VSAT LNB Data Sheet (physical LNB)
98-150471-A02
Appendix A: Technical specifications
A-9
Te
ch
nical specifications
A.3.1
VSAT LNB user installation and configuration information
The SAILOR 900 VSAT High Power can interpret 4-band LNB switching signals and exact LO information
acquired directly from the attached VSAT modem by means of a data connection. When using a VSAT
modem which is integrated to use LO information transferred via a data connection, the LO must be in
the range of 9.6 GHz to 11.3 GHz (Optimum values are 9.75 GHz and 10.75 GHz as these match the
physical LNB values). All VSAT modems that can be used with SAILOR 900 VSAT High Power use this
approach for selecting the LO frequency, except a COMTECH modem with ROSS server. A COMTECH
modem with ROSS server reads switching signals by means of a data connection instead of using voltage
and tone signals.
Example configuration for an iDirect i5100 (L-Band range 950 - 1700 MHz)
Ku-Band frequency:
11.7389 GHz
L-Band frequency:
1638.9 MHz
LO:
10.1 GHz
Since the LO frequency of 10.1 GHz is in the range of 9.6 GHz to 11.3 GHz, this is a valid set of data. The
SAILOR 900 VSAT High Power will tune to 11.7389 GHz and provide the carrier on the L-Band frequency
1638.9 MHz.
Example configuration for a special VSAT modem (L-Band range 950 - 1450 MHz)
Ku-Band frequency:
12.750 GHz
L-Band frequency:
1450 MHz
LO:
11.3 GHz
Since the LO frequency of 11.3 GHz is in the range of 9.6 GHz to 11.3 GHz, this is a valid set of data. The
SAILOR 900 VSAT High Power will tune to 12.750 GHz and provide the carrier on the L-Band frequency
1450 MHz.
4-band switching
When using 4-band switching and a VSAT modem which is integrated with SAILOR 900 VSAT High Power
to use voltage and tone for switching, the switching is done according to the following table:
Currently none of the VSAT modems which are integrated with the SAILOR 900 VSAT High Power use
voltage and tone switching.
LO frequency Voltage 11-19 V Tone 22 kHz Ku band frequency (L-band 950-2150 MHz)
9.75 GHz
11-14 V
Tone off
10.7-11.9 GHz
10.25 GHz
11-14 V
Tone on
11.2-12.4 GHz
10.75 GHz
16-19 V
Tone off
11.7-12.75 GHz
11.25 GHz
16-19 V
Tone on
12.2-12.75 GHz
Table A-8: 4-band switching
SAILOR900HP.book Page 9 Monday, July 18, 2016 12:44 PM
