SM500A—Automatic Switching System
Black Box Corporation
9
990-000-0001-E8
System gang switching—
this function switches simultaneously all the chassis in a system
and is enabled via jumpers on the Power Supply/Control Card. It is performed by toggling the
GANG switch while pressing the SYSTEM GANG button on the chassis front panel. System
gang switching can be initiated from multiple chassis and is enabled/disabled by turning the
key-activated switch on the front panel of the chassis that is initiating the switching. The
key-operated switch positions on the remaining interconnected chassis are disregarded.
Remote system gang switching
—this switching function is initiated from a contact closure
applied to the CONTACT CLOSURE SWITCHING connector located on the Power
Supply/Control Card or Advanced Control Card. It will simultaneously switch an entire
system. This function is independent of the key-activated switch position on the front panel of
all chassis.
