User Manual

Appendix 3 Terminology
A48
Memory
Storage component. The place
where digital data is stored.
Mode
A particular kind of operation, or for-
mat
Module (Unit)
A device that provides additional
functionality when installed in the in-
strument
MS-DOS
A DOS (disk operating system) de-
veloped by Microsoft Corporation
(USA), and a registered trademark
of that company
Offset
The amount that a waveform is shift-
ed on the voltage axis by waveform
calculation. An additional value
when scaling
Parameter
A numerical value representing a
feature of a signal waveform, such
as its maximum or RMS value
Peak Hold
Retaining the maximum amplitude
at each frequency point
Position
The location of the zero-volt level.
Pre-Trigger
Time prior to triggering. That is, time
that passes before a trigger event
occurs
Probe
A signal line carrying input signals to
the input circuitry.
PT
Abbreviation of potential transform-
er, a voltage transformer.
Recording Length
An amount signifying the total num-
ber of samples as a number of (dis-
play) divisions
RH
Abbreviation for relative humidity
The amount of vapor contain in one
cubic meter relative to the amount of
saturated vapor at the same temper-
ature, expressed as a percentage
Ripple Component
An AC noise component
RMS
Abbreviation of root-mean-square,
which is the value of AC that per-
forms the equivalent work as the
same value of DC
Sampling
Conversion of an analog waveform
to a digital numeric progression
Sampling Rate
The rate at which the sampling pro-
cess repeats
Scaling
Conversion of measurement values
acquired as voltage into another
physical quantity
Slope
The condition of rising or falling volt-
age
Storage
Writing a waveform (A/D signal) to
memory
TFT
Abbreviation for thin-film transistor
Thermal Head
Provides thermosensitive printing
Threshold
The values of separate High and
Low boundary levels at which an an
-
alog signal is converted to a logi
c
signal
Trigger
An event that initiates an operation
.
It signals measurement to begin.
Trigger Source
A signal that serves as the source
required to apply a trigger.
Unbalanced Input
When one of two input terminal
s
serves as a reference for the other
,
as a method for signal input
Word
A unit of data for digital display
.
Each sample of an input signal i
s
converted into one word of digita
l
data.
Zero Adjust
Making the zero position match the
actual ground level