When scanning human body, the Angle problem causes not to scan properly

Hello, I set the parameters of body scan when I was scanning the human body.

But I have to keep the scanner low to get the body and scan data properly.If it’s a little bit higher, when you scan from top to bottom, you can’t get the scan data.May I ask how to modify the parameters of the posture of this part of scanning, so that the data of human body can be scanned from multiple angles.