9
190-00607-02 Rev C
Detailed Operation
Radar
unit
GWX 68 Art2000 rS 181A/rS 811A
Bearing (°)
L - R L - R
NA
Gain Control
Available in MAP mode with the GWX 68,
ART2000, and RS 181A/RS 811A; and also in WX
mode with the GWX 68. In the GWX 68, the gain
settings are set separately for the Map and WX modes.
The gain is used to adjust the sensitivity of the radar
receiver. It can be used in map mode to adjust the
characteristics of the returns from the surface.
While in the Ground mode, the gain is adjusted
using the
Gain +
and
Gain -
keys. Pressing a Gain
adjustment key will show a Gain bar graph. The white
reference line on the right side of the bar graph is only
present in the GWX 68. Values are shown in decibels
in the table below.
Automatic Radar Gain Control (GWX 68)
Manual Radar Gain Control (GWX 68)
Manual Radar Gain Control
(ART2000/2100 and RS 181A/RS 811A)
GWX 68
Art2000/2100 rS 181A/
rS 811A
Gain
(dB)
-2 - +.
(Weather and
Map modes)
-1. - 0
(Map mode only)
-1. - 0
(Map mode
only)
Hold Control
The Hold mode is used to freeze the display. While
in the hold mode, the green RDR indicator flashes
indicating that the display is not being updated, but
the radar is continuing to transmit.
cursor Pre-Select operation (GWX 68 and
Art2000/2100 only)
Cursor pre-select option can be used to pre-select
a Bearing Line or Antenna Tilt angle prior to switch-
ing the vertical or horizontal scan mode of the display.
The cursor is a cyan line extending along the Radar’s
projected path and can be displayed in both the hori-
zontal and vertical modes.
For example, if horizontal scanning is occurring,
a cursor line can be activated to pre-select a specific
bearing to a weather cell of interest. Once selected,
changing the scan mode to vertical will automatically
set the bearing of the vertical sweeps to the bearing
previously indicated by the cursor line.