SM500A—Automatic Switching System
Black Box Corporation
20
990-000-0001-E8
Figure 3.2. Jumpers on Switching Interface Cards, Double Channel
2. Install Switching Interface Cards in Chassis(s):
Install the Interface Cards into the chassis, slots 1-16, fastening each card into place with
the supplied screws (figure 2.2).
3. Power Supply/Control Card setup (applicable to SM531-C and SM532-C)
Using the bank of jumpers (figure 3.3), set up the Power Supply/Control Card to perform
one of the following three types of control:
1. Chassis gang switch control
—JP1 to JP5 in position 1-2. The “GANG” toggle switch
provides the capability to perform gang switching on chassis level.
NOTE: To perform any local switching functions, the key-operated switch must be in the
ENABLE position.
2. Chassis and system gang
switching—JP1 to JP3 in position 1-2, JP4 to JP5 in
position 2-3. While pressing and holding “SYSTEM GANG” pushbutton and then
toggling the “GANG” switch, switching is extended to the entire system. All the Power
Supply/Control Cards must be interconnected using RJ-11 cables at the “GANG
IN/GANG OUT” ports to perform system gang switching.
