HP 54520 Series - Page 280

Text verbose An ASCII text file
format that uses alphanumeric char-
acters to represent a waveform.
This format includes header informa-
tion about the waveform and when it
was acquired. The text file formats
are a convenient method for transfer-
ring waveforms to desktop
publishing programs.
Text Y values Similar to the text
verbose file format, except that the
header information is deleted from
the beginning of the file.
Throughput Throughput is the
rate at which the oscilloscope can ac-
quire, display, and make
measurements on a waveform. The
faster the throughput of an oscillo-
scope, the more waveforms per
second that it can process.
Time base reference A reference
point along the time axis (X axis) of
the waveform. This point can be
either the left side of the display, the
center, or the right side. The time of
this point, relative to the trigger
event, is set using the time base posi-
tion control. When the time base
scale is changed, the time location at
the time base reference remains
fixed and the waveform display
either expands or contracts about
the reference point.
Glossary
Time bucket A storage location
within a waveform record which is
used to hold a waveform data sam-
ple. A waveform record is made up
of a series of waveform data samples
stored in ascending time order.
Each waveform sample is stored ina
specific time bucket within the wave-
form record based upon its time
relationship to the other samples.
The waveform record length (num-
ber of points) determines the
number of time buckets in a record.
A time bucket is considered "full" if it
contains a waveform data sample.
Time tag Time tag is used in the
sequential mode. The time tag num-
ber associated with the th trigger
or acquisition is the time from the
first trigger to the mth trigger.
Trigger event A change of some
type in the trigger source waveform
which causes the acquisition system
to begin storing waveform samples
into the waveform records. The time
at which the trigger event occurs is
the time reference for the waveform
and is, by definition, 0 seconds.
Glossary -5