** The monitor output frequency
for the EN-XX IF is fixed at
1.080GHz. The monitor output
frequency for the EN-XX L-Band
tracks with the main RF output
frequency.
Power
Allows the operator to configure the
output power of the main RF output
port. The monitor output power level
for the EN-XX IF and L-Band is fixed
at -45dBm. Power is defined as the
composite power referenced to an
un-modulated (Pure Carrier) carrier.
7039: -50 to -7dBm LBAND
7139: -35 to +5dBm LBAND
-30 to +5dBm IF
Spectrum
Inversion
The Spectrum Inversion options are
either Normal or Invert. If Normal is
selected, then spectrum inversion
does not occur. Spectral inversion can
occur when either the baseband
signal is up-converted to an IF
frequency or when the IF is
upconverted to the desired RF output
frequency.
Invert
Normal
FEC Frame
When operating in DVB-S2, the Frame
Type options are either Normal or
Short. The Normal 64,800-bit FEC
frame provides better protection but
introduces more latency compared to
the Short 16,200-bit FEC frame.
Therefore, the Short FEC frame type
should be selected in applications
where latency is critical and the
longer frame type should be used to
optimize protection.
Short
Normal
Rolloff
The Rolloff selection will determine
the shape of the output filter. The
occupied bandwidth of the modulated
signal is the symbol rate multiplied by
(1+α) where alpha (α) is the rolloff
factor. By using a lower alpha,
carriers can be spaced closer together
on a given transponder or an
increased symbol rate can be realized
for a given bandwidth.
5 (requires feature key)
10 (requires feature key)
15 (requires feature key)
20
25
30
Pilot
When operating in DVB-S2, the Pilot
options are either ON or OFF. When
pilots are enabled, the total data
throughput is reduced by
On
Off
