Section 2: General operation
Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
2-42
DMM7510-901-01 Rev. B / May 2015
Trigger tab
The Views Graph Trigger tab contains settings that define the trigger mode.
The Trigger Mode button allows you to select a predefined trigger model. Refer to Trigger mode
indicator.
Setting
Description
Source Event
Determines the event that is used to trigger measurements. You
can select:
•
Display TRIGGER Key: The trigger occurs when you press
the TRIGGER key.
•
External: The trigger occurs when an external pulse is
detected. The external pulse can come from a digital input
line, TSP-Link input line, or the rear-panel external input line.
•
Waveform: Select an analog edge, pulse, or window to
trigger.
Delay
The delay time before each measurement (167 ns to 10 ks); default
is 0 for no delay.
Position
The position marks the location in the reading buffer where the
trigger will occur. The position is set as a percentage of the active
buffer capacity. The buffer captures measurements until a trigger
occurs. When the trigger occurs, the buffer retains the percentage
of readings specified by the position, then captures remaining
readings until 100 percent of the buffer is filled.
Trigger Clear
This specifies whether previously detected trigger events will be
cleared. You can select:
•
Enter: Previously detected trigger events will be cleared.
•
Never: Any previously detected triggers are acted on
immediately and not cleared.
Edge
When the source is set to Digital, TSP-Link, or External, this sets
the type of edge that generates a trigger. You can set it to rising,
falling, or either.
Digital In Line
When the source is set to Digital, this selects the digital input line
that will generate the trigger (1 to 6).
TSP-Link Line
When the source is set to TSP-Link, this selects the TSP-Link input
line that will generate the trigger (1 to 3).
Level
When the analog edge waveform is selected, sets the signal level
that generates the trigger event. The level can be set to any value
within the selected measurement range.
Slope
When the analog edge waveform is selected, sets the slope to
rising or falling. Rising causes a trigger event when the analog
signal trends from below the analog signal level to above the level.
Falling causes a trigger event when the signal trends from above to
below the level.
High Frequency
Rejection
When the analog edge or pulse waveform is selected, enables or
disables high frequency rejection.
Level
When the analog pulse waveform is selected, this defines the pulse
level that generates an analog trigger event.
Condition
When the analog pulse waveform is selected, the condition defines
if the pulse must be greater than or less than the pulse width
before an analog trigger is generated.
Polarity
When the analog pulse waveform is selected, this determines if the
trigger occurs when the pulse is above the defined signal level or
below the defined signal level.
