ADLINK Technology MCM-216, Руководство пользователя

Страница: 52 / 69

44 Web Console
Gated Trigger
Gated-trigger acquisition is indicated in applications where data is
to be collected when trigger events are set to level high/low, and
acquisition suspended when trigger events are set to the opposite
level. The process repeats until the specified amount of data is
acquired.
Figure 3-25: Gated Trigger
Post-Trigger or Delay-Trigger Acquisition with Re-Trigger
Post-trigger or delay-trigger acquisition with re-trigger function is
indicated in applications where data is to be collected after several
trigger events. The number of scans after each trigger and the
re-trigger number are valid from 1 to the buffer size allocated in
kernel space. The process repeats until the specified amount of
re-trigger signals is detected.
Repeat Interval
is the interval between each data capture, in milli-
seconds. Each data query consists of data capture via FPGA plus
data filtering via MCU. The time required for data filtering may vary
according to the complexity of the filtering algorithm. If the time
required for handling data exceeds the repeat interval, the next
time query will be started immediately. It is recommended that this
value be set.
Time
Ɣ Operation start
Ɣ
Acquisition start
Trigger
Data N samples M samples
Ɣ Trigger event occurs
(high active)
Ɣ Trigger event occurs
(high active)
ƔƔƔƔ