Andrew manual Step Step Step Elevation and Azimuth Adjustments, ES45T-TReflector Assembly

ES45T-T Reflector Assembly

Step 15

Step 16

Step 17

Elevation and

Azimuth

Adjustments

Step 1

Step 2

Step 3

Step 4

Step 5

Set fine elevation and azimuth strut positions based on the procedure performed in the Elevation and Azimuth Adjustment section.

•If fine alignment is not performed at this time, continue the assembly procedure at Step 16.

Securely tighten U-bolts and elevation strut mounting hardware.

Remove both fine adjustment assemblies and store in a weather protected location for future use. Continue with feed system and corresponding LNA installation.

You have now completed the attachment of the reflector to the tripod ground mount assembly. Proceed to the Elevation and Azimuth Adjustments section for instructions on pointing your antenna to its satellite.

Proper antenna pointing requires specific coarse and fine elevation and azimuth strut length adjustments which can be determined using the graphs provided in Appendix F. Adjustable azimuth and elevation struts are initially set in coarse setting as near as pos- sible to pre-determined lengths. Fine elevation and azimuth settings are accomplished with threaded rod on elevation and azimuth struts.

CAUTION

Never loosen strut set screws and fine adjustment assembly U-bolts simultaneously. Doing so may result in severe bodily harm and equipment damage.

Coarse Elevation Adjustment. Station at least two installers at reflector rim to provide temporary reflector support while third installer loosens two U-bolts on each end of ele- vation pivot assembly (P/N 49635) and removes 3/4 x 4-1/2 inch (114 mm) bolt, lock- washer and nut connecting elevation strut to bottom of main triangle assembly. Carefully lower reflector to vertical position.

Determine required length of elevation strut to nearest degree increment of desired ele- vation setting. Adjust coarse elevation setting by withdrawing secondary and, if neces- sary, tertiary strut sections from primary strut to achieve required strut length. Install eight 1/2 inch (13 mm) set screws in holes provided and securely tighten. Note: Do not extend secondary or tertiary strut sections into red warning areas.

Carefully raise reflector and attach elevation strut to bottom of main triangle assembly using previously removed 3/4 x 4-1/2 inch (114 mm) bolt, lockwasher and nut. Note: Mechanical means or fine adjustment assembly may be used to achieve elevation angles greater than 30°.

Coarse Azimuth Adjustment. Loosen to U-bolts on both upper (P/N 49630) and lower (P/N 49629)azimuth axis joints. Remove 3/4 x 4-1/2 inch (114 mm) bolt, lockwasher and nut connecting azimuth strut to U-bracket (P/N 49704).

63 Installation Procedures