4-66. 4-67. 4-68. 4-69. 4-70. Using TADIL A specifications, what is the maximum allowable variation of power in the Link-11 data tones? 1. 1.0 dB 2. 1.5 dB 3. 3.0 dB 4. 4.0 dB The PU display of the LMS-11 presents a graphic representation of the relative power and phase error of the Link-11 signal received from a specified  unit. 1. True 2. False What information is displayed on the relative power bar graph of the PU display? 1. The power of the 605-Hz tone only 2. The relative power of the data tones with respect to the 605-Hz tone 3. The relative power of each data tone with respect to the average power of all the data tones 4. The relative power of each data tone with respect to an internal standard When the relative power bar graph is read, a data tone that is +2 dB greater than the average will be displayed in which of the following colors? 1. Cyan 2. Green 3. Yellow 4. Red The phase error bar graph of the LMS-11 display what information about the Link-11 signal? 1. 2. 3. 4. Relative power Mean deviation of the phase error only Standard deviation of the phase error only Both the mean and standard deviations of the phase error 26 4-71. A standard phase deviation of 15 degrees for a data tone will be represented on the bar graph in which of the following colors? 1. Cyan 2. Green 3.    Yellow 4. Red 4-72. The LMS-11 will indicate that the data received is bad if the standard deviation falls in which of the following ranges? 1.    A positive value less than 45 degrees 2.    A positive value greater than  45  degrees 3.    A negative value less than 45 degrees 4.    Both 2 and 3 above 4-73. The incidence of bit errors will increase as the signal-to- noise  ratio  increases. 1.    True 2. False 4-74. Which of the following tones are graphically displayed by the LMS-11 Spectrum Display? 1. 30 tones that are the odd harmonics of 55 Hz 2. 30 tones that are the even harmonics of 55 Hz 3. The 605 Hz tone and the noise tone only 4.   The 15 data tones only 4-75. Under ideal conditions, at what level should the data tones be displayed on the bar graph of the  spectrum  display? 1. 0 dB 2. +6 dB 3. -6 dB 4. +4 dB