12
STR 821
Part N
o
: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK)
→
6 x FM
B
LINE
14. Technical data
SAT IF input
Frequency range
950 … 2150 MHz
Frequency step
1 MHz
AFC range
± 3 MHz
AGC level range
52 … 92 dBµV
Connector
F socket
Impedance
75 Ω
Through loss
≤ 1.5 dB
LNB remote power supply
12 V/ 400 mA, switchable
QPSK demodulator/ decoder
Symbol rate
1 … 45 MSps
Code rate
1/2, 2/3, 3/4, 5/6, 7/8
Roll off
35 %
Signal processing
EN 300 421 (DVB - S) [1]
FM modulator/ FM output
Max. FM deviation
75 kHz
LF level range (deviation correction) -10 … +6 dB
Frequency range
87.5 … 108 MHz
Frequency step
50 kHz
Output impendance
75 Ω
Output return loss
> 16 dB
Amplitude response 40 Hz...15 kHz,
reference 400 Hz, preemph. 50 µs < ± 0.5 dB
Rejection of modulation frequen-
cies between 18.9…19.1 kHz
and 23…100 kHz
> 40 dB
Total harmonic distortion between
40 Hz…15 kHz bei 40 kHz Hub
> 66 dB at 400 Hz
40 Hz…15 kHz bei 75 kHz Hub
> 60 dB at 400 Hz
Difference-tone-attenuation D2 between
40 Hz…15 kHz
> 70 dB
SNR weighted
(pre- and deemphase 50 µs, R, L) > 66 dB (Quasi-Peak-
Detector, CCIR weighted)
SNR unweighted
(pre- and deemphase 50 µs, R, L) > 72 dB (Quasi-Peak-
Detector, CCIR unweighted)
Cross-talk attenuation in range
40 Hz…100 Hz
> 38 dB (- 26 dBFS)
100 Hz…15 kHz
> 40 dB (- 26 dBFS)
Output frequency inaccuracy after
24 hours on 25 °C
< ± 2 kHz
Temperature depended
frequency inaccuracy
< ± 2 kHz
Spurios between
47…87.5 MHz and 111…862 MHz ≥ 64 dB
87.5…111 MHz
≥ 60 dB
Frequency error
≤ 3 kHz
Output level (switchable)
direct output (w/o direct. coupler) max. 6 x 110 dBµV
with directional coupler
max. 6 x 100 dBµV
Total level
1 dB (0 … 31 dB)
Individual level
0.5 dB (± 3 dB)
Connector
F socket
Stereo coder
Processing
Multiplex, CCIR
Deviation pilot
6.7 kHz
RDS coder
Processing
EN 62106:2001 [2]
Deviation
2.4 kHz
Supported services
PS, PTY, TP, TA, EON,
PI, RT, MS, CT, DI
Operating parameters
Current/ voltage
12 V (± 0.2 V)/ 850 mA
(without LNB feed)
Residual ripple of
≤ 10 mV
pp
supply voltage
Enviromental conditions
Temperature range
-10 ... +55 °C
Temperature range
for data keeping
5 ... 45 °C
Relative humidity
≤ 80 % (non condensing)
Method of mounting
vertical
Location of mounting
splash-proof and
drip-proof
Miscellaneous
Dimensions (l x w x h)
without 19” adapter
50 x 276 x 148 mm
with 19” adapter
50 x 301 x 148 mm
Weight
1,200 g
Delivery content
1 x Bus connector
3 x F connecting cable 140 mm
15. Bibliography
[1] EN 300 421 : Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for 11/12 GHz
satellite services
[2] EN 62106:2001 : Specification of the radio data system (RDS) for VHF/ FM sound broadcasting in the frequency
range from 87.5 to 108.0 MHz (IEC 62106:2000); German version
[3] EN 60728-11: Cable network for television signals, sound signals and interactive services Part 11: safety
(IEC 607278-11: 2005). German version EN 60728-11: 2005
[4] RFC 1157 Request for Comments (RFC): RFC Database; url: http://www.rfc-editor.org/rfc.html
