Technical data

Specifications 1
N1911A/1912A P-Series Power Meters Service Guide 3
Specification Definitions
There are two types of product specifications:
Warranted specifications are specifications which are covered by the
product warranty and apply over 0 to 55½
o
C unless otherwise noted.
Warranted specifications include measurement uncertainty calculated with
a 95 % confidence.
Characteristic specifications are specifications that are not warranted. They
describe product performance that is useful in the application of the
product. These characteristic specifications are shown in italics.
Characteristic information is representative of the product. In many cases,
it may also be supplemental to a warranted specification. Characteristic
specifications are not verified on all units. There are several types of
characteristic specifications. These types can be placed in two groups:
One group of characteristic types describes ‘attributes’ common to all prod-
ucts of a given model or option. Examples of characteristics that describe
‘attributes’ are product weight, and 50 W input Type- N connector. In these
examples product weight is an ‘approxi- mate’ value and a 50 W input is
‘nominal’. These two terms are most widely used when describing a prod-
uct’s ‘attributes’.
The second group describes ‘statistically’ the aggregate performance of the
population of products.
These characteristics describe the expected behavior of the population of
products. They do not guarantee the performance of any individual product.
No measurement uncertainty value is accounted for in the specifiction.
These specifications are referred to as ‘typical’.