3
then it is possible that the attached device is not class compliant, however you could try turning off the
power and start again.
If you are having difficulty note that some USB MIDI devices have two modes of operation and can be
set to operate in Class Compliant mode even if this is not the default. The Class Compliant mode
might
be called “generic driver”, the other mode may be called something like “advanced driver”.
Consult the device manual to see if the mode can be set to Class Compliant.
If you unplug then re-plug the USB cable connected to the device while it is powered, the device
should reconnect but it is not certain.
Power
The supplied multi-region power adaptor will operate over a wide range of mains input voltages and is
consequently suitable for use in most parts of the world. You can also power the MIDI USB Host from
a USB power bank for portable use. Check the power bank can supply enough current for both the
MIDI USB Host itself and any USB device you have plugged into it.
Notes
1) Merge mode 2 (Red LED) should be used with caution. If your USB MIDI device echoes the USB
MIDI it has received to its USB output you will then have two copies of the MIDI received at the MIDI In
socket appearing at the MIDI Out.
2) You can use the MIDI USB Host mk3 with a USB Hub in order to connect up to four USB devices to
the MIDI USB Host. We recommend using a powered hub (one with its own power supply).
3) Using an attached USB Hub you can also connect two or more USB devices to each other by
plugging them both (all) into the hub. In order to connect the input and output busses together you
need to plug a MIDI lead from the MIDI In to the MIDI Out of the MIDI USB Host.
Firmware version Request & Update
:
You can send a SysEx message to request the version number of the firmware currently installed in
the unit. The SysEx message must be sent to the MIDI IN port (5 pin DIN).
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 13 6F 31 32 33 34 F7 (hex) = version number 1234
From time to time, firmware updates may appear on our website. Full instructions for updating are
included in a readme file inside the ZIP file you can download.
