MRV Communications TS700/G 用户手册

M R V C o m m u n i c a t i o n s , I n c . – I n s t a l l a t i o n M a n u a l

Site Survey

The first step before every installation is to visit the sites to be linked. in
order to make sure that the connection is feasible, to find out potential
obstacles or difficulties and to decide on the location and mounting
points of the transceivers.

Line of Sight

A necessary condition for linking two distant buildings is that the two mounting
sites must be within clear sight of each other.

Pay attention to:

Growing vegetation and increasing
foliage during spring

Building sites (cranes movements, etc.)

Chimneys (intervening smoke can
interrupt the beam from time to time).

Orientation

Direct sunlight can overload the airlink receiver to saturation level. Avoid, as far as
possible, the East-West direction for the link.

Note

In case this is not possible, the surrounding buildings could shield the
transceiver from the direct sunlight otherwise outages lasting several

minutes (depending on the time of the year and the angle of the sun)
could occur. The system will fully recover once the sun is out of the

receiver field-of-view.

Location & Range

1. The mounting of the transceiver must be very rigid (preventing

the installation from twists of even as little as 1 mrad). The key
to the required rigidity is to attach the mounting accessories on

strong mounting points such as:
- Stiff building structures

- Concrete or reinforced concrete surfaces

Chapter