Solution
The Bluetooth LE standard defines DTM for RF physical layer (PHY) testing of Bluetooth devices. DTM verifies the basic level of system performance using HCI or two-wire interfaces. NI RFmx Bluetooth toolkit supports DTM and provides the flexibility to automate using LabVIEW APIs along with wireless RF tests.
If NI RFmx Bluetooth is already installed, the DTM specific APIs can be found in the 'Measurement I/O>>RFmx>>Bluetooth>>niBluetoothDTM' palette.
The documentation for Bluetooth LE DTM mode can be found at: 'C:\Program Files <LabVIEW bitness>\National Instruments\RFmx\niBluetoothDTM\Documentation'
Similarly, the examples are available in the directory: 'C:\Program Files <LabVIEW bitness>\National Instruments\<LabVIEW Version>\examples\RFmx\niBluetoothDTM'