STM SatLink 2000 - Page 57

SatLink VSAT User Guide
Publication no. 101557
Copyright © 2009 – STM Group, Inc.
Page 56 (160)
10. Verify the calibrated power levels using the CLI command dvb tx show.
Example:
dvb tx show
Satellite (DVB) TX Configuration
--------------------------------
Auto start : Enabled
Population ID : 2
IDU output power : -15 dBm
EIRP : max
Default CW Frequency: 14.488000 GHz
ATM mode : VC-Mux
Header Compression : RTP/UDP/IP/DSM-CC
Satellite (DVB) Transmitter Status
--------------------------------
State : On (TDMA)
Header Compression : Disabled
IDU Output Power : -23.1 dBm
ODU Output Power : 34.9 dBm
EIRP : 46.1 dBW
Eb/No : 9.5 dB
Timing correction : -39 us (263629 us)
Frequency correction: -900 Hz
#
The CW will now be left on 20 minutes to enable fine adjustment of the antenna. To turn off CW
transmission, use the CLI command
dvb tx cw off.
9.3.3 Fine adjustment of antenna pointing
If the CW from the power calibration routine is still on, it can be used for the antenna fine-adjustment as
well. Otherwise start CW transmission on the default CW frequency by issuing the CLI command
dvb
tx cw on.
Ask the control centre if they are measuring the expected power level for the CW. If not, it
is likely that the antenna pointing is not optimal. Fine-adjust the antenna pointing until the
CW power level detected by the control centre is within their requirements.
9.3.4 Fine adjustment of antenna polarization
Ask the control centre if the measured level of the CW on the cross-polar transponder is below their
requirement. If not, adjust the rotation angle of the RX/TX/Feed Assembly with respect to the feed horn
until the polarization discrimination is within specified limits.
9.4 Test of connection to the Hub
After the line-up procedure in section 9.3 (or alternatively, Appendix I.1) has been successfully
completed the STM SatLink VSAT is ready to logon to the Hub.
The STM SatLink VSAT is only allowed to log on to the network if its DVB MAC address is registered
at the Hub. Registration of the VSAT’s MAC address at the Hub is a network operator responsibility.
The CLI command
device show can be used to display the DVB MAC address of the STM SatLink
VSAT or it can be found on the label underneath the STM SatLink VSAT chassis. The MAC address is
also shown on the CLI message display during the boot procedure of the STM SatLink VSAT.