Technical Specifications - Televes T.OX Serie Guía Rápida

DVBS2 - COFDM
Important safety instructions
General installation conditions
• Before handling or connecting the equipment, please read this
manual.
• In order to reduce the risk of fi re or electric shock, do not expose the
equipment to rain or moisture.
• Do not take the cover off the equipment without disconnecting it
from the mains.
• Do not obstruct the equipment's ventilation system.
• Please allow air circulation around the equipment.
• The equipment must not come into contact with water or even be
splashed by liquids. Do not place containers with water on or near the
equipment if it is not adequately protected.
• Do not place the equipment near sources of heat or in excessively
moisture conditions.
• Do not place the equipment where it may be aff ected by strong
vibrations or knocks.
• This symbol indicates that the equipment complies with
the requirements of CE mark.
NOTE: The complete user manual is available in the CD
that is provided with the product.
Technical specifi cations
Input frequency
Symbol rate
Frequency steps
Satellite
Demodulator
Input connectors
and output
Input impedance
LNB power supply
Modulation format
Guard interval
COFDM
Modulator
FEC
Bandwidth
Output frequency
Frequency steps
RF output
Maximum output level
Attenuation
Consumption*
General
Index of protection
* For the LNB it is considered a standard consumption of 300 mA.
The technical characteristics described are defi ned for a maximum ambient temperature of 45°C (113ºF). Forced ventilation is used for higher temperatures.
Inputs/Outputs/Connections description
The unit (Fig. 1) is provided with:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Introduction
950 - 2150 MHz
10-30 Mbaud (QPSK- 8PSK)
1 MHz
"F" female
75 ohm.
13/17V/ OFF 22KHz (ON/OFF)
QPSK, 16QAM, 64QAM
1/4, 1/8, 1/16, 1/32
1/2, 2/3, 3/4, 5/6, 7/8
7 MHz, 8 MHz
177 - 266 / 474 - 858 MHz (CH mode)
45 - 862 MHz (Frequency mode)
166 KHz
80±5 dBμV (progr.)
>15 dB (prog)
24V : 270 mA (LNB power OFF)
24V : 480 mA (LNB power ON)
IP20
IF satellite input
IF satellite output
RF input
RF output
Module power supply input
Status LED
Control BUS connector
Programmer / PC connector
Programmer unit 7234
The DVBS2 transmodulator with COFDM receives a satellite transponder
in some DVBS (QPSK) or DVBS2 (QPSK or 8PSK) modulation formats and
demodulates it by obtaining an MPEG-2 transport package.
The MPEG2 transport package is then modulated in COFDM format and
converted to the output channel (UHF or VHF and with a maximum
bandwidth of 8 MHz) using an agile up-converter.
The programming of the transmodulator operating parameters (input
frequency, output channel, modulation format and adaptation of services
mainly) is performed through the universal programmer (ref. 7234).
Through loss
Modulation
Internal FEC
External FEC
Roll-off factor
Input VSWR
Scrambling
Interleaving
Cell_id
Output spectrum
Through loss
Return loss
Input and output
connectors
Output impedance
< 1,5 dB typ.
DVB-S2 (QPSK, 8PSK)
DVB-S (QPSK)
LDPC (9/10, 8/9, 5/6, 4/5, 3/4, 2/3, 3/5,
1/2, 1/4, 1/3, 2/5)
BCH (Bose-Chaudhuri-Hocquenghem)
20%, 25%, 35%
10 dB min.
DVB ET300744
DVB ET300744
Selectable
Normal / Inverted (Selec.)
< 1,5 dB typ.
> 12 dB typ.
"F" female.
75 ohm.
6