Keithley 708B Reference Manual page 131

Section 3: Functions and features
You cannot use an external trigger event (for example, digital I/O) for the channel stimulus setting of
the trigger model when using the front-panel STEP key.
Start scan
Front panel: SCAN > BACKGROUND
ICL:
Web interface: Execute Background
Scan start trigger
ICL:
If front panel, starts immediately
Bypass on
Scan count = 1, step count = 1
Channel action trigger
scan.trigger.channel.stimulus
3-2
Figure 58: Models 707B and 708B triggering overview
or
scan.execute() scan.background()
scan.trigger.arm.stimulus
Step
Scan
Models 707B and 708B Switching Matrix Reference Manual
NOTE
Scan Ready Event
scan.trigger.EVENT_SCAN_READY
Wait for scan start
trigger
Scan Start Event
scan.trigger.EVENT_SCAN_START
Wait for channel
action trigger
Channel action
Channel Ready Event
scan.trigger.EVENT_CHANNEL_READY
No
Step count
complete?
Scan Complete Event
Yes
scan.trigger.EVENT_SCAN_COMP
No
Scan count
complete?
Idle Event
Yes
scan.trigger.EVENT_IDLE
Idle
707B-901-01 Rev. A / August 2010