ADLINK USB-1210 - Manual (Page 38)

28 Operation & Calibration
Post-Trigger Acquisition Mode (no retriggering)
Post-trigger acquisition is indicated when data is to be collected
after the trigger event, as shown..
Figure 3-8: Post Trigger without Retriggering
Delayed-Trigger Acquisition Mode (no retriggering)
Delay-trigger acquisition is indicated when the data collection is to
be delayed following the trigger event, as shown. Delay duration is
specified by a 32-bit counter value, whereby maximum delay is the
period of TIMEBASE X (2
32
- 1), and minimum delay the period of
the timebase.
Figure 3-9: Delayed Trigger
Middle Trigger Mode
Middle-trigger acquisition mode is indicated when data is to be col-
lected before and after the trigger event. The amount of stored
data before and after trigger event can be set individually (M and
N samples), as shown.
Time
ƔOperation
initiates
Trigger
N samples Data
ƔTrigger event occurs
ƔAcquisition begins ƔAcquisition stops
ƔData transfer to system commences
Time
ƔOperation initiates
Trigger
Data
ƔTrigger event occurs
ƔAcquisition stops
ƔData transfer to system begins
N samples
ƔAcquisition begins
Delay Time