RS Pro RS HS-608 Manual De Instrucciones página 21

Oscilloscope Section/English
2 5 Fast/slow display -
• When the measured signal is unstable, displayed
observation may cause eye fatigue. Digital Oscilloscope offers the selection of fast/slow
display function, press F3 (F/S), fast display can be switched to slow display, which can
efficiently improve eye fatigue. "Slow" turns to yellow at status bar of interface, means
activated.
•If press again, switch back to fast display, "Fast" turns to yellow, means fast display
activated.
•Default fast display after star t up.
2-6 Vertical System
•Press " "to adjust vertical system, default attenuation ratio, that is, preselected frequency
(xxV/div) of adjusting input end after start up presents the status of last shutdown.
•While selecting DC coupling, as direct current exist in waveform, it may turn to one side,
press "MODE", switch function of "
waveform back to middle position by pressing "
measurement.
2-7 Horizontal system
•Press " " to adjust horizontal system, default adjust of sample rate after startup, that is,
xxKSa/S.
•Press "MODE" then " " if user wants to change the trigger horizontal position in memory
(trigger displacement).
2-8 Trigger System
Trigger function confirms the time of collecting data and displaying waveform for the
oscilloscope.After correctly set up the trigger, the oscilloscope can switch unstable displayed
result to meaningful waveform.
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waveform presents jump; long-term
" to adjust waveform up and down position, make the
", for convenient observation and
13/08/2017 Version No. 001
2-8-1 Trigger Mode
•2 kinds of trigger mode for the oscilloscope: raising edge and falling edge. When signal
voltage across trigger electrical level, raising and falling edge of input signal is adopted for
triggering.
•Raising edge setup: press "setup" "trigger"
→
•Falling edge setup: press "setup" "trigger"
→
•If select "setup" "trigger" "no trigger"
→ →
synchronizing signal and any signal measured by fast display.
2-9 Channel
•Oscilloscope vertical response should be slightly greater than its bandwidth, so that FFT
frequency spectrum can be higher than effective frequency of oscilloscope bandwidth.
However, amplitude close to or higher than the bandwidth will not be accurate.
•If channel coupling mode is DC, user can measure DC component of signal by observing
the difference between waveform and signal ground.
•If coupling mode is AC, DC component is filtered in the signal. This mode makes user
easily display the AC component of signal with higher sensitivity.
Channel Settings
•Channel coupling settings
Measured signal is sinusoidal signal containing DC bias:
•Press "setup" "coupling" "AC", select AC coupling mode. DC component in measured
→ →
signal is separated.
•Press "setup" "coupling" "DC", select DC coupling mode. DC and AC component in
→ →
measured signal can all pass.
2-10 FFT frequency spectrum analysis
Time signal can be converted into frequency component (frequency spectrum) by using FFT
mathematical operation (Fast Fourier Transform). Observe following signals by FFT mathematical
mode:
•Analyze harmonic wave in power line
•Measure harmonic wave content and distortion in system
•Measure impulse response of filter and system
•Analyze oscillation
13/08/2017 Version No. 001
Oscilloscope Section/English
"raising edge" "save and quit".
→ →
"falling edge" "save and quit".
→ →
"save and quit", the oscilloscope may lose
→
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