Keithley 2700, User Manual, Page: 263 / 500

8-12 Triggering Model 2700 Multimeter/Switch System User’s Manual
1. Press EX TRIG to place the Model 2700 in the external trigger mode.
2. Press STEP on the Model 7002 to take it out of idle and start the scan. The
scanner’s output pulse triggers the Model 2700 to take a reading, store it, and send
a trigger pulse. The following explanation on operation is referenced to the
operation model shown in
Figure 8-8 .
Figure 8-8
Operation model for triggering example
A. Pressing EX TRIG on the Model 2700 places it at point A in the flowchart, where it
is waiting for an external trigger.
B. Pressing STEP on the Model 7002 takes it out of the idle state and places operation
at point B in the flow chart.
C. For the first pass through the model, the scanner does not wait at point B for a
trigger. Instead, it closes the first channel.
Wait for
Trigger Link
Trigger
Wait for
Trigger Link
Trigger
Scan
Channel
Output
Trigger
Scanned
400
Channels
?
Make
Measurement
Output
Trigger
Trigger
Bypass
Idle
No
Yes
Trigger
Model 7002
Press STEP to start scan
Model 2700
Press EX TRIG
A
B
C
D
E
F
2
1