Cessna 172P - Page 349

22
PILOT'S OPERATING
HANDBOOK CESSNA
4OO
TRANSPONDEA,
SUPPLEMENT
AND ALTITUDE
ENCODER,
(BLIND)
3, IDENT
(ID)
S\ilITCH
-
When
transmltted with transponder
on
ground
controller's display
IDENT
pulse
transmission.)
depressed, seleots
speoial
pulse ldentifler
to
be
reply
to effect
lmmediate
identificatlon
of
aircraft
.
(Reply
lamp witl
glow
steadily during
duration
of
4.
DIMMER
(DIM)
CONTROL
-
Allowe
pilot
to control
brilliance
of reply
lamp'
õ.
SELF-TEST
(TEST)
SWITCH
-
ll/hen
depressed, causes
transponder
to
gen€ra,te a
self-interroga,ting signal
to
provido
a check of
transponder
operation,
(F,eply
lamp wlll
glow
eteadlly to verify self-teet oper&tion.)
6.
REPLY-CODE SELECTOR SWITCHES
(4)
-
Select
assigned Mode
A reply
oode.
7, REPLY-CODE INDICATORS
(4)
- Display seleoted
Mode A
reply code'
8.
REMOTE-MOUNTED DIGITIZER
-
Providos
an
altitude reporting code
ra,nge
of
-1000 fe€t up
to
the airplane's
maximum service
ceillng.
Figure
1. Cessna 400
Transponder
end Altitude
Encoder
(Blind)
(Sheet
2 of 2)
3
30
May 1980