CEM DT-9989, Руководство пользователя, Страница: 42 / 68

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To avoid electric shock, don’t touch the metallic part of the probe top while connecting to
voltage source.
Measured signal by the oscilloscope is taken as a reference voltage to the ground, make sure
the ground terminal connect to the earth correctly, do not cause a short circuit.
1. Connect the oscilloscope probe with the connector, and insert into the input terminal of the
device.
2. If use probe hooked head, make sure the hook end firmly stuck in the probe.
3. Probe connection mode must be adopted while the measuring frequency of the signal is
above 1 Khz.
In order to operate the oscilloscope efficiently, user needs to know the following
functions:
Interface and buttons
Connector and probe
Settings of system
Vertical system
Horizontal system
Trigger system
Signal capture system
Display system
Measuring system
Memory system
Auxiliary system
Online help system
See the following picture:
Picture 2-1
Please follow the prompts of display interface for the use
of F1-F4.
HOLD hold key (freezes all the readings in the display)
MODE function key switch (switch the cursor and waveform
position)
AUTO auto search key (search waveform of unknown
frequency or amplitude)
REC record key (record current waveform content, the length is 10 pages)
direction key (adjust sample rate, preselecting amplitude and etc.)
1 3 2 Probe application
2 1 Interface and Buttons
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2.Function and Operation
42
Oscilloscope Section