Installation guide

Site Requirements
20
890USE17100 September 2003
Preferred
Modules
An island bus can support auto-addressable preferred modules as well as Advantys
STB I/O modules. Preferred modules are not mounted in segments.
A preferred module can be connected to an Advantys STB segment via an
STB XBE 1000 EOS module in the segment and a length of STB XCA 100x bus
extension cable. As the illustration below shows, preferred modules can also be
chained together in series along the island bus, connected by STB XCA 100x bus
extension cables.
1 The primary segment
2 The NIM
3 An STB XBE 1000 EOS bus extension module
4 A 1 m length of STB XCA 1002 bus extension cable
5 The first preferred module
6 A 0.3 m STB XCA 1001 bus extension cable
7 The second preferred module
Each preferred module is equipped with two IEEE 1394 connectors, one to receive
the island bus signals and the other to pass them on to the next module in the series.
Preferred modules are also equipped with 120 Ω termination, which can be enabled
in the event that module is the last device on the island bus.
1
2
4
6
5
7
3