Sea Tel 9797A-27, Installation And Operation Manual

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Functional Testing 9797A-27 C-Band TXRX
6-2
6.4. Azimuth & Elevation Drive
This verifies that the antenna moves in the correct response to the keys.
1
Press the NEXT key several times to display the Antenna menu.
2
Press the Tracking key to toggle Tracking OFF. Press the UP arrow key repeatedly and verify that
the antenna moves up in elevation.
3
Press the DOWN arrow key repeatedly and verify that the antenna moves down in elevation.
4
Press the RIGHT arrow key repeatedly and verify that the antenna moves up in azimuth.
5
Press the LEFT arrow key repeatedly and verify that the antenna moves down in azimuth.
If the antenna does not drive properly, refer to the Troubleshooting Section of this manual. Return to normal
operation OR Continue with the next functional test.
6.5. Test Tracking
Four Quadrant Tracking Test is the best way to test tracking (regardless of which tracking mode is being
used). This tests each of the 4 quadrants (UP, DOWN, LEFT & RIGHT of peak signal AZ/EL pointing) to
assure that the tracking mode being used drives the dish back to peak satellite signal level.
Note: The
amount of time required for the antenna to return to “peak” (in Conscan or Step track mode) is dependant
upon the AZ & EL Step Size parameter values.
1
Press AUX1 to Turn Tracking OFF. Press ANTENNA twice to select Azimuth entry menu and note
current AGC level. Press UP arrow key repeatedly until AGC falls about 100 counts, note current AZ
position (You should have moved the antenna 1/3 to ¾ of a degree depending on antenna size and
frequency band). Observe the Conscan signaling in the lower left of the display, if the system is
operating in Conscan tracking mode the signaling should be
4 ’s. Press AUX1 to turn tracking ON and
verify that the antenna does return to the previous AZ position and the peak AGC level.
2
Press AUX1 to Turn Tracking OFF. Press DOWN arrow key repeatedly until AGC falls about 100
counts, note current AZ position (You should have moved the antenna 1/3 to ¾ of a degree
depending on antenna size and frequency band). Observe the Conscan signaling in the lower left
of the display, if the system is operating in Conscan tracking mode the signaling should be
6 ’s.
Press AUX1 to turn tracking ON and verify that the antenna does return to the previous AZ position
and the peak AGC level.
3
Press AUX1 to Turn Tracking OFF. Press ANTENNA to select Elevation entry menu and note
current AGC level. Press UP arrow key repeatedly until AGC falls about 100 counts, note current
EL position (You should have moved the antenna 1/3 to ¾ of a degree depending on antenna size
and frequency band). Observe the Conscan signaling in the lower left of the display, if the system
is operating in Conscan tracking mode the signaling should be
2 ’s. Press AUX1 to turn tracking ON
and verify that the antenna does return to the previous EL position and the peak AGC level.
4
Press AUX1 to Turn Tracking OFF. Press ANTENNA to select Elevation entry menu and note
current AGC level. Press DOWN arrow key repeatedly until AGC falls about 100 counts, note
current EL position (You should have moved the antenna 1/3 to ¾ of a degree depending on
antenna size and frequency band). Observe the Conscan signaling in the lower left of the display, if
the system is operating in Conscan tracking mode the signaling should be
8 ’s. Press AUX1 to turn
tracking ON and verify that the antenna does return to the previous EL position and the peak AGC
level.
If the antenna does not drive properly or if Tracking does not return the signal to “peak” refer to the
Troubleshooting Section of this manual.