User`s guide

Editin
g
Symbol Graphics 5
-17
Grid spacin
g
for
g
raphics
The grid, denoted by evenly spaced grid points, regulates the
sizing and positioning of graphic objects and the positioning of
pins. The default grid spacing is set at 0.1", and the minimum
grid spacing is 0.01".
You can change the grid spacing when you need to draw
graphics in a tighter space.
To chan
g
e the
g
rid spacin
g
1
From the Options menu in the symbol editor, select Display
Options.
2
In the Grid Spacing text box, type in a new value in inches.
3
Click OK.
Note
Before placin
g
pins, be sure to set the
g
rid spacin
g
back to the default.
Grid spacin
g
for pins
Pins must be placed on the grid at integer multiples of the grid
spacing. Because the default grid spacing in the schematic editor
is set at 0.1", MicroSim recommends setting pin spacing in the
symbol editor at 0.1" intervals from the origin of the symbol and
at least 0.1" from any adjacent pins.
The symbol editor considers pins that are not placed at integer
multiples of the grid spacing from the origin as off-grid, and
displays a warning when you try to save the symbol.
Here are two rules of thumb:
• Make sure Stay on Grid is enabled when editing symbol
pins and editing schematics so you can easily make
connections.
• Make sure the grid spacing used to edit the symbol pins
matches the grid spacing in the schematic editor.
Pin chan
g
es that alter
the s
y
mbol template
If you either:
• chan
g
e pin names, or
• delete pins
then you must adjust the value of the
symbol’s TEMPLATE attribute to reflect
these chan
g
es. To find out how, see Pin
callout in subcircuit templates on
page 5-25.