Triggering 10-9
Output trigger specifications
The SourceMeter can be programmed to output a trigger after various trigger model actions.
See Trigger model. The output trigger provides a TTL-compatible output pulse that can be used
to trigger other instruments. The specifications for this trigger pulse are shown in Figure 10-4.
A trigger link line can source 1mA and sink up to 50mA.
External triggering example
In a simple test system, you may want to close a switching channel and then measure the
resistance of the DUT connected to that channel. This test system is shown in Figure 10-5,
which uses a SourceMeter to measure 10 DUTs switched by a Model 7011 multiplexer card in
a Model 7001/7002 Switch System.
TTL High
(3.4V Typical)
Meter Complete
TTL Low
(0.25V Typical)
10µs
Minimum
gure
-
Trigger link output pulse
specifications
Triax
Cable
HI
LO
KEITHLEY
6430
REMOTE
PreAmp
SENSE
MAINFRAME
Connect to REMOTE
PreAmp connector on rear
panel of mainframe
1
DUT
#1
2
DUT
#2
10
DUT
#10
OUTPUT
Card 1
7011 MUX Card
Remote
PreAmp
Preamp
Cable
IN/OUT
HIGH
gure
-
UT test system