User Guide

Glossary May 16, 2000
332
bounding box
A rectangular dotted line containing the graphics for a symbol and all
visible pin connection points. In terms of the schematic editor, the
position of the bounding box determines whether a point falls on a part
when selecting parts, or whether it falls on the pin of a part when
checking for electrical connections. Box defines the selection area of the
symbol when placed on a schematic.
bundle
A collection of named wires or buses of the same type or purpose.
bus
A collection of homogeneously named signals.
circuit
A configuration of electrically connected components or devices.
connector
A physical device that is used for external connections to a circuit
board. A connector has no electrical significance until it is connected on
a PCB.
current sensor
Displays the bias point current flow in a given direction.
design
A schematic drawing or set of drawings representing a circuit or PCB.
display map
A portion of the initialization file that specifies which schematic items
are turned on and off for display and printing.
ECO
Engineering change order. A design change usually requiring back
annotation of the schematic.
ERC
Electrical rules check, a process performed before generating a netlist
or running the simulator. The ERC performs a preliminary
connectivity check on the schematic. If the schematic is part of a
hierarchical design, the check is performed only for the current
hierarchical level.
fileset
The set of files required to perform a certain function.
flat schematic
A flat, single-level schematic containing only primitive symbols from
the component libraries. A flat schematic can be either single or
multiple page.
gate
A subset of a package, and corresponds to a part instance.
global editing
Editing of a symbol, attribute or attribute value, saved in a library, and
applied to all designs using that particular symbol.