Specifications

Local and Central Device Library
The AOI software allows users to select either local or central Device library.
There are advantages and disadvantages of both types of library settings.
When using a local library, changes from one board setup will not affect the
other board setups. This prevents a mistake from one board setup
contaminating other good board setups. However, with local library a
desirable change from one board setup will also not cause other board setups
to update accordingly. The user must make the same change to each of the
board setups. This can be time consuming. Another disadvantage of using the
local library is that each board setup can be large and can occupy more than
10 Megabytes of disk space.
The user must have a consistent Device numbering system to benefit from
using the central library. Contract manufacturers using the Device numbers of
customers must pay special attention. Each customer’s boards use a different
Device numbering system. As a result, the benefit of using a central library
would be marginal. Also, by using central library the user needs to have a
consistent protocol for dealing with Device rotation. For example, for Device
number 101 on board NoA rotation 90 mean pointing to the left, then Device
101 on all boards’ rotation 90 must point to the left.
Our recommendation is to use the local library initially while the user is
learning to operate the machine. The user may switch to central library when
he/she believes they can benefit from using the central library and when they
think the machine is ready for production use. Backup the central library every
time significant changes are made.
To change the library setting, select Library Setup from the library pop up
menu. The following dialog will display: