User Manual

6 To Make Measurements RIGOL
MSO4000D/S4000 User’s Guide
6-19
Frequency Counter Measurement
The hardware frequency counter supplied with this oscilloscope can make more
precise measurement of the input signal frequency.
Press Measure  Counter to select anyone of CH1 to CH4, EXT or D0-D15 as the
measurement source. The measurement result is displayed at the upper right corner
of the screen and you can identify the current measurement source according to the
color of the icon. The following figure is the result of frequency measurement of the
input signal of CH1.
Select “OFF” to disable the frequency counter measurement function.