This module is used as the MIDI option in most 19” rack gear.
It has three TRS jacks for connecting to remote equipment (Footswitch, MIDI input, MIDI output).
MIDI is received in three bytes, where the address is sent first, followed by the function and status.
The MIDI address can be set using 5 dip switches (A4..A0).
The first bit (A4) selects between a note-on channel or a control change channel.
The remaining 4 switches define the address of the note / CC range.
Address range (Note): 90..9F
Address range (CC): B0..BF
Left channel: 0x0
Right channel: 0x1
Swap channels: 0x2
Per example:
[0xB0, 0x0, 0x0] bypasses the left channel / effect on CC channel 0
[0x91, 0x1, 0x1] enables the right channel / effect on note change 1
The mode and operation can be set using 3 dip switches.
Footswitch latch / momentary
LED mode (3x / 2x - depends on the number of indication LEDs connected)
Button mode (swap / stereo):
Swap the left and right channel on pressing the ‘inactive’ button, or bypass the effect.
Enable / bypass the left or right effect based on the selected button.