Odu Mounting; Tools - NEC iPasolink 200 Manual

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.
Attachenent Position of
System
O-Ring (Between:)
ANT ⎯ ODU
1+0
ANT ⎯ WG/ODU
(18-38 GHz BAND)
ANT ⎯ Hybrid/Coupler
1+1
ANT ⎯ WG/Hybrid/Coupler
(18-38 GHz BAND)
Note
Installation
Submission Prohibited
NEC Internal Use Only
Table 5-1 Tools

Tools

Wrench or Monkey Wrench
Screwdriver
Torque Wrench
Small Size
Not used
Used
Not used
Used
11/13/15 GHz antenna for direct mount is not possible to connect the
ordinary waveguide flanges.
5. ODU MOUNTING
O-Ring
Large Size
Used Antenna direct mounting
Not used Waveguide connection
Used Antenna direct mounting
Not used Waveguide connection
5-1
Remarks
NWD-107460-02E