Technical data

Trigger Commands 33
Agilent Infiniium 9000 Series Oscilloscopes Programmer's Reference 1051
• ":TRIGger:ADVanced:VIOLation:SETup:SHOLd:HoldTIMe (HTIMe)" on
page 1075
Mode Use MODE to select Setup, Hold, or both Setup and Hold time triggering.
You can have the oscilloscope trigger on violations of setup time, hold
time, or both setup and hold time. To use Setup Violation Type, the
oscilloscope needs a clock waveform, used as the reference, and a data
waveform for the trigger source.
Setup Time Mode When using the Setup Time Mode, a time window is defined where the
right edge is the clock edge and the left edge is the selected time before
the clock edge. The waveform must stay outside of the thresholds during
this time window. If the waveform crosses a threshold within the time
window, a violation event occurs and the oscilloscope triggers.
Hold Time Mode When using Hold Time Mode, the waveform must not cross the threshold
voltages after the specified clock edge for at least the hold time you have
selected. Otherwise, a violation event occurs and the oscilloscope triggers.
Setup and Hold
Time Mode
When using the Setup and Hold Time Mode, if the waveform violates
either a setup time or hold time, the oscilloscope triggers.
Data Source Use the data source (DSOurce) command to select the channel used as the
data, the low-level data threshold, and the high- level data threshold. For
data to be considered valid, it must be below the lower threshold or above
the upper threshold during the time of interest.
DSOurce Use DSOurce to select the channel you want to use for the data source.
Low Threshold Use the low threshold (LTHReshold) to set the minimum threshold for
your data. Data is valid below this threshold.
High Threshold Use the high threshold (HTHReshold) to set the maximum threshold for
your data. Data is valid above this threshold.
Clock Source Use the clock source (CSOurce) command to select the clock source,
trigger level, and edge polarity for your clock. Before the trigger circuitry
looks for a setup or hold time violation, the clock must pass through the
voltage level you have set.
CSOurce Use CSOurce to select the channel you want to use for the clock source.
LEVel Use LEVel to set voltage level on the clock waveform as given in the data
book for your logic family.
RISing or FALLing Use RISing or FALLing to select the edge of the clock the oscilloscope uses
as a reference for the setup or hold time violation trigger.
Time
Setup Time Use SETup to set the amount of setup time used to test for a violation.
The setup time is the amount of time that the data has to be stable and
valid prior to a clock edge. The minimum is 1.5 ns; the maximum is 20 ns.