User Manual

11-14 Triggering 2400 Series SourceMeter
®
User’s Manual
TLINk — Event detection occurs when an input trigger via the Trigger Link input
line is received. See “Trigger link,” page 11-19, for more information. With TLINk
selected, you can loop around the Arm Event Detector by setting the event detec-
tor bypass (ARM:DIRection) to SOURce.
NSTest — Event detection occurs when the start-of-test (SOT) line of the Digital I/
O port is pulsed low. This pulse is received from the handler to start limit testing.
(See Section 12, “Limit Testing,” and Section 13, “Digital I/O port.”)
PSTest — Event detection occurs when the start-of-test (SOT) line of the Digital I/
O port is pulsed high. This pulse is received from the handler to start limit testing.
(See Section 12, “Limit Testing,” and Section 13, “Digital I/O port.”)
BSTest — Event detection occurs when the start-of-test (SOT) line of the Digital I/
O port is pulsed either high or low. This pulse is received from the handler to start
limit testing. See Section 12 and Section 13.
NOTE NSTest, PSTest, and BSTest can be used only at the beginning of a
sweep and should not be used to trigger each point in a sweep.
Trigger layer
The Trigger Layer uses three event detectors; one for each action (Source, Delay,
and Measure).
Event detector bypass — As shown in Figure 11-3, there is a bypass
(TRIGger:DIRection) for the Source Event Detector. This bypass is in effect only if
TLINk is the selected Trigger-In Source. With this event detector bypass set to
SOURce, operation will proceed around the Source Event Detector.
The programmable trigger-in sources for the Trigger Layer are described as fol-
lows:
IMMediate — With Immediate selected, event detection for the three detectors is
satisfied immediately. Operation proceeds through the Trigger Layer to perform
the Source, Delay, and Measure actions.
TLINk — With TLINk selected, event detection at each enabled detector occurs
when an input trigger via the Trigger Link input line is received. A detector is
enabled by including its parameter name with the TRIGger:INPut command.
For example, to enable the Delay Event Detector and Measure Event Detector,
the following command must be sent:
TRIGger:INPut DELay, SENSe
The above command disables the Source Event Detector since its parameter
name (SOURce) is not included in the parameter list.
With the Source Event Detector disabled, operation will not hold up. It will con-
tinue and perform the Source Action. Operation will hold up at the Delay Event