Chapter 8. Maintenance and Troubleshooting
148 Model PM880 Portable Hygrometer User’s Manual
8.8.3b Setting Up PM880 (cont.)
Figure 70: Flash Update Window
8.8.3c Downloading User Program Upgrades
1. Be sure the infrared sensor on the meter has a clear path to the infrared 
adapter on the PC.
2. Return to the PC Hyperterminal program. In the Hyperterminal 
window, pull down the Transfer menu and click Send File. A window 
opens similar to Figure 71.
Figure 71: Transfer Menu Send File Window