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in the Delay field, and is set by using
the knob or the keypad.
deskewing To cancel or nullify the
effects of differences between two
different internal delay paths for a
signal. Deskewing is normally done
by routing a single test signal to the
inputs of two different modules, then
adjusting the delay path to one of
the modules so that both modules
recognize the signal at the same
state at the same time.
don’t care Signifies that the state
of the signal, high or low, is not rele-
vant to the measurement. That is,
the analyzer will ignore the state of
this signal when determining
whether a match occurs on an input
label. Don’t cares are represented by
the X character in analyzer resource
terms.
edge mode In the oscilloscope,
this is the trigger mode that causes a
trigger based on a single channel
edge (either rising or falling).
glitch/edge terms Timing ana-
lyzer resources that allow detection
of transitions on a signal. A
glitch/edge term can be set to detect
a rising edge, falling edge, either
edge, no edge, or glitch (very short
duration pulse) on an input signal.
See also glitch.
glitch A glitch is defined as two or
more transitions crossing the logic
threshold between consecutive tim-
ing analyzer samples.
high The most-positive portion of a
logic signal. In pattern trigger meas-
urements for the oscilloscope, it is
represented by an H in the pattern
selector.
horizontal position See delay
field.
horizontal sweep speed In the
oscilloscope, the time value that de-
termines horizontal scaling of the
waveform to be displayed on the
screen. It is measured in seconds per
division and is viewed in the s/Div
field. It is set by using the knob or
the keypad.
immediate mode In the oscillo-
scope, the trigger mode that does
not require a specific trigger condi-
tion (that is, an edge or a pattern).
input field In the oscilloscope, the
field that allows you to select a chan-
nel for vertical scaling.
input impedance See coupling
field.
intermodule menu The menu
that allows you to set up the instru-
Glossary
Glossary–2