CEM DT-9989, Руководство пользователя, Страница: 43 / 68

2 2 Connector
2 3 Help Section
2 4 System Settings
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Connector is adopted for the connection of probe and oscilloscope, the probe and connector
must be used when the measuring frequency of waveform is above 1KHz.
When measured signal is a waveform of DC or its measuring frequency is below 1KHZ, the
stick of general oscilloscope can be adopted.
If the device is suspended, don’t need to differentiate phase line or null line when measuring
industrial frequency voltage.
For the convenience of user, built-in simple instructions in Digital Oscilloscope is available,
part one presents the function of various function keys, part two indicates quick start use.
Press F1 (HELP), enter into help section
Press F4, quit from help section
1. Digital Oscilloscope can adjust relative trigger mode according to input signal.
2. Setup the coupling mode according to input signal.
3. Setup the warning tone is activated or not.
Chart 2.4.1
Set up by taking the following steps:
1.Running state (RUN), press F2 according to the
prompt (SET), enter into setup interface(SYSTEM SETUP).
2.Press “
” by user’s needs to select the function
in chart 2.4.1
3.Press “ ” by user’s needs to select the observation
in chart 2.4.1
4.Press F4, save the settings and quit, see picture 2-4-1.
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Picture2-4-1
Function
Trigger mode
Coupling mode
Warning tone observations
Rising edge, falling edge, no trigger
AC coupling, DC coupling
Key tone, no key tone
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Oscilloscope Section