What does the WinSDR log file reveal?=C2=A0 I=C2=A0have found that=C2=A0Win=
SDR is usually pretty "verbose" in its logging statements, and especially w=
hen it starts complaining.=C2=A0 For me, the "green trace" is a result of h=
aving no A/D board connected to the=C2=A0system, or having WinSDR set to th=
e wrong computer I/O port.
=C2=A0
Steve
=C2=A0

--- On Mon, 9/12/11, Robert Thomasson  wrote:


From: Robert Thomasson 
Subject: Re: WinSDR Wireless Interference?
To: psnlist@..............
Date: Monday, September 12, 2011, 6:20 PM


Jerry,

Thanks for your reply.=C2=A0 No, there is not a totally blank screen.=C2=A0=
 The WinSDR screen stays there but there are no seismometer wiggles (hope w=
e're not losing our layman audience here)=C2=A0 on it.=C2=A0 There are no l=
ines at all, no straight lines and no seismo wiggly lines.=C2=A0 I have to =
reboot WinXP to get it up and running again and when it comes back, there a=
re the straight green lines for the time period that WinSDR was having it's=
 problem.=C2=A0=C2=A0 But again, when the problem happens there are no line=
s at all, just the blank WinSDR system window as if I'd opened the program =
without a seismometer connected.

I have checked the cable connections and all other connections literally do=
zens of times and I also don't get the same symptoms of a blank WinSDR scre=
en when I disconnect a cable.

When WinSDR goes into its problem mode, I can't just close it and re-open i=
t to get it running again.=C2=A0 It will open but not connect to the seismo=
..=C2=A0 I have to reboot WinXP to get WinSDR running again.=C2=A0=20

I agree that it seems unlikely that it's a frequency/antenna problem but I'=
ve convinced myself that it only happens when the router or wireless comput=
er starts transmitting data.

Thanks,

Bob



Now that I've gone public with this problem, I can rest assured that the so=
lution will be something embarrassingly simple.

Bob


On Mon, Sep 12, 2011 at 3:40 PM,  wrote:





By =E2=80=9Cloosing trace=E2=80=9D, do you mean totally blank screen or a l=
ine drawn without the seismometer wiggles?
=C2=A0
I ask because I had a connection problem arise between my sensor and Larry=
=E2=80=99s A/D box.=C2=A0 For convenience, I had added right-angle adapters=
 at the box connectors.=C2=A0 One adapter frequently lost the connection fr=
om the sensor and all that was displayed on the computer was a straight gre=
en line.=C2=A0 I removed the adapter and it worked fine.=20
=C2=A0
I too am using an old Dell running XP, but do have it connected to the LAN.=
=C2=A0 I know that this probably does not answer your problem, but I doubt =
seriously that it is frequency / antenna problem.
=C2=A0
Regards,
Jerry Payton




=C2=A0

From: Robert Thomasson=20
Sent: Monday, September 12, 2011 5:01 PM
To: psnlist@.................
Subject: WinSDR Wireless Interference?
=C2=A0

=C2=A0



I have had some trouble keeping my WinSDR up and running.=C2=A0 It frequent=
ly shows just a blank screen, with all helicord traces gone.=C2=A0 Just as =
if I'd just opened the software without a seismometer connected to the comp=
uter.=C2=A0 The computer is an older Dell with a 2 GHz processor and 512 Mb=
 RAM, running WinXP with I think service pack 3.

What is interesting about this phenomenon is that there is a wireless route=
r in the house (the seismo server has no wireless capability and is not con=
nected to the network) and WinSDR will work fine until someone sits down at=
 another computer and the wireless network starts exchanging traffic.=C2=A0=
 Then the WinSDR screen loses the displayed data and goes blank.

Is it possible that somehow the USB cable from the seismometer to the seism=
o server computer=C2=A0 is acting as an antenna and picking up enough inter=
ference from the 2++GHz wireless LAN system to crash WinSDR?=C2=A0 WinSDR d=
oes not actually crash, it just loses the data traces, which disappear.=C2=
=A0 My next step is to dig out some old books and see if I can figure out w=
hat length the seismo cable would have to be to resonate at the wireless LA=
N frequency.=C2=A0=C2=A0 But I think it would have to be very short?

This is another unexpected educational aspect of this hobby!=C2=A0=C2=A0 Ju=
st wondering if anyone else has experienced this issue?=C2=A0=20

Thanks,

Bob



=C2=A0
What does the WinSDR log file reveal?&nb=
sp; I have found that WinSDR is usually pretty "verbose" in its l=
ogging statements, and especially when it starts complaining.  For me,=
 the "green trace" is a result of having no A/D board connected to the =
;system, or having WinSDR set to the wrong computer I/O port.
 
Steve
 

--- On Mon, 9/12/11, Robert Thomasson <rlthomasson@.......
com> wrote:


From: Robert Thomasson <rlthomasson@.........&=
gt;
Subject: Re: WinSDR Wireless Interference?
To: psnlist@webtronics=
..com
Date: Monday, September 12, 2011, 6:20 PM


Jerry,

Thanks for your reply.  No, there=
 is not a totally blank screen.  The WinSDR screen stays there but the=
re are no seismometer wiggles (hope we're not losing our layman audience he=
re)  on it.  There are no lines at all, no straight lines and no =
seismo wiggly lines.  I have to reboot WinXP to get it up and running =
again and when it comes back, there are the straight green lines for the ti=
me period that WinSDR was having it's problem.   But again, when =
the problem happens there are no lines at all, just the blank WinSDR system=
 window as if I'd opened the program without a seismometer connected.
I have checked the cable connections and all other connections literally =
dozens of times and I also don't get the same symptoms of a blank WinSDR sc=
reen when I disconnect a cable.

When WinSDR goes into its problem mo=
de, I can't just close it and re-open it to get it running
 again.  It will open but not connect to the seismo.  I have to r=
eboot WinXP to get WinSDR running again.  

I agree that it seem=
s unlikely that it's a frequency/antenna problem but I've convinced myself =
that it only happens when the router or wireless computer starts transmitti=
ng data.

Thanks,

Bob



Now that I've gone public=
 with this problem, I can rest assured that the solution will be something =
embarrassingly simple.

Bob


On Mon, Sep 12, 2011 at 3:40 PM, <gpayton@.............> wrote:





By =E2=80=9Cloosing trace=E2=80=9D, do you mean totally blank screen o=
r a line drawn without the seismometer wiggles?
 
I ask because I had a connection problem arise between my sensor and L=
arry=E2=80=99s A/D box.  For convenience, I had added right-angle adap=
ters at the box connectors.  One adapter frequently lost the connectio=
n from the sensor and all that was displayed on the computer was a straight=
 green line.  I removed the adapter and it worked fine. 
 
I too am using an old Dell running XP, but do have it connected to the=
 LAN.  I know that this probably does not answer your problem, but I d=
oubt seriously that it is frequency / antenna problem.
 
Regards,
Jerry Payton




 

From: Robert Thomasson 
Sent: Monday, September 12, 2011 5:01 PM
To: psnlist@...............
 
Subject: WinSDR Wireless Interference?
 

 



I have had some trouble keeping my Win=
SDR up and running.  It frequently shows just a blank screen, with all=
 helicord traces gone.  Just as if I'd just opened the software withou=
t a seismometer connected to the computer.  The computer is an older D=
ell with a 2 GHz processor and 512 Mb RAM, running WinXP with I think servi=
ce pack 3.

What is interesting about this phenomenon is that there i=
s a wireless router in the house (the seismo server has no wireless capabil=
ity and is not connected to the network) and WinSDR will work fine until so=
meone sits down at another computer and the wireless network starts exchang=
ing traffic.  Then the WinSDR screen loses the displayed data and goes=
 blank.

Is it possible that somehow the USB cable from the seismomet=
er to the seismo server computer  is acting as an antenna and picking =
up enough interference from the 2++GHz wireless LAN system to crash
 WinSDR?  WinSDR does not actually crash, it just loses the data trace=
s, which disappear.  My next step is to dig out some old books and see=
 if I can figure out what length the seismo cable would have to be to reson=
ate at the wireless LAN frequency.   But I think it would have to=
 be very short?

This is another unexpected educational aspect of thi=
s hobby!   Just wondering if anyone else has experienced this iss=
ue?  

Thanks,

Bob



 

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