Keithley SourceMeter 2400, User Manual

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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 detector 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 continue.
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 detection 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 Digital I/O
port is pulsed either high or low. This pulse is received from the handler to start limit test-
ing. 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.
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