CEM DT-9989, User Manual, Page: 51 / 68

•Press F2 (return) under waveform displaying state, turn back to “Save Operations” state.
•Press “F4 (EXIT)” in waveform displaying state, turn back to waveform displaying state.
This chapter mainly introduces several application examples, these simplified examples focus
on some main functions of the oscilloscope, and user may take it for reference to solve some
actual testing problems.
•Simple measurement
•Cursor measurement
•Analyze detailed information of signal
•Analyze communication signal difference by mathematical computing function
Observe unknown signal in circuit, fast display the frequency and peak value of the measured
signal.
1. Auto search function
In order to fast display the signal, take following steps:
(1) Connect correctly the probe and connector.
(2) Press “AUTO”, wait a moment, the oscilloscope auto searches most of the displayed signals.
User can take manual adjustment on this basis, until the displayed waveform satisfies user’s
needs.
Note: the oscilloscope displays corresponding auto search result in waveform area on the
screen according to detected signal type.
The oscilloscope can auto measure most displayed signals. If needs to accurately measure
the frequency and peak value of signal, take following steps:
(1)measure signal frequency
•Press “HOLD”, freeze the waveform.
•Press “
” or “ ”, to move left cursor.
•Press “MODE”, to switch cursor, press “ ” or “ ”, to move right cursor.
•Read the time (cycle) between the two cursor press “MODE”, read corresponding frequency.
(2) measure signal peak value
•Press “F1 (V/F cursor)” after step 1, switch to horizontal cursors, press “
”or“ ” to move
up cursor.
•Press “MODE”, to switch cursor, press “
”or“ ” to move down cursor.
•Read the voltage value between two cursors.
3.Examples
3 1 Simple Measurement
3 2 Cursor measurement
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Oscilloscope Section