414 the equipment shall continue to provide valid

Info icon This preview shows pages 40–42. Sign up to view the full content.

View Full Document Right Arrow Icon
the voltage spike conducted tests, (2.4.14), the equipment shall continue to provide valid navigation information throughout the test. (8) Radio Frequency Susceptibility Test (Radiated and Conducted) . In lieu of paragraph 2.4.17 of RTCA/DO-208, substitute the following requirements: (i) The equipment shall be subjected to the test conditions as specified in RTCA/DO-160C, Paragraph 20.0. In addition to the requirements specified therein, the equipment shall meet the following requirements of this standard: 1. Subparagraph 2.2.1.1 - Cross-Track Deviation. 2. Subparagraph 2.2.1.2 - Waypoint Distance Display 3. Subparagraph 2.2.1.12 - Equipment Computational Response Time. 4. Paragraph 2.2.2 - 2D Accuracy Requirements 5. Subparagraph 2.2.3.3 - Acquisition Time 6. Subparagraph 2.3.1.2 - Vertical Path Deviation 7. Subparagraph 2.3.1.3 - Vertical Profile 8. Paragraph 2.3.2 - VNAV Accuracy Requirements NOTE: Some of the above references are modified by this TSO. The TSO requirements shall be used instead of the RTCA/DO-208 requirements. (ii) The GPS equipment shall be shown to meet the requirements of paragraph 2.2.2 of RTCA/DO-208 when subjected to a radiated field strength with continuous wave (cw) interference at a frequency of 1.57542 GHz and an electric field strength of 20 mv/meter measured at the exterior case of the GPS receiver. The radiated Page 40    (a)(3)(vii)  
Image of page 40

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
TSO-C129a susceptibility test procedures of RTCA/DO-160C, Section 20, shall be followed when conducting this test. This test should be conducted with simulated satellite inputs and should not result in the loss of track of any satellite used for navigation. The duration of the test must be sufficient to determine if tracking has been lost (20 seconds should be long enough, depending on the coasting features used by the GPS equipment). (9) Emission of Radio Frequency Energy Test . Delete the words "(When Required)" from paragraph 2.4.18 of RTCA/DO-208. This test is required. (10) Antenna Requirements . Add the following requirements to RTCA/DO-208: (i) The manufacturer shall demonstrate that the antenna (and electronic components included as part of the antenna) meets specified antenna performance requirements when subjected to the environmental test conditions specified in RTCA/DO-160C. The specified antenna performance requirements should include at least minimum and maximum antenna gain, frequency stability, power requirements, noise figure, mask angle, coupling and ground plane requirements, mounting provisions, etc. (ii) The manufacturer shall provide data to substantiate the maximum airspeed for which the antenna is suitable. (iii) The manufacturer shall specify in the installation instructions the equipment with which the GPS equipment manufacturer has found the antenna to be compatible. Additionally, the installation instructions shall include the antenna performance specifications (i.e., gain, frequency stability, power requirements, noise figure, mask angle, coupling and ground plane requirements, mounting provisions, etc.).
Image of page 41
Image of page 42
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern