Step 15
Step 16
Step 17
Elevation and
Azimuth
Adjustments
Step 1
Step 2
Step 3
Step 4
Step 5
63
Installation Procedures
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).
ES45T-T Reflector Assembly
