Cessna 172P - Page 348

22
CESSNA
4OO TRANSPONDER,
PILOT'S OPERATING
HANDBOOK
AND
ALTITUDE
ENCODER
(BLIND)
SUPPLEMENT
l2
3 15
67
0
1. FUNCTION SWITCH
-
Controls a,pplica,tion of
power
and selects transponder
opereting
mode ês follows:
OFF
SBY
ON
ALT -
Turns set off.
Turns
set on
for
equipm€nt
wa,rm-up
or standby
power.
Tu¡ns set
on
and
enables
transponder to
trensmit Mode A
(a,ircra,ft
identification)
reply
pulses.
Turns
set on and enablee traasponder
to
tre,nsmit
either Mode A
(eircreft
idontification) reply
pulses
or Mode C
(altitude
reporting)
pulses
select€d eutome,tica,lly
by the
interroga,ting
signal.
2
2. REPLY LAMP
-
Lamp flashes to indicate
trensmission
bf reply
pulses; glows
steadily
to indicate transmission
of IDENT
pulse
or
eatisfactory self-test opera-
tion.
(Reply
lamp
will
also
glow
steadlly during initial warm-up
period,)
Figure
1. Cossna 400 Transponder and Altitude
Encoder
(Blind)
(Sheet
1
of
2)
30
May 1980