Assignment 2-Cont.

Fire Controlman Volume 04-Fire Control Maintenance Concepts
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2-58. A total of how many test antennas are used in a tower array? 1. One 2. Two 3. Three 4. Four 2-59. Which of the following test equipment is NOT nor- mally used in collimation? 1. AN/SPM-9 2. AN/SPM-6 3. AN/SPG-51 4. AN/UPN-32 2-60. Shore-tower checks between overhauls may be required by which of the following authorities? 1. PWO 2. CWAT 3. NAVSEA 4 . C E O 2-61. In track-receive axis collimation, what method is used to determine the error between the track-receive axis and the borescope axis of the AN/SPG-51C/D radar? 1. Angle-error null 2. Electronic null 3. Mechanical null 4. Tracking angle null 12 2-62. What minimum number of nulls and the borescope readings should be taken to determine the collimation error between the TR axis and the borescope axis? 1. 10 2. 20 3. 30 4. 35 2-63. What test equipment, if any, is required aboard ship during track-transmit axis collimation? 1. AN/SPM-9 2. AN/SPM-6 3. AN/UPN-32 4. None 2-64. What method of measurement is used to detemine the error between the CWI axis and the borescope axis of the AN/SPG-51C/D radar? 1. Angle 2. Circle 3. Borescope plot 4. Beam-pattern plot

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