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DME
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104
DME
(TYPE
451)
PILOT'S
OPEN,ATING
HANDBOOK
SUPPLEMENT
4
1.
AMBIENT LIGHT
SENSOR
-
Senses ambient
cockpit
light
and controls
bright-
ness
of digital
display
and WPT and
HLD a,nnuncia,tors.
2.
DIGITAL
DISPLAY
-
Displays
dista,nce
to or from
station
(NM),
aircraft
ground
speed
(KTS),
or
time-to-station
(MIN),
depending
on the
position
of the
display
selector
(3).
NOTE
Dashes
will bo observed
on tho
dlspley
untll
station lock-on
occure
in the NM
mode or until
a velocity
of at
lea,Bt
30 knots
is e8teblished
with
lock-on
in the KTS
or MIN
mode,
NOTE
In
all DME modes except nNAV,
aircraft
ground
speed and ti¡ne-to-
station are meaningful
only when
the
aircraft
track is directly
to or
from the
ground
station. The KTS
and MIN indications
require
approximately
1.5 minutes after stâ,tion
acquisition for
finel accu-
ra,cy.
3. DME DISPLAY
SELECTOR
SMTCH
-
Solects
desired
mode rea,douts
as follows:
NM Position: Displays distance to or from the selected
station Ín
nauticel
miles
up to
199.9 nmi.
KTS Position: Displays
aircraft
ground
speed up to 399
knots.
MIN Position:
Displa,ys time-to-station
with a maximum
time of 120
minutes.
Brightness of this switch
is controlled
by the
radio
light
dimming rbeosta,t.
Figure 1. IND-450C
Indicator
(Sheet
1 of 2)
2
6
5
3
2
30 May
1980
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