Fluke 5790B, Руководство по обслуживанию

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5790B
Service Manual
A-10
UUT (Unit Under Test)
An abbreviated name for an instrument that is being tested or calibrated.
Volt
The unit of emf (electromotive force) or electrical potential in the SI system of
units. One volt is the difference of electrical potential between two points on a
conductor carrying one ampere of current, when the power being dissipated
between these two points is equal to one watt.
The unit of power in the SI system of units. One watt is the power required to do
work at the rate of one joule/second. In terms of volts and ohms, one watt is the
power dissipated by one ampere flowing through a one-ohm load.
In instrumentation, wideband refers to the ability to measure or generate signals
in the radio frequency spectrum.
Verification
The comparison of a measurement or source device (UUT) with a measurement
or source device of known and lesser uncertainty, to report variation from
required performance. Verification does not include adjustment or reassignment
of values to UUT, and is often done to determine whether the adjustment is
necessary. Also see “calibration”.
Working Standard
A standard that is used in routine calibration and comparison procedures in the
laboratory, and is maintained by comparison to reference standards.
Zero Error
Same as offset error. The reading shown on a meter when an input value of zero
is applied is its zero or offset error.