GE PM880 - Entering User Functions

Chapter 4. Using Special Features
58 Model PM880 Portable Hygrometer User’s Manual
4.8.2 Entering User Functions
User functions enable you to program mathematical equations. You can use
any parameter in the meter to calculate a different parameter. Use the
following steps to enter a user-defined equation:
4.8.2a Accessing the User Function Command
1. If the menu is not active, press [MENU].
2. Use the arrow key to scroll to Program and press [ENTER].
3. Use the arrow key to scroll to User Functions and press [ENTER]. A
screen similar to Figure 24 appears.
Figure 24: User Functions Window