Establish The 1 Db Compression Point - iDirect iNFINITI 3000 Installation And Commissioning Manual

9

Establish the 1 dB Compression Point

The 1 dB Compression Point test is performed with the same CW setup used during the previous
cross polarization test. This test establishes the point at which the Satellite Router's transmit
power saturates the BUC.
WARNING
1. While still in iSite Cross Polarization dialog box and the Network Operator is
watching the CW, increase the transmit power of the carrier in the Adjust
Transmit Power drop-down box by 1 dBm increments
WARNING
2. If power does not increase, decrease the power by 1 dBm until the operator sees
the CW decrease by 1 dB.
NOTE
3. Record the TX power value. This will be used as the maximum power for this
remote in the NMS.
4. Click the Stop button to turn off the CW carrier and exit the iSite application.
The 1 dB compression point has now been established.
This completes the Satellite Provider's portion of the call. Disconnect the Satellite Provider from
the call.
Do not power off the Satellite Router yet.
iDirect iNFINITI series Installation and Commissioning Guide, Release 7.0
To avoid overdriving the satellite, do not conduct this test if the
power of the BUC exceeds five watts.
The operator should see the CW increase in power by
approximately 1 dB. If the power does not increase, then the BUC
may already be saturated. Although this scenario is unusual, it
can occur.
The last point at which the CW changes by 1 dB is the 1 dB
compression point.
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