User Manual

AS4000 Subscriber Terminal
Installation and Commissioning
GSI 002
605-0000-454
Draft Issue 1.3 Date 8/02/00
Page 3 of 14
3. The Subscriber Terminal – Internal Service Interface Unit
The majority of the electronics is in Service Interface Unit located inside the
customer premises, the outdoor radio unit includes only the antenna and a RF front
end. The SIU is connected to the outdoor unit by an IF drop cable.
Antenna
I/F Drop
Cable
Phones
Service
interface
Unit
Note The appearance of the
Service interface Unit depends
on the series (ST- R2 shown)
Power
Supply
Unit
Figure 1. Subscriber Terminal
The main elements, (see Figure 1) comprise:
• External Antenna
• Internal Service Interface Unit
• IF Drop Cable
• Type 5 PSU (B,L,N series requiring battery back-up) or Type 6 Socket PSU
(for R and S series and B,L,N series not requiring battery back-up)