,
Tom
- Original Message -
From: Chris Albertson albertson.ch...@gmail.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, August 20, 2012 1:52 AM
Subject: Re: [time-nuts] Trimble T Lassen 2 -
suitableantennaadvice.questions
On Sun
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, August 20, 2012 1:52 AM
Subject: Re: [time-nuts] Trimble T Lassen 2 -
suitableantennaadvice.questions
On Sun, Aug 19, 2012 at 9:27 PM, Robert Darlington rdarling...@gmail.com
wrote:
It's a pain
: [time-nuts] Trimble T Lassen 2 -
suitableantennaadvice.questions
On Sun, Aug 19, 2012 at 9:27 PM, Robert Darlington
rdarling...@gmail.comwrote:
It's a pain to capture on any scope, but really easy to see with an
LED across the output. it's not bright, but definitely easy to see on
my
It's a pain to capture on any scope, but really easy to see with an
LED across the output. it's not bright, but definitely easy to see on
my tbolt.
-Bob
On Mon, Jul 23, 2012 at 10:11 AM, Stephen Farthing squir...@gmail.com wrote:
Hi Guys,
I have a couple of Trimble T Lassen 2 boards I bought
On Sun, Aug 19, 2012 at 9:27 PM, Robert Darlington rdarling...@gmail.comwrote:
It's a pain to capture on any scope, but really easy to see with an
LED across the output. it's not bright, but definitely easy to see on
my tbolt.
That is true. One must have very good eyes to see a one
Hi Guys,
I have a couple of Trimble T Lassen 2 boards I bought at a Hamfest -
the guy told me they were left over from a contract he had and were
brand new. He had a load and i bought a couple for use as a precision
1 PPS output for radio stuff. They were packed in static protection.
When I apply
: Monday, July 23, 2012 12:11 PM
To: time-nuts@febo.com
Subject: [time-nuts] Trimble T Lassen 2 -
suitableantennaadvice.questions
Hi Guys,
I have a couple of Trimble T Lassen 2 boards I bought at a Hamfest -
the guy told me they were left over from a contract he had and were
brand new
to be connected to a pin on the receiver connector that is
then internally routed to the antenna.
John WA4WDL
--
From: Stephen Farthing squir...@gmail.com
Sent: Monday, July 23, 2012 12:11 PM
To: time-nuts@febo.com
Subject: [time-nuts] Trimble
that is
then internally routed to the antenna.
John WA4WDL
--
From: Stephen Farthing squir...@gmail.com
Sent: Monday, July 23, 2012 12:11 PM
To: time-nuts@febo.com
Subject: [time-nuts] Trimble T Lassen 2 -
suitableantennaadvice
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bob Bownes
Sent: Monday, July 23, 2012 1:06 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Trimble T Lassen 2 -
suitableantennaadvice.questions
squir...@gmail.com said:
While i am on, can anyone suggest a reasonably priced unit that has a 1pps
output, NMEA and a built in antenna. Because I want to use this with an 8
bit embedded system I am probably not going to be able to hack one of the
many cheap USB dongle GPS's.
Garmin GPS
And here it goes again for about the umpteenth time, how to detect the
presents of a short low rep rate pulse.
This can be done with ANY analog scope by using the normal trigger mode
and setting the trigger correctly.
An analog scope can detect the presents of any short pulse no matter how low
My old '465 will trigger on the 1pps, but it's far easier to see the
trigger LED flash than finesse the brightness/sweep to make it visible -
something possible only on a 'scope with a decently bright tube.
Another cheap/easy trick to detect the 1pps pulse is simply to listen
to it with an
, 2012 2:26 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Trimble T Lassen
2 -suitableantennaadvice.questions
My old '465 will trigger on the 1pps, but it's far easier to see the
trigger LED flash than finesse the brightness/sweep to make it visible -
something possible only
That works when there is a trigger LED,
OR Just need to slow down the sweep rate to say 10ms / div or slower and
then there will be a nice clear, easy to see, can't miss, white line, across
ANY scope with each pulse when the scope is triggered by a short low rep
input pulse.
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Trimble T Lassen 2 -
suitableantennaadvice.questions
The pulse from my T-Bolt is on the order of 1uS wide. I captured it on
the
digital scope for posterity and future reference.
http://www.fastbobs.com
16 matches
Mail list logo
