Specifications CBI/CGI Technical Reference
Chassis Plans1-14
CONFIGURATION
JUMPERS
(CONTINUED)
Jumper Description
JU13 SCSI Termination Enable (not available on BASIC models)
Install to disable on-board active termination for the SCSI
interface.
Remove to enable active termination. *
JU14 Fan Speed Monitor
This jumper must be removed (disabled).
JU15 3.3V Monitor Enable
Install to enable the 3.3V monitor.
Remove to disable the monitor. *
NOTE: On SBCs with revision L-07 and later, the position of
this jumper is horizontal; on earlier revisions it is vertical.
__________________________________________________
NOTE: JU15 enables the 3.3 volt monitor, which monitors
the 3.3V power plane of the backplane. This voltage is routed
to the SBC via the PICMG connector. The monitor generates
a RESET to the SBC if 3.3V is below tolerance. If your
system does not supply 3.3V to the backplane, this jumper
must be removed (disabled).
__________________________________________________
JU16 Watchdog Timer
Install on the LEFT for normal reset operation. *
Install on the RIGHT to enable watchdog timer operation.
JU18 Combo I/O (P5A) Reset Connect
(Also refer to JU7 - Combo I/O Speaker Connect.)
Install to connect reset data signal to pin 1 of the Combo I/O
connector (P5A). *
Remove to disconnect.
JU19 SCSI Activity LED Enable (not available on BASIC models)
Install to light the hard drive LED for SCSI drive activity. *
Remove if you do not have a SCSI drive (i.e., the SCSI
controller is not being used).