This is the scope capture, the top trace is SDIN, middle trace is the SYNC, and bottom trace is SCLK. I sent 0x1400 to set the output to +5V on the first command. The second command was 0x1c00 to set output to -5V. In the default daisy chain mode, the output voltage stays at +5V. If I first send the command ox9000 to disable the daisy chain mode, the output switches from +5V to -5V as expected.
Thanks.