Automatically load gerbers/drills and run DFM Checker with Import Matrix: DFMCHECKER : Numerical Innovations

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Automatically load gerbers/drills and run DFM Checker with Import Matrix: DFMCHECKER

Numerical Support Team

started a topic almost 15 years ago

Introducing a new feature to the FAB 3000 import matrix called DFMCHECKER which will let you automatically load gerbers/drills and then run DFM Checker. Without even clicking a button you can verify if your gerbers are ready for manufacturing.

DFMCHECKER array is optional. It is used to run the DFM Checker on an imported job. Must be called after Job and will only run on the previous job loaded.

Fields in the DFMCHECKER array

UNITS	MIL or MM	Units to use for this dfmchecker array.
minimum_padsize	positive number	Minimum Pad size allowed.
minimum_smtpadwidth	positive number	Minimum SMT pad width allowed.
minimum_tracewidth	positive number	Minimum trace width allowed.
minimum_outer_tracespacing	positive number	Minimum spacing on top or bottom layers
minimum_inner_tracespacing	positive number	Minimum spacing for innerlayers
minimum_drill_pad_annularring	positive number	Minimum drill to pad annular ring
minimum_border_clearance	positive number	Minimum clearance from board edge.
find_acidtraps	positive number	Locate Acid Traps
find_nonfunctional_internalpads		Find non functional pads on internal layers
minimum_drillsize	positive number	Minimum drill hole diameter
find_drill_doublehits		Find drill double hits.
find_drill_missinghits		Find missing drill hits
find_missingpads		Find missing pads
find_touchingholes		Find drill holes that touch
minimum_silkscreen_linewidth	positive number	Find minimum silkscreen line width
find_silkscreen_overmask	positive number	Locate silkscreen over soldermask
silkscreen_border_clearance	positive number	Minimum clearance allowed from Silkscreen to board edge
undersize_mask_clearance	positive number	Locate small mask openings
missing_mask_clearances		Find missing mask clearances
find_mask_slivers		Find mask slivers
find_solder_bridges	positive number	Find solder bridges
inner_clearance	positive number	Inner clearance on plane layers
power_ground_minimum_annularring	positive number	Minimum annular ring on plane layers
find_starved_thermals	positive number	Locate starved thermals
find_power_ground_shorts		Find power/ground shorts
check_negplane_thermal_conflicts		Find thermal conflicts on neg. planes
find_isolated_connections		Find isolated connections

Note: If you do not wish to check for all of the above violations, simply omit them in the import matrix file.

See below for sample usage of the DFMCHECKER

JOB {
    NAME=test-odb++-gerber
    LAYER=layer_1,274X\Art0121.pho
    LAYER=layer_4,274X\Art02.pho
    LAYER=layer_2,274X\Pgp2529.pho
    LAYER=layer_3,274X\gnd2530.pho
    LAYER=sst,274X\Sst0126.pho
    LAYER=spt,274X\Sp0128.pho
    LAYER=smb,274X\Sm0227.pho
    LAYER=smt,274X\Sm0128.pho
    LAYER=d_1_2,274X\Drill.drl
}

#Lets run DFM Checker (choose units or mil or mm)
DFMCHECKER {
    units=mil
    minimum_padsize=15.0
    minimum_smtpadwidth=5.0
    minimum_tracewidth=4.0
    minimum_outer_tracespacing=4.0
    minimum_inner_tracespacing=6.0
    minimum_drill_pad_annularring=4.0
    minimum_border_clearance=10.0
    find_acidtraps=7.0
    find_nonfunctional_internalpads
    minimum_drillsize=7.0
    find_drill_doublehits
    find_drill_missinghits
    find_missingpads
    find_touchingholes
    minimum_silkscreen_linewidth=4.0
    find_silkscreen_overmask=1.0
    silkscreen_border_clearance=10.0
    undersize_mask_clearance=4.0
    missing_mask_clearances
    find_mask_slivers
    find_solder_bridges=8.0
    inner_clearance=7.0
    power_ground_minimum_annularring=4.0
    find_starved_thermals=8.0
    find_power_ground_shorts
    check_negplane_thermal_conflicts
    find_isolated_connections
}

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Automatically load gerbers/drills and run DFM Checker with Import Matrix: DFMCHECKER

Numerical Support Team