HP 1660CS, User Manual

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Glossary
benchtop logic analyzer A small,
standalone HP logic analyzer that is
not part of the HP 16500 logic analy-
sis system.
bit The information the logic ana-
lyzer stores for one sample of one
physical line. Bits are either "low" or
"high." See also channel.
bucket In the SPA State Overview
mode, an individual subrange of
states displayed on the histogram’s X
axis.
channel The analyzer’s mapping of
a single physical line. Channel is
often used interchangeably with bit.
Channels are grouped into labels in
the Analyzer Format menu.
don’t care Signifies that the signal
state should be ignored. "Don’t
cares" are represented by "X" in as-
signment fields.
glitch A pulse of very short dura-
tion, usually less than the setup or
hold time. To the logic analyzer, a
glitch is two or more transitions
across the logic threshold between
consecutive samples.
label A name for a group of func-
tionally-related channels. Three
common labels, which are required
by HP preprocessor interface inverse
assemblers, are ADDR, DATA , and
STAT. If a label is on, it appears in
all display menus and the Trigger
menu, enabling you to quickly dis-
play, store, or trigger on information
of interest. See also symbol and
term.
listing An alphanumeric display of
state information. See also trace and
waveform.
menu field The field to the right
of the mode field. The menu field al-
lows you to set up the instrument
selected in the mode field.
mode field Also known as module
field. The field in the upper-left cor-
ner of the logic analyzer. This field
selects the mode, such as "Analyzer"
or "System."
module field See mode field.
OMF Symbol Table OMF stands
for Object Module File. The
HP E2450A Symbol Utility uses the
OMF to produce a table of symbols
in the executeable.
Glossary–1