Sea Tel 9711-92, Инструкция по установке и эксплуатации

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Setup –Optimizing Ku-Band Polarity and Cross-Pol Isolation 9711-92 Ku-Band TXRX
13-2
13.3. Optimizing Auto-Polarization Cross-Pol Isolation
During commissioning, under guidance from the network operation center, you will be adjusting to minimize the effect
of your transmission on the opposite polarization which maximizes your Cross-Pol isolation. Contact your satellite
provider to help you (over the phone) optimize the polarity angle for maximum Cross-Pol isolation (this optimizes your
transmit polarity and is much more accurate than trying to optimize your receive polarity).
1. Verify that tracking is ON and that the antenna is peaked on your targeted satellite (targeting calculates the
azimuth, elevation and polarization angles).
2. Follow your service provider technician’s instructions to set the modem to begin transmitting a CW (pure
carrier) signal.
3. Go to the SAT SKEW parameter in the Satellite menu of the ACU.
4. Press the LEFT arrow to edit the current value.
5. While under direction of the technician (on the phone), press the UP arrow to increment or the DOWN arrow
to decrement the value and then hit the ENTER key to adjust the feed.
6. The technician should indicate whether the adjustment you made improved, or worsened, the cross-pol
isolation. If it improved he will have you make another small adjustment in the same direction. If it
worsened he will have you make a small adjustment in the opposite direction.
7. Press the RIGHT key again, make the next change as directed and hit ENTER to carry out the adjustment.
8. Repeat this process of making small adjustments until the technician confirms that cross-pol isolation is
optimized.
9. Save your new SAT SKEW value.
13.4. Save New Parameters
Parameters that have been changed are only temporarily changed until they are SAVED. If changes are made and not
stored, they will still be effective but will be lost when power is removed or the RESET key is pressed. Simultaneously
press, and quickly release the LEFT and RIGHT arrow keys to access “SAVE NEW PARAMETERS” directly from any other
menu display. Verify that the change(s) you have made is/are correct and then select “SAVE NEW PARAMETERS”.
Press UP arrow and then ENTER to save any recent changes into the ACUs NVRAM for permanent storage.