Campbell Scientific AP200 CO2/H2O Atmospheric Profile System - Manual (Page 67)

Appendix A. Keyboard Display Menu
The AP200 CRBasic program includes a custom menu for the keyboard
display. This menu provides a user-friendly interface for some of the more
common functions which are shown below. The custom menu can be bypassed
such that the user can interact directly with the datalogger through the
datalogger’s default menus. To bypass the custom menus, select < System
Menu>.
A-1