HP 8591C User Manual page 339

information immediately and do not store, then recall the data to the
screen), these differences are displayed on the screen and the graticule is
used to evaluate the measurement. Many analyzers with digital displays
(refer to digital display) have markers that can be used to measure the
signal. As a result, measurement differences are stored in memory, and
the ambiguity of the display is eliminated from the measurement.
The abbreviation for downloadable program. A single programming
command or a sequence of programming commands used to perform
and traces deEned by the program creator. The DLP can be downloaded
from one electronic storage medium into another and executed without a
controller.
dynamic range
The power ratio (dB) between the smallest and largest signals
simultaneously present at the input of an analyzer that can be measured
with some degree of accuracy. Dynamic range generally refers to
measurement of distortion or inter-modulation products.
end-of-line (EOL) readings
Measurements taken at the last tap on the distribution cable.
error message
A message displayed on the screen indicating missing or failed hardware,
improper user operation, or other conditions that require additional
attention. Generally, the requested action or operation cannot be
completed until the condition is resolved.
FFT
The abbreviation for Fast Fourier transform. It is a mathematical
operation performed on a time-domain signal to yield the individual
spectral components that constitute the signal.
file
An electronic means of storing data. The data is stored as a collection of
related records. The records are organized in a Ele.
firmware
An assembly made up of hardware and instruction code that are
integrated to form a functional set that cannot be altered during normal
operation. The instruction code, permanently installed in the circuitry of
Glossary-6