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From: Jim Thompson on 28 Jul 2010 18:32 On Wed, 28 Jul 2010 14:54:18 -0700, "Joel Koltner" <zapwireDASHgroups(a)yahoo.com> wrote: >"Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in >message news:1251565ojjoauigst3fhr5dietj4g4o56g(a)4ax.com... >> Around SED, though, "specification" seems to be a dirty word :-( > >My experience in industry -- which only began in the mid-'90s, mind you -- is >that "specification" are more like a target to shoot for, but no one really >expects you're going to actually hit it. > >These days, "close" is good enough for horse shoes, hand grenades, and >engineering specs. :-) > >---Joel Chip customers won't generally go for "targets" unless they're agreed to up-front. On difficult chips I often have a specifications phase/milestone where all specs must be agreed to by both sides or either side can walk away. Changing to "target" to break a dead-lock sometimes happens ;-) ...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 | Spice is like a sports car... Performance only as good as the person behind the wheel.
From: Joerg on 28 Jul 2010 18:50 Joel Koltner wrote: > "Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote > in message news:tb71569tf82p9dt7ip2achlld7514kk0ek(a)4ax.com... >> You can plot actual and average power in Probe. > > Can you save plot setups? That's one thing that annoys me about LTspice > -- sure, it's easy to go and probe around and plot whatever you want, > but a month later when you have to re-visit the design, it'd sure be > nice if it had a command that could have remembered all the plots you > ended up with previously. > > Hmm... maybe it could be done in LTspice if the netlist lets you use > .plot commands or similar? -- It occurs to me that on a schematic a > "saved plot" is really just a regular old SPICE component that generates > a .plot line; they've just hooked it up to a nice GUI to adjust, e.g., > plot names or equations or whatever rather than making you know the full > syntax of the netlist file command. > Maybe -> Plot Settings -> Save Plot is what you are looking for. [...] > Unfortuntaely I think that SED likely has no more than, say, a hundred > "regulars" left anyway; in another 5-10 years I wouldn't be surprised if > most everyone here is looking for a web forum-based alternative > (...which is really too bad, because the Usenet model with the reader of > your choice on your PC and just transferring the raw text from the > servers is rather more efficient...). > Could be worse. In 10-20 years some of the regulars here might have transitioned into assisted living ... -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: krw on 28 Jul 2010 18:55 On Wed, 28 Jul 2010 12:34:04 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote: >On Wed, 28 Jul 2010 12:29:09 -0700, "Joel Koltner" ><zapwireDASHgroups(a)yahoo.com> wrote: > >>"Charlie E." <edmondson(a)ieee.org> wrote in message >>news:75j056d5rc75gb1dhff3kulq9rvj54eo8m(a)4ax.com... >>> No, it is because modern Orcad uses Allegro as the PCB side of things, >[snip] >> >>Do you get free maintenance upgrades to ORCAD for life as a former employee, >>Charlie? :-) > >I'm not sure that OrCAD upgrades are a desirable thing. When I >noticed them trying to neuter PSpice I stopped paying the annual >maintenance fee and held-up at v15.7 for the simulator and made my own >patches to PSpice Schematics. If they'd ever fix Crapture, an upgrade would be desirable. However they haven't tried, so we're at Crapture 15.7 also. The other hardware engineer will drag his feet there a lot longer for the same reason you are.
From: Joerg on 28 Jul 2010 18:56 Jim Thompson wrote: > On Wed, 28 Jul 2010 14:54:18 -0700, "Joel Koltner" > <zapwireDASHgroups(a)yahoo.com> wrote: > >> "Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in >> message news:1251565ojjoauigst3fhr5dietj4g4o56g(a)4ax.com... >>> Around SED, though, "specification" seems to be a dirty word :-( >> My experience in industry -- which only began in the mid-'90s, mind you -- is >> that "specification" are more like a target to shoot for, but no one really >> expects you're going to actually hit it. >> >> These days, "close" is good enough for horse shoes, hand grenades, and >> engineering specs. :-) >> >> ---Joel > > Chip customers won't generally go for "targets" unless they're agreed > to up-front. On difficult chips I often have a specifications > phase/milestone where all specs must be agreed to by both sides or > either side can walk away. Changing to "target" to break a dead-lock > sometimes happens ;-) > I am exactly in such a phase with a chip design spec right now. Trying to make sure everyone is on the same page. Can't say that it is fun :-( So, you really want to leave us all alone here? I remember a few years ago where you responded to a question of why you posted some OT remark "Well, I live here!" -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: krw on 28 Jul 2010 19:00
On Wed, 28 Jul 2010 14:54:18 -0700, "Joel Koltner" <zapwireDASHgroups(a)yahoo.com> wrote: >"Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in >message news:1251565ojjoauigst3fhr5dietj4g4o56g(a)4ax.com... >> Around SED, though, "specification" seems to be a dirty word :-( > >My experience in industry -- which only began in the mid-'90s, mind you -- is >that "specification" are more like a target to shoot for, but no one really >expects you're going to actually hit it. > >These days, "close" is good enough for horse shoes, hand grenades, and >engineering specs. :-) Specs? They won't even give us requirements. Specs are impossible when the requirements move at the product manager's whim. |