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SHS800X&SHS1000X User Manual
59
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Note: trigger coupling has nothing to do with the channel coupling.
Trigger Coupling
Press the Trigger Setup button on the front panel to enter the TRIGGER function
menu. Then, press the Coupling softkey and turn the Universal Knob or press the
Coupling softkey continually to select the desired coupling mode.
The oscilloscope provides 4 kinds of trigger coupling modes:
DC: allow DC and AC components into the trigger path.
AC: block all the DC components and attenuate signals lower than 8 Hz. Use
AC coupling to get a stable edge trigger when your waveform has a large DC
offset.
LF Reject: block the DC components and reject the low frequency
components lower than 2 MHz. Low frequency reject removes unwanted low
frequency components from a trigger waveform, such as power line
frequencies, etc. that can interfere with proper triggering. Use LF Reject
coupling to get a stable edge trigger when your waveform has low frequency
noise.
HF Reject: reject the high frequency components higher 1.2 MHz)
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