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attached USB device as the 5V is passed on to the attached USB device for buss power. There is
protection circuitry inside the MIDI USB Host to protect against reverse polarity and over-voltage, but
these should be treated as a last resort and are not guaranteed to prevent damage to an attached USB
device in the event of over-voltage as the USB buss voltage could rise to 6.5V before being clamped.
Care should be taken to ensure that power adaptors for other pieces of equipment are not accidentally
plugged into the MIDI USB Host.
If the input voltage rises above 6.5 volts then power will be shut off. The LED will go out and the unit
will not operate again until power has been removed for at least 60 seconds. This allows time for the
thermal fuse to reset.
Firmware version Request
:
You can send a SysEx message to request the version number of the firmware currently installed in
the unit.
The firmware version request message is - F0 00 20 13 13 60 F7 (hex)
The unit replies with the version number as F0 00 20 13 13 6F xx xx xx xx F7 (hex).
Where xx is a number in ASCII and the leftmost digit is the most significant.
For example - F0 00 20 13 0E 6F 31 32 33 34 F7 (hex) = version number 1234
