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80E00 Electrical Sampling Modules User Manual
53
Glossary
Accuracy
The closeness of the indicated value to the true value.
Analog-to-Digital Converter
A device that converts an analog signal to a digital signal.
Attenuation
A decrease in magnitude of current, voltage or power of a signal.
Attenuator
An electronic transducer that reduces the amplitude of a signal.
Autoset
A means of letting the instrument set itself to provide a stable and meaning-
ful display of a given trace.
Bandwidth
The range of frequencies handled by a device or system. Bandwidth is a
measure of network capacity. Analog bandwidth is measured in cycles per
second. Digital bandwidth is measured in bits of information per second.
Channel
A place to connect a signal or attach a network or transmission line to
sampling modules.
Common Mode
A circumstance where a signal is induced in phase on both sides of a
differential network.
dB
Decibel: a method of expressing power or voltage ratios. The decibel scale is
logarithmic. The formula for decibels is:
dB = 20 log (V
i
/V
ref
)
where Vi is the voltage of the incident pulse, V
ref
is the voltage reference,
and log is the decimal-based logarithmic function.
Dialog Box
A displayed box in which you enter instrument commands.
Differential Mode
A circumstance where the true signal and its logical compliment are
transmitted over a pair of conductors.
Digital Signal
A signal made up of a series of on and off pulses.