VAF GV900W, Руководство пользователя

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VAF Adjustable Band Selective Repeater
VAF Corp.
Data Communication
Tell:44655121 Fax: 44658496
antenna while its coverage must be ensured. For isolation degree, the
greater, the better.
(2) Selection of band
Set to corresponding frequencies by using the monitoring and control
software of the repeater.
(3) Field intensity test and level adjustment.
Level adjustment is important in the opening of wireless transmission
repeater construction, especially for downlink passage. First, test field
intensity of the signal of the base by donor antenna and then adjust the
uplink and downlink gains according to the field intensity of the signal so
that the downlink output shall meet the requirements of coverage.
Meanwhile, adjust corresponding uplink and downlink gains.
(4) Sealing of joints of feed lines:
it is suggested that it should be powered up first and test the level to
see if it is normal before the sealing of joints of feed line of antenna.
Clean the joint’s inner part before installation of it, check and see if the
length of cable core and their left or right position are correct and then
fix them. Check if the joint is fastened before sealing.
(5) Lightning protections
The location of wireless transmission repeater is usually in high
buildings or at the top of mountain and is connected to the antenna by
feed line. Thus it should have reliable lightning protection. The lightning
protections of wireless transmission repeater include the followings:
ƒ
Cases, antenna bases and cables must be reliably grounded.
ƒ
Inlet power cables must be protected against lightning.
ƒ
The lightning protection of antenna.
(6) Grounding of Equipment
Peel off the plastic skin of the feed line with special tools according to
the requirements of the process and leave a 6 to 7cm cut. Do not hurt
the inner ripple copper tube. Fasten it with copper braided tape to ensure