GSS HDTV 1000 T, Руководство по сборке

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Setting the output signal
Ê ˜ÊÌ ˆÃʓi˜Õ]ÊޜÕÊV>˜ÊÃiÌÊÌ iÊL>˜`܈`Ì ]ÊÌ iÊV>ÀÀˆiÀʓœ`Տ>̈œ˜Ê>˜`ÊÌ iÊëiVÌÀ>Ê
position of the output signal.
Bx 4A
8MHz QAM64 COFDM-MODE
POS
Bandwidth of the output signal
To transmit the output signal in the channel range of C21 to C69 a bandwidth
œvÊnÊâÊV>˜ÊLiÊÕÃi`°
In the channel range of C5 to C12 a bandwidth of
”
ÇÊâʓÕÃÌÊLiÊÃiÌ°
If frequency setting is selected you can set the bandwidth dependent on the
frequency of the adjacent channel.
Bx 4A
8MHz QAM64 COFDM-MODE
POS
Ê UÊ Use to set the bandwidth of the output signal (“ 5 MHz ” oʺ 8 MHz ”).
Carrier modulation
In this menu item the carrier modulation is set. At this the setting “ QPSK ” cor-
responds to the lowest and the setting “ QAM64 ” to the highest output data
rate.
Ê U Use the buttons to place the cursor under ” QPSK / QAM… ”.
Ê UÊ -iÌÊ Ì iÊ V>ÀÀˆiÀÊ “œ`Տ>̈œ˜Ê œvÊ Ì iÊ œÕÌ«ÕÌÊ Ãˆ}˜>Ê ÕȘ}Ê Ì iÊ buttons
(“ QPSK »]Ê “ QAM16 »] “ QAM64 ”).
Inverting the user signal
Ê œÀÊiÝVi«Ìˆœ˜>ÊV>ÃiÃÊ>˜`ʺœ`iÀ»Ê`ˆ}ˆÌ>ÊV>LiÊÀiViˆÛiÀÃ]ÊÌ iÊëiVÌÀ>Ê«œÃˆÌˆœ˜Ê
of the user signal can be inverted “ NEG ”. The default setting is “ POS ”.
Ê UÊ 1ÃiÊ to place the cursor under “ POS ”.
Ê UÊ 1ÃiÊ to set the spectral position to “ NEG ”.
Ê UÊ *ÀiÃÃÊÌ iÊ button.
—> The “Setting the transmission parameters” – “ COFDM-MODE ” menu is
activated.