Apparently some Agilent logic analyzers (such as the 1682A) will dump data in CSV (comma-separated value) files, rather than a separate file per signal as the old HP 16500B does. My la2vcd program, which converts the logic analyzer dumped data into VCD format for use with a waveform viewer, does not yet support CSV input, but I’ve started work to add it.
This seems slightly ironic, in that before I settled on VCD output, I actually was using a script that turned the one-file-per-signal output from the 16500B into a CSV file.