OpenAMIP setup for iDirect iNFINITI & Evolution
98-145510-E Appendix C: VSAT modem settings C-5
The signal strength from the modem is measured on RS-232 pin 9. It is a DC voltage in the
range of 0 - 5 VDC.
The signal strength is displayed in the web interface on the Dashboard as 0 – 500. The
minimum value for an Internet connection is 250 - 260.
C.1.2 Sample options file
The following section presents a sample iDirect OpenAMIP Options File. The highlighted
parameters in bold are important and needed for the VSAT system to function correctly.
See comments in brackets for explanation of the use.
[ANTENNA]
addr = 10.1.6.2
(ACU LAN1 IP setting)
connect_timeout = 30
dedicated_interface = ixp0
manufacturer = OpenAMIP
max_skew = 90.000000
model = OpenAMIP
port = 2000
(ACU Modem Profile setting)
Messages sent from the ACU to the VSAT modem Explanation
s 1 1 Functional, Tx OK
w 1 55.794010 12.52272 985523005 GPS valid, Latitude, Longitude, Time
Table C-6: Messages sent from the ACU to the VSAT modem (examples)
The iDirect modems only sends the satellite information once when booting. If
the ACU has not received the information for some reason, the system cannot
point. In that case the modem will automatically boot after 5 minutes and send
the satellite information again.
Ranges for signal strength
VDC Antenna status
0-2.5 RF energy is detected, but from a wrong or
unidentified satellite.
2.6-5.0 Carrier lock, correct satellite.
Table C-7: Ranges for signal strength for iDirect OpenAMIP VSAT
modem
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