axing HKM 40-02, Руководство пользователя

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By changing the FEC factor, the proportion of the FEC data is changed in relation
to the user data. (FEC ½ = low data rate but strong error protection, FEC 7/8 -
high data rate but low error protection).
⦁
In the
Guard Interval
field, select the protection interval from 1/32, 1/16, 1/8, 1/4.
This protection interval avoids the symbol overflow during DVB-T transmission.
The guard interval expresses the ratio of the transmission pauses to the useful
data transmission time. A very long protection interval (eg 1/4) leads to a very low
data rate. When transmitting in a faultless coaxial distribution network, a very
small protection interval is sufficient (1/32).
⦁
The
IQ swap
option enables or disables the inverse phase rotation of the IQ
signal by exchanging the I and Q inputs.
⦁
Click
Safe Settings
to save your settings.
⦁
Advanced RF settings
⦁
If necessary, enter the fine adjustment of the output channel in 10 kHz steps in
the
Frequency offset
field.
⦁
The
Output enable
option can be used to switch off the output signal.
⦁
The Single Tone option allows you to turn the Single Tone on or off.
⦁
Click
Safe Settings
to save your settings.
⦁
Video Source
⦁
On the main menu, click Video .
The settings for the video source can be made for each of the four input ports.
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