Agilent 5991-1732EN Specifications Guidelines - White Paper c20140718 [9] free download

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Keysight Technologies Specifications Guidelines White Paper Introduction Keysight Technologies, Inc. has definitions for its Test & Measurement product specifications and how they are presented. The following material is extracted from these manufacturing recommendations. Some of the practices may not apply to (Keysight) products introduced before 1996, nor relate directly to those used in Keysight's worldwide service operations. Product Specification Terminology We begin by providing a basis for a common understanding of the language used at Keysight Technologies when discussing product specifications. Figure 1 depicts the hierarchy of terms. Product information Features Specifications Characteristics Figure 1. Hierarchy of terms Product Specification Terminology (continued) Product information is an overall term for any attribute used to describe a product and its capabilities. It is the most general term used for discussing the property of a product. A feature is an attribute of product offered as a special attraction. Features describe, or enhance, the usefulness of the product to the customer. A feature is not necessarily measurable; however, it may have an associated measur- able parameter. If a feature with a measurable parameter is of interest to the customer, a product specification describes its performance. For example, HP-IB I/O interface is a feature and it is not measurable but Narrow Resolution Bandwidth Filter is a feature with the measurable parameter bandwidth. Specifications formally describe product performance. A specification is a numerical value, or range of values, that bounds the performance of a product parameter. The product warranty covers the performance of parameters described by specifications. Products meet all specifications when shipped from the factory, or from an Keysight Customer Service Center following calibration. Environmental specifications bound the external conditions applied to a product for which the specifications are valid. Some specifications are only valid over a limited, or restricted, set of external conditions but in such cases the specifica- tion includes a description of these limited conditions. The environmental speci- fications also define the conditions that a product may be subjected to without permanen