User Manual

11-4 Triggering 2400 Series SourceMeter
®
User’s Manual
Arm layer
Event Detector Bypass — As shown in Figure 11-1, there is a bypass for the Arm
Event Detector. This bypass can only be used if TLINK or STEST is the selected
Arm-In Event. The bypass serves to “jump-start” operation. With the event detec-
tor bypass set to ONCE, operation will loop around the Arm Event Detector when
the output is turned ON.
The programmable arm-in events for the Arm Layer are described as follows:
IMMEDIATE — Event detection occurs immediately allowing operation to con-
tinue.
GPIB — Event detection occurs when a bus trigger (GET or *TRG) is received.
TIMER — With the Timer selected, event detection occurs immediately when the
output is turned ON. On repeated passes via “Another Arm ? Yes,” event detec-
tion occurs when the programmed timer interval expires. If operation takes the
“Another Arm ? No” route, the Timer resets allowing event detection to again
occur immediately.
MANUAL — Event detection occurs when the TRIG key is pressed.
TLINK — Event detection occurs when an input trigger via the Trigger Link input
line is received. See “Trigger link” later in this section for more information. With
TLink selected, you can loop around the Arm Event Detector by setting the event
detector bypass to ONCE.
↓STEST — 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.
↑ STEST — 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.
↑↓STEST — Event detection occurs when the start-of-test (SOT) line of the Digi-
tal I/O port is pulsed either high or low. This pulse is received from the handler to
start limit testing. See Section 12.
NOTE STEST can be used only at the beginning of a sweep and should not be
used to trigger each point in a sweep.