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 T.O. 12P4-2APX-192
NAVAIR 16-35TS1843-1
TM 11-6625-1646-25
on the associated Transponder Set Control (MODE 1, 2. 3 A
1-15. A list of the semiconductors used in the test set, along
or C in TEST position). These Interrogation pulses are routed
with their respective reference designation part number, and
to the transponder, which in turn will reply If the receiver
function, are listed in table 1-2.
frequency, sensitivity, and decoding are proper. The test set
1-16. INDEXES OF PUBLICATIONS (ARMY).
will receive the transponder reply and proceed to analyze the
1-17. Refer to the latest issue of DA Pam 310-4 to determine
reply for proper bracket pulse spacing, frequency, power, reply
whether there are new editions. changes, or additional
rate and antenna VSWR. If the transponder reply is within the
publications pertaining to the equipment.
desired tolerances, a go indication is given. An improper reply
1-18. Refer to the latest issue of DA Pam 310-7 to determine
will give a no-go indication.
whether there are modification work orders (MWOs) pertaining
b.
Monitor Function.
The test set, when
to the equipment.
functioning as a monitoring device, analyzes the transponder
1-19. FORM AND RECORDS (ARMY).
replies to interrogations transmitted by external interrogators.
1-20.
REPORTS
OF
MAINTENANCE
AND
The transponder replies are analyzed for proper bracket pulse
UNSATISFACTORY EQUIPMENT. Use equipment forms and
spacing.
frequency, power and antenna VSWR.
The
records In accordance with Instructions In TM38-750.
evaluation of the transponder Is indicated by a GO. NO-GO
1-21.
REPORT OF PACKAGING AND HANDLING
indication.
DEFICIENCIES (ARMY). Fill out and forward DD Form 6
1-10. INSTALLATION.
(Reporting of Packaging and Handling Deficiencies) as
prescribed In AR 700-58.
1-11. The installation instructions for the TS-1843A (figure 1-
1-22. DISCREPANCY IN SHIPMENT REPORT (DISREP) (SF
361) (ARMY). Fill out and forward Discrepancy In Shipment
aircraft that the test set is to be Installed in. The variety of
Report (DISREP) (SF 361) as prescribed in AR 55-38.
associated transponders that can be used with the test set
1-23. REPORTING OF IMPROVEMENTS FOR EQUIPMENT
also greatly affect the installation instructions. For detailed
MANUALS (ARMY). Reporting of errors. omissions, and
installation instructions. reference can be made to the specific
recommendations for improving this publication by the
aircraft and transponder manuals.
individual user is encouraged. Reports should be submitted on
1-12. LEADING PARTICULARS.
DA Form 2028. DA Form 2028 will be forwarded direct to
1-13. The leading particulars pertinent to the test set are listed
Commanding General. U.S. Army Electronics Command,
in table 1-1.
ATTN: AMSEL-ME-NMP-AN, Fort Monmouth. New Jersey
07703.
1-14. SEMICONDUCTOR COMPLEMENT.
Table 1-1. Leading Particulars
ITEM
CHARACTERISTICS
TOLERANCE
Interrogation Output
Frequency
1030 MHz
0.5 MHz
0.1 usec
Modes
1
2 pulses spaced 3 usec
0.1 usec
2
2 pulses spaced 5 usec
0.1 usec
3A
2 pulses spaced 8 usec
0.1 usec
C
2 pulses spaced 21 usec
Output level
-54 to -81 dbm (-67 to -94 dbv)
2 db
Rate
400 pps
50 pps
Reply Analyzer
3.0 MHz
Frequency
GO
1090 MHz
NO-GO
1090 MHz 4.0 MHz
Bracket Spacing
GO
20.3 usec 0.15 usec
NO-GO
20.3 usec
0.3 usec
Power
GO
20 to 28 dbw
+2 dbw or greater than
control setting (RF IN.
NO-GO
20 to 28 dbw
-2 dbw or less of control
setting (RF IN, figure 1-2)
1-3
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