EFA Picture Desktop
The desktop devices are the entry level version of the EFA Picture devices. They are not tied to the use in a production line and can therefore be used extremely flexibly for the creation of different recordings. This allows recordings of SMD or THT-equipped boards as well as images for final inspection, goods receipt or simply for documentation.
To ensure this flexibility, the desktop devices have no automated handling. The operator must take care of the transport of the printed circuit board and the correct insertion into the device. The circuit board must not be damaged or the time lost excessively.
Correct handling of printed circuit boards is therefore of particular importance for desktop devices. In addition, handling is often made difficult by an inadequate circuit board design or by an unusual circuit board shape. The circuit board is then too densely populated at the edges or simply not rectangular.
It is therefore helpful in any case to have free access to the support rails and a finely adjustable adjustment of the width of these support rails. Both were realized in the devices of the EFA Picture series! The support rails are over one Width of spindle can be changed precisely and the support mechanism is completely removable from the device.
Diverse lighting concepts
The range of applications for devices from the EFA Picture series is diverse and the requirements for lighting are just as diverse.
On the one hand, that requires Check the correct assembly of printed circuit boards an individually coordinated ratio of reflected light to dark field lighting. While the reflected light is responsible for the general brightness, the dark field illumination allows a significantly better detection of surface structures. Are components such. B. not labeled with a color, but the label was burned in with a laser, then a reflected light alone is not enough. Or if the alignment of components can only be recognized on bevelled edges, then dark field lighting is also very helpful here.
On the other hand, the Illumination of the ceramic substrate a printed circuit board z. B. checking printed circuit boards. Here too, correct coordination between the incident light illumination and the illumination of the substrate is essential for a successful overall picture. Since the conductor tracks are produced using the additive process, the penetration of the light changes from conductor track level to conductor track level.
Against that stands Checking an even paint coating in the foreground, then the lighting must be in the ultra-violet area. Most paints react to UV radiation with fluorescence, which can then be photographically recorded and evaluated.
The desktop devices of the EFA Picture series also support one Combination of these different types of lighting during a recording. This means, for example, that a recording for checking the correct assembly and, at the same time, a recording for checking the uniform paint coating can be created in one work step.
Different device sizes
The desktop devices are currently manufactured in two different sizes, but they only differ in the device width!
In the Standard variant are printed circuit boards with a length of up to 470 mm supported. This is sufficient for most boards! Nevertheless, there are always outliers and that's why wide variant developed. In this variant, the Dektop device is 100 mm wider, so that circuit boards with a length of up to 570 mm can be included.
However, the length of a printed circuit board that can actually be photographed also depends on the resolution selected. The higher the resolution, the smaller the field of view of the camera and the shorter the imageable length of the circuit board. Therefore, it may well be that the wide device variant is also suitable for boards with a length of less than 470 mm.
All devices in the EFA Picture series have powerful all-in-one touch computers with Intel iCore processors and adequately dimensioned main and hard disk storage. Therefore, not only the Total microscopic images Dedicated, but also the subsequent inspection with EFA Inspection® be performed.
While the creation of the overall picture can be triggered by touching the touch screen, the subsequent inspection requires the operator to concentrate over a longer period of time. Therefore, the operator should be able to work with the desktop device as effortlessly as possible. For this it can be equipped with an external USB 3.0 port. B. a 27 ″ screen can be connected.
The ergonomically favorable situation then arises that the user carries out the inspection of the current printed circuit board while sitting, while at the same time the entire microscopic picture is taken of the next.