# Changing Channel Bandwidth Affects Skew

Changing a channel's bandwidth after performing any deskew degrades the applied deskew.

If you need to make measurements at different channel BW settings, use setup files (see Save Setup Files):

1. For each BW setting:

1. Select the channel's BW setting.
2. Perform the Auto Deskew.
3. Save the Setup (File > Save.., Setup tab).

2. Recall the Setup for the desired measurement BW (File > Open Setup...).