COBHAM Sea Tel Dual Antenna Arbitrator, Руководство по установке

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Setup Dual Antenna Arbitrator (MXP)
5-1
5. Setup
5.1. Default Parameter Settings:
The default settings in the Dual Antenna Arbitrator and in the two Antenna Control Units typically are as listed in
the table below. You may need, or elect, to change these to conform with your network or LAN.
ARBITRATOR MXP A MXP B
User Name seatel
Password 1234
IP Address 192.168.30.194 10.1.1.100 10.1.1.101
Subnet mask 255.255.255.0 255.255.255.0 255.255.255.0
Default Gateway 192.168.30.254 10.1.1.105 10.1.1.105
UDP Port 3000 3000 3000
Forward Port 2002
Management ports 2000 : 2001 2000 : 2001
Serial Baud Rate 9600
Telnet Port 23
Arbitrator Switching Mode Auto
Default Active Antenna ANT A
Arbitrator GPS Source Active DAC
10MHz Hot Standby Off
Default Mute Polarity Low Voltage
5.2. Balancing TX Output
To provide seamless switching performance on the satellite network, it may be necessary to balance the RF
performance (TX & RX ) of the two antennas to compensate for dissimilar antenna sizes, BUC & LNB gains,
different cable losses, etc.
NOTE: You will cause other users to be knocked off of the network if you switch to an antenna which has more
than 2 dB difference and may cause detrimental impact on the network if the difference is greater than 4 dB.
1. Contact NOC technician
2. Select Manual Mode
3. Select ANT A
4. Conduct cross-pol isolation optimization with the NOC technician.
5. Conduct 1dB compression test on Antenna “A”, measure using one of the following means:
•
Feedback from the network (preferred).
•
Radio M&C power output value, if available on your RF equipment.
•
Power meter
Record TX Output @ 1dB compression point. ____ dB
6. Measure RX signal level at the RX Input to the satellite modem using a spectrum analyzer, modem signal
level, EbNo or SNR value. Record RX Input ____ dB
7. Select ANT B
8. Conduct cross-pol isolation optimization with the NOC technician.
9. Conduct 1dB compression test on Antenna “B”, measure using one of the following means:
•
Feedback from the network (preferred).
•
Radio M&C power output value, if available on your RF equipment.