Disable Data Tone Modulation Autodetect (use burst definitions) (802.16 OFDMA)

Default: Cleared (See OFDMA Standard Presets Table.)

Disable Data Tone Modulation Autodetect disables the automatic detection of the subcarrier modulation format. The VSA provides two data tone modulation modes, an auto-detect mode and a manual mode . These two modes operate differently depending on the selected measurement analysis mode:, Data Burst analysis mode or Uniform Zone analysis mode

is only available when is selected on the tab.

Data Burst Analysis mode

To set the VSA to Enable Burst Analysis mode, select the Enable Burst Analysis checkbox. In the Data Burst Analysis mode, the Disable Data Tone Modulation Autodetect checkbox does the following:

Cleared (auto-detection mode): The subcarrier modulation format for each symbol in the data burst is automatically-detected. The data tone modulation formats specified in the zone definition are disregarded and not used.
Selected (see burst definition) (manual mode): The VSA uses the data tone subcarrier modulation format specified for each burst in the zone definition.

For Downlink subframe analysis with Auto-detect Definition Source mode selected, the modulation format used for a data burst depends on the DIUC index specified in the DLMAP and the DIUC burst profile mapping specified for that DIUC index on the Burst Profiles tab.

Uniform Zone Analysis mode

To set the VSA in Uniform Zone Analysis mode, clear the Enable Burst Analysis checkbox. In the Uniform Zone Analysis mode, the Disable Data Tone Modulation Autodetect checkbox does the following:

Cleared (auto-detection mode): The data tone subcarrier modulation format for each symbol in the zone is automatically-detected.
Selected (manual mode): The data tone modulation format for all data subcarriers in the zone is specified by selecting a modulation format in the manual drop down list. The selections are 16-QAM Quadrature Amplitude Modulation, 64-QAM or QPSK Quadrature phase shift keying (16-QAM is default).