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<DIV><FONT face=Arial size=2>Scott:</FONT></DIV>
<DIV><FONT face=Arial size=2>Digital servos each have their own microprocessor
inside and each has it's own clock reference, i.e., each is a new source of low
level digital noise in your system, which is coupled directly back to the
receiver's decoder section via the servo leads. My first guess is that
there is something in your receiver electronics, probably in the decoder
section, that is sensitive to this noise. Noise sensitivity in the decoder
section won't show up as diminished range in alot of cases, you will see this
sort-of sympathetic behavior of other servos as the noise is unintentionally
integrated into the data pulses that each servo channel is being sent by the
decoder. Could be something else, but I would look to the receiver
first. If you can, swap out for a different brand or model of receiver and
see if the problem goes away.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ed</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=scott@rcfoamy.com href="mailto:scott@rcfoamy.com">Scott Anderson</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, July 04, 2006 6:47
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Analog
Servo RF Masking and....Thanks!</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial color=#0000ff size=4>Hi Scott,</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=4></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=4>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..
</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=4></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=4>Just my 2 cents from a fellow team
member..</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=4></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=4>Scott Anderson</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=f3aflyer7@gmail.com href="mailto:f3aflyer7@gmail.com">Scott
Pavlock</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, July 04, 2006 6:29
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Analog
Servo RF Masking and....Thanks!</DIV>
<DIV><BR></DIV>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.<BR><BR>John,<BR><BR>No I don't. I actually have no clue what that
is haha.<BR><BR>
<DIV><SPAN class=gmail_quote>On 7/4/06, <B class=gmail_sendername>John
Pavlick</B> <<A
href="mailto:jpavlick@idseng.com">jpavlick@idseng.com</A>> wrote:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<DIV>
<DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2>Do you have access to an
oscilloscope?</FONT></SPAN></DIV></DIV>
<DIV><SPAN class=q>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN>
<P><FONT size=2>John Pavlick<BR><A
onclick="return top.js.OpenExtLink(window,event,this)"
href="http://www.idseng.com"
target=_blank>http://www.idseng.com</A><BR> </FONT>
</P></SPAN></DIV></SPAN></DIV>
<DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(0,0,255) 2px solid">
<DIV dir=ltr align=left><FONT face=Tahoma size=2></FONT></DIV>
<DIV><SPAN class=q><FONT face=Tahoma size=2>-----Original
Message-----<BR><B>From:</B> <A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org"
target=_blank>nsrca-discussion-bounces@lists.nsrca.org</A> [mailto:<A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org"
target=_blank>nsrca-discussion-bounces@lists.nsrca.org</A>]<B>On Behalf
Of </B>Scott Pavlock<BR></FONT></SPAN></DIV>
<DIV><SPAN class=e id=q_10c3ba1780566141_4><FONT face=Tahoma
size=2><B>Sent:</B> Tuesday, July 04, 2006 5:40 PM<BR><B>To:</B> NSRCA
Mailing List<BR><B>Subject:</B> Re: [NSRCA-discussion] Analog Servo RF
Masking and....Thanks!<BR><BR></FONT></SPAN></DIV>
<DIV></DIV></BLOCKQUOTE></DIV>
<DIV><SPAN class=e id=q_10c3ba1780566141_6>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. <BR><BR>
<DIV><SPAN class=gmail_quote>On 7/4/06, <B class=gmail_sendername>John
Pavlick</B> <<A onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:jpavlick@idseng.com"
target=_blank>jpavlick@idseng.com</A>> wrote:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<DIV>
<DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2>Scott,</FONT></SPAN></DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff size=2> 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.</FONT></SPAN></DIV></DIV>
<DIV><SPAN>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN>
<P><FONT size=2>John Pavlick<BR><A
onclick="return top.js.OpenExtLink(window,event,this)"
href="http://www.idseng.com/"
target=_blank>http://www.idseng.com</A><BR> </FONT>
</P></SPAN></DIV></SPAN></DIV>
<DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(0,0,255) 2px solid"></BLOCKQUOTE></DIV>
<DIV><SPAN>
<DIV dir=ltr align=left><FONT face=Tahoma size=2>-----Original
Message-----<BR><B>From:</B> <A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org"
target=_blank>nsrca-discussion-bounces@lists.nsrca.org</A> [mailto:<A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target=_blank>
nsrca-discussion-bounces@lists.nsrca.org</A>]<B>On Behalf Of </B>Scott
Pavlock<BR><B>Sent:</B> Tuesday, July 04, 2006 3:58 PM<BR><B>To:</B>
NSRCA Discussion List<BR><B>Subject:</B> [NSRCA-discussion] Analog Servo
RF Masking and....Thanks!<BR><BR></FONT></DIV></SPAN></DIV>
<DIV><SPAN>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.<BR><BR>I'd like to ask if anyone knows if an analog servo would
mask glitches coming in?<BR>(2 - Futaba 3010's, 2 - Hitec HS77's, 1 -
HS81MG) <BR><BR>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. <BR><BR>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. <BR><BR>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. <BR><BR>Now, my
question again, are my analog servos just masking a problem, or is this
solely a problem in the digital servos?<BR><BR>Thanks a ton
everyone!<BR><BR>Scott<BR></SPAN></DIV>
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