You can trigger your RF signal generator with the following trigger sources:

  • None
  • Digital Edge
  • Digital Level
  • Software Edge
Note Individual triggers may not support all trigger sources listed here.

None

Signal generation starts immediately upon execution of the DSTG Initiate function; no Start or Script trigger is necessary to begin generation.

This configuration is the default behavior for instruments programmed with DSTG.

Digital Edge

A channel performs an operation when the signal transitions from high to low or from low to high.

A digital signal has two discrete levels: a high level and a low level. When the signal transitions from high to low or from low to high, a digital edge is created. There are two types of edges:

  • Rising—Occurs when the signal transitions from low level to high level
  • Falling—Occurs with a transition from high level to low level

    • Triggers configured to act on a rising or falling edge of a digital signal are called edge triggers. Digital triggering is possible on the RTSI lines, PFI lines, and the PXI Star Trigger line.

    As the figure shows, an edge trigger can be configured to occur either at the place labeled Falling Edge of Signal or Rising Edge of Signal.



    You can configure each named trigger to operate based on a digital edge.

    Digital Level

    A channel performs an operation when a signal goes below a defined low level or above a defined high level.

    Triggers configured to act in this way are known as level triggers.

    Only Script triggers may be configured to trigger based on a digital level.

    Software Edge

    After initiation, a software trigger is generated internally by a programmatic call using DSTG and can occur at any time, based upon the conditions specified in the program.

    You can configure Start and Script Triggers in DSTG to operate based on a software edge.

    Use DSTG Send Software Edge Trigger and set the trigger type input to the type of trigger you want to send.