Remote Control; Serial Protocol - Bryston BCD-3 Owner's Manual

Remote Control

The BCD-3 can be controlled and monitored
through a variety of mechanisms including TCP/IP
when connected to your local area network, USB,
RS232, DC trigger, and IR.

Serial Protocol

The BCD-3 can receive commands and can send
responses to each command. It can also (optionally)
broadcast automatic responses to certain system
events such as front panel button presses.
Commands can be sent over RS232, RS485 (with an
RS232 to RS485 interface) and TCP/IP using HTTP
cmd.cgi.
The RS232 input is a 3.5mm mini-jack configured as:
Tip Ring
Transmit Receive
Command Format
RS232 # 5 D2 C1
TCP/IP %23 5 D2 C1
The command format always begins with a
command start character.
The next two digits are the Device ID. The first of
which is always "5" for BCD-3s, and the second
will be "0" except when using RS232/RS485 in a
multi-drop configuration.
Next are C1 through C4 which comprise the
command name. These are typically uppercase
ASCII letters.
Following the command name are the arguments
or parameters for that command. These are two
or more ASCII characters.
The command is always terminated with a
carriage return character. For RS232, this is ASCII
code 13. TCP/IP commands are terminated with a
period (.)
Responses are returned in the same format as
commands. Note that responses may contain up
to 320 characters. All characters preceding the # or
%23 and following <CR> or . are ignored. Do not
6
Sleeve
Ground
... CR
C2 C3 C4 P1 P2
... .
C2 C3 C4 P1 P2
insert #, spaces, <LF>, <TAB> or other non-ASCII
characters inside the command string.
Example of power up
command in RS232:
#50MPWR01<CR>
The following are selected commands most
pertinent to initial setup and everyday operation.
Find complete documentation by accessing the
BCD-3 web UI or by contacting Bryston.
Comm. Param. Description
Display Brightness
BRIG
00 Display Off
01 Brightness Level 1 (dimmest)
02 Brightness Level 2
03 Brightness Level 3
04 Brightness Level 4
05 Brightness Level 5
Switch between On and Standby
MPWR
00 Off (standby)
01 On
02 Toggle On/Standby
QS Query Status
Transport controls
MCTR
00-09 Numeric 0-9 - used for direct
track access.
EJ Drawer open/close toggle
RE Reverse search
PT Previous track
FO Forward search
NT Next track
TI Change time mode display
ST Stop
RP Toggle Repeat track, disc, off
PA Pause
SH Random (Shuffle)
PL Play
SC Scan
BA Go back 10 seconds
SK Skip
Example of power up
command in TCP/IP:
%2350MPWR01.