Publication no. 101557
Rev 14.1.1-2
Copyright 2006-2012 – STM Group, Inc.
Example:
# odu lnb 20
This selects the Invacom SPV-1SM LNB. Use the command odu show to view the ODU configuration:
# odu show
Antenna
---------------------
Type Patriot TX-090KU - 0.9m
Antenna controller None
Tx Gain at 14.25 GHz 40.9dB
Transmitter (BUC) Configuration
-------------------------------
Type Invacom TUL-204 (14.0-14.5 GHz)
Local oscillator 13.050000 GHz
24V DC supply On
Receiver (LNB) Configuration
----------------------------
Type Invacom SPV-1SM (10.70-12.75 GHz)
Local oscillator - High band 10.600000 GHz
Local oscillator - Low band 9.750000 GHz
Oscillator switching frequency 11.700000 GHz
LO Switching mode 22kHz
13/18V DC supply 13V
Finally, save the configuration to flash memory using the command save config.
The VSAT must be restarted for the new ODU configuration to take effect.
9.2.2 VSAT Geographical Position
In order to calculate the delay to the satellite correctly for the logon burst, the VSAT must be configured
with its own ODU position.
The VSAT, by default, uses the timing compensation procedure as specified by SatLabs.
For using the VSAT with a DVB-RCS Hub requiring proprietary timing compensation,
refer to Appendix M.
1) Find the position of the location where installing the VSAT ODU using a standard GPS.
The VSAT position is entered in one of the following two formats:
a) degrees, minutes, 1/100 minutes, and direction
b) degrees, minutes, seconds, and direction
To convert between the two formats use the formula 1/100 minutes = (seconds/60) x 100
Entering the direction as a number {0,1} selects format a, while entering the direction as a
letter {„n‟,‟s‟,‟e‟,‟w‟} selects format b.
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