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© Sealevel Systems, Inc. R91001 Manual | SL9211 11/2022
Appendix B – Relio R9 Internal Connector Reference
The following table details the connectors, jumpers, and test points located inside the Relio R9. To access
you will need to remove the cover of the Relio R9. The connectors, jumpers, and test points are labeled by
reference designator on the board silkscreen.
Reference Designator
Signal Description
P2
LCD, Backlight, and touchscreen controller
J6
RS-232 serial debug port
Jumpers
J1
Jumper - NAND Flash write protect
J2
Jumper - NAND Flash enable (Installed by default)
J4
Jumper - CAN Bus Termination (Installed by default)
J16
Jumper - Enable Push-button Reset (Installed by default)
Test Points
TP1
Test Point - Analog ground
TP2
Test Point - Received analog input
TP3
Test Point – Ground
TP4
Test Point – Ground