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5790A
Service Manual
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.
A-10
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