Sea Tel 9797B-70 C-Band TX/RX, Инструкция по установке и эксплуатации

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Maintenance and Troubleshooting 9797B-70 C-Band TXRX
7-18
7.5. Aligning the drop-in feed, of the Antenna
Follow the steps below to re-align the drop-in feed assembly (then re-balance the antenna).
2. Secure Power, tie down antenna with stow braces or web
straps at an elevation of 0 to re-align (or change) the
Modular Drop-in Feed Assembly.
3. Rotate the Modular Drop-in Feed Assembly until the
POLANG STOP is Bottom Dead Center.
4. Engage POLANG MOTOR drive gear (Linear Feeds ONLY)
and tighten the motors mounting screws.
5. Rotate the gear on the POLANG POT until it is in the center
of its range of rotation.
6. Engage POLANG POT driven gear (Linear Feeds ONLY) and
tighten the pots mounting screws. NOTE: This should cause
a reading of about 0120 in the ACU ANTENNA – POL menu
display.
7. Remove the tie down stow braces or web straps. Re-
balance the antenna.
8. Target and re-acquire desired satellite.
9. If a CIRCULAR polarized feed is installed skip to step 15.
10. If a LINEAR polarized feed is installed, continue:
11. If MANUAL Polarization will be used, skip to step 13.
12. Set POL TYPE parameter to 72 (for AUTO polarization
mode).
13. Select POL OFFSET parameter to align cross-pol isolation
with the network operation center. While in POL OFFSET,
use the UP or DOWN arrow keys to optimize polarization as
dictated by the network operation center.
14. Set POL TYPE parameter to 9 (for manual polarization
mode). Manually adjust polarization to align cross-pol
isolation with the network operation center.
15. Save the parameter changes as necessary.
16. Test tracking in each of the 4 quadrants (UP, DOWN, LEFT &
RIGHT of peak signal AZ/EL pointing) to assure that
Tracking drives the dish back to peak satellite signal level.
- Manually mis-point the antenna in one
quadrant AND;