NIRFSA_ATTR_ATTENUATION

Specific Attribute

Data type	Access	High Level Functions
ViReal64	R/W	None

Description

Specifies the downconverter module attenuation setting in dB.

Calculate the attenuation setting using desired NIRFSA_ATTR_REFERENCE_LEVEL and NIRFSA_ATTR_MIXER_LEVEL settings, according to the following formula:

attenuation = reference level – mixer level

For example, when using a reference level of 0 dBm (default) with moderate distortion and low noise, specify an attenuation value of 20 dB, as shown by the following calculation:

attenuation = (0 dB reference level) – (–20 dB mixer level