Best Practice T-Scan5 Version 1.4

2 T-Scan 5 vs. TS50-A PropertiesTS50-AT-Scan 5 Range51 – 119mm (stand- off 80mm / total 68mm) 94 – 194mm (stand-off 150mm / total 100mm) Data rate20’000 points/s210’000 points/s Scan line frequencyUp to 140 HzUp to 330 Hz The big advantages of the T-Scan 5: Incredibly fast measurement of small features. If you go with the scan line width from 100% to 40%, the scan line frequency increase from 160Hz to 330Hz. Very nice data on edges Better feature extraction Better mesh on small details

3 Measurement Settings The smallest possible point to point distance is mm. Using this setting most application computers could have problems with this huge amount of points. A point to point distance of mm is a good starting point for surfaces. A point to point distance of mm is a good starting point for features. If you decrease the line width (5% steps) only parts of the camera chip need to be read and the scanner will deliver more lines per second (up to 330Hz). The smaller the exposure time the bigger the effect. Usually this feature is used in automation setups.

4 Line Frequency vs. Exposure Time 100% 40% Scan line width StandardShiny bright Dark Shiny Dark Exposure Time predefined Materials

5 Scanning Tips and Tricks Move the T-Scan in a constant speed perpendicular to the part. Release the trigger after each pull to let the software calculate small and straight patches. Do not generate one long and folded patch for the whole part! recommended

6 Scanning Tips and Tricks You get the best data quality of an edge, if you scan perpendicular to the edge.

7 Scanning Tips and Tricks You get more data on a surface, if you scan with the top face (face 2) of the scanner aligned to the edge. The reason is because the edge covers the field of view of the sensor.

8 Scanning Tips and Tricks You get more smooth data if you scan in direction of the cylinder axis.

9 Scanning Tips and Tricks You get less noisy data of an edge if you scan it perpendicular.

10 Scanning Tips and Tricks Decrease the noise of scan data on shiny surfaces without changing the scan settings In case you have stray points caused by e.g. shiny surfaces, a possible reason could be that the scanner is held in a way that too much laser light was reflected on the imaging sensor (total reflection). Such a situation can easily be avoided by changing the orientation of the scanner slightly so that total reflection cannot occur.

11 Scanning Tips an Tricks To scan this shiny pin, it is recommended to tilt the sensor. The Sensor is not able to detect which scan line is the reflection from the shiny surface and which one not. Even in the picture it is hard to decide which line is the correct one. When tilting the laser line remains sharp but the reflection gets blurred => Sensor can sort it out 2D view of the T-Scan’s sensor recommended

12 Measurement Settings Surface If you check the box «Check angle of incidence» it will filter out all the points which are bigger then the value you entered. The smaller the angle the less data you acquire, but the quality of the point cloud increases. moving direction

13 Measurement Settings Surface If you scan to fast over an almost parallel edge the contour filter will remove the data. The contour filter checks your scanning strategy and analyze the neighboring scan lines an prevents the connection between points if the strategy is not adequate.

14 Measurement Settings Material selection As the T-Scan 5 is a line scanner we have the possibility choose between different material properties: The most of the surfaces are scan able with the Standard material selection. This selection should be the starting point. If the Standard material selection does not supply satisfying results try the other filters provided (the name already describes the property of the materials). If you are not satisfied with one of these predefined materials, you are able to define you own one filter. See next page …

15 Measurement Settings new Material It is possible to change two parameter for define a new material: Exposure time [in mm] Reflection filter

16 Measurement Settings new Material In general there are two parameters you have to define for a new scan material. The bigger the Exposure Time is the more data you get even from dark material but the slower the scanner is => Blur effects The smaller the Exposure Time the quicker the scanner is but the light coming back might be not enough for all materials => Danger of loosing good data The Exposure Time should to be as small as possible! Step down with the exposure time until you see that good data begin to miss to find the optimal setting.

17 Measurement Settings new Material In general there are two parameters you have to define for a new scan material. A strong Reflection Filter eliminates all false points but may also discard good points. A weak Reflection Filter leaves as many points as possible but therefore might also leave some bad points.

18 Measurement Settings Reflection Filter Examples:shiny/brighttransparent/shiny/dark Most of the materials could be scanned with the standard filter. Here are examples for comparison the other filters of selected materials. StandardWeakMediumStrong Exposure Time 1 ms Exposure Time 5 ms

19 T-Scan Measurement Range Near 94 mm Standoff 144 mm Possible Far End 194 mm Far End 174 mm Reduces the most noisy data at the far end 2. Reduces the cone effect

20 T-Scan Measurement Range The best accuracy and the least noisy data you get if you scan with the standoff distance. The Scanner LED’s will guide you to optimal distance The more far away you scan from the optimal distance (standoff) the more noisy will be the point cloud, also if you scan closer. It is possible to open the range of the scanner. There for you have two possibilities. Change the max. scan line length and expand the range. MaxScanLineWidth (max. value 125 mm) CustomCloseEnd(max. value 50 mm) CustomFarEnd (max. value -50 mm default -30mm)

21 Setup LAN Configuration There are two possibilities to set up the system. (orange or blue) If you have a second LAN port or a USB to LAN adapter you could communicate directly with the ATC 900 and do not have to wire via Scanner Controller. If you have a connection via Scanner Controller keep in mind that it should be on even if you just want to communicate only with the Tracker. Application PC Trigger/Probe Y-Cable LAN Motor- & Sensor- Cables Scanner Cable AT901 ATC900 Controller T-Scan 5 Controller (incl. embedded PC) LAN T-Scan 5 LAN

22 Setup LAN Configuration There are two possibilities to set up the system. (orange or blue) If you have a second LAN port or a USB to LAN adapter you could communicate directly with the ATC 900 and do not have to wire via Scanner Controller. If you have a connection via Scanner Controller keep in mind that it should be on even if you just want to communicate only with the Tracker. Application PC Probe/Trigger - Cable LAN Motor- & Sensor- Cables Scanner Cable AT960 AT Controller T-Scan 5 Controller (incl. embedded PC) LAN T-Scan 5 LAN

23 Further Hints The warm up time of the scanner head is 30 minutes. If on an application PC the TwinCAT is installed and you want to work with a TS50 again, it is recommended to stop the TwinCAT.