| Near-real time |
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The designation applied to the propagation of data through a system with time delays that do not adversely impact the system and are compatible with operational requirements. |
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| Negligible |
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Injury requiring minor first aid and/or minor system damage. |
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| Nesting (commands) |
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A method of command sequence or procedure (PROC) organization by which a set of commands is established as subordinate to a “parent” command, and all subordinate commands execute prior to the next “parent” command in the sequence or PROC. Subordinate commands can, themselves, be “parents” to other groupings of subordinate commands, which is referred to as “nesting.” |
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| Network Common Data Form (NetCDF) |
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Network Common Data Form - A machine-independent self-describing file format for scientific data. |
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| Nonconformance |
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A condition of any hardware, software, material, or service in which one or more characteristics do not meet requirements. |
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| Nonconformance, minor |
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A nonconformance that is not likely to materially reduce the usability of the supplies or services for their intended purpose, or is a departure from established standards having little bearing on the effective use or operation of the supplies or services. |
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| Non-critical telemetry |
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Telemetry points that are required to monitor the instrument in powered on state. |
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| Non-Essential Loads |
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Power loads that can be powered off without adversely affecting the minimum controllability and commandability of the spacecraft. |
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| Non-interference basis |
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No interference causing loss of data or reduction in data quality occurs between affected systems. |
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| Non-operational Temperatures (NOT) |
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The established range of temperatures that components are permitted to experience while dormant, not operating and not powered. NOT temperatures represent the permissible range while the hardware is off. During flight, survival heaters maintain hardware at or above the cold NOT limit and passive design maintains hardware below the upper NOT limit. It is also known as non-operating MAT. |
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| Normal Operation |
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Operational states of the spacecraft that exist or occur by design, according to the expectation of the mission designers and planners. |
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| Notifications |
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Unsolicited communications from the Ground Segment to Users. These messages may be communicated using a variety of communication methods. |
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