The 60-second warmup period can be
monitored upon power up of the system.
When the knob is switched directly from
OFF to ON mode, the display will blank. As
the radar sweeps the blue/white will grow
outward. Just before the warm-up period
is complete, the screen will turn black for a
few seconds, then the radar will begin
transmitting and the screen will display
radar returns. No radar transmissions
occur until the warmup period is complete.
(c) Test (TST). The multicolored arc
display test pattern is displayed in this mode of
operation. The test pattern is initialized and sized to fit
the 80 nm range and can also be scaled with the
range select buttons. No radar transmissions occur
while TST is selected. TEST will appear in the lower
left of the display. STAB OFF is always displayed in
(d) SBY. Fully energizes the system
circuitry but no radar transmissions occur in the SBY
mode of operation. The antenna is parked at 0°
azimuth and 30° tilt down with the antenna drive
(e) OFF. Removes primary power from
the radar indicator, but the radar still has power
applied. The radar will remain active with no radar
transmissions occurring, for up to a maximum time of
30 seconds. This time delay allows time to park the
antenna at 0° azimuth and 30° tilt down.
(3) Range ( RNG) Buttons. Clears the
display and advances the indicator to the next range.
The upper button increases range; the lower button
decreases it. The RDR 2000 display range is: 10, 20,
40, 80, 160, 240 nm. The selected range is displayed
in the upper right corner of the display with the range
ring distance displayed along the right edge.
(4) Track (TRK) Buttons. Provides a yellow
track centerline for vertical profile. With the radar on
and a track button pushed, the track-line position
moves left or right in 1° increments at a rate of about
15° per second. When Vertical Profile mode is
selected, the antenna scans the slice at the track line
azimuth position. While in Vertical Profile mode, the
TRK buttons move the slice left and right. The
azimuth position of the antenna is displayed on the
upper left corner of the indicator.
(5) TILT Knob. Permits manual adjustment
of antenna tilt 15° up or down for best indicator
presentation. The tilt angle is displayed in the right
corner of the display.
(6) GAIN Knob. The gain knob adjusts the
radar gain from 0 to 20 dB (CCW rotation reduces
gain). The gain knob will only function when in the
indicator in navigation mode so that preprogrammed
waypoints may be displayed. If other modes are also
selected, the NAV display will be superimposed on
them. The radar will display weather when NAV is
selected if the radar selector is in the ON position.
(8) Ground Mapping (MAP) Button. Places
the radar system in ground mapping mode. Gain
control capability is configurable at installation to be
enabled or disabled in ground map mode. Ground
map colors are green for weak returns, yellow for
moderate returns, and magenta for intense returns.
MAP will appear on the lower left of the display.
(9) Vertical Profile (VP) Button. Selects and
deselects the Vertical Profile mode of operation.
When VP is selected on the indicator the radar will
provide a vertical scan of ± 30° at the location of the
horizontal track line. Selecting the VP mode of
operation will not change the selected mode of
operation: TST, Wx, WxA, or GND MAP. Once in VP,
these modes may be changed as desired. VP will
engage from the NAV MAP mode, but NAV data will
not be displayed during operation.
(10) Weather / Weather Alert (Wx/WxA)
Button. Alternately selects between the Weather (Wx)
and Weather Alert (WxA) modes of operation. Wx or
WxA will appear in the lower left of the display. When
the WxA mode is selected, magenta areas of storms
flash between magenta and black at a 1 Hz rate.
c. Fault Annunciations.
If a fault occurs, the fault annunciation will be
presented on the display unit. The two general
categories of faults are hard failures and soft
Hard failures are those which occur when a
major function of the system is lost. Hard failures are
typically a total loss of transmitter power, receiver gain,
or no antenna scan. TURN OFF SYSTEM. Refer to
Table 3A -3 for hard failure annunciations.
Should the system be left on, further
damage to other system components could