User's Manual

AS4020 STs

Type 42

Type 42 Overview

Type 42

• P series for packet data/voice

• V series for voice

The main elements comprise:

• External Outdoor Unit with antenna (ODU)

• Internal Service Interface Unit (SIU)

• IF drop cable

• Type 7 PSU (for STs requiring battery back-up) or Type 6 socket PSU (for STs not

requiring battery back-up)

Outdoor Unit

The outdoor unit 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 direction of the CT antenna. The ST should be sited to avoid large obstructions in

proximity to and in line of sight from the ST to the CT antenna. See the ST installation and

commissioning manual for deployment rules.

The outdoor unit contains a flat plate antenna, Low Noise Amplifier (LNA) and Conversion of

incoming RF signal to IF. It connects to the IF drop cable using an F type connector. Power

for the LNA is provided via the drop cable.