TWIN QPSK-PAL CI
6
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.
Inputs/Outputs/Connections description
The unit (
Fig. 1
) is provided with:
1.
IF satellite input
2.
IF satellite output
3.
RF input
4.
RF 2 CH TV (module A and module B)
5.
Powering BUS connectors
6.
Status LED
7.
Control BUS connectors
8.
Baseband audio/video outputs (module A and module B)
9.
Slot to insert the CAM
10.
Programmer/PC socket
Introducción
The TWIN QPSK-PAL CI unit allows the user trasmodulate two channels (TV
or radio) selected from those in two satellite transponders in the same band
and polarisation, into two VHF/UHF PAL channels, with the possibility of
stereo modulation.
To do this, the unit demodulates the two QPSK input channels (transponders)
to obtain the MPEG-2 TS signal (Transport Stream MPEG-2) for each of the
input channels to carry out the subsequent modulation of both audio and
video signals of the selected program, to any channel or frequency between
46 and 862MHz.
NOTE
: The complete user manual is available in the CD
that is provided with the product.
Technical specifi cations
QPSK
Demodulator
LNB Powering (1 unit):
13/17V
(±0.5 V) / OFF
22KHz (±2KHz) (Select. ON/OFF)
Input VSWR (75 ohm):
> 7 dB (950 - 2150 MHz)
Input symbol rate:
2 - 42,5 Mbaud
Input through losses:
< 1.5 dB (950-2150 MHz)
Capture range:
± 960 ppm
Input frequency:
950 - 2150 MHz
Roll-off factor:
35%
Frequency steps:
1 MHz
Convolutional code:
1/2, 2/3, 3/4, 5/6, 7/8
Locking margin:
± 1 MHz (<5 Mbaud)
± 2 MHz (5-10 Mbaud)
± 5 MHz (>10 Mbaud)
Descrambling:
ETS300421
Deinterleaving:
ETS300241
Input level:
44 to 84 dBμV (-65 to -25 dBm)
Block code:
RS(204,188)
MPEG-2
Video decoders
Input 1 format:
MPEG-1
Chrominance format:
4:2:0
Decoding:
ISO/IEC 11172-2
Video resolution:
Max. 720 x 576
Input 2 format:
MPEG-2
WSS signalling:
Active
Decoding:
ISO/IEC 13818-2 (MP@ML)
Subtitle insertion PAL:
Active
TS input rate:
Max. 90 Mbits/seg
Base band video output:
Jack 2,5 mm.
Video rate:
1.5 to 15 Mbits/seg
MPEG-2
Audio decoders
Input format:
MPEG-1, MPEG-2
Audio output:
Stereo, Dual
Decoding:
LAYER 1, LAYER 2
RF output
Output frequency:
46- 862 MHz
VSWR Output (75 ohm):
10 dB min. 14 dB typ.
Frequency steps:
250 KHz
Through losses:
< 1.5 dB (46-862 MHz)
Maximum output level:
80 ±5 dBμV
Spurious band level:
55 dBc min. >60 dBc typ.
Attenuation:
>15 dB
General
Consumption (with
signal)*:
24V
: 550 mA typ. (no CAM inserted; LNB power OFF)
24V
: 590 mA typ. (CAM inserted; LNB power OFF)
24V
: 755 mA typ. (no CAM inserted; LNB power ON)
24V
: 810 mA typ. (CAM inserted; LNB power ON)
Index of protection:
IP20
* The unit’s consumption with CAM will depend on the type of CAM being used. For the LNB it is considered a standard consumption of 300 mA.
- The PSU can power up to 6 modules with CAM plus an extra module with CAM powering a LNB.
- Whenever the demand of power exceeds 4A (max. current for each output), it is necessary to distribute it between the two powering outputs of the PSU.
- The technical characteristics described are defi ned for a maximum ambient temperature of 45°C (113ºF). Forced ventilation is used for higher temperatures.