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8 x 2A Dual Stereo Audio Switcher Installation Manual
Broadcast Tools, Inc.
Note that the menu mode does NOT allow overlapped commands to be entered. If in
overlap mode, it will still behave as if in interlock mode (change will occur when Q is entered).
Note that after 25 seconds of no activity, the system will behave as if a Q had been entered.
Burst Mode Command Protocol
A burst mode command must be sent within 5 seconds. It starts with an asterisk
(*), then has the command codes, and is followed by a carriage return. Burst mode
commands may be answered by an optional "OK" response from the unit, and error
response, or a status response if requested.
If a password is in effect, each burst mode command must be preceded by a
password string. (see example)
Syntax of burst mode commands is (<cr> is a carriage return, <lf> is line feed),
<xxxx> is a single character described by xxxx:
*BR24<cr> - Set baud rate to 2400 (kept in EEPROM).
*BR96<cr> - Set baud rate to 9600 (kept in EEPROM).
*M<cr>
- Mute (turn off all outputs).
*E<cr>
- End Overlap. If in overlap mode, previously connected channels
will not be disconnected until this command is received.
*Q<cr>
- End communications.
*S<cr>
- Requests that a status response be sent from the unit.
*L<cr>
- Lock the front panel.
*U<cr>
- Unlock the front panel.
*O<cr>
- Cause each burst mode command to be answered with an OK<cr><lf>
from the unit.
*N<cr>
- Do not answer burst mode command with an OK string.
*<input_channel><output_setting><status_request><cr> - Set audio outputs
<input_channel> is the input channel number 1-8
<output_setting> is what to connect the input channel to:
1 - Connect input channel to output channel 1
2 - Connect input channel to output channel 2
B - Connect input channel to both output channels 1 & 2
0 - Disconnect input channel from both output channels
<status_request> is "1" if a status response is requested
