5
System Command Specifications
Power (0x00)
Request the stand-by state of a zone.
Example
Command/response sequence to request the power state of zone 1 where
zone 1 has power on:
Command:
0x21 0x01 0x00 0x01 0xF0 0x0D
Response:
0x21 0x01 0x00 0x00 0x01 0x01 0x0D
Display Brightness (0x01)
Request the brightness of the front panel display.
Example
Command/response sequence for requesting the brightness of the display
where the display is off:
Command:
0x21 0x01 0x01 0x01 0xF0 0x0D
Response:
0x21 0x01 0x01 0x00 0x01 0x00 0x0D
Headphones (0x02)
Determine whether headphones are connected.
Example
Command/response sequence to request the headphone status where the
headphones are not connected:
Command:
0x21 0x01 0x02 0x01 0xF0 0x0D
Response:
0x21 0x01 0x02 0x00 0x01 0x00 0x0D
COMMAND:
Byte:
Description:
St
0x21
Zn
0x01
Cc
0x02
Dl
0x01
Data
0xF0 – Request current headphone connection status
Et
0x0D
RESPONSE:
Byte:
Description:
St
0x21
Zn
0x01
Cc
0x02
Ac
Answer code
Dl
0x01 (Data length)
Data
0x00 – Headphones are not connected.
0x01 – Headphones are connected
Et
0x0D
COMMAND:
Byte:
Description:
St
0x21
Zn
0x01
Cc
0x01
Dl
0x01
Data
0xF0 – Request brightness
Et
0x0D
RESPONSE:
Byte:
Description:
St
0x21
Zn
0x01
Cc
0x01
Ac
Answer code
Dl
0x01
Data
0x00 – Front panel is off
0x01 – Front panel L1
0x02 – Front panel L2
Et
0x0D
COMMAND:
Byte:
Description:
St
0x21
Zn
Zone number
Cc
0x00
Dl
0x01
Data
0xF0 – Request power state
Et
0x0D
RESPONSE:
Byte:
Description:
St
0x21
Zn
Zone number
Cc
0x00
Ac
Answer code
Dl
0x01
Data
0x00 – Zone is in stand-by
0x01 – Zone is powered on
Et
0x0D
