1-12 Introduction and Overview
5DX Overview 5DX Series 3
Panel Handling Subsystem
The Panel Handling Subsystem provides loading and unloading of printed circuit
assemblies (panels) for testing. The Panel Handling subsystem supports Surface
Mount Equipment Manufacturers Association (SMEMA) interface standards.
The Panel Handling Subsystem also positions the panel under test. This is done by
controlling the three mechanical motion axes (X, Y and Z) and the Autowidth
Adjust Motors. The X-Axis and Y-Axis are driven by servomotors, while the Z-
Axis is driven by four vertically positioned stepper motors. The rails in the XYZ
Stage Assembly are adjusted to the size of the panel by the autowidth adjust
motors.
Surface Map Subsystem
The Surface Map Subsystem maps the surface characteristics of each panel.
Components of the Surface Map Subsystem include the laser, the laser camera and
the surface mapping software. Surface measurement is required to facilitate the
accurate positioning of the Z-Axis in relationship to the Plane of Focus.
Imaging Subsystem
The Imaging Subsystem contains image acquisition hardware and software
necessary to generate slice image data. The process begins with the Electron Beam
and resultant Video images are digitized into 256 gray levels and analyzed.
Pneumatics Subsystem
The 5DX System contains several pneumatic assemblies. Pneumatics operate the
inner and outer barriers, the panel clamps on the XYZ Stage Assembly, and the
panel in place mechanical actuator.
System Controller and Expansion Chassis
Combined, the System Controller and Expansion Chassis provide the necessary
hardware I/O connections to operate the 5DX System. The System Controller
controls the 5DX System operations. Interaction is provided by the User Interface.
The System Controller contains the Frame Grabber PCA, the Transceiver PCA, the
floppy and hard disk drives, the DAT tape unit and the CD-ROM drive. The
Expansion Chassis contains a fourteen-slot backplane and is where the Motion
Control, Camera Control, Modem, Serial Port and Receiver PCAs reside.
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