Bryston SP3, Manual

Page: 59 / 72

SP3 PREAMP / PROCESSOR
SP3 Control via RS232 & TCP/IP Page 2 of 7
Examples (RS232):
#10MPWRQS<CR> command: query power status
#10MPWR00<CR> response: power is off (in standby)
#10MPWR01<CR> command: power up
#10MPWR01<CR> response(delayed): power is on
All characters preceding the # of a command, and following the
<CR> will be ignored. Do not insert #, spaces, <LF>, <TAB> or
other non-ASCII characters inside the command string.
When using TCP/IP, replace carriage return character with the dot
‘.’ character (except in the SP3 virtual front panel), and replace
hash # with the URL encoding of %23 .
Do not assume that the number of response bytes R1,R2,… is
always fixed. Allow up to 320 bytes to be read or until a <CR> is
encountered.
The format of the automatic responses is the same as the response
to a serial command sent with the parameter bytes P1 P2 = "QS".
All commands except MPWR and INFO are ignored and not
responded to when SP3 is in Power Standby state.
SP3 Bryston Serial Protocol commands can be found in an embedded help files:
http://sp3-<ser.num>/helpcmd.txt
3
or
http://sp3-<ser.num>/helpcmd.htm
or, in an on-line Bryston application notes folder:
ftp://bryston.com/pub/firmware/sp3/doc/
The current list of commands can also be displayed in an RS232 program terminal
window, on a host PC connected to SP3 serial port
4
, by issuing a single-character special
question mark command ? :
3
If you use a network connection ithout a server or router, type in the actual IP address instead of the “sp3-
<ser.num>”
4
Default baud rate is 9600bps, 1 start bit, 8 bits, no parity, 1 stop bit. A baud rate and a feedback selection
can be set by MISCELLANEOUS

RS232 BAUD and RS232 MODE parameters. Typing a ? is a
convenient way of testing the connection.
APPENDIX K: SP3 CONTROL VIA RS232 & TCPIP continued