Wavetek Wandel Goltermann CLI-1450, Руководство по эксплуатации

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D-1
MODEL CLI-1450
INTRODUCTION
Regardless of the type of vehicle-mounted antenna used, several
variables come into play that could cause a change in measured
field strength. The position of the antenna on the truck will affect
the ground plane and, therefore, the pattern of the antenna. There
may be reflections from other devices mounted on the vehicle
(ladder racks, etc.). Even the length of the lead from the antenna to
the meter will have an effect on the measurement. For these
reasons we recommend using a calibrated leak to correlate each
vehicle's measurement system.
It is sometimes desirable to use a vehicle-mounted monopole
(VMA-3) or dipole antenna for monitoring and measuring relative
leak intensity. If you're using some other antenna other than the
VMA-3, you should set up a calibrated leak for verification of
accuracy and calibration of the system, which includes the
CLI-1450 and whatever antenna and configuration you choose to
use. The following procedure describes a setup for this method.
D
Appendix D:
Setting Up A
Calibrated Leak
Field