Wavetek MS1300 Spécifications télécharger pdf (Page 95)

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.

Appendix D:

Setting Up A

Calibrated Leak

Field

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Wavetek MS1300 Spécifications Page 95