User Manual

Demand Assignment
System Overview GSI 002
605-0000-450
Draft Issue 1.3dr Date 8/02/00
Page 12 of 16
4.1. The Subscriber Terminal Installation
The majority of the electronics is in Service Interface Unit located inside the customer
premises. This is connected to the outdoor unit by an IF drop cable.
Internal ST
(ST-R, S, B, N and M classes)
Antenna
I/F Drop
Cable
Phones
Service
interface
Unit
Note The appearance of the
Service interface Unit depends
on the class (ST- R2 shown)
Figure 5. Internal Subscriber Terminal
The main elements, (see Figure 5) comprise:
• External Antenna
• Internal Service Interface Unit
• IF Drop Cable
• Type 5 Socket PSU
4.2. Antenna
The antenna is a sealed weatherproof unit that is mounted on the outside of the
customer’s premises. The unit is normally positioned on an outside wall or a mounting
that faces the general direction of the CT antenna. The ST should be sited to avoid