Hughes Network Systems 38HL-001 ユーザーズマニュアル
1027145 – 0001 Revision D
Installing ODUs 4–23
Hub installation
To adjust the antenna elevation (upward or downward pointing
direction), you rotate the antenna upward or downward, as
illustrated in figure 4-18, until the elevation is set as desired.
direction), you rotate the antenna upward or downward, as
illustrated in figure 4-18, until the elevation is set as desired.
Antenna
(front)
Side view
0 elevation
°
Downward
elevation
elevation
Upward
elevation
elevation
T0006006
Figure 4-18
Antenna elevation adjustment
(upward or downward adjustment)
Follow the steps below to adjust the antenna to the elevation angle
specified on the configuration document.
specified on the configuration document.
First obtain a coarse elevation adjustment:
1.
Rotate the antenna until its elevation angle (angle from
horizontal) is approximately the same as the specified
elevation angle.
horizontal) is approximately the same as the specified
elevation angle.
This is a coarse elevation alignment—for now you can
approximate the antenna’s elevation angle by sight. Usually,
the specified elevation is close to horizontal (near 0
approximate the antenna’s elevation angle by sight. Usually,
the specified elevation is close to horizontal (near 0
°
).
If the antenna does not rotate freely, loosen each of the
antenna bracket nuts slightly.
antenna bracket nuts slightly.
2.
Finger tighten the reflector bracket locking nuts (again),
so the antenna is snug and without excess movement.
so the antenna is snug and without excess movement.
4.9
Adjusting the
antenna elevation
antenna elevation
Coarse elevation
adjustment