Note however that the M12+T’s I/Os are 3V, not 3.3V and not 5V.
On Jun 11, 2014, at 19:46 , paul swed paulsw...@gmail.com wrote:
Chris is correct many GPS receivers do not output anything till queried.
Further it seems the TX and RX data may need to be swapped. That has bagged
me a few times
In my case, the cold-start frequency of my OCXO with EFC at midpoint was off
sufficiently far that I needed a minimum number of remainder bits to know which
way to initially steer it. Don't recall the exact number I needed, but it was
more than eight at 10 MHz. Like this design, I had 16 bits
I should have said warm start, not cold. I was referring to the code, not the
oscillator. So tell me, the OCXO is warm, there's no previous EFC information
to draw upon, and the oscillator is off-frequency by more than can be measured
with, let's say eight timer bits. What do those early
Precisely my point. My oscillator's tuning range and the timer frequency and
the sampling interval dictated the minimum number of timer bits needed. In my
case, as I recall, eight was not enough. Once locked, yes, but not initially.
On Apr 10, 2014, at 14:26, Hal Murray
Certainly. However I was addressing only the measurement capabilities of the
timer with regard to its width, not the overall operation of the system.
On Apr 10, 2014, at 15:52, Tom Miller tmiller11...@verizon.net wrote:
Don't you also need to wait for the GPS at first power up?
-
Jim,
Can't help you with the on-board battery as my M12+T's were the optional
external battery types. But as for the connector, I got both PCB-mount and
IDC-type cable assemblies as free samples from Samtec. Can't seem to find the
part numbers at the moment but can dig for them if you need.
Said,
I looked through the literature on your website, but didn't see any pictures of
the inside of the unit. I'm curious to see the board and component compliment.
Regards,
Brent
On Apr 4, 2014, at 20:19, Said Jackson saidj...@aol.com wrote:
Paul,
Forgot to mention, there is a spec
, please contact me
off-list to make arrangements.
It is my hope that these parts will find their way into the hands of hams,
time-nuts and other WWVB users who will put them to good use in their projects.
73,
Brent / KD0GLS
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-second window.
73,
Brent, KD0GLS, Minneapolis
On 27 Jun 2013, at 11:50, Martyn wrote:
Hello,
I have been asked the following by a customer:
The M12M GPS receivers have two ways of compensating for antenna delays.
The @@AY and the @@Az commands.
So the 1 pps output can be moved
available.
.73,
Brent, KD0GLS, Minneapolis
On 27 Jun 2013, at 13:51, Bob Stewart wrote:
The transformer gives me about 20 volts DC out. Dropping 8 volts at 1 amp is
just a lot of power to void with a resistor. I'd like to avoid having that
much waste heat in the unit. I do have an old power
written
C doesn't do well on PIC16s. Furthermore, today's PIC16F product line is
quite broad, including several higher-performance parts which make coding in C
even more attractive. They aren't all old and all slow, at least in their
product class.
73,
Brent, KD0GLS, Minneapolis
Yes. My most recent post showed up many hours (maybe six or eight) after I
sent it. That was perhaps two or three weeks ago.
73,
Brent, KD0GLS, Minneapolis
On 20 May 2013, at 18:18, J. Forster wrote:
Is anyone else seeing posts to this list showing up many hours to days late?
-John
Interesting... I never even received a response from Symmetricom to my request
for a quote. But I do now regularly receive their sales emails.
On May 2, 2013, at 12:22, Jonatan Walck jwa...@netnod.se wrote:
On 2013-05-02 14:18, Poul-Henning Kamp wrote:
In message
it mentioned in various data
sheets that tarnish will of course affect solderability, but no mention of
signal loss.
Thanks in advance.
73,
Brent, KD0GLS, Minneapolis
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I'm looking at Synergy's Tech Note #493 for the SSR-6Tr and trying to make out
the part number of the PIC from the picture. Looks like it might be a PIC24F
part. Would appreciate knowing the actual part number from one of you who's
already received your board.
73,
Brent, KD0GLS, Minneapolis
Thanks to all who replied with that part number. Come to think of it, if
anyone has any (moderately high-res) photos of the front and back of the board,
those would be great to see as well.
73,
Brent, KD0GLS, Minneapolis
On 21 Dec 2012, at 15:06, Dale J. Robertson wrote:
PIC
Brad,
Could you please elaborate on what exactly you heard, and when, so we can keep
our ears ready?
On Aug 22, 2012, at 11:30, Brad Dye b...@braddye.com wrote:
Thought you guys might like to read this and maybe send them some more
reports:
-Original Message-
From: Brad Dye [
In my experience (which is admittedly less than that of many others here) the
time reported is that of the PPS pulse that just happened, and the
documentation usually bears that out. There's a real-time clock running inside
the receiver that is synchronized to the PPS. At the top of the second,
Tom,
Your online Nixie clock started counting backwards UTC time after the leap
second occurred, as in when the Enterprise was in a time warp.
Sent from my iPod
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Ken,
I sent you an email with all three documents attached. Did you not receive
them?
.73,
Brent, KD0GLS, Minneapolis
On 31 Jan 2012, at 18:03, ken johnson wrote:
Thanks for the reply Steve- yes, I can access nasa.gov and nist.gov ok, but
no matter which way I try, tf.nist.gov just
Justin,
A while back, I did some crude experiments with the C-Max CME6005 IC which is,
I believe, used in that evaluation module. If memory serves, there were some
rather severe restrictions documented in either the datasheet or an application
note regarding the loading on the TCO/TCON pins.
device favor a cosine LUT versus a sine LUT? On the surface,
starting the roller coaster ride at the top of the hill (assuming the phase
accumulator starts from zero) seems odd.
.73,
Brent, KD0GLS, Minneapolis
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devices suggests they are clearly
calling out one or the other, but without rationale regarding the choice.
.73,
Brent, KD0GLS, Minneapolis
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would potentially show an abrupt change in dv/dt (slew rate) with the
frequency change. By using a cosine LUT the signal would be at its peak, and
dv/dt would be virtually zero both before and after the frequency change.
Bob LaJeunesse
Ann Arbor, MI
From: KD0GLS kd0...@mninter.net
To: Time
===
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.73,
Brent, KD0GLS, Minneapolis
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with the particulars.
Thanks for the bandwidth!
.73,
Brent, KD0GLS, Minneapolis
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