Keithley 2002, Getting Started Manual, Page: 36 / 95

Trigger
The following overview is intended to acquaint you with basic triggering. For a complete ex-
planation, see the Model 2002 User’s Manual. The simplified model for triggering is shown in
Figure 9. It is known as the trigger model.
Idle
The instrument is in idle whenever it is not within one of the layers of the model. The front
panel ARM indicator is off when in idle.
When the Model 2002 is taken out of idle by pressing TRIG (or sending :INIT or
:INIT:CONT ON over the bus), the ARM indicator turns on and operation proceeds into the Arm
Layer.
Arm
Layer
Scan
Layer
Measure
Layer
Yes
No
Arm
Count
Scan
Count
Measure
Count
Yes
No
Yes
No
Device
Action
Output
Trigger
Idle
Another
Arm
?
Another
Scan
?
Measure
Event
Arm
Event
Scan
Event
Another
Measure-
ment
?
Figure 9
Simplified
trigger model
Measurement Options 2-11