Figure 4-19 Sampling with Peak Detect Mode
4.22 Observing Waveforms with use of Persistence
Select the Persistence function if you want to observe continuously the dynamic signals.
1. Press DISPLAY button to show Display Mode menu;
2. Keep pressing F4 button to select between 1sec, 3sec, 5sec, Infinite or Auto options. If display mode is
set to Infinite, dynamic signals will be kept on the screen. When set to Auto, the Persistence function will
turn on accordingly.
Figure 4-20 Persistent Display for 3 Seconds
4.23 Selecting AC Coupling
The screen displays both AC and DC voltages if the oscilloscope is set under DC coupling. If only the small
AC signal mixed in the DC signal is expected to display, please select AC coupling mode.
To select AC coupling, do the following:
1. Press CHANNEL button to display Channel menu;
2. Press F2 button to set Coupling to AC.
26 UTD1000L User Manual