2-26
IM 701240-01E
Trigger Hysteresis «For procedures, see sections 6.5, and 6.10 to 6.16.»
If there is insufficient trigger level width such as when noise is present in the trigger source,
the trigger point fluctuates each time a trigger is activated. This causes the displayed
waveforms to be unstable. To solve this problem, a specified margin (hysteresis) is added
to the trigger level. You can select the trigger hysteresis from the following:
,
, and
. The hysteresis width varies depending on the input module.
Trigger is activated
Hysteresis width
Trigger Hold-off «For procedures, see section 6.4.»
Trigger hold-off
refers to the act of temporarily stopping the detection of the next trigger
once a trigger has been activated. This function is useful when observing a pulse train
signal, such as a PCM code, and you want to display the waveform in sync with
repetitive cycles; or when using the history memory function described later and you
want to change the waveform acquisition period.
Input signal
Repetition period: T
Trigger level
Trigger source
signal
t
Trigger signal limited by hold off time t (when the trigger slope is set to rising edge)
Action-on-Trigger «For procedures, see section 6.18.»
A specified action can be executed each time a trigger is activated. The following five
types of actions are available.
Print the Screen Image Data (PRINT)
Prints the screen image to a specified printer.
Save the Screen Image Data (Image)
Saves the screen image data to the save destination specified in the IMAGE menu.
Save Waveform Data (Save to File)
Saves the waveform data in binary, ASCII, or floating format to the save destination
specified in the FILE menu.
Beep Sound (Buzzer)
Sounds a buzzer.
Send Mail
Sends an e-mail message to a specified address (when Ethernet interface option is
installed).
2.3 Setting the Trigger