Jerry,

Thanks for your reply.  No, there is not a totally blank screen.  The WinSD=
R
screen stays there but there are no seismometer wiggles (hope we're not
losing our layman audience here)  on it.  There are no lines at all, no
straight lines and no seismo wiggly lines.  I have to reboot WinXP to get i=
t
up and running again and when it comes back, there are the straight green
lines for the time 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
screen 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.  It will open but not connect to the seismo.  I
have to reboot WinXP to get WinSDR running again.

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
computer starts transmitting 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,  wrote:

>   By =93loosing trace=94, do you mean totally blank screen or a line draw=
n *without
> the seismometer wiggles?*
> **
> I ask because I had a connection problem arise between my sensor and
> Larry=92s A/D box.  For convenience, I had added right-angle adapters at =
the
> box connectors.  One adapter frequently lost the connection from the sens=
or
> 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 doubt
> 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 WinSDR up and running.  It frequently
> shows just a blank screen, with all helicord traces gone.  Just as if I'd
> just opened the software without a seismometer connected to the computer.
> The computer is an older Dell with a 2 GHz processor and 512 Mb RAM, runn=
ing
> WinXP with I think service pack 3.
>
> What is interesting about this phenomenon is that there is a wireless
> router in the house (the seismo server has no wireless capability and is =
not
> connected to the network) and WinSDR will work fine until someone sits do=
wn
> at another computer and the wireless network starts exchanging traffic.
> Then the WinSDR screen loses the displayed data and goes blank.
>
> Is it possible that somehow the USB cable from the seismometer 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 traces, 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 resonate at the wireless LAN
> frequency.   But I think it would have to be very short?
>
> This is another unexpected educational aspect of this hobby!   Just
> wondering if anyone else has experienced this issue?
>
> Thanks,
>
> Bob
>
>
>
>
Jerry,

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


I have checked the cable connections and all other connections literall=
y dozens of times and I also don't get the same symptoms of a blank Win=
SDR screen when I disconnect a cable.

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


I agree that it seems unlikely that it's a frequency/antenna proble=
m but I've convinced myself that it only happens when the router or wir=
eless computer starts transmitting 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
<=
br>
On Mon, Sep 12, 2011 at 3:40 PM,  <gpayton@..............
> wrote:





By =93loosing trace=94, do you mean totally blank screen or a line dra=
wn=20
without the seismometer wiggles?
=A0
I ask because I had a connection problem arise between my sensor and=
=20
Larry=92s A/D box.=A0 For convenience, I had added right-angle adapters at =
the=20
box connectors.=A0 One adapter frequently lost the connection from the sens=
or=20
and all that was displayed on the computer was a straight green line.=A0 I=
=20
removed the adapter and it worked fine. 
=A0
I too am using an old Dell running XP, but do have it connected to the=
=20
LAN.=A0 I know that this probably does not answer your problem, but I doubt=
=20
seriously that it is frequency / antenna problem.
=A0
Regards,
Jerry Payton




=A0

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

=A0

I have had some trouble keeping my WinSDR up and=
=20
running.=A0 It frequently shows just a blank screen, with all helicord trac=
es=20
gone.=A0 Just as if I'd just opened the software without a seismometer=
=20
connected to the computer.=A0 The computer is an older Dell with a 2 GHz=20
processor and 512 Mb RAM, running WinXP with I think service pack 3.
What=20
is interesting about this phenomenon is that there is a wireless router in =
the=20
house (the seismo server has no wireless capability and is not connected to=
 the=20
network) and WinSDR will work fine until someone sits down at another compu=
ter=20
and the wireless network starts exchanging traffic.=A0 Then the WinSDR scre=
en=20
loses the displayed data and goes blank.

Is it possible that somehow=
 the=20
USB cable from the seismometer to the seismo server computer=A0 is acting a=
s=20
an antenna and picking up enough interference from the 2++GHz wireless LAN=
=20
system to crash WinSDR?=A0 WinSDR does not actually crash, it just loses th=
e=20
data traces, which disappear.=A0 My next step is to dig out some old books=
=20
and see if I can figure out what length the seismo cable would have to be t=
o=20
resonate at the wireless LAN frequency.=A0=A0 But I think it would have to=
=20
be very short?

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

Thanks,

Bob



=A0