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Page Title:
Emergency Tests (Military and Civil). |
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 TM 11-6625-667-12/NAVAIR 16-30APM-123-1/TO 33A1-3-367-1
b. Systems Test. Set the test set FUNCTION
C-6280A(P)/APX
Test set MODE
switch to SYSTEM and proceed as follows:
MODE
control position
Control
Setting
(1) Use the chart below to set the mode
2
2
M-2
ON
controls of the test set and C-6280A(P)/APX
M-1, M-3, M-C
OUT
MODE 4
OUT
for the desired mode.
3/A
3/A
M-3
ON
M-1, M-3, M-C
OUT
C-6280A(P)/APX
MODE 4
OUT
Test set MODE
MODE control position
Control
Setting
1
M-1
1
ON
(2) Use the chart below to set the code con-
M-2, M-3/A, M-C
OUT
trols of the test set and transponder set for the
MODE 4
OUT
desired code.
C-6280A(P)/APX
MODE
Test set CODE controls A,B,C,D setting
Control
Setting
1
0000-7300 (CD always 00)
MODE 1
00-73
2
Selected four digit code number (0000-7777)
Receiver transmitter mode 2
Four digit code number
toggle switches.
3/A
0000-7777
MODE 3/A
0000-7777
(3) Perform the procedures outlined in
and the test set FUNCTION switch to EMER.
paragraph 2-9b(3).
Use the chart below to set the mode and code
controls of the test set and transponder set.
c. Emergency Tests (Military and Civil).
NOTE
(1) Military emergency tests can be per-
formed in modes 1, 2, and 3/A. Civil emergency
Emergency operation may inter-
tests can be performed in mode 3/A only. Set the
fere with distress signals. Perform the
C-6280A (P)/APX MASTER switch to EMER
tests as quickly as possible.
Test set controls
Transponder Controls
Mode
MODE
CODE
C-6280A(P)/APX
RT-859/APX-72
Setting
1
1
0000-7300 (CD always
M-1 to ON and all
00-73
00).
others to OUT.
2
2
Same as preset for
M-2 to ON and all
MODE 2 code
Preset between 0000-
digits on trans-
others to OUT.
7777.
ponder.
3/A
3/A
7700 (for normal use)
M-3 to ON and all
Preset
7600 (for communica-
others to OUT.
tion failure).
(2) Press the test set PUSH TO TEST
e. Mode C (Altitude) Tests. Mode C tests are
switch. The ACCEPT indicator should light.
performed with the transponder connected to an
auxiliary altitude digitizer or altitude encoder.
(3)
Set
the
C-6280A(P)/APX
master
switch to NORM.
(1) Set the test set MODE switch to C
and FUNCTION switch to SYSTEM.
d. Identity Test.
(2) Set the C-6280A(P)/APX MC switch
(1)
Set
the
C-6280A(P)/APX
IDENT
to ON and all other mode switches to OUT.
switch to IDENT.
( 3 ) If encoder altimeter is used, adjust
(2) Set the test set and C-6280A(P)/APX
BARO set control on face of altimeter until the
code and mode controls in accordance with the
BARO display on face of altimeter indicates
instructions outlined in b(1) and (2) above.
29.92.
(3) Set the test set FUNCTION switch to
I/P and press the test set PUSH TO TEST switch.
( 4 ) Obtain the local barometric altitude
The ACCEPT indicator should light for appro-
from the operations group and refer to the Alti-
ximately 25 seconds.
tude Code Conversion Computer provided or the
2-11
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