6-8
IM WT5000-01EN
Trigger (Trigger Settings)
If you set the update mode to trigger, set the trigger.
The trigger determines when a waveform is displayed. A trigger is said to “occur” when the trigger condition is
met and a waveform is displayed.
Trigger mode (Trigger Mode)
The trigger mode determines the conditions for updating the display. Select from the following options.
• Auto (Auto)
If the trigger conditions are met before an approximately 100 ms timeout, this instrument updates the
displayed waveforms on each trigger occurrence. If not, this instrument automatically updates the displayed
waveforms. If the period of the trigger signal is greater than 100 ms, the display is updated as the two
conditions described above alternate. If this occurs, set the trigger mode to normal.
• Normal (Normal)
The instrument updates the waveform display only when the trigger conditions are met. If no triggers occur,
the display is not updated. If you want to view waveforms that this instrument cannot trigger on, or if you want
to check the ground level, set the trigger mode to auto.
Trigger Source (Trigger Source)
The signal that this instrument checks for the trigger condition is referred to as the trigger source. Select from the
following options. The available options vary depending on the installed elements.
U1, I1, U2, I2, U3, I3, U4, I4, U5, I5, U6, I6, U7, I7, Ext Clk (external clock)*
* When you select Ext Clk, the external signal applied to the external clock input connector (EXT CLK) on the
rear panel is used as the trigger source. For the EXT CLK connector specifications, see section 4.3 in the
Getting Started Guide, IM WT5000-03EN. When Ext Clk is set as the trigger source, the trigger slope and
trigger level are set as follows:
• Trigger slope: Falling. Trigger slope setting will be invalid.
• Trigger level: 0.0% Trigger level setting will be invalid.
Trigger Slope (Slope)
Slope
refers to the movement of the signal from a low level to a high level (rising edge) or from a high level to a
low level (falling edge). When the slope is used as one of the trigger conditions, it is called a trigger slope.
The following trigger slope settings are available for triggering the instrument.
•
: An edge is detected when the trigger source changes from a level below the trigger level to a level above
the trigger level (rising).
• : An edge is detected when the trigger source changes from a level above the trigger level to a level below
the trigger level (falling).
•
: The instrument triggers on both rising and falling edges.
6 Computation and Output
