Specifies whether the noise calibration and measurement is performed manually by the user or automatically by RFmx.

Syntax

RFMXNR_ATTR_CHP_NOISE_CALIBRATION_MODE

Numeric Value

Data Type

Access

Applies To

9449510

Int32

Read/Write

N/A

Remarks


Refer to the measurement guidelines section in the Noise Compensation Algorithm topic for more information.

You do not need to use a selector string to configure or read this attribute for the default signal instance. Refer to the Selector String topic for information about the string syntax for named signals.

The default value is Auto.

Name

Value

Description

RFMXNR_VAL_CHP_NOISE_CALIBRATION_MODE_MANUAL

0 (0x0)

When you set RFMXNR_ATTR_CHP_MEASUREMENT_MODE attribute to Calibrate Noise Floor, you can initiate the instrument noise calibration for CHP manually. When you set the CHP Meas Mode attribute to Measure, you can initiate the CHP measurement manually.

RFMXNR_VAL_CHP_NOISE_CALIBRATION_MODE_AUTO

1 (0x1)

When you set the RFMXNR_ATTR_CHP_NOISE_COMPENSATION_ENABLED attribute to True, RFmx sets the RFMXINSTR_ATTR_INPUT_ISOLATION_ENABLED attribute to Enabled and calibrates the instrument noise in the current state of the instrument. Next, RFmx resets the Input Isolation Enabled attribute and performs the CHP measurement including compensation for the noise contribution of the instrument. RFmx skips noise calibration in this mode if valid noise calibration data is already cached. When you set the CHP Noise Comp Enabled to False, RFmx does not calibrate instrument noise and performs the CHP measurement without compensating for the noise contribution of the instrument.