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Glossary
Glossary–12
DAS System User Manual
Post-fill
A requirement that a logic analyzer continue to acquire data after the trigger
until a predetermined number of samples has been taken. When the trigger
position is programmed to occur in the center of memory, a logic analyzer
will take enough data samples after the trigger to fill one half of the
acquisition memory. (See also Trigger Position.)
Post-processing
Any type of acquisition (or reference) memory analysis that occurs after —
rather than during — the acquisition.
Pre-fill
A requirement that a logic analyzer fill a predetermined number of acquisi-
tion memory sequences with new data before accepting a trigger. With the
trigger programmed to occur in the center of memory, one-half of the
memory must be filled before the trigger. (See also Trigger Position.)
Probe
An input (acquisition) or output (pattern generation) device constructed as a
separate unit. As an input device it transmits the input signal from the circuit
under test to the logic analyzer. As an output device it transmits the output
signal from the logic analyzer to the circuit under test.
Probe Adapter
A microprocessor-specific lead set that connects the acquisition module’s
probe to a system under test. For example, the 80286 Probe Adapter.
Program-controlled Function Key
Each program-controlled function key (there are eight, F1-F8) accesses a
series of specially-assigned functions. These functions are display-depen-
dent; in other words, they vary from menu to menu.
Program Flow Control
The process of branching or jumping to/from subroutines or other sections of
code.
Programmatic Command Language
The entire set of DAS programmatic commands is called the Programmatic
Command Language, or PCL.
R1
Return to One data format. A channel selected to be an R1 channel always
returns a logic 1 after a specified delay and pulse width. R1 and RZ data
formats are complements. (See also RZ and DNRZ.)
Refmem
An abbreviation for Reference Memory.
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