Fluke user manual Introducing the Fluke 43B, Main Menu, Screen with 4 minutes time scale

Introducing the Fluke 43B	1
Main Menu

In both Sags & Swells and Record mode the recording time can be set to ‘Endless’. This refers to the compression method that is used to generate the plot. With the recording time set to Endless, the plot will start with the 4-minute time scale, and compresses each time the plot runs off the screen. At the end of 4-minutes, the plot will compress to half-screen and the time scale changes to 8 minutes. Fluke 43B does this by looking at every pair of min/max values and keeping only the highest/lowest values. The average values are recalculated. The screen will start with 4 minutes and go to 8 minutes, then 16 minutes, and so on up to 16 days, always keeping the worst-case or extreme values of each plot interval. If you do not know how long you are going to monitor, this will guarantee the best resolution. The process stops after 16 days. The figures below show this process.

Screen with 4 minutes time scale Screen with 8 minutes time scale

Screen with 16 minutes time scale

13