Sun Microsystems CP3240 11 P121-2 and P12 3-4 EMI Ground to Logic Ground, 12 P13 Serial Direction

3.1.11P12(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.

TABLE 3-12P12 (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.

3.1.12P13 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 3-13P13 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.

3-6Sun Netra CP3240 Switch Installation Guide • September 2009