The SIS3820 multi purpose scaler in MCS (Multi Channel Scaler) and the SIS3302 digitizer in MCA (Multi Channel Analyzer) mode can be used for continous scans at Synchrotron Radiation beamlines.
The image (courtesy Dr. Karen Appel, Dr. Manuela Borchert and Dr. Martin Tolkiehn, DESY) shows a Charnokite Sr K-fluorescense scan acquired at the HASYLAB L beamline with a Vortex EX SDD detector.
Charnokite Fluorescense Image