User`s manual

User’s manual · TSQ 310
- 12 - TSQ 310 version_en_1.1 FTE maximal
Cable modulator ( Out Cable)
This option allows you to configure the DVB-C modulator that the device has.
- Spectrum inversion: Activate or deactivate the spectrum inversion in the
modulation.
- Modulation: Modulation Format. Options: 16 QAM, 32 QAM, 64 QAM, 128 QAM,
256 QAM.
- Roll-off factor: Roll-off factor reduces the interference between symbols thanks to the raised cosine filtering, the bigger
this value is, the less interference between symbols that will be caused. Typical Value according to rules DVB-C =15 %.
Options: 1.5, 1.3.
- Symbol speed: The available symbol speed ranges from 1000 to 7000 S/s.
In order to estimate the output symbol speed you have to take into account the following parameters: input
modulation, input symbol speed, input FEC, output modulation.
For example, for a 8PSK signal with 22000 MS/s and a FEC 2/3, the output symbol speed should be calculated
according to the chosen QAM modulation.
()()
()
()
QAMsymbolnºbitQAMsymbolnºbit
PSKsymbolnºbitFEC
SYMBOL.IN
V
SYMBOL.OUT
V
⋅
⋅⋅
=
⋅
⋅⋅⋅
=
3
3
2
22000
8
Modulation QPSK 8PSK 16 QAM 32 QAM 64 QAM 128 QAM 256 QAM
Number of bits per
symbol
2 3 4 5 6 7 8
Modulation 16 QAM 32 QAM 64 QAM 128 QAM 256 QAM
Symbol speed (MS/s) 11000 8800 7333 6286 5500
Output configuration ( TV output)
In these options you can configure the output parameters of the terrestrial signal.
- RF Channel (MHz): Output frequency of terrestrial modulation. In order to
introduce the frequency, press the “OK” button and the cursor will be placed over
the frequency. With the keys of the cursor, we can move through all the digits and
change the values. Press “OK” in order to save the value. Options: 47-862 MHz.
- RF Level: Regulation of the output level of the modulated signal. Options: 0-15dB.
Summary table:
2. Auto
This option allows saving and loading the configuration of the module in the PRO
201 programmer.
Satellite input Cable output TV output
- L.O. frequency
- Input Frequency
- Symbol Rate
- Antenna
- Diseqc
- Symbol rate auto
- DVB Mode
- Invert (Spectrum Inversion)
- Modulation
- Roll-off factor
- Symbol speed
- RF Channel
- RF Level
TSQ 310 * Out Cable
Modulacion: 64
>Roll-off: 1.5
Symbol speed: 1000
TSQ 310
> *Read from Module*
*Write to Module *
TSQ 310 *Out TV
>RF Channel: 474000
RF Level: 013