Instruction manual

FUNCTIONAL DESCRIPTION
● Emergency Transfer Unit (ETU) Control
Removes -48 V dc power from the ETUs of the system when the system loses power
or a major system malfunction occurs.
● Bus Terminators
These resistors are required for proper operation of the TDM bus. The CPU/MEM
CP provides the proper termination for one end of the bus, and a plug-in TDM bus
termination circuit card (plugs into cabinet backplane) is used to terminate the other
end. For this reason, the CPU/MEM CP must always be located in slot #1 of
Cabinet 1.
3-5