- 74 / 83 -LANGEREMV-TechnikDE-01728 Bannewitzmail@langer-emv.dewww.langer-emv.de FLS 106 IC set / FLS 106 PCB setOperational Notes19Checking the Measurement Set-Up before each Use19.1A visual check of the scanner, components, attachments, measuring devices, DUT and cableguides should be performed before each measurement. Should any damage be discovered, thishas to be eliminated before putting the scanner into service. Contact Langer EMV-Technik GmbHshould you have any queries (Chapter 25).Adjusting the Exact Height of the Probe Tip above the DUT19.2In many cases, the distance between the probe tip and the DUT has to be set exactly.The probe tips – in particular the tips of ICR probes - are highlysensitive to mechanical stress!Possible damage due to careless or incorrect handling or incorrectscanner adjustments!Avoid touching the probe tip, even with the DUT!Carefully observe the distance between DUT and probe tip!Use appropriate values for downward movements to avoid contact between DUT and probetip.The DUT must be aligned parallel to the T-slot table to prevent the probe tip fromtouching the DUT's surface during horizontal movements, especially if the distancebetween the probe tip and DUT is very small.The following instructions will help you make the necessary adjustments:1. Position the probe at a safe height above the desired location.2. Place the prism (Figure 110) alongside the desired location. The slanted surface of theprism acts as a mirror that allows you to observe the vertical distance between the probetip and DUT surface with the DM-CAM. The DM-CAM has to be adjusted so that thevertical distance between the probe tip and DUT can be clearly recognized by means ofthe prism.3. Move the probe down in suitable increments until it reaches the desired height. Whiledoing so, always observe the distance between the probe tip and DUT with the DM-CAMand readjust the camera's focus as required.4. The smaller the distance between the probe tip and DUT, the smaller the incrementshould be. The smallest adjustable increment is 20 μm.!Caution!
