| Parameter | Value | Explanation | 
|---|---|---|
| RX CHANNEL | This sets the MIDI channel used for receiving MIDI messages. | |
| CH1–CH16 | Specifies the receive channel. | |
| TX CHANNEL | Sets the MIDI channel used for transmitting MIDI messages. | |
| CH1–CH16 | Specifies the transmit channel. | |
| RX CH | Transmits on the same channel as the RX CHANNEL. | |
| MIDI IN THRU | This specifies the connector from which to output the MIDI messages that are received at the MIDI IN connector. | |
| OFF | MIDI messages are not transmitted. | |
| MIDI OUT | Messages are transmitted from the MIDI OUT connector. | |
| USB OUT | Messages are transmitted from the USB port. | |
| USB & MIDI | Output from the USB port and the MIDI OUT connector. | |
| USB IN THRU | This specifies the connector from which to output the MIDI messages that are received at the USB port. | |
| OFF | MIDI messages are not transmitted. | |
| MIDI OUT | Messages are transmitted from the MIDI OUT connector. | |
| USB OUT | Messages are transmitted from the USB port. | |
| USB & MIDI | Output from the USB port and the MIDI OUT connector. | |
| SYNC CLOCK | This setting determines the basis used for synchronizing the timing for effect modulation rates and other time-based parameters. 
 | |
| AUTO | Operations are synchronized to MIDI clock messages received via MIDI or USB. However, operations are automatically synchronized to the GX-100’s internal clock if the GX-100 is unable to receive the external Clock. | |
| INTERNAL | Operations are synchronized to the GX-100’s internal Clock. | |
| MIDI (AUTO) | Operations are synchronized to the MIDI Clock received via MIDI. However, operations are automatically synchronized to the GX-100’s internal clock if the GX-100 is unable to receive the external Clock. | |
| USB (AUTO) | Operations are synchronized to the USB Clock received via USB. However, operations are automatically synchronized to the GX-100’s internal clock if the GX-100 is unable to receive the external Clock. | |
| CLOCK OUT | Specifies whether MIDI clock will be output from the GX-100. | |
| OFF | MIDI clock is not output. | |
| ON | MIDI clock is output. | |
| NUM1 CC# NUM2 CC# NUM3 CC# NUM4 CC# BANK á CC# BANK à CC# EXP1 SW CC# CTL1 CC# CTL2 CC# CTL3 CC# CTL4 CC# EXP1 CC# EXP2 CC# | Specifies the controller number when transmitting pedal operations as control change messages. | |
| OFF | Control Change messages are not output. | |
| CC#1–CC#31, CC#64–CC#95 | Pedal operations are transmitted using the specified controller number. | |