Settings
98-175666-A Chapter 4: Setup of the antenna 4-8
Generic Modem
To set up the modem type Generic, do as follows:
Use the generic modem profile with any type of single beam VSAT modem.
1. Select the BUC reference. The setting is: TX 50 MHz
2. Use the Predefined satellites drop down list to select the VSAT service satellite or
enter the satellite position and polarization skew manually.
3. Enter the Maximum inclination for the VSAT service satellite. Normally 0° but older
satellites might have an inclination where it moves in a larger area in the sky.
4. Configure Elevation TX cutoff according to the country regulation. It is the low
elevation level according to the horizon where the antenna will seize transmission.
5. Configure all the data for the frequency setup and polarization for the VSAT service
satellite.
6. Select Tracking type for the antenna. Recommended setting is Narrow band and
check Modem at RX frequency.
7. Select GNSS output and appropriate baud rate if the modem need GPS input. GPS
NMEA strings are available on the RS-232 connector of the BDU.
8. Select RSSI lock type and RSSI lock level if the modem can supply analog RX lock
information. Input the RSSI lock to the RS-232 connector of the BDU.
9. Click the Save icon to save the VSAT profile.
Elevation TX cutoff versus VSAT modem bandwidth and power
1. At Elevation TX cutoff enter the minimum elevation angle for the antenna to
function in accordance with ETSI (ETSI EN 302 340) and FCC (FCC §25.205)
regulations.
Figure 4-9: Setup of Generic Modem
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