COBHAM H264ENC Guía de usuario descargar pdf (Pagina 51)

SOLH264TX Broadcast Transmitter

H264TX, H264ENGTX, H264ENC

UNCLASSIFIED

Part A - User Guide

DS000091

Rev 1.2 2013-05-02

UNCLASSIFIED

Page 7-41

7. Setting up your Transmitter

7.1 General

These guidelines will help you install and set up your system. As a general rule we connect in

order:

 Antennas

 Signals

 Power

7.2 Connecting Antennas

Each SOLH264TX unit requires one antenna. The antenna must be fitted before the unit is

placed into RF mode.

7.2.1 Assembling the Antenna System

SOLH264TX units normally use simple Omni-antennas and do not require any rigging.

Naturally, it is possible to use a variety of antenna types for specialist applications. Discuss

this with your Cobham representative.

7.2.2 Attaching the Antenna

You’ll need a SOLH264TX and one antenna. An ANT2-200250, 2dBI flexi SMA mount

antenna 2.00 to 2.50GHz would be a typical example for an S-Band variant.

1. Connect the antenna to the SMA jack on the top panel of the transmitter unit.

2. Do not over tighten the antenna – hand tight only!

SOLH264ENGTX Variant: This variant uses an N-Type connector for its antenna.

CAUTION: Antennas should be connected directly to the unit. If you have to use cables

between the antennas and the SOLH264TX (in a mobile application for example), keep them

short and use very high quality cable.

Note: There are many types of antenna that can be fitted to the SOLH264TX unit. Your

antennas may look different from those in this guide. For more advice on antenna types call

your Cobham representative.

7.2.3 Antenna Polarization

COFDM links are very robust and are tolerant to changes in antenna position, however, it is

important to try and keep the antennas in the same plane if possible.

The antennas used with the COFDM links are normally linearly polarized.

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COBHAM H264ENC Guía de usuario Pagina 51