Ceyear 4051 Series, User Manual

Page: 105 / 751

4. Operating Instruction
4.2 Advanced operation guide
91
 Press 【 Amplitude/Y Axis 】 , [RefLevel] and enter 10 dBm.
Step 4: open a marker, set it to the peak of 10 MHz reference signal and then set center frequency as
marker frequency (10 MHz):
 Press
【
Peak Search
】
.
 Press
【
Marker →
】
and [Marker → Center Freq].
Step 5: trigger a second delta marker:
 Press 【 Marker 】 and [Delta].
Step 6. increase center frequency to 10 MHz in order to observe 20 MHz harmonic of 10 MHz reference
signal:
 Press
【
Frequency
】
, [Center Freq] and
【
↑
】
.
Move the first marker and the delta marker to the left of the screen at the peak of 10 MHz reference signal.
Step 7. move delta marker to peak frequency of 20 MHz harmonic signal:
 Press
【
Peak Search
】
.
―←2‖ shown on the left of the screen in Fig. 4.6 indicates that 10 MHz reference signal has a lower frequency
than the scope displayed on the screen. Delta marker 1R2 appears on the 20 MHz harmonic frequency point.
Delta marker result shows difference in frequency and amplitude between 10 MHz reference signal and 20
MHz harmonic signal.
Fig. 4.6 Delta marker of two signals on different screens
Step 8. close all markers:

Press 【 Marker 】 and [OFF].