Technical Specification
B.2.1.2 LNB Power and Control
The RX8000 Integrated Receiver/Decoder provides LNB power and control signals
through the active RF input connector. LNB power and controls are enabled through
the Satellite Input Menu.
The RX8000 Integrated Receiver/Decoder supports voltage controlled LNBs only.
The LNB power circuit provides automatic protection against short circuits in the
LNB or its cable. When the short circuit has been removed recovery is automatic.
Switchable boost of the LNB voltage to allow for losses in long cables and control of
22 kHz tone insertion are provided. The LNB power characteristics comply with IEC
1319-1 and are as per Table B.22.
Table B.22 LNB Power and Control
Parameter Specification
Voltage V (nominal) Receiver Polarisation
7
Voltage 13
18
Vertical/circular right
Horizontal/circular left
Current 350 mA maximum
LNB control
22 ± 2 kHz tone
Tone amplitude
0.65 ±0.2 Vp-p
B.2.2 DVB-S2X Satellite Receivers
B.2.2.1 General
Table B.23 DVB-S2X Satellite Receiver Input Specification
Parameter Specification
L-band input
Safety status TNV - 1
Number of inputs 4 (RX8200/HWO/DVBS2X/A)
Input connector type
F-type, female 75 Ω
Input impedance
75 Ω
Return loss > 10 dB
Isolation between inputs > 60 dB, typically 70 dB
LO leakage < -80 dBm
7
Receive Polarisation: As specified in ETS 300 784 Satellite Earth Station and Systems (SES); Television Receive-only (TVRO) earth
stations operating in the 11/12 GHz frequency bands.
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