Doepfer USB64 Universal Midi and USB Controller Electronics Kit - Manual (Page 16)

Page 16 User's Guide V1.3 USB64
Mounting
Before USB64 is put into operation the board has to be fixed on a suitable support and built into
a metal case together with the controls (refer to EMC notes on page 3). The metal case has to
be connected to GND of USB64. We recommend to use the metal plate of the voltage regulator
7805/IC12 or the GND terminal of the power supply socket for this connection.
The board measures about 159 x 53 x 25 mm. Four mounting holes with 3 mm diameter are
available for mounting the board inside the case e.g. with distance sleeves or spacers (> 5 mm
in length) and suitable screws. Pay attention that no short circuits are made – neither on the top
of the board (electronic parts) nor on the bottom (solder points or pcb tracks). In case of doubt
use isolating plastic parts (e.g. plastic screws, nuts and washers) for mounting.
Important remark: On the bottom of the board below the USB socket are the connections of the
USB interface, i.e. the USB data and supply terminals. Pay attention that no short circuit of
these pins is made as this may destroy the computer connected to the USB64 or the USB hub.
Remove any kind of conductive parts (e.g. screws, nuts, washers or any other metallic part)
before you connect the USB64 to your computer.