Yahoo Groups archive
Thread
2005-05-31 by Greg Amann
How do you more experienced MOTMers test new modules and DIY stuff? Do you test them in situ or do you have a benchtop rig? Does the module go to the 'scope or does the 'scope go to the mountain? (Damn, forgot, no religious threads!) I have seena photo of a get together where Cynthia had a module mounted on extenders so that trim pots could be tweaked at the modular. Opinions? Thanks in advance, BFG
2005-05-31 by Mike Marsh
I test 'in situ'. My scope is right next to my rig, though truth (and I know truth is relative) be told is use it mostly for the pretty waveforms :> My most useful debugging tool is my VOM. I can usually spot an correct errors, but every once in a while something comes along that I cna't figure out. Embarrassingly, that included a chip I soldered into the 480 BACKWARDS and could n't figure out why the HP channel didn't work :/ Mike --- In motm@yahoogroups.com, "Greg Amann" <greg.amann@s...> wrote: > How do you more experienced MOTMers test new modules and DIY stuff? > > Do you test them in situ or do you have a benchtop rig? Does the > module go to the 'scope or does the 'scope go to the mountain? (Damn, > forgot, no religious threads!) > > I have seena photo of a get together where Cynthia had a module > mounted on extenders so that trim pots could be tweaked at the modular.
> > Opinions? > > Thanks in advance, BFG
2005-05-31 by Greg Amann
Testing "in situ" would remove the need for a bench power supply! Money that could be better used to send Paul's wife on that well deserved spa weekend (read: buy more modules!). PLL, BFG Mike Marsh wrote:
> I test 'in situ'. My scope is right next to my rig, though truth (and > I know truth is relative) be told is use it mostly for the pretty > waveforms :> > > My most useful debugging tool is my VOM. I can usually spot an > correct errors, but every once in a while something comes along that I > cna't figure out. Embarrassingly, that included a chip I soldered > into the 480 BACKWARDS and could n't figure out why the HP channel > didn't work :/ > > Mike > > --- In motm@yahoogroups.com, "Greg Amann" <greg.amann@s...> wrote: > > How do you more experienced MOTMers test new modules and DIY stuff? > > > > Do you test them in situ or do you have a benchtop rig? Does the > > module go to the 'scope or does the 'scope go to the mountain? (Damn, > > forgot, no religious threads!) > > > > I have seena photo of a get together where Cynthia had a module > > mounted on extenders so that trim pots could be tweaked at the > modular. > > > > Opinions? > > > > Thanks in advance, BFG > > > > ------------------------------------------------------------------------ > *Yahoo! Groups Links* > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/motm/ > > * To unsubscribe from this group, send an email to: > motm-unsubscribe@yahoogroups.com > <mailto:motm-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > >
2005-05-31 by Mike Marsh
Just so! --- In motm@yahoogroups.com, Greg Amann <greg.amann@s...> wrote: > Testing "in situ" would remove the need for a bench power supply! Money > that could be better used to send Paul's wife on that well deserved spa > weekend (read: buy more modules!). > > PLL, BFG > > > Mike Marsh wrote: > > > I test 'in situ'. My scope is right next to my rig, though truth (and > > I know truth is relative) be told is use it mostly for the pretty > > waveforms :> > > > > My most useful debugging tool is my VOM. I can usually spot an > > correct errors, but every once in a while something comes along that I > > cna't figure out. Embarrassingly, that included a chip I soldered > > into the 480 BACKWARDS and could n't figure out why the HP channel > > didn't work :/ > > > > Mike > > > > --- In motm@yahoogroups.com, "Greg Amann" <greg.amann@s...> wrote: > > > How do you more experienced MOTMers test new modules and DIY stuff? > > > > > > Do you test them in situ or do you have a benchtop rig? Does the > > > module go to the 'scope or does the 'scope go to the mountain? (Damn, > > > forgot, no religious threads!) > > > > > > I have seena photo of a get together where Cynthia had a module > > > mounted on extenders so that trim pots could be tweaked at the > > modular. > > > > > > Opinions? > > > > > > Thanks in advance, BFG > > > > > > > > ------------------------------------------------------------------------
> > *Yahoo! Groups Links* > > > > * To visit your group on the web, go to: > > http://groups.yahoo.com/group/motm/ > > > > * To unsubscribe from this group, send an email to: > > motm-unsubscribe@yahoogroups.com > > <mailto:motm-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > Service <http://docs.yahoo.com/info/terms/>. > > > >
2005-05-31 by Scott Juskiw
>How do you more experienced MOTMers test new modules and DIY stuff? I have a bench power supply and do my initial smoke tests there at the bench. My bench and synth are not near each other. I have some long cables that I run from other modules in my synth to the bench if I need to (for example) supply a sawtooth wave from an oscillator to the filter I'm testing. I calibrate most things at the bench with DVM and scope. Exceptions are the 1V/OCT tracking which I usually do, by ear, with the test module in situ. Sometimes I'll drag the scope out to the synth if I really need to get a look at a waveform, but that's quite rare.
2005-05-31 by Richard Brewster
I use a long power cable, so I can test in situ with the module exposed on the table in front of the synth where I can attach a scope probe if I want to. That way I can easily patch between modules in the cabinet and the one being tested. The scope lives next to the synth. -Richard Brewster Greg Amann wrote:
>How do you more experienced MOTMers test new modules and DIY stuff? > >Do you test them in situ or do you have a benchtop rig? Does the >module go to the 'scope or does the 'scope go to the mountain? (Damn, >forgot, no religious threads!) > >I have seena photo of a get together where Cynthia had a module >mounted on extenders so that trim pots could be tweaked at the modular. > >Opinions? > >Thanks in advance, BFG > > > > >
2005-06-01 by charlesosthelder
Hey Greg! When testing that new module in your rig, it would be wise to first check the power connector for shorts before plugging it into the supply and turning the power on. This will alert you to problems on the module pcb before you apply power and smoke something. If you have a Power One or similar supply (like the MOTM supply), it is *very* unlikely that you will damage the power supply. It has excellent short circuit protection, even with the limiter maxxed. I made a simple jack multiple with a pair of BNC connectors for connecting signals to the 'scope. This allows me to monitor signals in action with the rest of the system. Of course, as Mike pointed out, it's fun to watch! Chub - easily entertained --- In motm@yahoogroups.com, Greg Amann <greg.amann@s...> wrote: > Testing "in situ" would remove the need for a bench power supply! Money > that could be better used to send Paul's wife on that well deserved spa > weekend (read: buy more modules!). > > PLL, BFG > > > Mike Marsh wrote: > > > I test 'in situ'. My scope is right next to my rig, though truth (and > > I know truth is relative) be told is use it mostly for the pretty > > waveforms :> > > > > My most useful debugging tool is my VOM. I can usually spot an > > correct errors, but every once in a while something comes along that I > > cna't figure out. Embarrassingly, that included a chip I soldered > > into the 480 BACKWARDS and could n't figure out why the HP channel > > didn't work :/ > > > > Mike > > > > --- In motm@yahoogroups.com, "Greg Amann" <greg.amann@s...> wrote: > > > How do you more experienced MOTMers test new modules and DIY stuff? > > > > > > Do you test them in situ or do you have a benchtop rig? Does the > > > module go to the 'scope or does the 'scope go to the mountain? (Damn, > > > forgot, no religious threads!) > > > > > > I have seena photo of a get together where Cynthia had a module > > > mounted on extenders so that trim pots could be tweaked at the > > modular. > > > > > > Opinions? > > > > > > Thanks in advance, BFG > > > > > > > > ------------------------------------------------------------------ ------ > > *Yahoo! Groups Links* > > > > * To visit your group on the web, go to: > > http://groups.yahoo.com/group/motm/ > > > > * To unsubscribe from this group, send an email to: > > motm-unsubscribe@yahoogroups.com > > <mailto:motm-unsubscribe@yahoogroups.com? subject=Unsubscribe>
> > > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > Service <http://docs.yahoo.com/info/terms/>. > > > >
2005-06-02 by Greg Amann
Thanks for all of the good goodness of good ideas. My current plan will be to make a 4U module "tray" and a long power cord that will allow me to test the module "in situ" but completely exposed to my malicious scrutiny. A few interesting patch cords can be made to allow me to monitor whatever needs to be observed. PLL, BFG charlesosthelder wrote:
> Hey Greg! > > When testing that new module in your rig, it would be wise to first > check the power connector for shorts before plugging it into the > supply and turning the power on. This will alert you to problems on > the module pcb before you apply power and smoke something. If you > have a Power One or similar supply (like the MOTM supply), it is > *very* unlikely that you will damage the power supply. It has > excellent short circuit protection, even with the limiter maxxed. > > I made a simple jack multiple with a pair of BNC connectors for > connecting signals to the 'scope. This allows me to monitor signals > in action with the rest of the system. Of course, as Mike pointed > out, it's fun to watch! > > Chub - easily entertained > > --- In motm@yahoogroups.com, Greg Amann <greg.amann@s...> wrote: > > Testing "in situ" would remove the need for a bench power supply! > Money > > that could be better used to send Paul's wife on that well deserved > spa > > weekend (read: buy more modules!). > > > > PLL, BFG > > > > > > Mike Marsh wrote: > > > > > I test 'in situ'. My scope is right next to my rig, though truth > (and > > > I know truth is relative) be told is use it mostly for the pretty > > > waveforms :> > > > > > > My most useful debugging tool is my VOM. I can usually spot an > > > correct errors, but every once in a while something comes along > that I > > > cna't figure out. Embarrassingly, that included a chip I soldered > > > into the 480 BACKWARDS and could n't figure out why the HP channel > > > didn't work :/ > > > > > > Mike > > > > > > --- In motm@yahoogroups.com, "Greg Amann" <greg.amann@s...> wrote: > > > > How do you more experienced MOTMers test new modules and DIY > stuff? > > > > > > > > Do you test them in situ or do you have a benchtop rig? Does > the > > > > module go to the 'scope or does the 'scope go to the mountain? > (Damn, > > > > forgot, no religious threads!) > > > > > > > > I have seena photo of a get together where Cynthia had a module > > > > mounted on extenders so that trim pots could be tweaked at the > > > modular. > > > > > > > > Opinions? > > > > > > > > Thanks in advance, BFG > > > > > > > > > > > > ------------------------------------------------------------------ > ------ > > > *Yahoo! Groups Links* > > > > > > * To visit your group on the web, go to: > > > http://groups.yahoo.com/group/motm/ > > > > > > * To unsubscribe from this group, send an email to: > > > motm-unsubscribe@yahoogroups.com > > > <mailto:motm-unsubscribe@yahoogroups.com? > subject=Unsubscribe> > > > > > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > > Service <http://docs.yahoo.com/info/terms/>. > > > > > > > > > > > ------------------------------------------------------------------------ > *Yahoo! Groups Links* > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/motm/ > > * To unsubscribe from this group, send an email to: > motm-unsubscribe@yahoogroups.com > <mailto:motm-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > >