Introduction; Application; General Notes; Inputs - SMART DPA 21 Bedienungsanleitung

Technische Daten
1

Introduction

The smart DPA 21 is an active unicable system with two satellite IF inputs and one Unicable output.
2

Application

The schematic drawings show the basic design of DPA 21systems.
Slot 2
Slot 1
Universal Twin LNB
QuadSwitch LNB
Current Consumption  150mA
Set-Top Boxes with Unicable compatible
Picture 1: Reception with LNB (without multiswitch)
2.1

General Notes


Use only high quality installation material. The coaxial cable should have a shield-
 ing factor of at least 90dB.
Seek advice from your distributor!

tion with poor cable shielding.

ACHTUNG!
2.2

Inputs

Connect the inputs of the device with two outputs of the external equipment (Universal Twin LNB or
Quad Switch LNB) or the multiswitch. Suitable are multiswitches with analog or DiSEqC 1.0 switch up to
eight satellite IF inputs.

The device is not intended for use with Quatro - LNB! The current consumption of

the LNB should be less than 150mA.

The multiswitch must have its own power supply (own PSU)! Remote powered
multiswitches must not be used!

2.3

Outputs to the Receivers

You can connect two receivers to the DPA 21 unit via a 2-way splitter. The splitter should be decoupled
with diodes.
6
Output
2-way splitter
decoupled
software
DECT cordless phones have a large transmission power, and may jam the recep-
Make sure that the outer conductor wires of the coaxial cable do not touch the
inner core (may cause a short circuit).
Picture 2: Reception with multiswitch
smart DPA 21