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This article explains how to verify gerber files once a layout has been
The first step in verifying gerber files is to obtain a
gerber viewer. There are many free gerber viewers available on the
web. We recommend using Camtastic from Altium. This can be
downloaded from the following link -
Viewer - Gerber Viewer From Altium, (20MB - Password:
load in a file:
- Open Altium Viewer
- File/New/Cam Document
- File/Import/Gerber Quickload.
Once you have a gerber file
viewer there are a few tricks that you can do to verify the correctness of
- Print a scaled version of the PCB, and place any parts you have
directly onto the printout to verify that all of the foot prints were
created correctly. Be espically careful to check quad flat packs (QFPs)
because if there is a problem, it will be catastrophic and most likely
the board will have to be thrown out, if there is an error.
- Cut out the printout around the board outlines with scissors, so
that you have. Then insert this cut- out into the
enclosure to make sure that it fits, and that any mounting holes are
- Pay attention to the height of taller components which may obstruct
- Then double check any incorrect pin orderings. Three terminal
devices such as voltage regulators are notorious for having incorrect
pin outs, so double check these parts. Also check the pin 1
location on QFPs. QFPs can have pin 1 located on a corner or in
the center of a row.
- Potentiometers (variable resistors) can present a
challenge since they are rotationally directional. Volume
increase is usually associated with the clock wise direction. As
a result, if rotational direction matters to you, it's important that
this is verified on the PCB.
Daycounter provides contract engineering
services. Please contact
us if you would like to out-source your next engineering project.