Chapter 10
Installation and Operation
©
National Instruments Corporation
10-3
Shield Selection
The SC-2050, SC-2051, SC-2052, SC-2053, SC-2054, and SC-2055
adapters have one jumper, W1, shown in Figure 10-3, for an optional
connection from the board ground to the rack-mount chassis.
Figure 10-3.
Shield Jumper Location
Setting jumper W1 to the position labeled SHLD connects the SC-2050,
SC-2051, SC-2052, SC-2053, SC-2054, and SC-2055 ground to the four
metal standoffs. If the adapter is installed in the 19-in. rack, this setting
grounds the adapter to the rack. Setting jumper W1 away from the position
labeled SHLD disconnects shielding and isolates the ground from the rack.
The SC-2050, SC-2051, SC-2052, SC-2053, SC-2054, and SC-2055 are
shipped from the factory with the jumper W1 set to the position away from
SHLD, so shielding is disabled. Jumper W1 settings are shown in
Figure 10-4.
Figure 10-4.
Ground Settings for Jumper W1
J2
J1
SHLD
W1
Shield Jumper
SHLD
Shield Disconnected
SHLD
Shield Connected