[NSRCA-discussion] Analog Servo RF Masking and....Thanks!

Tue Jul 4 15:36:21 AKDT 2006

Scott

 I don't know if Tony put it on a shaker table or not but he did put six
hours in the system. And he really went out of his way to get it to us
asap.With the 4th holiday I've not been able to contact him, maybe tommorow.
While range checking the digis if I put my hand on the antenna the glitch
increased but with the analog there was no glitch at all. My father and I
have been working this problem for over a month we have replaced everything
or sent it in to be checked.Right now no glitches with analogs but again
will the glitch present itself as noticably with analogs as apose to the
digis.We have no glitch right now but still no confidence in the system.

Scott

On 7/4/06, Scott Anderson <scott at rcfoamy.com> wrote:
>
>  Hi Scott,
>
> Stupid question, did you send RX out and have it put on a shaker table and
> checked.. I had a RX issue for over a month and spent time with Tony S. and
> he found a bad filter on the board..
>
> Just my 2 cents from a fellow team member..
>
> Scott Anderson
>
> ----- Original Message -----
> *From:* Scott Pavlock <f3aflyer7 at gmail.com>
> *To:* NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
> *Sent:* Tuesday, July 04, 2006 6:29 PM
> *Subject:* Re: [NSRCA-discussion] Analog Servo RF Masking and....Thanks!
>
> I've used multiple battery set ups including ones without a regulator on a
> normal NiCd pack, and also on both a 5.6v regulator and a 6v regulator.
>
> John,
>
> No I don't. I actually have no clue what that is haha.
>
> On 7/4/06, John Pavlick <jpavlick at idseng.com> wrote:
> >
> >  Do you have access to an oscilloscope?
> >
> >
> > John Pavlick
> > http://www.idseng.com
> >
> >
> >  -----Original Message-----
> > *From:* nsrca-discussion-bounces at lists.nsrca.org [mailto:
> > nsrca-discussion-bounces at lists.nsrca.org]*On Behalf Of *Scott Pavlock
> > *Sent:* Tuesday, July 04, 2006 5:40 PM
> > *To:* NSRCA Mailing List
> > *Subject:* Re: [NSRCA-discussion] Analog Servo RF Masking and....Thanks!
> >
> >  I've literally tried EVERYTHING possible to isolate the problem. The
> > only problem I can find is solely in the servos. The battery is bran new
> > (duralite 2s2p), bran new heavy duty MPI switch. I can reproduce the problem
> > with the digis with many different switch/battery/regulator set ups. I know
> > current draw isn't a problem as I've flown this set up for 2 years with no
> > faults.
> >
> > On 7/4/06, John Pavlick <jpavlick at idseng.com> wrote:
> > >
> > >  Scott,
> > >  Well I'm sure you've been through a lot already, but what you need to
> > > do is try to isolate the problem if possible. Start with a working setup
> > > (the analog servos). Next, add 1 digital servo. If it still works, remove
> > > that servo and try another. Only change ONE thing at a time. If it works
> > > with 1 digital servo ALL THE TIME, then add a second one. If you start to
> > > see problems as you add more digital servos (i.e gets worse with 3 or
> > > 4 digital servos but seems to work OK with 1 or 2), look at your battery and
> > > switch. What are you using for a battery and switch by the way? If your
> > > radio checks out OK (RF-wise) it's more likely that there is a problem with
> > > power. I bet you didn't have Rx the batteries checked did you? As you know,
> > > analog servos don't draw nearly as much current as digital servos. That
> > > could be the problem. If you have any way to look at the voltage when all of
> > > this is happening it could reveal some things. One way to do this is to put
> > > a servo lead in an unused channel on the Rx, connect it to a voltmeter, turn
> > > everything on and move the sticks. Don't use an Expanded-scale volt meter,
> > > just a plain old DVM (or better yet an analog volt meter) will do. See what
> > > that tells you.
> > >
> > >
> > > John Pavlick
> > > http://www.idseng.com
> > >
> > >
> > >  -----Original Message-----
> > > *From:* nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org
> > > ]*On Behalf Of *Scott Pavlock
> > > *Sent:* Tuesday, July 04, 2006 3:58 PM
> > > *To:* NSRCA Discussion List
> > > *Subject:* [NSRCA-discussion] Analog Servo RF Masking and....Thanks!
> > >
> > > First I would like to thank everyone for the great advice on these
> > > last few posts I've posted. Everyone has been a big help.
> > >
> > > I'd like to ask if anyone knows if an analog servo would mask glitches
> > > coming in?
> > > (2 - Futaba 3010's, 2 - Hitec HS77's, 1 - HS81MG)
> > >
> > > When I connect my JR digital servos ( 2 - 9411sa's, 1 - 8411sa, 1 -
> > > 8417, 1 - 3421sa) I get a pretty significant, constant glitch, as if the
> > > servos are constantly trying to center, but they have no load what so ever.
> > > This is the problem I have described in previous posts.
> > >
> > > When I connect analog servos in an identical set up, there is no
> > > "noise" at all. I range tested them at 100 feet with 1 antenna section up
> > > and there is no loss in speed and no sluggish behavior. I also range tested
> > > this at about 300 feet with the antenna completely down just for kicks, and
> > > I get the same results.
> > >
> > > When I range test the digital servos, even at the 100 foot range with
> > > the antenna completely extended there is a significant, constant glitch. The
> > > servos, receiver, and transmitter have all just gotten back from being
> > > checked and the 9411sa's had new pots put in, the receiver had been re-tuned
> > > to the frequency, and the transmitter got a new antenna. I am very surprised
> > > with these results as I just spent a fair amount of money to have my
> > > electronics looked at and deemed well.
> > >
> > > Now, my question again, are my analog servos just masking a problem,
> > > or is this solely a problem in the digital servos?
> > >
> > > Thanks a ton everyone!
> > >
> > > Scott
> > >
> > > _______________________________________________
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> > > NSRCA-discussion at lists.nsrca.org
> > > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
> > >
> > >
> >
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> >
> >
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