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3-6 Sun Netra CP3240 Switch Installation Guide • September 2009
3.1.11 P12(1-2) and P12 (3-4) EMI Ground to Logic
Ground
The switch and the entire AdvancedTCA shelf separate the ground of the chassis
itself from digital ground for EMI protection. This jumper configures the two
grounds.
3.1.12 P13 Serial Direction
The front panel serial port and the RTM serial port are mutually exclusive; only one
can be used at a time. The serial port can be forced to the front or the RTM, or it can
be controlled by the software.
TABLE 3-12 P12 (1-2) and P12 (3-4) Grounding Jumper Settings
P12
(1-2)
(3-4) Default Function
OFF Default Separate EMI ground and logic ground.
1-2 Connect EMI ground to logic ground.
3-4 Connect EMI ground to logic ground.
TABLE 3-13 P13 Serial Direction Jumper Settings
P13 Default Function
OFF Default Software control of serial direction.
1-2 Front serial port active; RTM serial port disabled.
3-4 Front serial port disabled; RTM serial port active.