10-2 Triggering Models 2500 and 2502 User’s Manual
Trigger model (front panel operation)
The flowchart in Figure 10-1 summarizes triggering for front panel operation. The trigger
model is modeled after the remote commands used to control triggering. Refer to “Trigger
model (remote operation),” page 10-17. Key trigger model settings are included in the
flowchart. Note that the BENCH defaults are denoted by the “✛” symbol.
The primary actions of the trigger model are Source, Delay, and Measure. The source
action outputs the programmed voltage bias value, and the programmed delay provides a
settling period for the voltage bias source before the measurement is performed.
The trigger model consists of two layers (Arm Layer and Trigger Layer) to provide versa-
tility. Programmable counters allow operations to be repeated, and various input and out-
put trigger options are available to provide source-measure synchronization between the
Model 2500 and other instruments (via the Trigger Link).
Unless otherwise noted, the programmable aspects of the trigger model are performed
from the CONFIGURE TRIGGER menu. See “Configuring triggering,” page 10-14.
NOTE The trigger model and associated settings and commands affect both channels
simultaneously.
Idle
The Model 2500 is in idle when it is not operating in the Arm Layer or Trigger Layer of
the trigger model. When in idle, the ARM annunciator is off. To take the Model 2500 out
of idle, turn the output ON.
The Model 2500 can be returned to idle at any time by selecting the HALT menu item of
the CONFIGURE TRIGGER menu. See “Configuring triggering.”
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