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Reference Guide: TT128x High Definition Professional Receiver/Decoder Page C-7
ST.RE.E10141.5
C.5.5 HOM Satellite Option Menu
When a Higher Order Modulation Input interface is used, the Input menu
allows the user to edit the HOM parameters.
Table C.7: HOM Satellite Menu
Display Title: Input Description
Quality
PV BER -1 -3 -5
XX.LX E-8 XXXXXXXXX XXXXX
XXXXXXXX
XXXXXXXXXXXXXXX is a bar-graph indicating the current level
(10 x
–1
to
–5
range)
Eb/N0
XXX.X dB
XXX.X is a measure of the signal to noise ratio (first X is + or -)
Select Source
Select Source X X is the EDITABLE input source selection 1, 2, 3 or 4
Source 1
LNB Frequency
XXXXX.X MHz
Sets the LNB frequency for Source 1. XXXXX.X is the LNB frequency in MHz
Satellite Frequency
XXXXX.X MHz
Sets the Satellite frequency for Source 1. XXXXX.X is the Satellite frequency in MHz.
Symbol rate
XX.XXXXXX Msymb/s
Sets the symbol rate for Source 1. XX.XXXXXX is the symbol rate in Msymb/s
Modulation FEC
XXXX XXXX
XXXX sets the modulation type (QPSK) and XXXX the FEC (1/2, 2/3, ¾, 5/6, 7/8) for
Source 1. The FEC selection is limited to the valid values of the currently selected
modulation type. For AUTO FEC, the Receiver searches for and locks to the correct
FEC rate for the received carrier.
Input Gain
XXXX
Sets the input gain of the HOM card.
Where XXXX is either LOW or HIGH
Roll Off
XXX
Roll off of the input.
Where XXX is either 20% or 35%
Spectrum Sense
XXXXXX
Spectrum sense of the incoming signal.
Where XXXXXX is either NORMAL or INVERTED.
LNB Power XXXXXXX
At YYY
XXXXXXX sets the LNB power for Source 1 (ON, OFF, BOOSTED) BOOSTED
provides 1V extra power over the ON setting.
YYY selects the rating of the power output (18v – Horiz, 13v – Vert)
LNB 22 kHz
XXXXXXXX
XXXXXXXX enables or disables LNB 22 kHz control tone for Source 1. (On, Off)
Search range
XXXXX kHz
Sets the centre frequency search range for Source 1. XXXXX is the search range in
kHz
Source 2 Same Sub-Menus as for Source 1
Source 3 Same Sub-Menus as for Source 1
Source 4 Same Sub-Menus as for Source 1