Dvb-S/S2 (Qpsk/8Psk) Digital Channel Configuration - Promax TV EXPLORER II Manual De Instrucciones

USER'S MANUAL. TV EXPLORER II/II+
Cell ID Cell identifier. Shows the transmissor identification code.
10 30
FREQ:
CH:
MPEG-2 TS DVB-T
Figure 20.- Screen of mesurement configuration (COFDM signals).

5.13.3 DVB-S/S2 (QPSK/8PSK) Digital Channel Configuration

Press the Measurements Configuration
CONFIGURATION menu and turn the rotary selector [1] to access the QPSK/8PSK
signals parameters which can be defined by user and are described below:
1) Channel BW (channel bandwidth)
Enables the channel bandwidth to be selected over a range from 1.3 MHz to
60.75 MHz. The selection of this parameter is essential for the correct operation of
the tuner, as it affects the frequency separation of the carriers. If you change the
bandwidth the Symbol Rate changes proportionally and vice versa.
2) Spectral Inv
If necessary, activate the Spectral inversion (On). Reception will be bad if
spectral inversion has been incorrectly selected.
3) Code Rate
Also known as Viterbi ratio. It defines the ratio between the number of data bits
and actual transmission bits (the difference corresponds to the control bits for error
detection and correction).
In DVB-S it permits to choose between 1/2, 2/3, 3/4, 5/6 and 7/8. In DVB-S2 it
permits to choose one of the following values: 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5,
5/6, 8/9 y 9/10.
4) Symbol Rate
It is possible to choose over the following values: from 1000 to 45000 kbauds.
When selecting the option appears the current value, in order to modify it enter a
new value through keyboard when appears the data enter symbol appears on the
upper left corner screen. If you change the bandwidth the Symbol Rate changes
proportionally and vice versa.
12/2013
CONFIGURATION
» CHANNEL SET:
» SIGNAL:
» SYSTEM:
50 70 90
» FRAME RATE:
650.00 MHz C/N:
» CHANNEL BW:
-3 kHz » POWER:
» GUARD:
43 MER:
» CARRIERS:
CBER:
» SPECTRAL INV:
VBER:
CODE RATE:
CCIR
DVB-T/H
PAL
110 130
50Hz
>21.3 dB
8MHz
55.8 dBµV
1/8
19.5 dB
8K
5.0E-2
OFF
5.3E-4
2/3
[17] key to access to the
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