HP-UX .WAD file format?

Anyone here know anything about the .WAD file format in the context of HP-UX 9.0x, or more specifically in the context of an HP 16505A which is logic analyzer application running on top of HP-UX 9.0x on an HP 712/60? I have a set of MS-DOS FAT12 floppy disk images which each contain an UPDATE.WAD and an INFO.WAD file pair. I believe these must be compressed file archives. From looking at hex dumps of the files there are no obvious plain text strings. I would like to be able to view the archive contents and extract whatever files they might contain. Sample hex dumps below. These sample file pairs start with a common 15-byte file header: UPDATE.WAD (file size 320-bytes) 0000:0000 1f9d 9030 6e04 1c08-a320 8c18 060b ca80 ...0n...? ....?.