Televes DVB S2-QAM Manual De Instrucciones página 38

User manual
16 QAM 10.3125>6.9 Mbaud
YOU MAY NOT use
this modulation
32 QAM 8.25>6.9 Mbaud
YOU MAY NOT use
this modulation
64 QAM 6.875 Mbaud
128QAM 5.892 Mbaud
256QAM 5.156 Mbaud
In case the user selects a modulation that
could not adapt/receive the input signal (in
the example 16 or 32 QAM), after recording
the configuration, the control will show
"128QAM" blinking/twinkling to indicate this
problem.
If we select a lower output QAM baud rate
than the minimum value (for example 6.870
for 64QAM) the control will show/display
"ERR!" instead of "Baud".
On the other hand, the QAM baud rate is an
average value. The current value can vary,
and at certain moments, can be superior to
the average value. For example, in 64QAM the
sign can occasionally exceed 6.875 Mbaud.
For this reason, it is advisable to leave a cer-
tain margin to accommodate/adapt these
variations, increasing the QAM baud rate in
several Kbaud (between 1 and 5 is normally
enough, depending on the entry transpon-
der), for example 6.876 Mbaud.
c.- Output menu
The first main menu shows the output fre-
quency/channel (depending on the freq.
mode) and the output level.
OUTPUT
Freq: 474.00
Level: 00
Output:Norm.
The output frequency range is 47-862 MHz.
The output level control ranges from 00 to
99.
Norm Normal output mode
CW Modo Continuous Wave.
A carrying signal was
generated on the selected
frequency (used to balance
the head-end in the absen-
ce of an input signal).
OFF No output signal is genera-
ted.
38
DVB S2-QAM TS-PROC
To change the frequency you must press
the button until is located over the selec-
ted digit. By using and
modify the value of the digit. The following
decimal values are permitted for the output
frequency:
=> .00 MHz
=> .25 MHz
=> .50 MHz
=> .75 MHz
To modify the output channel, the output
level and the output format you must press
until the cursor is situated over the desi-
red parameter, the value can be modified by
pressing and
.
d. Service menu
This menu shows the list of services of the
selected transport stream. Each time the
user selects a new input channel, the unit
will search for services. During this process
the unit will show the following message,
indicating the number of services found:
SERVICE
Scanning:003
you can