How much does the electrostatic gun automatic testing system cost

SmartZapAutomated electrostatic gun testing systemIt is a fully automatic electrostatic gun tester with automatic fault detection function, and its performance is far superior to manual electrostatic testing. Compliant with the IEC61000-4-2 testing standard.

Key Features:

-Support various types of electrostatic guns

-Five side strikes (top and four sides)

-Automatic fault detection

-Selection and placement

-Automatic replacement of gun head (exposed to ß à air)

-Connector plug/unplug

-DUT Flip

-Customizable report generation

-Define test points through a graphical interface

-Automatic DUT offset correction

-Keys and touch screen fingers

-Discharge brush

-Strike table compliant with IEC 61000-4-2

-Pin testing

-Script based testing process

SmartZapAutomated electrostatic gun testing systemFault detection:

The FD module includes monitoring of four analog signals and four digital signals, input from photoelectric sensors and 1KHz sound, communication with call box, relay, and 120V/5A power supply for DUT power cycling.

-Perform Boolean operations on monitoring signals to screen for fault types.

-Macro function, used to gradually control fault detection and power cycling programs.

Automation function:

All automatic functions of the pneumatic system do not require additional electric accessories.

-DUT retrieval and placement

-Gun head replacement

-Connector plug/unplug

-DUT Flip

-DUT offset correction: When the DUT deviates slightly from its original position, the defined test points will be automatically adjusted.

SmartZap specifications:

mechanical arm

SmartZap - Options:

The method for system level ESD testing has been standardized in the IEC 61000-4-2 standard. This standard sets requirements and provides information about test settings. The standard setting organization considered manual testing, but did not rule out robot testing. Considering manual testing, many minimum parameters have already been set, resulting in repeatability issues.

The three main parameters are:

·Discharge frequency

The discharge frequency for each test point is set to 10. This is a very low number to capture sensitive windows. In a short period of time, the tested equipment became more sensitive to electrostatic discharge. These windows are usually caused by software activity. Bob Renninger and Habiger studied the impact of opportunity windows and the number of pulses required to achieve statistical stability, and applied it to the draft C63.16 standard in ANSI ESD. In short, the analysis suggests that people must use more pulses to capture the window of opportunity. The accurate number depends on the distribution of sensitivity over time. The standard setting organization knowingly ignored these facts because members did not want to force each laboratory to perform, for example, 100 discharges per test point, especially in air discharge mode. However, it is necessary to obtain statistically stable results from a large number of discharges.

·Approach speed, approach angle

The air discharge test largely depends on the length of the arc. The length of the arc can vary greatly for the same test point and voltage. These changes are partly due to statistical properties, but are also influenced by the method of execution. At higher approach speeds (which is the intention of the standard setting body), the average rise time is lower and the average peak value is higher. This standard has little in-depth understanding of the expected approach speed. Some testing laboratories even drag charged air discharge bottoms over products (in contact with plastic surfaces) to see if discharge occurs. This is a very dangerous approach as it may result in an unrealistic low rise time for ESD with high overvoltage. It is important to control the approach (directly to the expected discharge point) and the angle of the electrostatic discharge generator, as this will affect the discharge current (weak) but strongly couple the product. If a much faster rising discharge occurs, the operator cannot understand it in manual system level testing.

·Voltage increment

The voltage is usually set in large increments, such as 2, 4, and 8 kV, and only reports pass or fail. From the perspective of a comparative laboratory, it is important to understand the level of malfunction. For example, if a laboratory passes 8 kV (including 8 kV), but the product fails at 8 kV after retesting in another laboratory, the uncertainty of the test may only be 0.001 kV. Of course, the actual uncertainty in ESD testing is much higher, but this example illustrates that we not only need to pass/fail, but also need the level of failure. This situation can only be detected when the voltage increases in relatively small increments (possibly 1000V). The standard setting body does not want to require this because the pressure on hand operators is considered too high.

·Repetition rate

The test for air discharge is usually conducted at 1 pulse per second. In theory, if (1) the charge between discharges can be eliminated, (2) the functionality of EUT (3) can be verified, and the ESD generator can be moved back to the discharge position, the testing speed will be much faster. In manual testing, this is difficult to achieve. However, in robot testing, even faster speeds can be achieved in air discharge testing.