The VSAT can either be configured to transmit at maximum level or alternatively the desired EIRP
level can be set to a given level for use in a system where the power level received at the satellite is
aligned for all VSATs.
Figure 26: TX Power Calibration
5. The CW frequency to be used for measurements during the calibration procedure is obtained from the
service provider or satellite operator.
6. Contact the satellite operator / control center to clarify the line-up procedures for transmission power
calibration and fine adjustment and verification of polarization of the VSAT.
7. Push the Start Calibration button on the Line-up page to start automatic transmitter power calibration.
During this calibration, the transmit EIRP level is detected and the IDU output level is automatically
adjusted to the level required for transmitting with the configured EIRP level. Hence, no manual
configuration of the IDU output power level or cable attenuation is required.
6.4.3 3rd Party BUC Line-up
When using 3
rd
party BUCs (i.e., other than the SatLink 403x transceiver), the IDU output power has to
be manually adjusted during line-up by use of feedback from the system operator. Beware of the risk of
setting the IDU output level too high as a consequence of the antenna pointing not being sufficiently
accurate.
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