Radyne QAM256 Bedienungsanleitung Seite 129

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NMS-4000
Network Management System
P/N 2349-72712-01 Page 6-5
Table 6-1: Configuration/Receiver Menu Options
DSNG
QPSK
QAM
ATM
G.703
OPTION DESCRIPTION
þ
þ
LNB 22 KHz LNB 22 KHz Selector
Turns ON and OFF the 22 KHz LNB. This action
determines the band selected (ON = High Band, OFF = Low
Band). In addition, the selection of the LNB Power Supply
determines the polarization of the antenna. The following
table shows the correlation between the LNB parameters:
LNB Power Supply
LNB Polarization
LNB 22 KHz LNB Band
OFF Low Band
14V / Vertical
Polarization
ON High Band
OFF Low Band
18V / Horizontal
Polarization
ON High Band
NOTE
In the Ku/C band mode, the LNB 22KHz converter
setting is performed automatically and the LNB 22
KHz Receiver Configuration function is not displayed
in the Receiver Configuration Menu.
þ
þ
þ
Symbol Rate
(KBaud)
Symbol Rate Setup
The Symbol Rate for a group of station programs is
configured according to the broadcast program parameters
and the specific ranges available in your IRD.
The available Symbol Rate range is:
QPSK and DSNG 1-45 configuration: 1 to 45 Mbaud/sec.
QAM configuration: 1 to 7.2 Mbaud/sec.
If the Bit rate information is provided but no Symbol Rate
information is given, the Symbol Rate may be calculated by
the equations provided in Appendix B.
NOTE
It is important to input the Symbol Rate accurately,
including all the decimal places that are given.
þ
þ
Viterbi Rate Viterbi Rate Select
This parameter is configured according to the information
provided from the broadcast head end.
Available Options: ½, 2/3,3/4, 4/5.
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