Specifies whether the niRFSG Write Arb Waveform VI immediately writes waveforms to the device or copies the waveform to host memory for later download. NI-RFSG reads and validates this property when an arbitrary waveform is first allocated.

For the PXI-5670, direct download is always disabled. For all other devices, direct download is always enabled.

PXI-5671: To increase performance when using large waveforms, enable direct download. To maximize reconfigurability, disable direct download.

Perform the following steps to enable direct download:

  1. Set the I/Q rate to less than or equal to 8.33 MS/s with the IQ Rate property.
  2. Set the Power Level Type property to Peak Power.
  3. Disable the IQ Swap Enabled property.
  4. Disable the Digital Equalization Enabled property.

Supported Devices: PXIe-5644/5645/5646, PXI-5670/5671, PXIe-5672/5673/5673E, PXIe-5820/5830/5831/5832/5840/5841/5842/5860

Remarks

The following table lists the characteristics of this property.

Short Name Direct Download
Data type ci32.png
Permissions Read/Write
High-level VIs N/A
Channel-based No
Resettable Yes
Disable 0

Disables direct download.
Enable 1

Enables direct download.