|RFmx Demod 19.1 Help|
|RFmx Demod 20.0 Help|
|Description:||Specifies the margin RFmx adds to the RFMXDEMOD_ATTR_REFERENCE_LEVEL attribute.
The margin avoids clipping and overflow warnings if the input signal exceeds the configured reference level.
RFmx configures the input gain to avoid clipping and associated overflow provided that the instantaneous power of the input signal remains within the Reference Level plus the Reference Level Headroom.
If you know the input power of the signal precisely or previously included the margin in the Reference Level, you could improve the signal-to-noise by reducing the Reference Level Headroom.
You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals.
PXIe-5668R: 6 dB
PXIe-5830/5831/5841: 1 dB
PXIe-5840: 0 dB
Supported devices: PXIe-5668R, PXIe-5830/5831/5840/5841
Get Function: RFmxDemod_GetReferenceLevelHeadroom
Set Function: RFmxDemod_SetReferenceLevelHeadroom