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11 technical data – Dolby Laboratories Digital-Satellite-Receiver User Manual

Page 61

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These new services are constantly being developed and
improved by the providers. To utilize the services, it may
occasionally be necessary to update the software of the digi-
tal receiver.
Transponder:
Located on the satellite, serves to process one or several
programmes. It receives the signal from the ground station,
amplifies it, and broadcasts the signal back to earth.
Universal LNC:
Used for reception of the frequency ranges FFS (10,70 -
11,70 GHz), BBS (11,70 - 12,50 GHz) and FFS High Band
(12,50 - 12,75 GHz). The entire range is divided into two
bands:
Low Band: 10,70 - 11,80 GHz; LOF 9750 MHz
High Band 11,70 - 12,75 GHz ; LOF 10600 MHz
Operating voltage:
LNCs are supplied with power via the coaxial cable. To this
end, the receiver provides a voltage of 14 or 18 Volts
Intermediate Frequency:
The frequency range broadcast from the satellite cannot be
transmitted via cable. It is therefore converted by the LNC to
an intermediate frequency range of 950 to 2150 MHz. This
allows the signal to be transmitted, and processed in the digi-
tal receiver.
1. IF = 1st Intermediate Frequency

11 Technical Data

DBS Tuner:
Input frequency range

950 .... 2150 MHz

Input level range

- 65 dBm ... - 25 dBm

DBS Tuner input

F - socket

Input/output impedance

75 Ohms

Output for 1.IF

950 ... 2150 MHz (loop through)

AFC capture range

+/- 3 MHz

Demodulation

Shaped QPSK

Symbol rate

1 ... 45 Mbaud/s, SCPC/ MCPC

FEC

Viterbi and Reed-Solomon

Viterbi rates

1/2, 2/3, 3/4, 5/6, 7/8, automatic
adaptation

Roll-off Factor

35 %

Demultiplexing:

in accord. with ISO 13818-1

Card reader:*
Type

1 Slot card reader for integrated
CA system

Common Interface:*
Type

1 Common Interface slot for CI
modules

Power consumption

max. 0,3A/5V

Copy protection:*

Macrovision 7.1

61

* Only for receivers equipped with

this feature

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