COBHAM H264ENC Guia do Utilizador descarregar pdf (Página 88)

SOLH264TX Broadcast Transmitter

H264TX, H264ENGTX, H264ENC

UNCLASSIFIED

Part A - User Guide

DS000091

Rev 1.2 2013-05-02

UNCLASSIFIED

Page 10-78

Unit Parameter

Options

Notes

Audio encoder

Off

MPEG L1 48kHz stereo

MPEG L1 48kHz mono

MPEG L2 48kHz stereo

MPEG L2 48kHz mono

You can select one of many modes to suit

operational and bandwidth requirements.

As you select each of these audio modes and

apply them, take a look at the Video bitrates

parameter and watch it change.

The higher the audio quality used the less the

video bandwidth available.

Audio source

Digital Embedded

Analogue

You can select analogue or digital for the

audio input of the device.

If you are an analogue video input only

analogue audio will be available.

MPEG Audio rate

(MPEG L1)

64, 96, 128, 160, 192,

224, 256, 288, 320,

352, 384, 416 and

448kbits/s

This is the MPEG audio encoding bit-rate.

Generally the higher the number the better

the quality.

MPEG Audio rate

(MPEG L2)

48, 56, 64, 80, 96,

112, 128, 160, 192,

224, 256, 320 and

384kbits/s

This is the MPEG audio encoding bit-rate.

Generally the higher the number the better

the quality.

Note: Bit-rates 224, 256, 320 and 384kbit/s

are only available in stereo mode.

Audio input level

0db, 12db, 24db,

36db, 48db, 60dB,

72dB, 84dB, 96dB,

108dB and 120dB

Used to set the audio gain applied to the

audio input signal.

0db is no gain which is the default setting. If

you have low level audio sources you may

want to apply more gain.

Mic input bias

Checked or unchecked

Applies a small voltage to the audio inputs to

supply phantom power for Electret

microphones. This will be 5V on SOLH264TX

units and 12V on SOLH264ENGTX units.

10.8 Configuring the Video Parameters

To work with the Video tab:

1. Click the Advanced button on the SOLO4 Transmitter Control Window

2. The Advanced options window opens

3. Select the Video tab

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