Lightwave Communications Switch 8200 Manual Do Utilizador

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8
2.5 Connecting Multiple ServerSwitches 
In each cascade, there is a master unit, and one or more auxiliary units.  The users are 
directly attached to the master unit, and can control and access all the auxiliary units 
through that master unit.  There may be up to 9 auxiliary units in a cascade along with 
one master unit, allowing the two users to control 80 CPUs. 
 
To connect several ServerSwitches in a cascade, first select the unit that will be the 
master unit.  The monitors and keyboard/mouse sets for the users will be directly 
attached to this unit.  Be sure that the monitors are identical or at least have compatible 
operating modes, as user B will most likely not be able to use his monitor if the monitors 
are incompatible. 
 
Attach a DB9 serial data cable to the CONTROL OUT port on the back of the master 
unit.  Be sure to secure the cable to the port using the screws on the cable.  Attach the 
serial data cable from the master unit to the CONTROL IN port on the first auxiliary unit 
in the cascade, and secure the cable to the port.  Attach the serial cable from the 
CONTROL OUT port of the auxiliary unit closest to the master in the cascade (the 
upstream unit) to the CONTROL IN port of the auxiliary unit further away from the 
master in the cascade (the downstream unit), and repeat until all units in the cascade 
are connected.  The last unit in the cascade will only have a serial cable attached to the 
CONTROL IN port. 
 
 
Cable connections to a cascade master unit