There have been many questions posted here about the units, here are a few
answers I have collected:
1. the 8140 can drive up to 25 total downstream 8410T taps on the combined
outputs. The mopdels are frequency specific, and are not easily changed, 10Mhz
is the most common. The front selector
walter shawlee 2 wrote:
There have been many questions posted here about the units, here are a
few answers I have collected:
1. the 8140 can drive up to 25 total downstream 8410T taps on the
combined outputs. The mopdels are frequency specific, and are not
easily changed, 10Mhz is the most
At 17:37 26/07/2011, you wrote:
In message 20110726173114.63txv1m944ss0...@webmail.fc.up.pt,
asma...@fc.up.pt
writes:
Would someone tell me, please, if the Master, at Sellia Marina,
or the Slave X, at Lampedusa, of the 79900 Mediterranean Chain
are still in operation.
As far as I know, they
This is only pseudo time-nuts related...
I'm wiring up (yet another) net4501 with a Motorola M12 GPS..
This net4501 has the RS232 driver chip there for the 2nd serial port (previous
units I purchased didn't, which made life easier for
me).
Can I solder my GPS tx/rx lines on the ttl side of the
No, you can't simply wire two logic outputs together. One or the
other logic state is stronger (Yes I know poor analogy) and wins.
The details are here.
http://en.wikipedia.org/wiki/Wired_logic_connection
But it is pretty easy to remove a chip especially if you don't care if
you damage it. The
Jose
As with most things, it depends. The 53310A was designed and marketed at the
RF design community where there was a need to be able to display parameters
such as settling time of PLLs and to display frequency-based modulation modes
in the time domain. To this end, the 53310A is a superb
I don't follow exactly what you are doing here, but 232 receivers are generally
TTL compatible. Connecting 232 outputs to logic can't be done. The signal swing
is too large, and worse yet, goes negative. You can scale it with resistors and
use a diode clamp (Schottky).
As a side note, these
Hi
If you:
1) Run a reasonable length of coax (say 5 M and 100M)
2) Neglect the 50 ohm termination
You can get quite a bit of 10 MHz RF running around on the outside of the
coax shield. Depending on grounding it may or may not be a problem.
The taps appear to deliver an ADEV of ~ 1x10^-11 at a
In message 1401727327-1311800995-cardhu_decombobulator_blackberry.rim.net-1457
183595-@b12.c1.bise6.blackberry, li...@lazygranch.com writes:
As a side note, these 232 chips have jitter in both the receive
and transmit path.
It is also not uncommon to see serious tempcos on the delay
through the
Sorry to hear pictures would be something to see.
So slowly but surely loran C in Europe is going away.
On Wed, Jul 27, 2011 at 3:58 PM, Marco IK1ODO ik1...@spin-it.com wrote:
At 17:37 26/07/2011, you wrote:
In message
Just received a Efratom M3100. I have no information and before I power it
up I like to know if any one has experience with this unit. Looking at the
construction it is definitely mil quality, machined frames, JX and JM
parts,mil connector etc. Definitely not a low cost version. Date Code
Hi group,
I know my question is time-nuts of topics but as I know
there are some really skilled GHz specialists on the group
I like to ask whether somebody made experience
using a prescaler MMIC (i.e. up to 12GHz) as a
very wideband preamp?
Thanks for answering
Peter
In message CAD2JfAjycHu7jP4d4_d3R2BZBM=bxqw+xdm+xrkd9xjaf7l...@mail.gmail.com
, paul swed writes:
Sorry to hear pictures would be something to see.
So slowly but surely loran C in Europe is going away.
Well, depends on EU politics, so it is anybodys best guess really.
It's a terribly long story,
Hi Peter,
I don't think you can use a prescaler as an amplifier - for the latter
its output signal must be of the same frequency.
With best regards,
Vadim
On 28.07.2011 1:38, Peter Krengel wrote:
Hi group,
I know my question is time-nuts of topics but as I know
there are some really
I'm not sure if there's been other data posted, but a few years ago I
did phase noise measurements of the 8140T as well as HP 5087A and
TADD-1. That info is at
http://www.febo.com/pages/amplifier_phase_noise/
I got my hands on a tub full of 8140Ts but don't have the 8140 driver.
However,
Hi
Based on your data the floor of the taps are a bit lower than I thought. I have
only looked at a full system end to end. I was looking at AVAR so the numbers
would not compare directly.
Very few people have lab standards that run -120 dbc/Hz at a 1 Hz offset. Even
fewer instruments have a
The M12 is 3V logic. I assume the net4501 is 5V logic, so you may need
level shifting for the connection to work reliably and not damage the M12.
Steve
On 7/27/2011 2:02 PM, Chris Albertson wrote:
No, you can't simply wire two logic outputs together. One or the
other logic state is stronger
I agree this does not make sense. There is a divider in the way so its not a
preamp.
On Wed, Jul 27, 2011 at 6:26 PM, Vadim Demidov q...@peterstar.ru wrote:
Hi Peter,
I don't think you can use a prescaler as an amplifier - for the latter its
output signal must be of the same frequency.
Note the phrase as a side note. ;-)
No way should you connect a TTL output to a 232 output.
Ahem (cough cough) as a side note, the 232 jitter is so bad you can see it on a
storage scope. It varies from chip to chip, but a microsecond RMS isn't out of
the ballpark.
--Original
It is a digital divider chip. It would be a very non linear device in that
application.
Sent from my iPod
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