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ate TLink control source is selected. See TLink control source (Arm-In and Trigger-In) as fol-
lows for details.
Arm-In source — The Arm-In control sources are explained as follows:
•
Immediate (ARM:SOURce IMMediate) — Event detection for the arm layer is satis-
fied immediately allowing operation to continue on into the trigger layer.
•
GPIB (ARM:SOURce BUS) — Event detection for the arm layer is satisfied when a
bus trigger (GET or *TRG) is received by Model 6514.
•
Timer (ARM:SOURce TIMer) — Event detection for the arm layer is immediately sat-
isfied after the instrument leaves the idle state. Detection for each subsequent pass is sat-
isfied when the programmed timer interval elapses. The timer resets to its initial state
when the instrument goes back into idle.
•
Manual (ARM:SOURce MANual) — Event detection for the arm layer is satisfied by
pressing the TRIG key. Model 6514 must be in the local mode for it to respond to the
TRIG key. Press LOCAL or send LOCAL 14 over the bus to place Model 6514 in local.
TLink (ARM:SOURce TLINk) — Event detection for the arm layer is satisfied when
•
an input trigger via the TRIGGER LINK connector is received by Model 6514. Note that
if the source bypass is set to ONCE (ARM:DIRection SOURce), operation will initially
loop around the source detector after the instrument leaves the idle state. Detection for
each subsequent pass is satisfied by an input trigger. The bypass resets when the instru-
ment goes into idle.
/STest (ARM:SOURce NSTest) — Event detection for the arm layer is satisfied when a
•
negative going pulse (via the SOT line of the Digital I/O) is received from a component
handle (see "Limit Testing" in Section 10).
•
Test (ARM:SOURce PSTest) — Event detection for the arm layer is satisfied when a
positive going pulse (via the SOT line of the Digital I/O) is received from a component
handle (see "Limit Testing" in Section 10).
•
BSTest (ARM:SOURce BSTest) — Event detection for the arm layer is satisfied when
either a positive-going or a negative-going pulse (via the SOT line of the Digital I/O) is
received from a component handler (see "Limit Testing" in Section 10).
Trigger-In source — The Trigger-In control sources are explained as follow:
Immediate (TRIGger:SOURce IMMediate) — Event detection for the trigger layer is
•
satisfied immediately allowing operation to continue on to perform a measurement.
•
TLink (TRIGger:SOURce TLINk) — Event detection for the trigger layer is satisfied
when an input trigger via the TRIGGER LINK connector is received by Model 6514.
Note that if the source bypass is set to ONCE (TRIGger:DIRection SOURce), operation
will loop around the source detector on the initial pass through the arm layer. Detection
for each subsequent pass is satisfied by an input trigger. The bypass resets when
Model 6514 leaves the trigger layer.
Trigger delay
A programmable delay is available after event detection. It can be set manually (0 to 999.9998
seconds) or an auto delay can be used. With auto delay selected, the Model 6514 automatically
sets delay according to function and range. The auto delay settings are listed in Table 9-1.
Triggering
9-5
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