[:SENSe]:SEMask:MTYPe  <char>

(Read-Write) Set and query the type of SEM measured (TPWR | PSDR | SPKR). The Power Ref value can be fixed (which then also fixes the Relative Limit line), but then you must consider the unit being used (dBm or dBm/Hz) depending on the Meas Type selected. If Power Ref is left AUTO then its value will track the Meas Type and change units automatically. 

See also [:SENSe]:SEMask:MREFerence and [:SENSe]:SEMask:MREFerence:AUTO.

Relevant Modes

SA

Parameters

<character>

Choose from:

TPWR - Selects SEM type Total Power Reference. Where the total integrated reference channel power (dBm) is measured and used as the Auto Power Ref value.  Peaks found in Offset segments remain in (dBm) units for direct comparison with (dBm) limits.  

PSDR  - Selects SEM type PSD Ref. Where the power spectral density (dBm/Hz) is measured and used as the Auto Power Ref value. Absolute Limits and Peaks found in Offset segments are normalized to their equivalent PSD value (dBm/Hz).

SPKR  - Selects SEM type Spec Pk. Where the spectral peak value measured within the reference channel (dBm) is used as the Auto Power Ref value. Peaks found in Offset segments remain in (dBm) units for direct comparison with (dBm) limits.   

Examples

SEM:MTYP PSDR 'Sets the Auto power reference to be the measured spectral density (dBm/Hz).

SEM:MTYP SPKR 'Sets the Auto power reference to be the spectral peak measured value.

Query Syntax

SEM:MTYP?

Return Type

Character

Default

TPWR