Specifies whether the RF preamplifier is enabled in the system.

Syntax

RFMXINSTR_ATTR_PREAMP_ENABLED

Numeric Value

Data Type

Access

Applies To

14

int32

Read/Write

N/A

Remarks


PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841/5842/5860: If you set this attribute to Automatic, RFmx selects the preamplifier state based on the value of the Reference Level attribute and the center frequency. For PXIe-5830/5831/5832, the value is not coerced.

You do not need to use a selector string if you want to configure this attribute for all signal instances. Specify the signal name in the selector string if you want to configure or read that signal instance. Refer to the Selector String topic for information about the string syntax.

The default value for PXIe-5644/5645/5646 and PXIe-5830/5831/5832/5840/5841/5842 is Automatic, else the default value is Disabled.

Name

Value

Description

RFMXINSTR_VAL_PREAMP_DISABLED

0 (0x0)

Disables the RF preamplifier. Supported Devices: PXIe-5663/5663E/5665/5668

RFMXINSTR_VAL_PREAMP_ENABLED

1 (0x1)

Enables the RF preamplifier when it is in the signal path and disables it when it is not in the signal path. Only devices with an RF preamplifier on the downconverter and an RF preselector support this option. Use the RFMXINSTR_ATTR_RF_PREAMP_PRESENT attribute to determine whether the downconverter has a preamplifier.Supported Devices: PXIe-5663/5663E/5665/5668

RFMXINSTR_VAL_PREAMP_AUTOMATIC

3 (0x3)

Automatically enables the RF preamplifier based on the value of the reference level.Supported Devices: PXIe-5644/5645/5646, PXIe-5830/5831/5832/5840/5841/5842/5860