Introduction
Instruction Manual: Professional Receivers and Decoders (IRD)
Page 1-5
ST.TM.TT1220.1
One DVB-ASI BNC output, user configured to provide a semi-
descrambled output stream (selected service descrambled)
•
SDI video output:
Replaces one of the composite video outputs
•
Audio output:
Two stereo pairs, that replace the single one in the base model.
Both stereo connectors provide MPEG-1 layer I and II (Musicam)
analogue decoded streams
S/PDIF output option – SW upgradeable (only on 2 channel
version)
AC-3 passthrough option – SW upgradeable (only on 2 channel
version)
AC-3 downmix option (only on 2 channel version)
2 x 9-pin D-sub output
•
Signal protection:
TANDBERG Television proprietary CA system
Unique Features, NDS VideoGuard Director Version
•
Conditional access:
NDS Director CA support or
BSkyB CA support
•
Over the air control:
NDS Director over the air control (only on NDS Director version)
•
Control relays:
Four relays available
Unique Features, DVB Common Interface Version
•
Conditional access:
DVB Common Interface CA support
•
Control relays:
One relay is available
1.2.2
Inputs
Transport Stream Input
The main input of the TT1220 is the QPSK f-connector, located on the rear
of the unit. This input interfaces directly to Low-Noise Block (LNB) and
accepts an intermediate frequency (IF) input in the 950 – 2150 MHz
(L-band) range. The unit can provide DC power, that may be used for
polarisation switching on the LNB, as well as a 22 kHz control signal. The
maximum input symbol rate is 44,5 Msym/s, while the maximum total
bit-rate is 60 Mbit/s.
An optional (factory fitted) DVB-ASI BNC connector may be present,
replacing the QPSK f-connector. This input accepts a DVB-ASI compliant
signal (188 or 204 byte), at a maximum of 60 Mbit/s.