Folks, I have received the following, relevant to the UK
_
STANFORD TRAINING AREA, EAST ANGLIA, SEPTEMBER AND OCTOBER 2011
Dates: Between 19 and 23 September 2011 and between 03 and 07 October
2011 inclusive.
Times: 0900 -1730 BST.
Location of
http://www.fiercebroadbandwireless.com/story/fccs-genachowski-we-wont-let-lightsquared-operate-without-gps-interference-/2011-06-06
Best regards,
Brad Dye, K9IQY
Editor, AAPC Wireless Messaging News
P.O. Box 266
Fairfield, IL 62837 USA
Telephone: 618-599-7869
Skype: braddye
As some of you know, I've been working on restoring a WW II LORAN-A
system. To test it, I've been using a Tektronix TDS1002 Digital 'Scope and
a Military TS-251 Test Set.
First a bit about the LORAN-A signal. It is a precisely timed Master pulse
of roughly 2 MHz RF. The spacing of the Master
Offhand, I would suspect undersampling or mistriggering
I picked up a Hameg scope with 200 megasamples/sec a few
years ago. It saved quite a bit of time when I was putting
together a parallel interface between Linux and a Tek storage tube
terminal. Push a button and a hard copy pops out of
On 06/06/11 18:40, J. Forster wrote:
IMO, the lesson is that digital scopes do not always accurately depict
what a circuit is doing. Even a $50 analog 'scope would never have this
issue.
Out of idle curiosity, what sampling mode were you using? (ACQUIRE menu
on my TDS2024B).
In SAMPLE mode,
On 06/06/11 18:57, Chuck Forsberg WA7KGX N2469R wrote:
Offhand, I would suspect undersampling or mistriggering
I picked up a Hameg scope with 200 megasamples/sec a few
years ago. It saved quite a bit of time when I was putting
together a parallel interface between Linux and a Tek storage
Aliasing (if that is indeed what's going on) can be a problem with any digital
sampling device, including your 'scope. You may find the peak detect
function in the acquire menu useful. I assume your TDS1002 has one as my
TDS2024 does. Also, perhaps the holdoff function might improve your
On 06/06/11 18:40, J. Forster wrote:
IMO, the lesson is that digital scopes do not always accurately depict
what a circuit is doing. Even a $50 analog 'scope would never have this
issue.
Out of idle curiosity, what sampling mode were you using? (ACQUIRE menu
on my TDS2024B).
In SAMPLE
Aliasing (if that is indeed what's going on) can be a problem with any
digital sampling device, including your 'scope.
Not quite aliasing, I think, but close.
You may find the peak
detect function in the acquire menu useful. I assume your TDS1002 has
one as my TDS2024 does. Also, perhaps
In message 43ecea5a-3360-43c0-9521-ea8b6598b...@mninter.net, KD0GLS writes:
You may find the peak detect function in the acquire menu useful.
And be particular careful with the hi-res function (like peak
only it averages all the oversampled samples)
--
Poul-Henning Kamp | UNIX since
Mine stopped the same way.
I gently spread the boards apart and unsoldered the 3 pin regulator then
added a Red-LED in place of the three links (Original circuit had three
diodes) and my monitor starting working again. So it may be
recoverable.
Regards
Randall
-Original Message-
From:
Mine stopped the same way. I gently spread the boards apart and
unsoldered the 3 pin regulator then added a Red-LED in place of the
three links (Original circuit had three diodes) and my monitor starting
working again. So it may be recoverable.
Regards Randall
I agree with this as a good fix and
Sorry, I didn't give credit to you Arthur. I was following your
instructions.
My post was also to the effect that it all started going again afterward
inspite of such bad treatment (Over voltage/Over heating).
The other point omitted from my post (Obvious afterward), was that
removing the
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