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Remote Control
The BAX-1 can be controlled and monitored through
a variety of mechanisms including TCP/IP when
connected to your local area network, USB, RS232,
and DC trigger.
Serial Protocol
The BAX-1 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
#
7
D2
C1
TCP/IP %23 7
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 "7" for BAX-1s, 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 (.)
Example:
#70MPWRQS<CR> command: query power status
BAX-1 Active DSP Crossover
Sleeve
Ground
... CR
C2
C3
C4
P1
P2
... .
C2
C3
C4
P1
P2
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
insert #, spaces, <LF>, <TAB> or other non-ASCII
characters inside the command string.
The following are selected commands most
pertinent to initial setup and everyday operation.
Find complete documentation by accessing the
BAX-1 web UI or by contacting Bryston.
Comm. Param.
Description
SDSP
Set DSP Parameters
QS or ?
Display list of all FILT
command options
FILTnnfffsggqq
select filter number nn(01...10),
set frequency ff (030...120Hz),
set filter gain or reduction, s=1 +,
s=0 for -
set filter gain gg (00...30, 0.1dB)
set filter Q factor qq (10...50, 0.1)
ex: #70FILT0305002530. for filter 3=50Hz,
-2.5dB, Q 3.0
FILTQS
Displays last settings as
above
FILTSAVE
Save filter values to EEPROM
FILTRECALL
Recall saved filter values
from EEPROM
DSRCxx
Set DSP source xx=00 for
analog inputs, 02 for sine, 04
for pink noise
MPWR
Switch between On and
Standby
00
Off (standby)
01
On
02
Toggle On/Standby
QS
Query Status
INIT
Re-initialize parameters
00
Re-initialize all but TCP/IP
01
Re-initialize all inclding TCP/
IP
11
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