Section 4; Triggering; Overview - VTI Instruments EX1000A User Manual

VTI Instruments Corp.

TRIGGERING

O
VERVIEW
The EX10xxA supports a full function trigger model with a separate arm source and trigger source
event structure. The trigger model is based on the industry standard SCPI 1999 Trigger Subsystem
and is diagramed in Figure 4-2.
70
IDLE
LAYER
Init
INIT
LAYER
Wait for
Software Arm
ARM Event
ARM Event
ARM
ARM Delay
LAYER
ARM:COUNT:INF?
Yes
Wait for
Software Trigger
TRIG Event
TRIG Event
TRIG
TRIG Delay
LAYER
TRIG:COUNT:INF?
Yes
DEVICE
LAYER
F 4-2: EX10
IGURE
S
ECTION
IDLE
Yes Init
Continuous?
ARM:Count > 0
Yes
or
ARM:Count:Inf?
No Decrement
ARM:COUNT
TRIG:Count > 0
Yes
or
TRIG:Count:Inf?
No Decrement
TRIG:COUNT
RUN SCAN LIST
A T M
XX RIGGER ODEL
4
No
No
No
EX10xxA Triggering