Calibration of the SAILOR 900 VSAT
6-12
Chapter 6: Configuration
98-133966-G1
6.2.5
SAILOR 900 VSAT fixed TX gain
principle
The SAILOR 900 VSAT uses a new transmitter chain concept. After
calibration it provides a fixed gain of 44 dB from the Tx-port of the
ACU to the output of the BUC. Advantages of the fixed TX gain
principle are:
• Fixed TX gain over frequency and cable length
• TX gain independent of antenna cable length
• Utilization of the full 8W BUC power over frequency
• P1dB compression point the same over frequency
When installing the SAILOR 900 VSAT you make a cable calibration. At
that point every installation finds the same P1dB compression setting
regardless of cable length. The P1dB compression point is
approximately -5 dBm at the ACU Tx-port. Additionally the SAILOR 900
VSAT system monitors the TX gain in real time.
* You find the maximum cable loss at
Example:
ACU Tx-port power: -5 dBm > BUC output = +39 dBm
(compression)
Figure 6-9: Fixed TX gain principle
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SAILOR900TM.book Page 12 Monday, September 16, 2013 11:01 AM
Summary of Contents for Sailor 900 VSAT
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