nonresident training course - Historic Naval Ships Association

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Figure 1-9.—The waveform symbol equipments (PA/SG) interface path, signals: X-axis waveforms, Y-axis waveforms, and Z (unblinking) signals. The symbol is painted in a timing period called P-time. The symbol generator, using a series of P-time interval signals, develops the proper waveforms to be sent to the CRT deflection amplifiers and video amplifiers. When the symbol generator starts its P-time counter, a signal is sent to the display console that starts an identical counter in the console. This ensures that both equipments are synchronized. Figure 1-10 shows the development of a symbol using the X, Y, and Z waveforms. The symbol is formed during the unblanked P-time intervals. The symbol shown in figure 1-10 is actually a combination of three symbols: air unknown, rocker, and full upper bar. The unblank times have been given reference letter designations to aid you in following the mechanization process. During unblank time A, the rocker is formed. Figure 1-11 illustrates this process on an X/Y plot. When the unblank signal is high, the X sine wave is at its negative point and transitions to its positive point. At the same time, the Y waveform is at zero and transitions its negative cycle, and returns to zero. During unblank B, the Y waveform provides the proper position for the upper bar, while the X waveform transitions from negative to positive. The unknown air symbol is formed during unblank time C. Note that with the trapezoid waveform, X remains at a constant negative level, while Y goes from zero to the positive level. This draws the left vertical side of the symbol. When Y reaches its positive level, X starts a transition from negative to positive to draw the top of the symbol. The right side of the symbol is formed when the Y waveform goes in a negative direction to zero, while X remains at a constant positive level. The dot is formed at unblank time D by unblinking X and Y at the zero level. At the completion of the P-time, the console returns control of the CRT beam to the radar scan logic. The symbol remains displayed on the screen as long as the persistence of the screen phosphor permits. For the symbols to remain flicker free, they must be periodically refreshed, or repainted, by repeating the process just described. Symbols are refreshed 15 to 20 times per second. 1-10
Figure 1-10.—Development of an analog waveform symbol. Figure 1-11.—The mechanization of an analog waveform symbol. 1-11
Page 1 and 2: NONRESIDENT TRAINING COURSE July 19
Page 3 and 4: PREFACE By enrolling in this self-s
Page 5 and 6: CONTENTS CHAPTER PAGE APPENDIX 1. B
Page 7: PASS/FAIL ASSIGNMENT PROCEDURES If
Page 11 and 12: CHAPTER 1 BASIC DISPLAY DEVICES AND
Page 13 and 14: voltage of the control grid varies
Page 15 and 16: Figure 1-4.—Noninter1aced scan of
Page 17 and 18: DISPLAYING RADAR SWEEP, VIDEO, AND
Page 19: Figure 1-8.—The AN-UYQ-21(V) symb
Page 23 and 24: zero, one, two, or three grid point
Page 25: two major types of deflection syste
Page 28 and 29: horizontal and vertical timing sign
Page 30 and 31: Liquid crystals have been used for
Page 32 and 33: . . . sticking, the key can be remo
Page 35 and 36: CHAPTER 3 THE DATA DISPLAY GROUP AN
Page 37 and 38: Figure 3-1.—The AN/UYA-4(V) data
Page 39 and 40: channel. Each of the ship’s senso
Page 41 and 42: Figure 3-7—The input data word fo
Page 43 and 44: Figure 3-12.—The 48-label readout
Page 45 and 46: CDS computer. Display consoles in t
Page 47 and 48: Figure 3-16.—PPI console control
Page 49 and 50: Figure 3-19.—A PPI equipped with
Page 51 and 52: Figure 3-22.—A PPI console commun
Page 53 and 54: DISPLAY SYSTEM SIMULATION AND TESTI
Page 55 and 56: Test Pattern Mode The test pattern
Page 57 and 58: Figure 3-26.—An electronic plug-i
Page 59 and 60: CHAPTER 4 THE COMPUTER DISPLAY SET
Page 61 and 62: The Computer Display Set AN/UYQ-21(
Page 63 and 64: Figure 4-5.—Central data buffer (
Page 65 and 66: azimuth data are decoded for ∆Χ/
Page 67 and 68: amplifies the video signals to the
Page 69 and 70: from the graphics processor is rece
Page 71 and 72:
Figure 4-14.—The basic display un
Page 73 and 74:
trains from the RAC, counts the pul
Page 75 and 76:
Figure 4-19.—A Display Control Co
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Monitor Deflection Function.— The
Page 79 and 80:
the fiber-optic substrate of the li
Page 81 and 82:
O-data receivers Input/output (I/O)
Page 83 and 84:
DUAL TELEVISION SCAN CONVERTER (DUA
Page 85 and 86:
APPENDIX I LIST OF ACRONYMS ACDS—
Page 87 and 88:
APPENDIX II REFERENCES USED TO DEVE
Page 89:
Detailed Functional Theory and Refe
Page 92 and 93:
P Personal computers, 2-1 input dev
Page 95 and 96:
ASSIGNMENT 1 Textbook Assignment:
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1-17. Developing the display or pic
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1-35. 1-36. 1-37. What geometric sh
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1-52. 1-53. 1-54. 1-55. The RGB mon
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1-70. Which of the following keys w
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2-8. Which of the following signals
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2-27. 2-28. 2-29. 2-30. 2-31. Displ
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2-45. The console can provide the o
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2-63. Which switch is used to contr
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ASSIGNMENT 3 Textbook Assignment: T
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The signs 3-16. of ∆Χ and ∆Υ
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3-34. Which functional area compile
Page 119 and 120:
3-53. 3-54. 3-55. 3-56. 3-57. Which
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3-71. 3-72. What equipment provides
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nonresident training course - Historic Naval Ships Association

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