Table of Contents
Advertisement
AC 3
Dolby Digital signal
ASTRA
SES (Société Européene des Satellites) satellite
system. Analogue and digital transponders in the
frequency range 10.7-12.75 GHz.
AV channel slot
Preferred channel slot on the TV set for external
connections such as Scart and HDMI
CAM – Conditional Access Module
Decryption decoder, which uses a Smartcard to
decrypt the encrypted radio and TV signals.
Channel package
The channel package for a digital transponder
normally includes several TV and radio channels.
Each channel package has a fi xed assignment
for the transponder transmission frequency, for
polarisation (horizontal or vertical), for the symbol
rate and for the Viterbi rate or error rate.
CI - Common Interface
Internationally standardised interface for CI
modules
CI+ - Common Interface
Further development of CI for CI+ modules
CVBS – (Composite Video, Blanking, and Sync)
Colour baseband signal for the transmission of
colour video signals
Data rate
Data bits transmitted per second. Is expressed
in kbit/s or Mbit/s. The higher the data rate the
better the quality of the transmitted signal.
Data reduction
Compression
of
video
Redundant information is discarded.
DHCP
Dynamic Host Confi guration Protocol. This permits
automatic integration into a network.
Automatic assignment of the IP address, subnet
mask, standard gateway and DNS server. As a
result these parameters do not need to be entered
in a network in conjunction with a router.
138
Brief technical glossary
and
audio
signals.
DiSEqC™
DiSEqC™ (Digital Satellite Equipment Control)
is a communication system between a satellite
receiver (master) and the peripheral satellite
components (slaves), such as LNBs, multi-
switches, rotating antenna systems.
It is a single master/multi-slave system, i.e. there
is only ever one master in the satellite system.
All activities start from the master.
DiSEqC™ components
If DiSEqC™ switching matrices are cascaded,
the master receiver must transmit the DiSEqC™
signal several times, so that all DiSEqC™ multi-
switches in the cascade receive their commands.
These days, DiSEqC™ components (slaves)
must be downward compatible, i.e. respond to
the analogue switching criteria from receivers that
are only equipped with H/V and 22 kHz control
signals.
A DiSEqC™ switching matrix will work with
analogue switching criteria until the DiSEqC™
command from the master is received. All
analogue switching criteria are then ignored.
DNS server
Domain Name System server. This is used to
determine IP addresses (other PCs or receivers)
within a network with DHCP function enabled.
Dolby Digital 5.1
Dolby Digital is a sound transmission method
that allows digital surround sound to be output
on a home cinema system.
DVB - Digital Video Broadcasting
DVB-S
refers
to
the
(S = satellite, C = cable, T = terrestrial).
DVB-S2
An enhanced DVB-S signal for HDTV with better
quality.
EUTELSAT
European
Satellite
Paris. Many orbit positions and European
customers.
Transponders
range 10.7-12.75 GHz.
FAT and FAT32
File systems for storage media
transmission
method
operator,
based
in
the
frequency
in
Advertisement
Chapters
Table of Contents
Troubleshooting
