square wave is the only output on scopy/ ADALM2000 waveform


One of ADALM2000 units that my student is using only outputs a square wave on the signal generator.  No matter if you specify on scopy (sine wave, triangle, saw tooth ...),  it only shows a square wave.  Any ideas of what might be going on?  I'll get more info , but wanted to see if anyone has had that experience.