EMM Labs SWITCHMAN-3 - Manual (Page 11)

Appendix A
Wiring for ‘REMOTE’ DB9 connector on SWM-3 rear panel in remote
control applications via external MIDI devices
The SWM-3 can be remote controlled by either the included remote control or by
external controllers via the MIDI protocol. It is not possible to use both remote
control methods at the same time, since they both use the same connector
(REMOTE). The wiring is as follows:
External MIDI controller Direction REMOTE Connector on SWM-3
MIDI In: DIN Pin 4 (+5V Sink) Å------- MIDI Out: Pin 9 (+5V Source)
MIDI In: DIN Pin 5 (Signal Return) -------Æ MIDI Out: Pin 6 (Signal Source)
MIDI Out : DIN Pin 4 (+5V Source) -------Æ MIDI In: Pin 1 (+5V Sink)
MIDI Out: DIN Pin 5 (Signal Source) Å------- MIDI In: Pin 7 (Signal Return)
The remaining pins on the REMOTE connector should not be used:
Pin 2: not connected
Pin 3: GND
Pin 4: not connected
Pin 5: GND
Pin 8: DO NOT USE (12V power supply)
Note: The DB9 pin number sequence of the REMOTE connector is that which is visible
(with a magnifying glass) on the face view of the Female DB9 connector.
5 4 3 2 1
O O O O O
O O O O
9 8 7 6
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