Doepfer MTC64 Midi to Gate Interface (main board) - Manual (Page 2)

Page 2 MTC64 V2 User’s Guide
Electrical safety / EMC compatibility
MTC64 is a so-called OEM product (OEM original equipment manufacturer) that cannot be
used independently but has to be combined with additional electrical or electronical
equipment to become a working device (e.g. relays, LEDs, lamps, magnets, magnetic
valves, power supply, case/housing). The manufacturer of MTC64 does not know the final
assembly of the complete device in which the MTC64 is used as a part of the complete
device. The final responsibility with regard to electrical safety and electromagnetic
compatibility is up to the user who is assembling the complete device.
Please pay attention to the following items:
The power supply used in combination with the MTC64 has to be a closed type (in
Germany a power supply with VDE approval is required). Normally an AC adapter with
plastic case is used. It is not allowed to use open power supplies with open mains voltage
access (e.g. via mains lead, pcb tracks, electronic parts).
On the MTC64 electronics preventing measures against electromagnetic radiation are
met (RF filters at the power supply input and the MIDI lines). But it is impossible to estimate
to what extend the components added by the user affect the EMC properties of the
complete assembly. Therefore the complete device has to be shielded against
electromagnetic radiation (incoming and outgoing). These demands are normally met by a
closed metal case that covers the complete assembly. The metal case should be connected
to GND of the MTC64.
Warranty
• The maximum load for each MTC64 output is about one TTL load. If this is not sufficient
additional drivers have to be used (a suitable pc board with 16 transistor drivers is
available: MTC Output Board)
• Pay attention that only high impedance inputs ( > 1kOhm) are allowed to be controlled by
the MTC64 outputs. The inputs controlled by MTC64 have to be free of any voltage, i.e.
the inputs are not allowed to have any active voltage level (e.g. GND, +5V).
• Applying any voltage (including GND or +5V) to the 64 outputs (JP1, JP2, JP3, JP4) will
destroy the circuit. Especially it is not allowed to apply any negative voltage or positive
voltage above +5V to one of the MTC64 outputs. This will destroy the MTC64 electronics
in any case.
• Do not solder directly to any of the pin headers but use female connectors to make the
connections between the MTC64 and your application. We offer a suitable cable set that
contains all required connectors and cables. If there are solder remnants on any pin
header return of the unit is not possible and the warranty is void !
• Applying any negative voltage (< 0V) or positive voltage above +5V (> +5V) to the jumper
pin header (JP6) will destroy the circuit !
• Carry out all connections in the off-state of the MTC64 (i.e. without power supply) !
• The MTC64 electronics is an electrostatic sensitive device. Avoid any electrostatic
charges !
• Avoid short cuts !
• Ignoring any of these items will cause warranty loss !
• Return of the MTC64 within the 2 weeks return time limit (valid only in Germany) is only
possible if all these items have been met. Return of used cable sets is not possible.