Aviation Electronics Technician 1 - Historic Naval Ships Association

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Table 3-1.-Correlation of Dial Settings with Pulse PositionIFF TRANSPONDER RESPONSE.— Table 3-1shows the correlation of dial settings with pulsepositions. If you use this table, along with theexamples given in figure 3-20, you will get an idea ofwhat the pulse trains will look like for the variouscodes. Figure 3-21 shows the interrogation and replypulse train characteristics.Mode 4 reply pulse video characteristics aredetermined by the computer. The reply is framed bytwo pulses spaced 23 (±0.05) microseconds apart. Inmodes 1, 2, and 3/A, the presence or absence ofinformation pulses at predetermined spacings isdetermined by the settings on the transponder controlbox. In mode C, this information is determined by theFigure 3-20.-Information pulse train examples.3-18
airspeed-altitude computer. All framing andinformation reply pulses are 0.45 (±0.1) microsecondwide. All modes are transmitted by the RT at afrequency of 1090 MHz.Mode 1.— The reply pulse train consists of fromzero to five information pulses framed by two framingpukes. The spacing between the information pulses isin multiples of 2.9 (±0.05) microseconds from theinitial framing pulse. The position where the sixthinformation pulse would be (17.4 [±0.05] microsecondsfrom the initial framing pulse) is not used.There are 32 different codes available for use from thespecified five information pulses.Mode 2 and 3/A.— When transmitted, these replytrains contain from zero to 12 information pulses, plusthe two framing pulses. The information pulsespacing is in multiples of 1.45 (±0.05) microsecondsfrom the initial framing pulse. The position where theseventh information pulse would be (10.5 [±0.05]microseconds from the initial framing pulse) isnormally not used. There are a possible 4,096different codes available from the specified 12information pulses.Mode C.— When the Airspeed-Altitude Computeris connected in the system, the reply trainconsists of from 1 to 11 information pulses and 2framing pulses. The information pulses are spaced inmultiples of 1.45 (±0.05) microseconds from theinitial framing pulses. The positions where theseventh and the ninth pulses are normally located(10.5 [±0.05] and 13.05 [±0.05] microseconds fromthe initial framing pulse) are not used. When there isa pulse in the thirteenth position (18.85 [±0.05]microseconds from the initial framing pulse), there isa special position indicator pulse also generated in thetrain. This pulse is located 24.65 (±0.05) microsecondsfrom the initial framing pulse. There is atotal of 2,048 possible codes available from thespecified 11 information pulses. When theairspeed-altitude computer is not on-line, the replytrain will be the framing pulses only.Mode 4.— This reply train is determined by theKIT-1A/TSEC.IDENT Function.— The identification-ofposition(IDENT) function is used in modes 1, 2, and3/A. The IDENT function, which can be selected bythe pilot for transmission for approximately20-second intervals, is used to distinguish betweenaircraft displaying the same coding. When used inmode 1, the reply pulse train containing the code inuse is transmitted twice for each trigger puke received.The second train is 24.65 (±0.05) microseconds fromthe leading edge of the first framing pulse of the firstreply train. The IDENT function in modes 2 and 3/Auses the special position indicator (SPI) pulse. The replypulse train containing the code in use is followed by apulse for each trigger received. This SPI pulse is 24.65(±0.05) microseconds from the leading edge of the firstframing pulse of the reply train.Emergency Function.— The EMERGENCYsignals are selected by the pilot to indicate an in-flightemergency. The emergency function is used withmodes 1, 2, and 3/A. For modes 1 and 2, the replypulse train containing the code in use is transmittedonce for each trigger pulse received, followed bythree sets of framing pulse pairs with no informationpukes. The three sets of framing pulses are located24.65 (±0.1), 44.95 (±0.15), 49.30 (±0.20), 69.60Figure 3-21.-Normal reply pulse characteristics.3-19
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PASS/FAIL ASSIGNMENT PROCEDURESIf y
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Student CommentsCourse Title:Aviati
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Table 1-1.-Radio-Frequency Spectrum
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Figure 1-3.-LS-602/AI control panel
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Figure 1-4.-Manchester encoding.thr
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they can complete a full cycle. The
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one-shot circuit output is directly
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Figure 1-7.-VHF-AM control box.Figu
Page 24: indicators in the following text. E
Page 27 and 28: Figure 1-11.-C-9245/ARC-161 control
Page 29 and 30: and the PWR/FILL switch is not in t
Page 31 and 32: panel is in OFF. If the DTS control
Page 33 and 34: the keyboard are sent directly. Rec
Page 35: the signal data converter, where it
Page 38 and 39: Navigation is both an art and a sci
Page 40 and 41: this axis at right angles to it (fi
Page 42 and 43: . Course is the intended horizontal
Page 44 and 45: The standard atmosphere is theoreti
Page 46 and 47: eadings are higher than actual. Thi
Page 48 and 49: The barometric switch in the RAWS a
Page 50 and 51: Major ComponentsThe AN/ARN-84(V) TA
Page 52 and 53: the outputs is used for the automat
Page 54 and 55: DOPPLERIn the following text we wil
Page 57 and 58: CHAPTER 3RADARAs an avionics superv
Page 59 and 60: the antennas will stop at the posit
Page 61 and 62: AS-2146/APS-115 AntennaThe radar an
Page 63 and 64: completes the processing of radar a
Page 65 and 66: In the on-line mode, the sensor sta
Page 67 and 68: Mode SwitchThe mode switch is pract
Page 69 and 70: purpose of the horizon line is to i
Page 71 and 72: Maximum range for tracking is 40,00
Page 73: transmit a reply when RF interrogat
Page 77 and 78: SIF reply code is identical to the
Page 79: In mode 4, the reply video pulse is
Page 82 and 83: sound wave. The frequency (in hertz
Page 84 and 85: to affect the rate of travel of the
Page 86 and 87: DOPPLER EFFECTWhen there is relativ
Page 88 and 89: Figure 4-7.-Transducer installed on
Page 90 and 91: The Sonar Detecting-Range Set AN/AQ
Page 92 and 93: Figure 4-16.-RO-358/ASQ-13A.mechani
Page 94 and 95: applies 115 volts ac to the transmi
Page 96 and 97: are known as angles of dip (fig. 4-
Page 98 and 99: feet in length and represents the f
Page 100 and 101: compensation is needed for the long
Page 102 and 103: labeled ALT COMP. This switch is us
Page 104 and 105: select which signal goes to which p
Page 106 and 107: the passive directional sonobuoy (f
Page 108 and 109: REVIEW QUESTIONSQ1. How was the wor
Page 110 and 111: TACAN signals. When localizer signa
Page 112 and 113: 1. The HEADING NO-GO indicator illu
Page 114 and 115: Figure 5-7.-New optical sight with
Page 116 and 117: computer’s program determines whi
Page 118 and 119: ias circuit, horizontal and vertica
Page 120 and 121: Figure 5-9.-Symbology—Continued.5
Page 122 and 123: Figure 5-14.-Sparrow mode.Figure 5-
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TACTICAL DISPLAY SYSTEM INTERFACEFi
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electrical signal, which varies in
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noise-free at that level. The impor
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Like the random interlace, this sys
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The polarity of the signal develope
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The SEC tube has applications in ex
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CHAPTER 6INFRAREDThe term infrared
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Table 6-1.-Characteristics of IR Ra
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potential difference across a PN ju
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system increases, and the reliabili
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used in the Navy, their principles
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signals from the control servomecha
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Figure 6-15.-FLIR positioning/stabi
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Figure 6-17.-Video converter video
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clamping signals from the sync gene
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shared by both azimuth and elevatio
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where they are converted into three
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go to the azimuth/elevation heat si
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TARGET TRACKING SIGHT CONTROLAs men
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control is injected in this module.
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CHAPTER 7WEAPONS SYSTEMSAs a result
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Figure 7-5.-Master light control pa
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Rocket firing systemWalleye systemA
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The wing-form display is displayed
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Figure 7-15.-Emergency jettison con
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The A/A weapon select switch select
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Part of the system consists of unpr
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Figure 7-22.-SH-3 (series) search a
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ottle and the ECU are mounted on to
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Figure 7-25.-Pylon/rack assembly.ci
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REVIEW QUESTIONSQ1. True or False.
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COMPUTER APPLICATIONSTYPES OF COMPU
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the most important. This data manip
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and other data that are to be used
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to represent the same data that was
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compatibility permits the computer
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most cases, the processing speed fa
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4. Stores the results of manipulati
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An overall check of a computer can
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CHAPTER 9AUTOMATIC CARRIER LANDING
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stabilized deck-coordinated system
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Figure 9-3.-Mode I landing sequence
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Figure 9-5.-Lateral automatic wave-
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Precipitation StaticPrecipitation s
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l Sliding-contact interference. Thi
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the signal applied to it. These spu
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the following methods: short circui
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Figure 10-4.-Internal construction
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Figure 10-9.-Methods for using RC f
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Band-Rejection FiltersA band-reject
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Causes of Static ElectricityGenerat
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composed of carbon particles, impre
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APPENDIX 1REFERENCES USED TODEVELOP
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Chapter 7Airborne Weapons/Stores Lo
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CHAPTER 3A1.A2.A3.A4.A5.A6.A7.A8.A9
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A7. Linking two or more computers t
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FORMULASAIII-2
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AIII-4
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Comparison of Units in Electric and
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Antisubmarine warfare weapons syste
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Electrostatic discharge, 10-15compo
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Heads-up display (HUD), 5-5air-to-a
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NNavigation basics, 2-1airborne nav
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Teletype system, 1-22block diagram,
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Assignment QuestionsInformation: Th
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1-11. What will the Sillumination o
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1-35.1-36.1-37.1-38.UHF-1 does NOT
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1-59. What arethat thetactical1. Fr
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ASSIGNMENT 2Textbook Assignment:
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IN ANSWERING QUESTIONS 2-22 THROUGH
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2-43. What method does the AN/APN-1
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2-64. What distance is the maximum
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3-12.3-13.The antenna position prog
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3-32. The 128 nautical mile range i
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IN ANSWERING QUESTION 3-53,FIGURE 3
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3-74. What is the nominal peak powe
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4-12. Sonar transmission losses can
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4-31.4-32.4-33.When positive gradie
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4-52. The function of the dual curs
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4-71. The angle between a magnetic
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IN ANSWERING QUESTIONS 5-9 THROUGH
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5-29. What component contains theop
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5-51. What type of RF output signal
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6-20. On the HSI, when a tactical m
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6-42. What control(s) the symbolbri
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6-65. Which, if any, of the followi
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7-11. If the temperature of a black
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7-34.A scan mirror is indexed three
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7-56. What is the primary differenc
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8-21. With the landing gear handle
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8-42. With the F/A-18 AIM-9 Sidewin
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8-66. The jettison of wing stores I
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9-13. What method is used to change
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9-36. In magnetic core memories, a
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9-57. What typeaccess toof instruct
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10-12. To maintain the angle-of-att
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10-35. A receiver tuned to 2.4 kHze
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10-55. When rubbed against any of t
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