume in Zone 1 to 45dB:
Command: 0x21 0x01 0x0D 0x01 0x2D 0x0D
Response: 0x21 0x01 0x0D 0x00 0x01 0x2D 0x0D

Mute/unmute (0x0E)

Set/Request the mute status of the output.
Example
Command/response sequence for requesting the mute status of output
where the result is unmuted:
Command: 0x21 0x01 0x0E 0x01 0xF0 0x0D
Response: 0x21 0x01 0x0E 0x00 0x01 0x02 0x0D
8
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0D
Dl 0x01
Data 0x00 (0) – 0x63 (99) – Set the volume
0xF0 – Request the current volume
0xF1 – Increment volume by 1 step
0xF2 – Decrement volume by 1 step
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0D
Ac Answer code
Dl 0x01
Data Zone volume, integer value:
0x00 (0) – 0x63 (99)
Et 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0E
Dl 0x01
Data 0x00 – Mute
0x01 – Unmute
0x02 – Mute toggle
0xF0 – Request mute status
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0E
Ac Answer code
Dl 0x01
Data 0x00 – Muted
0x01 – Unmuted
Et 0x0D