LNB Input / Setup and Programming
7
LNB INPUT AND LNB POWERING
The SCT4860 receives its input signal from the IF output
of the LNB located on the satellite dish. Because this
LNB output usually is split among multiple transcoders,
the LNB power must be obtained from a separate power
inserter and supply that is connected ahead of an L band
splitter. The SCT4860 does not have the capability to
supply LNB power.
SETUP AND PROGRAMMING
The programming of each SCT4860 in an RMT150 rack
mounting tray is done from the PS151 power supply
mounted in that rack.
The UNIT SELECT buttons on the PS151 are used to
select the unit to be programmed, including the PS151
itself. The actual programming is done via the five
buttons on the left side of the PS151. If the RS232
remote control is connected, all programming other than the
setting of the PS151 RACK ID number and password program-
ming can be done remotely.
The chart below shows each of the menus that are available
for parameter set up and/or viewing for both SCT4860s and
the PS151 Power Supply. Pressing the left or right arrow
buttons will navigate through these menus. You may do this
without danger of disturbing any of the current settings. As
you navigate through the menus, the parameter is listed on the
top line of the display and the current setting is shown on the
bottom line. For set up purposes, it is best to progress
clockwise in the chart below (use the right arrow button),
starting from the RS232 adjustment on the PS151 and the
MODE menu for each of the SCT4860s.
The charts below show all of the settings that are available
through these menus.
MODE:
HITS:
G10:
DCII:
1, 2, ....16
7, 9, 12
COMBINED
SPLIT - Q
SPLIT - I
LNB:
STACKED
DUAL POL
IF FREQ:
Select
desired freq.
950.0 to
2150.0 MHz
DSS or DVB
BD RATE:
Select to match
transmitted
symbol rate.
Example:
19.510 M
SCT4860 TRANSCODER
TURBO:
QPSK 1/2
QPSK 3/4
8PSK 2/3
8PSK 4/5
QPSK 5/6
QPSK 7/8
8PSK 5/6
8PSK 8/9
8PSK 3/4
DCII
HITS
G10
DISHScan
DVB
DSS
TURBO
ENCODER:
ITU - A
ITU - B
RN - FADE
ENABLED
DISABLED
MODULAT:
INTERLV:
Select only
if ITU-B
is selected.
Select for
IF FREQ:
950.0 to 2150 MHz
desired freq.
Select
ITU - A:
16 -QAM
32 - QAM
64 - QAM
128 - QAM
256 - QAM
512 - QAM
1024 - QAM
ITU - B:
64 - QAM
256 - QAM
1024 - QAM
OFF AIR
CATV
I128, J1
I128, J2
I64, J2
I128, J3
I132, J4
I128, J4
I16, J8
I128, J5
I8, J16
I128, J6
I4, J32
I128, J7
I2, J64
I128, J8
I1, J128
(ITU-A only)
ENCODER:
DVB
DAVIC
CHANNEL
PLAN:
DVB or TURBO
QPSK 2/3
DISHScan Mode Only
IRC
HRC
BD RATE
CLOCK:
Set desired
fixed output
baud rate.
Auto
Fixed
OUTPUT:
RF OUT:
Select level
25 - 40 dBmV
NORMAL
STANDBY
CW
PRBS15
PRBS15M
PRBS23
PRBS23M
Select EIA
output channel
2 - 135
CHANNEL:
LBS:
A
B
RS232:
RACK ID:
Select desired
rack ID number.
0 - 7
2400
4800
9600
19200
PS151 POWER SUPPLY
LBS A
LBS B
CD ROM V2.7 or above required.
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assignable via RS232 by PC only.
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