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...? ....?. 0000:0010 4123 e08d 1a0c 0fde-40d8 30c6 c484 3016 A#?....?(a)?0??.0. 0000:0020 6284 61a3 c68d 1920-1bda c038 03e2 c684 b.a??.. .??8.??. 0000:0030 75e6 c879 3107 8e9c-3763 d694 a133 e745 u??y1...7c?.?3?E 0000:0040 1937 765e 9849 c3a6-cc99 9775 e0cc 0130 .7v^.I???..u??.0 0000:0050 50a0 c084 0813 ce88-78e3 e149 a524 4f76 P??...?.x??I?$Ov 0000:0060 fc18 9223 4619 1a9f-c248 b9b2 e5cb 9833 ?..#F...?H????.3 0000:0070 6bde b443 d428 4183-490d 366c d8d4 a4d6 k??C?(A.I.6l???? INFO.WAD (file size 12043 bytes) 0000:0000 1f9d 9030 6e04 1c08-a320 8c18 060b ca40 ...0n...? ....?@ 0000:0010 18f0 8640 1a07 6f20-8418 4362 c283 170b .?. at ..o ..Cb?... 0000:0020 daa8 7163 8647 8836-6624 9401 31a3 8d18 ??qc.G.6f$..1?.. 0000:0030 366c 2081 82b2 068c-1a5f c690 f912 e30b 6l ..?..._?.?.?. 0000:0040 4417 65e4 c801 3022-c40b 3169 dcbc 5833 D.e??.0"?.1i??X3 0000:0050 078d 8211 0a8e 8250-0a62 65cb 9731 67c6 .......P.be?.1g? 0000:0060 8008 22e8 1c3a 61d8-b001 9153 ce1b 3920 .."?.:a??..S?.9 0000:0070 e68c 9193 060e 9da3-4947 a85d cbb6 ad5a ?......?IG?]???Z