Transmitting a Continuous Wave (CW) signal using ADALM Pluto with GNU Radio

I am currently working to transmit a Continuous Wave(CW) signal using ADALM Pluto with GNU Radio.  I want to transmit a simple CW signal out from the ADALM Pluto using the signal processing blocks in GNU Radio with only a single pure sine wave signal at the output of the ADALM Pluto transmitter.

As of now, the output of the ADALM Pluto transmitter I am getting is a complex signal(consists of a 0 degrees sine wave and a sine wave with 90 degrees out of phase) instead of a pure single sine wave at the Pluto transmitter's output. Is there a possible solution to transmit a CW signal of a single pure sine wave out from the ADALM Pluto using the signal processing blocks in GNU Radio?