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SDS1000X-E User Manual
60
WWW.SIGLENT.COM
Note: trigger coupling has nothing to do with the channel coupling.
Trigger Coupling
Press the Setup button on the front panel to enter the TRIGGER function menu, and 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 any 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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