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Technical Specification
B.4.2
LNB Power and Control
The Multi-Format Receiver provides LNB power and control signals through the
active RF input connector. LNB power and controls are enabled through the Satellite
Input Menu, see
Annex C, Menus
.
The Multi-Format Receiver 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.13 LNB Power and Control
Parameter Specification
Voltage V (nominal)
Receiver
Polarisation
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
Boost voltage
1 V typical
B.4.3
TTV G.703 (DS3 and E3) OTTV G.703 (DS3 and E3) (Option Card)
Table B.14 TTV G.703 Input Specification
Input Specification
Safety status
SELV
Connector type
BNC, Female
Input impedance
75
Ω
Data rate
DS3: 45 Mbps
E3: 34 Mbps
Network Type
PDH
Network
Specification
CCITT (ITU-T) G.703
Reed-Solomon
On/Off, Not available in 188-packet mode
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.
EN/LZT 790 0003/2 R1A
B-15
Содержание RX1290
Страница 1: ...RX1290 Multi Format Receiver Software Version 3 0 0 and later REFERENCE GUIDE EN LZT 790 0003 2 R1A...
Страница 22: ...Introduction EN LZT 790 0003 2 R1A 1 14 BLANK...
Страница 42: ...Operating the Equipment Locally EN LZT 790 0003 2 R1A 3 4 BLANK...
Страница 68: ...Operating the Equipment Remotely EN LZT 790 0003 2 R1A 4 2 BLANK...
Страница 72: ...Operating the Equipment Remotely EN LZT 790 0003 2 R1A 4 6 BLANK...
Страница 74: ...Alarms EN LZT 790 0003 2 R1A 5 2 BLANK...
Страница 88: ...Preventive Maintenance and Fault finding EN LZT 790 0003 2 R1A 7 2 BLANK...
Страница 142: ...Technical Specification EN LZT 790 0003 2 R1A B 28 BLANK...
Страница 146: ...Menus EN LZT 790 0003 2 R1A C 4 BLANK...
Страница 153: ...Menus Menus EN LZT 790 0003 2 R1A C 11 EN LZT 790 0003 2 R1A C 11...
Страница 168: ...Menus EN LZT 790 0003 2 R1A C 26 BLANK...
Страница 170: ...Language Abbreviations EN LZT 790 0003 2 R1A D 2 BLANK...