Ver.
CHAPTER 2. Installation of RRH-P4
2-20
© SAMSUNG Electronics Co., Ltd.
2600-00CTEIGAA
4.0
Checking Feeder line Connection
After connecting the feeder line, perform the continuity test and feeder cable return loss to
check if the feeder cable is changed and measure VSWR of antenna and feeder cable.
Take measurements for the sections
- for all of the cables.
The standing wave ratio must be equal to or less than the reference value. If not, the cable
must be removed, measured for each section again, and necessary actions be taken.
VSWR Standard
The standing wave ratio (VSWR) of the cable and connector between the system’s
RF port to the antenna port must be smaller than 1.5 (return loss: 14 dB).
If a separate standard has been established with the career, the established
standard will take precedence.
Identification tag installation
Attach the identification tag in the below table to the feeder line.
Table 2.2 GPS Identification Tag of Feeder line
Category
Description
Installation position
Attach the identification tag to the both ends of the antenna.
Materials
Use the material of aluminum coated by vinyl for the identification tag.
Fixing method
Fix the feeder cable to the 2 holes on the identification tag with the black
cable tie.
Marking
The markings must be prevented from being erased by using relief engraving
or coated labels.
Antenna
System’s external ‘I connector’
connection
