Click here to make tpub.com your Home Page

Page Title: Transponder Set AN/APX-44 Tests
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

TM 11-6625-667-12/NAVAIR 16-30APM-123-1/TO 33A1-3-367-1
d. Set the 28 VDC-115 VAC-OFF power switch to
a. Preliminary Panel Control Settings. Set the trans-
ponder set receiver-transmitter MODE 2 toggle
115 VAC if an ac power source is used or to 28 VDC if a
switches to OFF. Set the controls of Transponder Set
dc power source is used. The POWER indicator should
Control C-2714/APX-44 as outlined in the chart below.
light. Allow the test set to warmup for approximately
2 minutes.
Control
Position
Master control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NORM.
e. Press the PUSH TO TEST switch and rotate to
Function control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MOD.
LOCK position. The ACCEPT indicator should light. If
I/P switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF.
the REJECT indicator lights, the test set requires high-
MODE 2 0N-OFF switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF.
er level maintenance.
MODE 3 0N-OFF switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OFF.
Set the ISLS switch to ON. The ACCEPT indicator
MODE l code control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00.
MODE 3 code control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00.
should remain lighted.
b. Systems Tests. Set the test set FUNCTION switch
g. Set the ISLS switch to OFF.
h Release the PUSH TO TEST switch by moving
to SYSTEM and proceed as follows:
(1) Use the chart below to set the mode controls of
from LOCK position. The ACCEPT indicator should go
out.
the test set and C-2714/APX-44 for the desired mode.
i Turn FUNCTION switch to SYSTEM and MODE
C-2714/APX-44
Test Set MODE
switch to 4.
Mode
control Position
Control
Setting
MODE 2
2
2
ON
j. Briefly depress the PUSH TO TEST switch. The
MODE 3
OFF
REJECT indicator should light. If the ACCEPT indica-
MODE 3
3
3/A
ON
tor lights, the test set requires a higher level mainte-
MODE 2
OFF
nance.
(2) The maximum code range for a particular
2-9. Transponder Set AN/APX-44 Tests
Transponder Set AN/APX-44 mode is shown in the
The operating control positions (code mode, etc) of the
chart below. The transponder set mode 2 code toggle
test set must agree with the operating control positions
switches are located behind the receiver-transmitter
front panel cover. All other code controls are on the
of the transponder set under test. Perform the
preliminary test setup for radiation operation (para
C-2714/APX-44. Use the chart below to set the code
2-7a) starting procedure (para 2-8), and proceed as
controls of the test set and transponder set for the
follows:
desired code.
AN/APM-44
Maximum
Mode
Test Set CODE AB-CD
Control Setting
Code Range
Setting
Control
1
00-73
0000-7300 (CD always 00)
MODE 1
00-73
2
0000-7777
Selected four digit code number (0000-7777).
Receiver-transmitter mode 2 toggle switches.
Four digit code number
3
00-77
0000-7700
MODE 3
00-77
(3) Press the test set PRESS TO TEST switch. The
coder, or antenna is abnormal.
ACCEPT indicator should light. If the REJECT indica-
(5) Move the test set 10 feet closer to the aircraft
tor lights, the coder operation is abnormal; perform the
transponder set antenna. Set the FUNCTION switch to
procedure given in (4) below and then perform the pro-
SYSTEM. If the ACCEPT indicator lights, the trans-
cedures given in (5) and (6) below as applicable.
ponder set power output is abnormal. If the REJECT
(4) Press and turn the test set PRESS TO TEST
indicator lights, the coder operation is abnormal or the
switch to LOCK, and set the test set FUNCTION
antenna system is defective. To determine the defec-
switch to FREQ-POWER. If the ACCEPT indicator
tive component, perform the procedure in (6) below.
lights, the transponder power output is normal and the
coder operation abnormal. If the REJECT indicator
CAUTION
lights, perform the procedures given in (5) and (6)
The test set must not be closer than 20 feet
below to determine whether the aircraft transponder,
from the aircraft transponder set antenna
Change 3 2-9

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business