LTF Duration (802.11n/ac/ax/be)

Menu Path: MeasSetup > IEEE 802.11n/ac/ax/be Demod Properties > Format tab

LTF Long Training field Duration is used in the 802.11ax/be standard to set the symbol duration by means of compression to optimize performance for the scenario. The HE (802.11ax) Physical Layer provides support for 3.2us (1x LTF), 6.4us (2x LTF), and 12.8us (4x LTF) LTF symbol durations. The EHT (802.11be) Physical Layer provides support for 6.4us (2x LTF), and 12.8us (4x LTF) LTF symbol durations.The LTF Duration group box is only visible when an 802.11ax/be standard format is selected.

• Automatic: When selected, the VSA software attempts to automatically set the LTF duration.

• From SIG Symbols: When selected, the LTF’s information is demodulated and decoded from the HE-SIG-A or EHT-SIG1.

• Manual

  • 1x: Sets the LTF symbol duration to 3.2 us (1/4 compressed).
  • 2x: Sets the LTF symbol duration to 6.4 us (1/2 compressed).
  • 4x (default): Sets the LTF symbol duration to 12.8 us (uncompressed).

See Also

Format Tab

802.11n/ac/ax/be Demod Properties