User Guide

490 Series Microscope
AmScope Proprietary Page 14 of 64
2.8 Setting the Stage’s Stop-Limit
1. Unlock the stop-limit on the stage.
2. Adjust the stage to the desired maximum
height.
3. Lock the stop-limit. This allows you to limit
the movement of the stage from the bottom of
the range up to the point it is set at.
4. To reset it, unlock the stage and reset the
stage to the new height.
If no limit is desired, simply unlock the stop-limit.
2.9 Adjusting Focus Tension
1. To adjust the tension of the focusing knobs,
first locate the black ridged tension knob on
the inside of the coarse focusing knob.
2. To decrease tension, rotate the adjustment
forward, towards the stage
(counterclockwise). To increase, rotate away
from the stage (clockwise).
Note: If your stage is slipping down after setting the focus, you need to increase the
tension.