Tapping in the time scale at the right margin of the waterfall changes the mode of operation from
real-time to recent history. In the recent history mode, the waterfall displays selected data from
the most recent several minutes. The displayed data can be moved up and down with finger swipes
along the right edge of the display.
While the stored information is being displayed, the FLEX-6400M / FLEX-6600M continues to record
the live waterfall and add it to the top of the stored information. Depending on the amount of
information stored, the oldest information at the bottom may be lost.
Tap the Live button at the top right of the waterfall to return to the real-time display.