Instruction manual

21
10 GB Communication
Version
1.0
3
& Control Card Instruction Manual
4.4.3 Stream start and stream stop conditions
The stream start condition depends on the trigger mode. Trigger
options can be set using the SETTRIGGER instruction. The streamer unit has
three different trigger modes:
 Non-triggered (Trigger sources are disabled, Trigger Control = 0x00)
 Triggered without delay (Trigger Control > 0, Trigger Delay = 0)
 Triggered with delay (Trigger Control > 0, Trigger Delay > 0)
In non-triggered mode the streamer starts sending data immediately after
the user set the Stream X enable/disable bit in the Stream Control register.
In triggered mode the streamer waits for a trigger event after the user set
the Stream X enable/disable bit in the Stream Control register. When a
trigger event occurs it starts sending data (Trigger Delay = 0) or waits for
Trigger Delay microseconds (except the user clears the Stream X
enable/disable bit in the Stream Control register). Trigger events can be
individually enabled or disabled with the SETTRIGGER instruction.
The stream stop condition depends on the Sample Count value. The
Sample Count can be programmed using the SETSAMPLECOUNT instruction.
The streamer unit has two different stream stop mode:
 Continuous: Sample Count = 0
 Counted: Sample Count > 0
In continuous mode the streamer stops sending data when the user clears
the Stream X enable/disable bit in the Stream Control register. In counted
mode the streamer counts the output samples and automatically stops
sending data when the internal sample counter reaches the value set in the
Sample Count.