The frequency range is 4Hz~60MHz, while the duty ratio measurement range and method are as follows:
Turn on the power switch and press Hz% button.
Insert the red testing line into the VΩHz end and the black testing line into the COM end.
Connect the red testing line to high logic level, the black one to low logic level.
Read the measured value from the main display area. The secondary display area is the signal’s duty cycle. If the frequency of the measured signal is lower than the meter’s measurement range, the reading will be displayed as zero.
By pressing the RANGE key it is possible to select range manually. While displaying OL during manual range measurement, it is necessary to select a larger range. When OL displaying under the maximum range, it indicates the frequency exceeding 60MHz, so it is necessary to remove both the red and black probes from the measured circuit immediately.
Notice: Duty measurement can not be measured over 60.000kHz.