[spd,qual] = PR655measspd(S,[syncMode])
Make a measurement of the spectrum.
01/16/09 tbc Adapted from PR650Toolbox for use with PR655
10/26/10 dhb Handle sync failure a little better.
3/8/11 dhb Pass syncMode option to speed things up for displays where it doesn't work.
Psychtoolbox/PsychHardware/PR655Toolbox/PR655measspd.m