nonresident training course - Historic Naval Ships Association

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the sweep counters in the display console at the same rate. The output of the sweep counters is continuously fed to the deflection circuitry, and the beam will be deflected at 45 degrees. Table 3-1.—The MODE SELECTOR Switch Functions Figure 3-3 shows the front panel of a typical RAC. The RACs installed on your ship may not look exactly like this one. On this particular RAC panel, internal testing is accomplished by using the MODE SELECTOR switch. Most RACs have a similar MODE SELECTOR switch that operates in the same basic manner. When the MODE SELECTOR switch is in the OPERATE position, the RAC operates with its radar. The other switch positions of the front panel are used for maintenance and troubleshooting as shown in table 3-1. The RACs are combined together into a cabinet or cabinets called the radar azimuth converter group. The cabinets provide a common power supply and mountings for several RACs. The output of the RACs are fed to the radar data distribution switchboards (RDDSs). RADAR DATA DISTRIBUTION SWITCHBOARD (RDDS) The radar data distribution switchboard (RDDS) routes radar and sonar antenna position data and timing signals from the sensor RACs to the display consoles. It also receives up to four separate video signals (video levels) directly from each sensor. The RDDS provides the display consoles access to all the sensors connected to the switchboard. The RDDS can accept inputs from 11 radar or sonar sensors and provide outputs to display consoles on 10 output channels, one standard display console per Figure 3-3.—A typical RAC front panel. 3-4
channel. Each of the ship’s sensors can be connected, in parallel, to four switchboards to provide sufficient outputs for each display console in the system. Figure 3-4 shows the front panel of the RDDS. When the VIDEO SELECT or RADAR SELECT switches are in the REMOTE position, switching circuits within the RDDS allow the display console on an output channel to select any of the sensors inputting to the RDDS as the source of its sensor display. The display consoles select the sensor (radar/sonar) and video level by sending control signals to the RDDS. In the event of a console control signal problem, manual selection of sensor and video may be performed at the RDDS front panel. TACTICAL DATA DISTRIBUTION AND DISPLAY Tactical data is digital data received from or transmitted to the CDS computer. Tactical data from the computer (output data) is used by the display system to generate symbol displays and alert/switch indications on the display consoles and alphanumeric displays on the digital display indicator (DDI), also called the auxiliary cathode readout (ACRO). Tactical data going to the computer (input data) results from operator actions (switch depressions, trackball movement, and so forth) at the display consoles. Figure 3-5 illustrates the data path of tactical data. This data path can vary depending on the type of system installed on your ship. Systems using the console internally generated and refreshed symbols (CIGARS) modification will not have a separate — symbol generator. Systems using the direct computer interface (CDI) CIGARS consoles will not have the pulse amplifier/symbol generator. In this section, we examine the format of the different data words and messages used by the CDS system. This is followed by’ a brief description of some of the equipment used to display tactical data. COMPUTER DATA WORD FORMATS consoles. Figure 3-4.—The RDDS front panel. External Function (EF) Word The external function (EF) word is used to interrogate the addressed console for input data. In addition, for CIGARS consoles, portions of the word This section describes the contents and functions of the computer words outputted to the display 3-5
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 and 20: Figure 1-8.—The AN-UYQ-21(V) symb
Page 21 and 22: Figure 1-10.—Development of an an
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: Figure 3-1.—The AN/UYA-4(V) data
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
Page 77 and 78: 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:
Page 97 and 98:
1-17. Developing the display or pic
Page 99 and 100:
1-35. 1-36. 1-37. What geometric sh
Page 101 and 102:
1-52. 1-53. 1-54. 1-55. The RGB mon
Page 103 and 104:
1-70. Which of the following keys w
Page 105 and 106:
2-8. Which of the following signals
Page 107 and 108:
2-27. 2-28. 2-29. 2-30. 2-31. Displ
Page 109 and 110:
2-45. The console can provide the o
Page 111 and 112:
2-63. Which switch is used to contr
Page 113 and 114:
ASSIGNMENT 3 Textbook Assignment: T
Page 115 and 116:
The signs 3-16. of ∆Χ and ∆Υ
Page 117 and 118:
3-34. Which functional area compile
Page 119 and 120:
3-53. 3-54. 3-55. 3-56. 3-57. Which
Page 121:
3-71. 3-72. What equipment provides
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nonresident training course - Historic Naval Ships Association

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