SatLink VSAT User Guide
Publication no. 101557
Copyright © 2009 – STM Group, Inc.
Page 24 (160)
Figure 20 : RX SNR Graph
6.3.2 TX power calibration
This section describes how to calibrate the TX output power when using the STM SatLink 4033/4035
transceiver. See Appendix I for a description of how to do TX power calibration for other transmitters
(BUCs).
TX power level calibration and return link acquisition shall only be performed if the
forward link has been acquired and is operating properly.
1. Ensure that the STM SatLink VSAT configuration procedure in section 6.2 has been performed.
2. Ensure that the STM SatLink VSAT receiver is started and the Forward Link is acquired.
3. Ensure that the STM SatLink VSAT transmitter is turned off and the TX cable from the STM SatLink
VSAT to the ODU is connected.
4. Click Lineup option in VSAT home page and configure the transmit EIRP level of the VSAT.
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.
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