Cessna 172P - Page 260

10
DME
(TYPE
190)
PILOT'g OPERATING
HANDBOOK
SUPPLEMENT
2
34561
2
t0 I
1. READOUT
WINDOW
-
Dleplaya functlon
readout ln nautical
miles
(distance-to-
sta,tion), minutes
(time-to-statlon)
or knote
(ground
speod).
2. R-NAV INDICATOR
LAMP
-
Tbe
green
R-NAV indicator
lamp
ie
provided
to
indicate
the
DME
ls coupled
to an
R-NAV system.
Since thie DME 190
is only
factory
ln8telled
wlth an
R-NAV
511
syst€m on
Cessna airplanes,
the R-NAV
indicator lamp
wlll nêvêr be
illuminated.
However, lf
a compatlble R-NAV
ÊyÊtem is
coupled to the
DME, a¡d
when
tD
R-NAV
mode, the R-NAV lamp
wlll
light whloh lndlcate¡
that
tùe dlstence
readout iÊ
tlro
"way
point"
in¡tead of the
DME station. The
DME oen only
give
distanoo
(MILES)
in R-Nav mode.
3. REMOTE
CHANNELING
SELECTOR
-
lwo
position
aeleator, In
the flrst
posi-
tion, the DME will
utiltzo
tl¡o froqu€ncy
Eot by tho DME chennoling
knob8.
In the
second
positlon,
the MHz dlgite
will utillze
the frequency
s6t by the
NAV 1 unlt's
channeling
knobs.
4.
WHOLE MEGAHERTZ
SEITECTOF KNOB
-
Selects
operating
frequency ln 1-
MHz eteps between 108 and LL7 NlIIz.
5. FREQUENCY
INDICATOn
-
ShortrE
op€reting
frequency selectêd
on the DME or
displays rêmote
(nI¡M)
flag to lndlcat€ DME
ls operatlûg on a frequoncy
Beloctêd
by tho romote NAV 1
reoeiver.
L FRACTIONAL
MEGAHEFTZ SELECTOR
KNOB
-
€lelects operating frequency
in 50 kHz steps. Thls knob hae
two
positione,
ono for the
0
and
on€ for tho õ.
7.
FRACTIONALMEGAHERTZ
SELECTORKNOB
-
Selectsoperatingfrequenoy
in tenths of a Megahertz
(0-9).
F igure 1. DME 190
Operating
Controls
(Sheet
1 of
p)
30 May
1980