Bryston SP3, Manual

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SP3 Control via RS232 & TCP/IP Page 5 of 7
2. Communication through RS232 port.
All commands described in the helpcmd.txt or helpcmd.htm file can be sent through the
serial port, receiving the response of up to 320 characters. It is recommended to test the
RS232 communication link using a PC running a serial terminal program, before
connecting to a dedicated controller box. An instruction on how to connect the serial
port on SP3 and a list of some commonly available third party freeware or shareware
terminal programs is in this document:
ftp://bryston.com/pub/firmware/sp3/doc/SP3_RS232_Notes....pdf
3. Communication through Ethernet port. TCP/IP HTTP-GET
a) Sending a command through URL and a browser.
Before testing this method, bring the SP3 virtual panel web page on screen to make sure
that the LAN connection is established. For example, type in an actual IP address
6
of the
SP3: http://169.254.1.1
Next, send an HTTP GET command directly, from a URL window of a browser or from
within a web-aware application supporting HTTP protocol. For example
7
:
http://169.254.1.1/cmd.cgi?cmd=%2310MPWR01 .
http://169.254.1.1/cmd.cgi?cmd=%2310MSRCQS .
Note: the hash character # must be replaced by the equivalent URL
encoding of %23 . The dot character at the end of the lines above is
significant and acts as the end-of-command terminator replacing the <CR>.
Above sequences passes commands from the host to SP3. In order to pass data in the
reverse direction, from the SP3 to host, type the following text into the URL window and
press Enter
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: http://169.254.1.1/status.xml
This will cause the SP3 system status data to be read from the SP3, including a response
from the previously sent control command (in this case MSRCQS), to appear in the main
browser window, for example:
6
The actual IP address can be viewed on the serial number screen displayed by pressing the left arrow
navigation key on the front panel or IR remote.
7
For the power up command to work over TCP/IP out of the standby state, Ethernet interface must be
enabled using Miscellaneous

ETHERNET IN STBY: ON setup. Default is OFF. To access that
parameter setup scroll down Miscellaneous menus then unlock the hidden screens pressing ZONE, DVD
and TAPE buttons in this order, or issue code 222 on the BR3 infrared remote. Only RS232 is always
enabled by default and works in standby state, although only MPWR and INFO commands are supported in
standby.
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The “Enter” key works only on desktop operating systems such as Windows7, MacOS etc. On tablets
running Android, iOS etc, one must tap CMD icon instead, in order to send a command.
APPENDIX K: SP3 CONTROL VIA RS232 & TCPIP continued