Chapter 4. Using Special FeaturesModel PM880 Portable Hygrometer User’s Manual 554.8 Entering a User ConstantUse the following steps to enter a user constant. The default multiplier is 1.1. 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 System and press [ENTER]. A screensimilar to Figure 22 appears.4. Use the arrow keys to move to the K PPMv text box and press[ENTER].5. Use the numeric keys to enter the desired value and press [ENTER].Figure 22: System Configuration WindowNext, do one of the following:• Use the arrow keys to move to another text box and enter additionaldata.• To exit and return to taking measurements, press [F3] (OK) and then[MENU].
