Tascam SX-1 Release Note page 50

On a valid (meaning one that exists) MIDI track, select Add SysEx from the Edit Operation
pulldown menu. You will see this the first time you open the Op:
The Time field allows you to determine the placement in time of your System Exclusive message. The
SysEx Data field allows you to enter a System Exclusive message.
The value shown in the SysEx Data field the first time the Op is used is F0F7 . This is because the
first set - F0 - tells a connected MIDI device that the following message is System Exclusive, and the
other set - F7- tells the connected MIDI device that the System Exclusive message has finished
transmitting. Thus, any message you create must start with F0 and end with F7 to be a valid SysEx
message.
NOTE: It is possible to enter garbage in between the start and end bytes (F0 and F7), because the SX-
1 doesn t have any way of checking the data contained within them for authenticity. That means an
incorrect message could theoretically confuse a connected MIDI device.
Therefore, do not enter and store SysEx messages unless you are familiar with the message to be
entered, the desired resulting behavior, and SysEx in general.
Also, the SX-1 will search each new SysEx data string after it is created, and will discard any string
that is not at least four characters long (because the minimum for any message is F0 and F7, at the very
least).
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