QPSK modulator COM-1002 ->  Dual D/A conversion (baseband) COM-2001

This test setup helps assessing the QPSK modulated signal and spectrum. 
The COM-1002 generates a QPSK-modulated PRBS-11 pseudo random data stream at 19.8 Mbit/s.
that is 9.9 Msymbols/s. The COM-2001 converts both In-phase (I) and Quadrature (Q) channels
from 10-bit precision digital to 1Vpp analog.

(a) Import the 1002_2001.stn settings into the assembly.

(b) using an oscilloscope, check the COM-2001 outputs. Each channel consists of a filtered 
digital signal. 
Verify that the amplitude is approximately 1V peak-to-peak.
Verify that the baseband signal does not contain any glitch or sudden transition.
Verify that the symbol rate is 9.9 MSymbols/s.

(c) using a spectrum analyzer, check the COM-2001 outputs.
The output is a QPSK modulated signal centered at zero frequency.