Triggering 10-7
Bench defaults
The bench defaults are listed as follows. They are also denoted in Figure 10-1 by the “✛”
symbol.
• Arm-In Event = Immediate
• Trigger-In Source = Immediate
• Arm Count = 1
• Trigger Count = 1
• Trigger Delay = 0.0 sec
• Delay Action = 0.001 sec
• Source Trigger In Event = On
• Delay Trigger In Event = Off
• Measure Trigger In Event = Off
• Trigger Out Events = All Trigger Out Events are disabled (off)
• Arm Out Events = Off
• Event Detection Bypasses = Never (both layers)
When the output is turned ON, the SourceMeter will run in a continuous loop around the
trigger model. After each Measure Action, operation will continue at the top of the trigger
model. The SourceMeter can be returned to idle by turning the output OFF.
Operation summary
The trigger model is designed to offer versatility for the various source-measure applica-
tions. Typically, it allows you to perform a specified number of measurements at various source
levels.
For example, assume you want to perform three measurements each at two different
V-source levels (1V and 2V). To do this, set the arm count to two, the trigger count to three,
and use a 6-point Custom Sweep configured as follows:
P0000 = 1V
P0001 = 1V
P0002 = 1V
P0003 = 2V
P0004 = 2V
P0005 = 2V
When the sweep is started, operation falls into the Trigger Layer and performs three mea-
surements at the 1V source level. Operation then loops back into the Trigger Layer to perform
three measurements at the 2V source level. The six readings are stored in the buffer.
Note that after the sweep is finished, the SourceMeter does not return to idle. Operation con-
tinues at the top of the trigger model. Subsequent measurements are performed at the 2V level
and are not stored in the buffer.
For details on the Custom Sweep, see Section 9.
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