Radio Altitude Rising Brown Raster Display; Radio Altitude Digital Readout; Radio Altitude Source Annunciation - Honeywell SPZ-8000 Maintenance Manual

2. C.
(1) (k)
(1)
(m)
(n)
Radio Altitude Rising Brown Raster Display - Another indication
of radio altitude is
given on the barometric altitude tape (see
Figure 205). At 600 feet
AGL, a rising brown raster fills the
background of the altitude tape displacing the normal gray
raster field.
The bottom of the altitude scale corresponds to
600 feet and the baro altitude present value window corresponds
to O feet (Figure 206). The brown raster fills in the scale
proportionally between 600 and O feet AGL.
Radio Altitude Digital Readout - The white radio alt
digital readout and RA label is located to the lower
the attitude sphere. The digital readout comes into
2500 feet and is displayed in 10-foot increments abo~
and 5-foot increments below 200 feet.
tude
right of
view at
e 200 feet
Radio Altitude Source Annunciation - The selected radio
altitude source is not annunciated if it is the normal on-side
source for that indicator. As other sources are selected, a
white side designator (1 or 2) is added to the RA legend. When
the pilot's and copilot's source are the same, it is
annunciated on both displays in amber.
Source selection for
radio altitude is accomplished through the display controller
as shown in Figure 203.
Radio Altitude Reference Set Display - The crew can set a
green radio altitude reference display directly above the
digital radio altitude display. When the actual value of
radio altitude is less than the reference value, the actual
radio altitude value is boxed in white.
The box flashes for
5 seconds after the transition has occurred. The reference
display is set using the display controller asshown in
Figure 205. The reference value is settable to 2500 feet in
10-foot increments above 200 feet and 5-foot increments below
200 feet.
22-14-00
Page 213
Aug 15/91
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