Scan Length - Selects the vertical scan length. The longer the scan, the greater the height measuring capability, and the longer the measurement time. It is recommended to set to the smallest value that encompasses the part details. When set to Extended, the user enters the length of the scan, which is longer than the selectable lengths. The value entered should be the vertical range of detail in the part plus 10%.
Scan Lengths have two options: It is very important to understand the difference between the two scan length options.
- Numerical scan length choices from 5um-145um (length options change depending on measure type and measure mode) are bi-polar scans which utilize the PZT scanner with only a center scan origin option.
- Extended scans use the Z-motor and you have options for setting the scan origin to top, center, or bottom.
Scan Origin - Selects the location of the part relative to the full scan range when the scan is initiated. Scan profiles for each control option are shown below.
Important to note that the scanner only collects data on the downward part of the motion.