I had the scale initially set too high. Since then I was surprised that when I had already directed the bowl almost to the ground, I still had a great signal. Then I briefly looked in the manual and it went well. Align scale to 2 points and the bowl coarsely. Then start on 5 points and adjustments. At some point, the scale is then knocked out to 8/9. Now I have a great signal. And while the display is lit, the alignment went quite well even in low light.