Tektronix DAS 9221 Option 04, Руководство пользователя

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Glossary
DAS System User Manual
Glossary–13
Reference Memory
Acquired data that has been stored in a file for use as a reference base (for
instance, to compare with future acquisitions).
Resolution
The minimum detectable interval between data transitions on a single acquisi-
tion channel or between data transitions on any two acquisition channels.
RZ
Return to Zero data format. A channel selected to be an RZ channel always
returns a logic 0 after a specified delay and pulse width. RZ and R1 data
formats are complements. (See also R1 and DNRZ.)
Sample Clock
A timing signal that establishes the rate of data sampling.
Sampling Rate
The frequency at which data is logged into the logic analyzer.
Scrolling
A method of positioning a portion of a data display too lengthy to be
contained on the screen in its entirety.
Select Field
A screen field that allows you to make a selection from a predefined set of
choices.
Self-Contained Network
An Ethernet network consisting of a logic analyzer, X terminal, and printer.
This network does not include a host computer.
Sequential Pattern Generator
A programmable pattern generator (such as the 92S32) that features a very
deep vector memory and sequential operation. Data vectors entered into the
top of memory will be output first, followed sequentially by each successive
vector to the end of memory. (See also 92S32.)
Setup File
A file stored on the logic analyzer’s hard disk containing setups for
acquisition or pattern generation modules. These setup files can be used to
restore setups from the hard disk drive.
Setup Menu
A general class of menus concerned with pre-acquisition details. Available
setup menus depend on the modules in your logic analyzer.
Setup Time
Length of time an input signal must be present (before being clocked) to be
considered stable and valid.