my lab
in [Design]
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From: JosephKK on 16 Oct 2009 01:11 On Wed, 14 Oct 2009 05:18:59 -0400, JW <none(a)dev.null> wrote: >On Mon, 12 Oct 2009 15:10:57 -0700 Joerg <invalid(a)invalid.invalid> wrote >in Message id: <7jhnrlF351k31U1(a)mid.individual.net>: > >>JW wrote: >>> On Fri, 09 Oct 2009 17:09:54 -0700 Joerg <invalid(a)invalid.invalid> wrote >>> in Message id: <7ja1mpF2pe4k2U1(a)mid.individual.net>: >>> >>>> If you have to use equipment at clients a lot and its legacy HP stuff >>>> the USB version is very practical. Plug it in, hit print on the >>>> analyzer, done. But Abdul (the Prologix designer) and I had to iron out >>>> a bias problem before it liked HP legacy gear. >>> >>> I've been having problems communicating with HP 60XX power supplies >>> (6034 and 6038 come to mind) Do you have any details on the fix you might >>> share? >> >> >>What kind of problem? If you have an older Prologix do a firmware >>upgrade. The designer (Abdul) and I have found out that the logic >>threshold on the Prologix is way too high. After some discussion it >>turned out that pull-up resistors could be engaged inside the uC in the >>Prologix. Not a perfect solution but that made it work with the HP3577. >>So Abdul changed the firmware and made that available. > >I'm not exactly sure what the problem is, but any queries to the power >supply will return garbage. Using John Miles' Prologix.exe GPIB >configuration utility >http://www.thegleam.com/ke5fx/gpib/readme.htm#prologix >When I do a simple ID?, the 6034A supply floods the program with what >appears to be the <CR> character. The program will not accept any more >commands and the windows hourglass is seen when the mouse is hovered over >the Proligix.exe program. I have to shut off the power supply to get the >program back under control. I did do a firmware update about 6 months ago, >but I see there's been at least one update since then. I'll update the >firmware again and see what happens. This complaint sounds really weird to me. I suspect that there is a logic flaw in the Prologix software. I think i need to get dialed in with Abdul. Who else can he talk to that implemented GPIB on a micro before?
From: Jim Thompson on 16 Oct 2009 11:17 On Thu, 15 Oct 2009 21:05:46 -0700, "JosephKK"<quiettechblue(a)yahoo.com> wrote: >On Sun, 11 Oct 2009 09:05:12 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com> wrote: > >>On Sun, 11 Oct 2009 10:52:59 -0500, krw <krw(a)att.bizzzzzzzzzzz> wrote: >> >>>On Sun, 11 Oct 2009 02:33:18 -0400, "Michael A. Terrell" >>><mike.terrell(a)earthlink.net> wrote: >>> >>>> >>>>Jim Thompson wrote: >>>>> >>>>> On Fri, 09 Oct 2009 20:18:14 -0400, Phil Hobbs >>>>> <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >>>>> >>>>> >Joerg wrote: >>>>> >> Phil Hobbs wrote: >>>>> >>> Joerg wrote: >>>>> >>>> a7yvm109gf5d1(a)netzero.com wrote: >>>>> >>>>> Well I got a HP 5316A universal counter, with the 1GHz channel and the >>>>> >>>>> OCXO. >>>>> >>>>> Very nice, I think. Although I suppose I still have the problem of not >>>>> >>>>> knowing exactly the frequency of the OCXO is, after all there are >>>>> >>>>> coarse and fine adjustments on the can... >>>>> >>>> >>>>> >>>> >>>>> >>>> Well, there is WWV :-) >>>>> >>>> >>>>> >>>> >>>>> >>>>> Eh, still, I'm pretty happy with the cheap stuff you can get with a >>>>> >>>>> bit of patience. >>>>> >>>>> I think that I will build a 10V "standard" from my AD588s, in a nice >>>>> >>>>> box. >>>>> >>>>> >>>>> >>>>> So, what kind of connectivity do you guys have in yuor lab? Is >>>>> >>>>> everything GPIB, USB, or some mix? >>>>> >>>> >>>>> >>>> >>>>> >>>> A mix, and that's unavoidable. Older gear that is irreplaceable >>>>> >>>> (because they simply don't make some of the good stuff anymore) >>>>> >>>> inevitably comes with those dreaded HPIB garden hose connections. The >>>>> >>>> logic analyzer and some other gear I rarely use is from the RS232 >>>>> >>>> era. Modern gear like the DSO is USB. And I will absolutely not have >>>>> >>>> HPIB garden hoses here anymore. >>>>> >>>> >>>>> >>>> So, there is a Prologix HPIB/USB adaptor, an RS232/USB adaptor plus >>>>> >>>> the traditional USB spreader octopus. I raised the equipment rack by >>>>> >>>> 1-1/2" to make all that fit underneath, plus scope probes, chargers, >>>>> >>>> international outlets, a flat vise and whatever else is needed during >>>>> >>>> lab work. Nice thing is, a laptop can now talk to all the important >>>>> >>>> boxes. >>>>> >>>> >>>>> >>> >>>>> >>> I'm so used to GPIB that I'm probably not a good example. It's a >>>>> >>> great deal nicer than RS232, and given that it's been around so long, >>>>> >>> I don't have to worry much about OSes not supporting it in >>>>> >>> detail--unlike USB. >>>>> >>> >>>>> >> >>>>> >> GPIB is terrible. The topper happened a long time ago, after I had just >>>>> >> laid new carpet. Connector slipped off, the garden hose cable >>>>> >> ricocheted, hit my coffee mug which was half full ... *THWACK* ... flew >>>>> >> off and crashed onto new carpet. That was the end of GPIB for me. There >>>>> >> sure are better busses out there. I used to prefer RS232 but now >>>>> >> everything is USB. >>>>> >> >>>>> >> >>>>> >>> A nice Prologix GPIB-Ethernet is next on my list. >>>>> >>> >>>>> >> >>>>> >> If you have to use equipment at clients a lot and its legacy HP stuff >>>>> >> the USB version is very practical. Plug it in, hit print on the >>>>> >> analyzer, done. But Abdul (the Prologix designer) and I had to iron out >>>>> >> a bias problem before it liked HP legacy gear. >>>>> >> >>>>> > >>>>> >Spilling coffee is a criticism of a bus? GPIB can do about 1 MB/s when >>>>> >externally clocked, which is better than good enough for most things I >>>>> >need to do in the lab, and if I tighten the screws I can even keep my >>>>> >coffee and my carpet. ;) >>>>> > >>>>> >Cheers >>>>> > >>>>> >Phil Hobbs >>>>> >>>>> Joerg is accident prone... always *PHUT*ing ;-) >>>> >>>> >>>> He always has one *PHUT* in the grave... >>> >>> Very good! >> >>We need to have an SED get-together. If I hosted it, say in April, >>when AZ is absolutely delightful weather-wise, who would come? >> >> ...Jim Thompson > >I would be interested. Noted. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
From: Joerg on 16 Oct 2009 11:51 JosephKK wrote: > On Sun, 11 Oct 2009 14:09:40 -0700, Joerg <invalid(a)invalid.invalid> > wrote: > >> John Larkin wrote: >>> On Sat, 10 Oct 2009 14:40:18 -0700, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> John Larkin wrote: >>>>> On Sat, 10 Oct 2009 15:58:01 -0400, Phil Hobbs >>>>> <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >>>>> >>>>>> John Larkin wrote: >>>> [...] >>>> >>>>>>> Longterm, gigabit (and whatever comes next) Ethernet is the only >>>>>>> reasonable instrument bus. >>>>>>> >>>>>>> John >>>>>>> >>>>>> Sure, unless you need timing coherence between instruments. >>>>> The IEEE-1588 protocol can sync boxes to within nanoseconds over >>>>> ethernet >>>>> >>>>> http://en.wikipedia.org/wiki/Precision_Time_Protocol >>>>> >>>>> >>>>>> Also there's all this nice stuff around that's GPIB & RS232. >>>>> It's also nice when an instrument has a web-page interface, and can be >>>>> telnet-ed to, without any PC plugin boards or drivers. Or distance >>>>> limits. >>>>> >>>> Hey, then you could sit there at Zeitgeist all day long and run it all >>>> via a 3G phone :-) >>>> >>> I guess future instruments will be Twitter compatible. >>> >> Yeah, even IEEE fell for that. An engineer's organization, of all >> places. Pathetic. > > And since when are engineers not people with all their follies? Since HSC opened in the Bay Area :-) -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: John Larkin on 16 Oct 2009 12:29 On Thu, 15 Oct 2009 21:19:08 -0700, "JosephKK"<quiettechblue(a)yahoo.com> wrote: >On Sun, 11 Oct 2009 14:09:40 -0700, Joerg <invalid(a)invalid.invalid> >wrote: > >>John Larkin wrote: >>> On Sat, 10 Oct 2009 14:40:18 -0700, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> John Larkin wrote: >>>>> On Sat, 10 Oct 2009 15:58:01 -0400, Phil Hobbs >>>>> <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >>>>> >>>>>> John Larkin wrote: >>>> [...] >>>> >>>>>>> Longterm, gigabit (and whatever comes next) Ethernet is the only >>>>>>> reasonable instrument bus. >>>>>>> >>>>>>> John >>>>>>> >>>>>> Sure, unless you need timing coherence between instruments. >>>>> The IEEE-1588 protocol can sync boxes to within nanoseconds over >>>>> ethernet >>>>> >>>>> http://en.wikipedia.org/wiki/Precision_Time_Protocol >>>>> >>>>> >>>>>> Also there's all this nice stuff around that's GPIB & RS232. >>>>> It's also nice when an instrument has a web-page interface, and can be >>>>> telnet-ed to, without any PC plugin boards or drivers. Or distance >>>>> limits. >>>>> >>>> Hey, then you could sit there at Zeitgeist all day long and run it all >>>> via a 3G phone :-) >>>> >>> >>> I guess future instruments will be Twitter compatible. >>> >> >>Yeah, even IEEE fell for that. An engineer's organization, of all >>places. Pathetic. > >And since when are engineers not people with all their follies? Good engineers discipline their follies with reason, so that the things they design work. John
From: Michael A. Terrell on 17 Oct 2009 02:40
JosephKK wrote: > > Once upon a time i put a GPIB interface, a real time clock, and a FDC > on a SYM-1 (1 MHz 6502) and got it all working with ROM basic. It was > to automatically run a dielectrometer with the sample in a fixture in > a temperature chamber, with data logging. > I used the MC 68488, and a PIO with the TI line driver chips. Would > rather have used either the uPD7210 with the TI drivers or the > Fairchild 96488. Commodore used their MOS Technologies 6522 for IEEE-488 interfacing. Both the standard version, and their modified serial version. -- The movie 'Deliverance' isn't a documentary! |