Triggering
Operation
326
Figure 314:The Edge Trigger Menu
Use the edge trigger menu to perform these tasks.
Select the Trigger Source
Press the main menu button Source. Use
the side menu to select from these options.
H Press Ch1 or Ch2 to set the trigger source to one of the input channels.
H Press Ext or Ext/10 to set the trigger source to the EXT TRIG input on the
front panel. Ext/10 attenuates the external input signal by a factor of ten.
Note that while the instrument can trigger on external trigger signals, it
cannot display them.
H Press AC to set the trigger source to the oscilloscope line voltage signal.
Select Trigger Coupling
Press the main menu button Coupling. Use
the side menu to select from these options.
H Press DC to select DC coupling.
H Press AC to select AC coupling.
H Press HF Reject to select high frequency reject mode. High frequency
rejection removes the high frequency portion of the triggering signal. This
allows only the low frequency components to pass on to the triggering
system. High frequency reject mode attenuates signals above 30 kHz.
H Press LF Reject to select low frequency reject mode. Low frequency
rejection is the opposite of high frequency rejection. Low frequency reject
mode attenuates signals below 80 kHz.
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