Trigger Level Adjustment - Agilent Technologies InfiniiVision 5000 Series User Manual

4
Triggering

Trigger Level Adjustment

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pre-trigger buffer, the trigger will not be found. If you use Normal mode and wait for the
trigger condition indicator to flash before causing the action in the circuit, the
oscilloscope will always find the trigger condition.
Some measurements you want to make will require you to take some action in the device
under test to cause the trigger event. Usually, these are single-shot acquisitions, where
you will use the [Single] key.
You can adjust the trigger level for a selected analog channel by turning the Trigger Level
knob. The position of the trigger level for the analog channel is indicated by the trigger
level icon (if the analog channel is on) at the far left side of the display when DC
T
coupling is selected. The value of the analog channel trigger level is displayed in the
upper-right corner of the display.
The trigger level for a selected digital channel is set using the threshold menu in the
Digital Channel Menu. Press the [D15-D0] key on the front panel, then press the
Thresholds softkey to set the threshold level (TTL, CMOS, ECL, or user defined) for the
selected digital channel group. The threshold value is displayed in the upper-right corner
of the display.
The line trigger level is not adjustable. This trigger is synchronized with the power line
supplied to the oscilloscope.
InfiniiVision Oscilloscopes User's Guide