Analogue audio performance, Digital audio outputs, Internal decoder – TANDBERG TT1260 User Manual
Page 101: B.4 internal decoder, B.3.10 analogue audio performance, B.3.11 digital audio outputs
Technical Specification
Instruction Manual: TT1260 Standard Definition Professional Receiver/Decoder
Page B-9
ST.TM.E10100.1
B.3.10 Analogue Audio Performance
Table B.8: Analogue Audio Performance
Parameter
Performance
Voltage gain adjustment
± 1 dBm
Maximum undistorted output (terminated with 600
W) 21 dBm
Crosstalk
50 to 100 Hz: >80 dB
100 to 15 000 Hz: >60 dB
Frequency response
50 to 16 000 Hz:
±0.5 dB
Total harmonic distortion (THD), terminated in 600
W
<0.5%
Signal-to-noise ratio (referenced to 1 kHz tone at
+9 dBm out)
³ 70 dB
Audio Reference Level
-9 dBm
B.3.11 Digital Audio Outputs
Digital audio outputs comply with E1A-422
3
and have a maximum data
rate of 3.072 Mbit/s.
Digital audio is output on 2 x 9 Ways D-type connectors.
B.4
Internal Decoder
The TT1260 contains an internal Decoder. A packet demultiplexer selects
audio, video and ancillary services from the stream received from the
digital demodulator. A service filter reduces the incoming data rate
(max 160 Mbit/s) to that suitable for demuxing/decryption. The Decoder
supports decoding of compressed video at rates of up to and including
50 Mbit/s.
Table B.9: Maximum User Bit-rates
Modulation
FEC
R188max (Mbit/s)
QPSK
1/2
41.470588
QPSK
2/3
55.294118
QPSK
3/4
62.205882
QPSK
5/6
69.117647
QPSK
7/8
72.000000
8PSK
2/3
82.941176
8PSK
5/6
103.676471
8PSK
8/9
110.000000
16QAM
3/4
110.000000
16QAM
7/8
110.000000
ASI
160
3
EIA-422-A-1978: Electrical characteristics of balanced voltage digital interface circuits.