HP8175A Digital Signal Generator v2.2 FW & Manuals / Datasheets - Page 1
Forum section: electronics / testgear

author: garrettm
author_rank: Frequent Contributor
timestamp: December 12, 2023, 02:01:33 am
content: A forum member asked me to upload a dump of my HP 8175A FW and I figured I would upload that along with .pdf copies of the manuals and other product literature I've collected for anyone that is interested.-- Attached Files --Firmware:HP 8175A Digital Signal Generator v2.2 FWUV EPROM: AM27C256 x6PDFs:1989 Datasheet from HP Catalog1992 Datasheet from HP CatalogPage 3 of Sep/Oct 1985 issue of Measurement Computation News-- Files Too Large to Attach --HPJ Apr 1987 Article (pgs 4-20)HP 8175A (Opt 001) Operating and Programming ManualHP 8175A (Opt 001) Service ManualHP 8175A (Opt 002) Operating & Programming ManualHP AN341-1 - HP 8175A / HP 1630G Stimulus-Response SystemHP AN341-2 - Simulating Sensor Signalshttps://www.mediafire.com/file/9t0gwc0unbbizn4/HP_8175A_HPJ_Apr_1987_Article_%2528pgs_4-20%2529.pdf/filehttps://www.mediafire.com/file/6oe78ntawszrnmk/HP_8175A_%2528Opt_001%2529_Operating_and_Programming_Manual.pdf/filehttps://www.mediafire.com/file/juu7yxhq6mz1oal/HP_8175A_%2528Opt_001%2529_Service_Manual.pdf/filehttps://www.mediafire.com/file/mcpt3jlletrg46v/HP_8175A_%2528Opt_002%2529_Operating_%2526_Programming_Manual.pdf/filehttps://www.mediafire.com/file/qh1ordpfsakvmht/HP_AN341-1.pdf/filehttps://www.mediafire.com/file/ykiy1mnmpeswash/HP_AN341-2.pdf/file

author: garrettm
author_rank: Frequent Contributor
timestamp: December 12, 2023, 02:18:24 am
content: For those thinking of picking one of these up, do note that there are two HW issues you will likely need to fix:1) The NiCd back-up battery (2.4V, 110mAH, 2/3 AA) will be dead and possibly have leaked electrolyte onto the processor board. Two 1/3 AA or AAA NiMH batteries (connected in series) or a 5.5V 0.1 to 1 farad super capacitor can be used as a replacement. The super cap is likely to have less issue with leaking corrosive gasses/fluid in the event of a failure.2) The power supply will need a replacement Y2 rated 22nF film capacitor (15.5mm pitch, 7mm max thickness). I would avoid using a RIFA/Kemet replacement part, seeing as how they still fail from cracking. Clearly, they don't care to fix the long standing issue with the faulty conformal coating.

author: garrettm
author_rank: Frequent Contributor
timestamp: December 12, 2023, 02:24:36 am
content: Finally, the HP 8175A was intended to work with the HP 163x logic analyzers as a "stimulus response system" (see HP AN 341-1). My unit came with inverse assembler files for the 163x logic analyzers. I have archived the files I recovered off the floppy disks here:https://www.eevblog.com/forum/testgear/searching-for-a-hp-1630-hp-1631-inverse-assembler-files/msg4039384/#msg4039384

author: wn1fju
author_rank: Frequent Contributor
timestamp: December 12, 2023, 02:05:38 pm
content: Thanks for the reminder about the batteries. I haven't used my 8175A in years and when I opened it up to take a look, I found that I had already removed the battery on the uP board and ran two wires to a plastic battery holder that I mounted near the fans (I don't remember doing this). When I opened up the battery cover, the two AAA NiMH batteries that I installed years ago had leaked. But at least nothing in the 8175A got destroyed.What I really should do one day is get a bunch of little red stickers and put one on the front panel of each of my test equipment pieces that have any kind of batteries inside. I simply can't keep track of which pieces do have them and when I ultimately come across one, the batteries are usually toast, including the ones that were used to replace the original.