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Glossary
50Ω Input Protection
functions when the scope is powered
on. The 50Ω load will typically dis-
connect if greater than 5 Vrms is
detected. However, the inputs could
still be damaged, depending on the
time constant of the signal.
Auto A trigger mode that pro-
duces a baseline display if the trigger
conditions are not met. If the trigger
frequency is less than 25 Hz, a free
running display will result even if the
level and slope conditions are met.
Auto Level The oscilloscope sets
the trigger point to the 50% ampli-
tude point on the displayed
waveform. If there is no signal pre-
sent, a baseline is displayed.
Autoscale Front-panel key that
automatically sets up the oscillo-
scope to display a signal.
Autostore displays the stored
waveforms in half bright, and the
most recent trace is displayed in full
bright.
Baseline Free running trace on
the display when no signal is applied
and the trigger mode is set to auto or
auto level.
BW Lim (Bandwidth Limit) Limits
the displayed bandwidth of the se-
lected channel to 30 MHz, and is
This only
available for channels 1 and 2 only.
This feature is useful for viewing
noisy signals
Couplng (Coupling) This changes
the input coupling. Channels 1 and
2, and the External Trigger allow dc,
ac, or ground.
Cursors Horizontal and vertical
markers used for making custom volt-
age and time measurements.
Delay In main sweep, the delay
knob moves the sweep horizontally,
and indicates how far the time refer-
ence is from the trigger point. In
delayed sweep the delay knob moves
the starting point of the portion of
the main sweep to be expanded by
the delayed sweep.
Delayed Gives an expanded view
of the main sweep.
Deskewing The removal of time
offset errors between two signals.
The error is typically due to differ-
ences in either cable lengths or
characteristics. Also called Time
Null.
Display Allows selection of either
normal, peak detect, or averaged dis-
play modes.
Erase Clears the display.
Glossary–1
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