ODU MOUNTING
5-1
Installation
NWD-107460-02E
5. ODU MOUNTING
The procedures for mounting and demounting the ODU are described here. There are
two types of mounting for the Antenna Direct Mounting type and Feeder Connecting
type. The ODU should be installed in the radio station.
The tools for installation are listed in Table 5-1.
Caution.
1.
How to use small and large O-rings are shown in following table. Two
(small and large) O-rings are attached in 18 to 38 GHz band Andrew/RFS
direct mount antenna. 11/13/15 GHz band antenna does not have small O-
ring (Small O-ring is not used for Andrew/RFS direct mount antenna). If the
small O-ring is used for ODU direct mount installation, a gap may occur
between ODU and antenna for RF interface. Therefore it may happen
transmit or receive level down.
2.
Do not apply silicon grease at O-ring.
Note
11/13/15 GHz antenna for direct mount is not possible to connect the
ordinary waveguide flanges.
Table 5-1 Tools
Tools
Wrench or Monkey Wrench
Screwdriver
Torque Wrench
System
Attachenent Position of
O-Ring (Between:)
O-Ring
Remarks
Small Size
Large Size
1+0
ANT
⎯
ODU
Not used
Used
Antenna direct mounting
ANT
⎯
WG/ODU
(18-38 GHz BAND)
Used
Not used
Waveguide connection
1+1
ANT
⎯
Hybrid/Coupler
Not used
Used
Antenna direct mounting
ANT
⎯
WG/Hybrid/Coupler
(18-38 GHz BAND)
Used
Not used
Waveguide connection
Submission Prohibited
NEC Internal Use Only
