COBHAM SOLO4 Especificações descarregar pdf (Página 46)

Narrow Band FEC

This option applies to SOLO4 transmitters only. The default FEC is 2/3,

however improved range operation can be achieved by selecting FEC

1/3. FEC 1/3 will improve signal range by 3dB. However FEC 1/3

reduces link capacity to 1.2Mb/s therefore reducing picture quality.

FEC

Link Bitrate

Sensitivity

2/3

2.4Mb/s

-99dBm

1/3

1.2Mb/s

-102dBm

Narrow Band Guard Interval

This option applies to SOLO4 transmitters only. The Guard Interval

defaults to 1/16. Interval 1/8 is also available for very long range

(aircraft downlinks) applications.

Narrow Band Modulation

This option applies to SOLO4 transmitters only. The COFDM mode can

be changed between QPSK and 16QAM. QPSK is the default mode

and will give the strongest most rugged RF link performance. Selecting

16QAM reduces the link performa

nce by 5dB but improves the link data

throughput, giving significantly better video quality.

Note: The terminology DVB-T refers to the 8,7,6MHz wide bandwidth modulation

employed in the SOLO2 products. The SOLO4 product is also capable of DVB-T, but this

mode is not recommended for normal operation

DVB-T Service Name

Applicable in DVB-T mode only, defaults to Unit 1. This should not be

changed in normal operation

DVB-T FEC

Applicable in DVB-T mode only, the default FEC is _. Other FEC rates

will all reduce the range of the product, but will improve image quality

and capacity of the link.

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COBHAM SOLO4 Especificações Página 46