User manual

38
UNI-T
®
UT4000 User Manual
X-Y Mode
This mode is suitable for CH1 and CH2 only. After selecting the X-Y display mode, the
horizontal axis will display the CH1 signal, while the vertical axis will display the CH2
signal.
Figure 2-22 Waveform display in X-Y mode
Caution :
In the normal X-Y mode, you can adjust waveform amplitude with VOLTS/DIV of the
two channels. Adjusting the SEC/DIV time base knob will result in a lissajous figure of
better display quality.
The following functions are disabled in the X-Y display mode :
 Automatic measurement mode
 Cursor measurement mode
 Reference or maths waveform
 Vector display type
 Horizontal [POSITION] knob
 Trigger control
Key points :
Display Type : Vector display fills the space between adjacent sampling points in display.
The dot mode displays only the sampling points.
Refresh Rate : Refresh rate is the number of times the digital storage oscilloscope
refreshes the waveform display per second. The refreshing speed affects the capability to
observe signal movements speedily.