Definitions And Conditions - NARDA NRA-3000 RX Bedienungsanleitung

8 Specifications
8.1

Definitions and Conditions

32
Conditions
Unless otherwise noted, specifications apply after 30 minutes warm-up time within the
specified environmental conditions. The product is within the recommended calibration
cycle.
Specifications with limits
These describe product performance for the given parameter covered by warranty.
Specifications with limits (marked as <, ≤, >, ≥, ±, max., min.) apply under the given
conditions for the product and are tested during production taking measurement uncertainty
into account.
Specifications without limits
These describe product performance for the given parameter covered by warranty.
Specifications without limits represent values with negligible deviations which are ensured
by design (e.g. dimensions or resolution of a setting parameter).
Typical values (typ.)
These characterize product performance for the given parameter that is not covered by
warranty. When stated as a range or as a limit (marked as <, ≤, >, ≥, ±, max., min.), they
represent the performance met by approximately 80 % of the instruments. Otherwise, they
represent the mean value. The measurement uncertainty is not taken into account.
Nominal values (nom.)
These characterize expected product performance for the given parameter that is not
covered by warranty. Nominal values are verified during product development but are not
tested during production.
Uncertainties
These characterize an interval for a given measurand estimated to have a level of
confidence of approximately 95 percent. Uncertainty is stated as the standard uncertainty
multiplied by the coverage factor k=2 based on the normal distribution. The evaluation has
been carried out in accordance with the rules of the "Guide of the Expression of Uncertainty
in Measurement" (GUM).
NRA Series Narda