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PRIMUS
R
660 Digital Weather Radar System
A28–1146–111
REV 2 1-1
Introduction
1. Introduction
The PRIMUS
R
660 Digital Weather Radar System is a lightweight,
X–band digital radar with alphanumerics designed for weather detection
(WX) and ground mapping (GMAP).
The primary purpose of the system is to detect storms along the
flightpath and give the pilot a visual indication in color of their rainfall
intensity. After proper evaluation, the pilot can chart a course to avoid
these storm areas.
WARNING
THE SYSTEM PERFORMS THE FUNCTIONS OF
WEATHER DETECTION OR GROUND MAPPING. IT SHOULD
NOT BE USED NOR RELIED UPON FOR PROXIMITY
WARNING OR ANTICOLLISION PROTECTION.
In weather detection mode, storm intensity levels are displayed in
four bright colors contrasted against a deep black background.
Areas of very heavy rainfall appear in magenta, heavy rainfall in red,
less severe rainfall in yellow, moderate rainfall in green, and little or no
rainfall in black (background). If selected at installation, the antenna
sweep position indicator is a yellow band at the top of the display.
Range marks and identifying numerics, displayed in contrasting colors,
are provided to facilitate evaluation of storm cells.
Selection of the GMAP function causes the system parameters to be
optimized to improve resolution and enhance identification of
small targets at short ranges. The reflected signal from ground
surfaces is displayed as magenta, yellow, or cyan (most to least
reflective).
NOTE: Section 5, Radar Facts, describes a variety of radar operating
topics. It is recommended that you read Section 5, Radar
Facts, before learning the specific operational details of the
PRIMUS
R
660 Digital Weather Radar System.