AFT05K

The AFT05K is our basic version of automatic functional testing equipment, which can perform programmable functional tests on a wide variety of electronic boards and finished devices.
The AFT05K has an extensive number of resources for different kinds of stimulation and measurements of electrical parameters, to meet the testing requirements of most electrical and electronic devices manufactured today.
As described in the comparative table, the AFT05K has an adequate number of power and low voltage relays and can therefore control real loads such as motors, resistors, etc. also at high voltage.
In particular, all our equipment is sized so that 220V mains voltage circuits, i.e. circuits with peaks of 250V+ can be controlled, and equivalent parameters, such as voltage and current, can be measured.
The AFT05K also features an open collector to control circuitry up to 24V, such as solenoid valves, etc. to simulate for example the pressure of keys, microswitches, etc.
Measurements are taken by an integrated National Instruments digital multimeter that can detect AC/DC current and voltages up to 250V; this multimeter can also measure resistance, with single and dual precision. The multimeter is connected to the device to test through several high and low voltage boards, called matrices. The matrices consist of relays, with programmed switching to connect the multimeter to different testing points.
Equipment includes several low and high voltage detectors which are optically isolated from the circuit being tested. 
The PC serial port is considered a resource of the AFT05K and is therefore programmed.

A fixture is usually designed for each device to test, particularly for the production of a large number of equipment and to assist the operator. The fixture consists of a bed of nails, to connect the device under test to the AFT05K, and a mechanism to make handling easier.
External cables connect the machine resources to the fixture.

The AFT05K is programmed by PC using a highly innovative system, which allows a number of tests to be written in a simple way, which is also user-friendly for non-testing specialists, such as production engineers or designers.
The programmer has an Excel-like table and is assisted in allocating system resources to the circuit concerned, and also defines controls, for each resource, in the case of relay operation, or specifies a measurement in order to identify voltages, currents, etc. 
The writing time for a test programme is far shorter than usual and setting is also far quicker.
If servicing equipment and revising the test programme, it must be possible to easily access the original programme and make the necessary changes; in this situation, which is entirely normal, the Eldig system performs exceptionally well.
Besides control and measurements, the test programme also schedules times, as delays after enabling and as retention times for measurements; actions to take in the case of an erroneous test are also proposed, such as not performing other tests and immediately switching off the power supply, or saving the error and continuing. Manual operations the operator has to perform are also included, such as visual inspection of LEDs, the display, trimmer, etc., with the possibility to stop the test programme and resume it at the end of the manual operation. External applications can also be called up, such as the software of a flash programmer, or any other executable application. Complete control of the serial interface is also possible, with commands being relayed and received with control of individual bytes also at a bit level, or as aggregates in both a hexadecimal format and ASCII.

The Eldig Vision equipment shown, is integrated with the AFT05K as an option. The same method is used for programming, with one or more cameras as system resources.