Hi all --
I have the info for setting up the output freq. Has anyone managed
to snag the info for the test points and adjustments in this beast?
thanx!
-ls-
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi
Bud,
I have a couple of these units going nicely, but I agree with Bob, you
are best to sort the pinouts for yourself since they vary.
Take the lid off (it's fairly simple, screws on the base, on the side
and by the connector) and identify the 5V regulator input, then use an
Ohmmeter to find where
I did purchase one of the "New" FE-5680A Rb's. Looking at packaging and
the housing it does look new. I have not powered it up because of +5 Volt on
pin 4. Does any one know its purpose and is there a power up sequence. Any
help will be appreciated.
Bert Kehren Miami
___
I blame you all .. I have no reason to get one of the $40 units, but
sigh .. I did.
wonder how many of the 40 odd the seller had, were bought by TN's
-pete
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-
Hi
Like pretty much every other rubidium on the planet - no, not as far as I know.
Most of the test points and adjustments are of the "even if we told you, you
aren't set up to use it" nature. Put another way, they would have to provide a
lot of proprietary information to enable you to do anyt
Bob Camp wrote:
Hi
Like pretty much every other rubidium on the planet - no, not as far as I know.
Most of the test points and adjustments are of the "even if we told you, you aren't set up to use it" nature. Put another way, they would have to provide a lot of proprietary information to enabl
Bob Camp wrote:
My personal experience suggests that setting one up is indeed a black art known
only to the select few. The high priest takes them into the back room and they
magically come return in working order several days / weeks / what ever later.
High priest goes on vacation - not muc
On 2/6/2011 9:57 AM, Murray Greenman wrote:
there should not be a 5V
input required on the 5680A.
There are MANY versions of 5680A. Some definitely do need 5 V input to
work. From this thread, apparently on the ones that do need 5 V input,
different versions even use different pins for this v
Interesting to read the comments of others who have these. I have one I got
years ago, gave up on. I knew it worked because I could see the 50 something
MHz inside moving around and then locking up. I finally found out how to
hook RS232 up to it and reset the frequency. It couldn't be set to exactl
The confusion is understandable. There are so many different variants of
the FE-5680A, and they are not easy to identify.
Some of the information you see out there is from folk who measure the
voltage on the pins with a meter, not understanding what they are
looking at. When I've investigated such
time-nuts@febo.com
Subject: [time-nuts] FE-5680A
I did purchase one of the "New" FE-5680A Rb's. Looking at packaging and
the housing it does look new. I have not powered it up because of +5 Volt
on
pin 4. Does any one know its purpose and is there a power up sequence. Any
help
-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of ewkeh...@aol.com
Sent: Thursday, November 10, 2011 8:31 AM
To: time-nuts@febo.com
Subject: [time-nuts] FE-5680A
I did purchase one of the "New" FE-5680A Rb's. Looking at packaging and
the housing it does look new.
Assuming it's the same as the units I have (two labels, with "FEI P/N
217400-30352-1" on the upper label and two barcodes on the lower
label) then the +5V supply runs all the logic in the unit. There are
no special power sequencing requirements, but you need both supplies
for the unit to operate. T
Thank you Peter
With Jose's and your input I will power it up in the morning. Mine has the
same part # and a date code 0330. Does yours respond to the trim pot, I
plan to bring out the tuning voltage to a modified Shera controller.
Bert
In a message dated 11/10/2011 5:03:07 P.M. Eastern Sta
Peter,
Is the 10 MHz output a clean sinewave or does it look kind of trashy ?
thanks,
BillWB6BNQ
Peter Bell wrote:
> Assuming it's the same as the units I have (two labels, with "FEI P/N
> 217400-30352-1" on the upper label and two barcodes on the lower
> label) then the +5V supply runs a
As far as I can see, the trimpot has no effect at all - the only frequency
trim on the unit is via the RS232 interface on pins 8 and 9 of the
connector I suspect this is adjusting the c field, but have not actually
verified this. It does definately change the output frequency, though.
On Nov 11, 20
On 11/10/2011 11:02 PM, Peter Bell wrote:
> Assuming it's the same as the units I have (two labels, with "FEI P/N
> 217400-30352-1" on the upper label and two barcodes on the lower
> label) then the +5V supply runs all the logic in the unit.
It looks like there are many variants of the FE-5680A...
It's fairly clean - there is a bit of harmonic distortion since its being
generated from a 10MHz square wave via a simple LC filter but it seems
otherwuse quite nice. The RF architecture of these new units is quite
different from the old ones and the VCXO now runs at 60MHz this is divided
down in a
...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Peter Bell
Sent: Thursday, November 10, 2011 2:38 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FE-5680A
As far as I can see, the trimpot has no effect at all - the only frequency
trim on the unit is via the
Hi, Alberto
That appears to be one of the older units and may not require the 5V supply
on pin 4 - the simplest test is just to apply 15V and see if you get an
output on pin 6 at the right frequency. If so, you don't need the 5V
connection.
Regards,
Pete
On Nov 11, 2011 6:55 AM, "Alberto di Ben
It's my experience (and I have two FE-5680A and an FE-5680B, plus a couple
of FE-5650As) that you don't need a +5V supply with the FE-5680x devices,
just a +15V supply.
Now of course the model number has little to do with what we find inside -
there seem to be many variants - so I recommend th
The FE 5680A's advertised as NEW are not NEW! A friend that made me
aware of the sale did notice clear signs of use, so I did a closer inspection
under a Microscope and found clear indications that the unit has been
bolted down in the past. Does work fine and I am looking at ways to go
d
Hi Folks,
I played with a few of these that came off the cut up board you describe.
The ones I had put out 1PPS ONLY!
Internally they ran at 8.xx Mhz that divided down to the 1 Hz.
I was able to engineer a tiny add-on board using very small 10Mhz
crystals and made them put out 10Mhz.
By the way
As part of testing the FE 5680A for aging over two weeks, all I can say
that the rate is low (2 E-12?), since temperature sensitivity masks aging.
Performing temperature tests, I get 4.3 E-12 per degree C. I plan to
temperature control the heatsink and perform additional tests and start th
Bert,
There's a very nice way to separate diurnal thermal sensitivity from long
term ageing. It applies equally well to Rb sources as to OCXOs, which is
where I've used it.
What you do is set up to make frequency observations against a more stable
reference (of course in this case a GPSDO or
Hi
My guess is that the supply is in the thousands...
Bob
On Dec 12, 2011, at 7:16 PM, Pete Lancashire wrote:
> I blame you all .. I have no reason to get one of the $40 units, but
> sigh .. I did.
>
> wonder how many of the 40 odd the seller had, were bought by TN's
>
> -pete
>
> __
Though I have not purchased one or two and at this point they won't arrive
before Christmas, I suspect that we time nuts really have not made a huge
dent measured by the posts here.
This is indeed one of those deals.
Regards
Paul.
On Mon, Dec 12, 2011 at 7:22 PM, Bob Camp wrote:
> Hi
>
> My gue
On Mon, Dec 12, 2011 at 4:22 PM, Bob Camp wrote:
> Hi
>
> My guess is that the supply is in the thousands...
We don't know the number of units he has but was can see how many were
sold. ebay provides a link to bidding and sales history. I looked
and I say so far "dozens not thousands". You can
Some of the offers include free shipping, others not.
That affects the calculation.
On 12/12/2011 05:42 PM, Chris Albertson wrote:
On Mon, Dec 12, 2011 at 4:22 PM, Bob Camp wrote:
Hi
My guess is that the supply is in the thousands...
We don't know the number of units he has but was can see h
I had thought of doing the same .. but trying trying to keep the junk
pile lower then the roof
On Mon, Dec 12, 2011 at 5:42 PM, Chris Albertson
wrote:
> On Mon, Dec 12, 2011 at 4:22 PM, Bob Camp wrote:
>> Hi
>>
>> My guess is that the supply is in the thousands...
>
> We don't know the number o
Hi
There are several dozen listings for the FE-5680's if you count up all the
different sellers, shipping options, and PC board / no pc board choices. My
*guess* is that there are also another batch of listings if you dig into the
European and Asian eBay listings. That's a lot of activity ...
Pete I have been trying to keep your pile down.
;-)
If I do buy them it will be a pair also.
Regards
Paul
WB8TSL
On Mon, Dec 12, 2011 at 8:48 PM, Pete Lancashire wrote:
> I had thought of doing the same .. but trying trying to keep the junk
> pile lower then the roof
>
> On Mon, Dec 12, 2011 at
If someone says "or best offer" of course I'm going to make a smaller offer when
multiple items are for sale. This is what the seller is telling you to do.
I bought one and finally tonight hooked it up to see if it ran. After a few
minutes it locked up nice. For the price, I think I will pic
On Mon, Dec 12, 2011 at 05:42:31PM -0800, Chris Albertson wrote:
> I was searching Google for information on these. Seems if you are
> not on this list info is hard to come by.
I have bought one of these a couple of months ago. It's working, but
I have not the opportunity to verify accuracy aga
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Peter Gottlieb
Sent: 13 December 2011 02:17
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FE-5680A
If someone says "or best offer" of course I'm
With all the talk on the list about these things, and considering the
price, I could no longer resist temptation and ordered two from
nichegeek.
First, I was amazed at the speed at which I received these units. The
order was placed last Friday, the shipment went out late Saturday and
I received th
I too would be interested in a pdf copy. Ideally in the way of an FTP
or WWW source. I am not too sure that gmail could handle > 1MB.
Thanks Geoff
--
#
Geoff Blake, G8GNZ JO01fq: Chelmsford, Essex, UK
or
Using Linux: Ubuntu 11.04 on
Hi Gents,
received my FE-5680A UN 63401 S/N 0311-61144...
Anybody can advise a few idea about this "module"..?
>From the label I can see it requires +5 Volt but no info about the RS232...
Can I adjust the " C " field from the DB9 connector
Any info appreciated.
Many thanks a
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
Hello all, this is my first participation here, as I´ve just joined this
interesting group.
I´m trying to test a Rb oscillator FE-5680A, but I don´t have information about
the DB-9 connector pinout, because this model doesn´t
); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
Stan, Rex and Peter,
Thak you very much for all the information about the oscillator.
I´ve just received reply from the manufacturer, as you can see below. I´ll try
to get information from Motorola, but I think it´s a rather
Dear time-nuts:
I have several FEI FE-5680A rubidium oscillators running and am looking for
any alignment information that might be available.
I can successfully communicate with them via the serial port and can control
the DDS to change output frequency. However, there are several pots and
I just posted my rather long dissertation on the FE-5650A and FE-5680A
synthesizer board. A critical observation is that the F=reference frequency
value returned by the "S" command is NOT the value that the unit is actually
operating at as shipped from the factory. It is the value that the ph
Hello,
I was wondering if anybody has the full command set for this Rb
oscillator. I know that FE-5680A means very different things and some
commands are unit type dependent, but I think that there should be
commands to monitor some health data, something similar to the LPRO-101
and FRS-C wh
I decided to order a Rb standard, and I was wondering what the lower limit on
the 15V power requirement is? I have a PSU that will go up to 14.25V and my
next closest is 18V. Should I just get a new 15V PSU before this gets in?
Maybe I can make a quick mod on the big one and take it up to 15V
Disassemblers are hardly rocket science. They are only a parser with a pile
of memory to remember labels. Why not write your own? I've written them in
the past (a long way in the past, and I've written cross-assemblers too), so
I don't see anything difficult about writing one for the 8051.
The
Hello,
Since I bought my FE-5680A (10 MHz, 1 PPS variety), I have been
collecting control programs for it and keeping then in reserve. Now
that I'm going to box it with a distribution amp I tried some of them,
first of all to adjust the frequency against the GPS. I used Bob
Campbel's VK4XV
I have received several requests stemming from the original posting a few
days ago to include a TIFF format in addition to the RAW and PSD format used
in Photoshop. My goal was to trace the 1pps and lock circuit so I did not go
for smooth grayscale in the printed 8x11 pictures I pasted on my shop w
Is anyone familiar with the hazards of an undervoltage supply on an FE 5680A?
I've seen reports of users running it at a more commonly available 13.2V
instead of 15V.
What module might be most affected? The lamp?
Thanks,
Leigh.
___
time-nuts mailin
The FEI units use two paralleled low dropout regulators to drop the 15V input
voltage down to 14V. There is also a series protection diode that drops some
more voltage. Combined you need at least 14.7V input. Anything less and the
regulators will not regulate and the unit will not work withi
I've attached an SMA connector to my FE-5680A and built an external
linear power supply with a TO-3 7815.
I ran the device today for about half an hour, and used an infrared
sensing thermometer to measure the external case temperature.
It got up to 48 C externally in the physics package area.
Leigh,
I agree with Chuck. I have both an FE-5650A and an FE-5680A. With the
former I was concerned about the heat, and so ran it only for short
periods, until I understood what was going on. I had the impression from
the data sheet that there were different heatsink options for different
temperat
Almost all rubidium standards DO specify the use of some form of a heat sink.
For the FRK and M100 units this can be a heat sink with around 1" fins or just
bolted to a metal plate or chassis.
The military freq standard that had M100's in them had the unit mounted to a
5x5x.2" aluminum plate
Also see my post from June of last year where I had measured the heat sink rise
over ambient of several rubidium oscillators in free air... the FEI-5650 was
very close to it's operating limit if operated in free air and not attached to
something:
http://www.febo.com/pipermail/time-nuts/2008-J
I think we've all learned from this. Good info about the Efratom unit,
and sounds as though we should aim for around 38C with the FEI units as
well. The FE-5680 looks to be easier to deal with than the FE-5650, so
I'll look into that first.
Murray ZL1BPU
_
I recently purchased an FE-5680A 10 MHz RFS from China and it came with a label
attached indicating the pinout of the DB9 connector as pin 1: +15V, pin 2: GND,
pin 3: +5V, pin 7: RF Out. From what I can determine from Googling the
manual, pin 3 is more likely a lock detect output. I have no i
I know that several list members have bought FE-5680A rubidiums. Of
all the various ebay sellers that you have bought this model from, who
would you recommend? If I wanted a straight 10MHz unit vs a frequency
agile unit, would you recommend a different seller?
Joe Gray
W5JG
On Wed, Apr 20, 2011 a
I just bought a couple of 5680A's that have the same FEI p/n. They are
pop-riveted to a heavy double-sided board., obviously cut off from a
longer board. I've removed one of these from it's board/heatsink. There
are two pots on the board, only one of them can be trimmed with the case
on. The sinewa
I have done some more checking and identified the C field pins: one has
2.5163 V, the other 2.5294 V. Would be nice to know which one gets varied in
units with C coil adjustment. Xtal Osc. is 60 MHz on this unit. Also has an
AD 9832 in it, unit is specked at 25 MHz so it does not run off the
They are tempting
-pete (looking at bank account)
On Sat, Nov 12, 2011 at 10:07 AM, wrote:
> I have done some more checking and identified the C field pins: one has
> 2.5163 V, the other 2.5294 V. Would be nice to know which one gets varied in
> units with C coil adjustment. Xtal Osc. is 60 MHz
Bert posted:
"I am looking at ways to go directly to the C field to disciplin the Rb.
Does any one have info that would help to do so.
I don't know if this applies to your Rb but this is pretty typical of the
cheapie Rb.
In the LPRO the C field is created from a low resistance coil that is
I am not familiar with how these units are set up. I have a couple of
older Ball units which simply put out 10 MHz, but these FE ones seem to
have this external crystal oscillator? How does that work? I've seen
these 5680A's for sale cheap and they come with these external 63 or so
MHz oscil
Hi Peter: The external oscillator is just "thrown in" to the deal; they
have nothing to do with the Rb unit. You also get a gratuitous 9 pin
connector. These units should be self-contained.
Don
Peter Gottlieb
> I am not familiar with how these units are set up. I have a couple of
> older Ball un
On 11/12/2011 9:46 AM, Don Latham wrote:
I just bought a couple of 5680A's that have the same FEI p/n. They are
pop-riveted to a heavy double-sided board., obviously cut off from a
longer board.
I think those pop-rivets are actually screws with a small hex socket in
the center. That's what was
Aha. Well, they were hollow, so I drilled 'em out. Didn't want the big
card anyhow :-)
Don
Rex
> On 11/12/2011 9:46 AM, Don Latham wrote:
>> I just bought a couple of 5680A's that have the same FEI p/n. They are
>> pop-riveted to a heavy double-sided board., obviously cut off from a
>> longer boar
Kind of joining in late.
Might this be the epay womart for $49 inclouding shipping?
That really is quite a good price.
May also order one up.
Regards
Paul.
On Sat, Nov 12, 2011 at 5:04 PM, Don Latham wrote:
> Aha. Well, they were hollow, so I drilled 'em out. Didn't want the big
> card anyhow :-
That's it, I think. Look for the large base and the extra crystal,
completely extraneous.
Don
paul swed
> Kind of joining in late.
> Might this be the epay womart for $49 inclouding shipping?
> That really is quite a good price.
> May also order one up.
> Regards
> Paul.
>
> On Sat, Nov 12, 2011 a
I can let you know what I've found out about these units - I got given
a couple of dead ones and did a bit of poking around trying to get
them working. I didn't get that far, since one of the units was
easily fixed (the MAX882 3.3V regulator had failed) and the other
seems to have a faulty Rb abso
Pete
Thank you for your information. I agree with your findings and as I pointed
out previously it support the math that the AD 9832 is used for tuning.
That allows them to set the Rb at the optimum operating point based on their
gas mixture. What I like to know is how they control the C fie
Paul
it is listing # 250911887702 from ggg*fitting. I think we will see prices
dropping even more since there are only so many time-nuts.
Bert Kehren
In a message dated 11/12/2011 10:14:18 P.M. Eastern Standard Time,
paulsw...@gmail.com writes:
Kind of joining in late.
Might this be the
On 11/13/2011 10:36 AM, Peter Bell wrote:
> I can let you know what I've found out about these units - I got given
> a couple of dead ones and did a bit of poking around trying to get
> them working. I didn't get that far, since one of the units was
> easily fixed (the MAX882 3.3V regulator had f
Yes, I'm quite sure this is how it works - if you scope the snap diode
drive you can quite clearly see both the 60MHz and the 5.3MHz from the
DDS chip mixed together. My assumption is that the DDS output is
subtractively mixed with the 114th harmonic of the 60Mhz inside the
cavity: 60*114 = 6.840
Pete
That is exactly the same math I did, there is no other choice but it would
be nice if some one can help on the C field. I just finished mounting it on
a heat sink added a Toshiba 15 V 3 A power supply and a 7805 and will run
it for a month with out changing any thing. Will read it twice
Seems like a lot of folks selling these lately.
Curious minds would like to know why.
On 11/13/2011 07:15 AM, ewkeh...@aol.com wrote:
Pete
That is exactly the same math I did, there is no other choice but it would
be nice if some one can help on the C field. I just finished mounting it on
a hea
Le 13/11/2011 18:21, Chuck Forsberg WA7KGX N2469R a écrit :
Seems like a lot of folks selling these lately.
Curious minds would like to know why.
I expect they are lots from telecom providers who are are replacing kit
that is being upgraded.
I don't see any date codes on the boxes. Has anyone w
here's a different layout
250896271094
-pete
On Sun, Nov 13, 2011 at 3:45 AM, wrote:
> Paul
> it is listing # 250911887702 from ggg*fitting. I think we will see prices
> dropping even more since there are only so many time-nuts.
> Bert Kehren
>
>
> In a message dated 11/12/2011 10:14:18 P.M. E
Telcom upgrade, just like where all the Thuderbolts came from
On Sun, Nov 13, 2011 at 9:21 AM, Chuck Forsberg WA7KGX N2469R
wrote:
> Seems like a lot of folks selling these lately.
> Curious minds would like to know why.
>
> On 11/13/2011 07:15 AM, ewkeh...@aol.com wrote:
>>
>> Pete
>> That is ex
The ones with the 2 labels have a date code as the 4 digit prefix on
the S/N - so a unit that says "S/N 0416-756124" was made in week 16
2004. All the ones I've seen date from 2003 or 2004.
The board they were originally attached to was largely empty -
although it did have a label indicating that
erizon Wireless
-Original message-
From: Peter Bell
To: Discussion of precise time and frequency measurement
Sent: Sun, Nov 13, 2011 18:32:26 GMT+00:00
Subject: Re: [time-nuts] FE 5680A Warning
The ones with the 2 labels have a date code as the 4 digit prefix on
the S/N - so a unit that
t many made by Lucent (I believe Lucent calls their Rb units
> FTU's for frequency and timing unit).
>
> Connected by DROID on Verizon Wireless
>
> -Original message-
> From: Peter Bell
> To: Discussion of precise time and frequency measurement
>
> Sent: Sun, Nov 1
t; Connected by DROID on Verizon Wireless
> >
> > -Original message-
> > From: Peter Bell
> > To: Discussion of precise time and frequency measurement
> >
> > Sent: Sun, Nov 13, 2011 18:32:26 GMT+00:00
> > Subject: Re: [time-nuts] FE 5680A Warning
Hi All,
Just a few words on the different types of FE5680.
The types requiring 5v on one of the pins only have a simple L C filter
to "sine" up the square wave and are only suitable for locking digital
devices. The variants with the SMA or single 15v supply have a multipole
band pass filter f
Murray
Thank you for the info. It would how ever tie up equipment which I want to
use for other projects. I am only looking at the FE5680A once a week and
since we have right now what we call Chamber of Commerce weather the AC is
most the time off. Temperature control will be a must any way,
With mine due to arrive soon, I have some questions.
1. Will it work on 12 volts instead of 15?
2. Is the serial i/o really RS-232 or something else
3. Is there a command list?
4. Which pinout list is correct?
--
Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com
Developer of In
I removed the oscillator from the circuit board using an Allen wrench
on the other side of the board. Somewhat easier than unscrewing the
obvious way, especially with a worn tool.
I removed the lid and lifted the plastic sheet. I did not see anything
alarming.
It is now mounted on the outside
Is there a schematic available?
I have a Tbolt that came with a failed oscillator that might
enjoy whipping an FE5680A into shape. I'm thinking along
the lines of a multi megohm resistor connecting the Tbolt
DAC output with some point in the C field regulator.
--
Chuck Forsberg WA7KGX N2469R
I bought a couple of these on EBay recently. Would like to know from the
group what the typical shipping times have been so far from China.
Cheers
Rob Kimberley
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.
My E-bay FE-5680A finally arrived. (4weeks later)
Of the pins on the DB-9 connector, which one is the RF output?
The manual only talks about an SMA output.
I know this has been talked about before, but I cannot find the thread.
Thanks in advance & sorry for bandwidth,
-Brian, WA1ZMS
On 1/4/2012 3:18 PM, saidj...@aol.com wrote:
Here is a set of performance plots for the FE5680A that we had measured
before.
Performance has improved significantly, ADEV is now in the xE-012's.
Phase noise and spurs are worse than originally reported, they kind of
suck.
Frequency over time lo
Thanks for posting this. The slight hump in the adev plot at approx 1,300
seconds is interesting (and similar to what I am seeing in another Rb from
another vendor.)
--- On Wed, 1/4/12, saidj...@aol.com wrote:
> From: saidj...@aol.com
> Subject: Re: [time-nuts] FE-5680A performanc
Hi Graham,
the TSC5125A has auto-scaled the plot to 2E-04Hz fractional frequency from
10MHz, or in other words one vertical division is 2E-011 at 10MHz, or 20
parts per trillion, or 0.0002Hz error.
I also don't like the way the TSC shows the frequency, and the fact that
you can only captu
Wow, have you a TSC5125A? Lucky you...
On Wed, Jan 4, 2012 at 11:12 PM, wrote:
> Hi Graham,
>
> the TSC5125A has auto-scaled the plot to 2E-04Hz fractional frequency from
> 10MHz, or in other words one vertical division is 2E-011 at 10MHz, or 20
> parts per trillion, or 0.0002Hz error.
>
> I a
Yes, it is the most amazing time nut tool! The older TSC5115A is also
amazing.
I consider myself very lucky...
bye,
Said
In a message dated 1/4/2012 14:17:48 Pacific Standard Time,
azelio.bori...@screen.it writes:
Wow, have you a TSC5125A? Lucky you...
On Wed, Jan 4, 2012 at 11:12 PM,
Subject: Re: [time-nuts] FE-5680A performance
Here is a set of performance plots for the FE5680A that we had measured
before.
Performance has improved significantly, ADEV is now in the xE-012's.
Phase noise and spurs are worse than originally reported, they kind of suck.
Frequency over
Said:
Thanks fro the explanation. I didn't understand the scaling method.
--- Graham
==
On 1/4/2012 4:12 PM, saidj...@aol.com wrote:
Hi Graham,
the TSC5125A has auto-scaled the plot to 2E-04Hz fractional frequency
from 10MHz, or in other words one vertical division is 2E-011 at
10MHz, or 20 p
om] On
> Behalf Of saidj...@aol.com
> Sent: Wednesday, January 04, 2012 4:18 PM
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] FE-5680A performance
>
> Here is a set of performance plots for the FE5680A that we had measured
> before.
>
> Performance has improved signi
On 1/4/2012 7:44 PM, Said Jackson wrote:
They are printed to a postscript file by the TSC5125A using the "print" button
on the tsc.
How long until they're $200 on eBay? :-)
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to htt
Mike,
Buy $500 worth of silver coins or bars today. Should get you about 15 ounces.
Within 3 to 5 years you may be able to trade that for a used TSC5115A...
Sent from my iPad
On Jan 4, 2012, at 17:20, Mike S wrote:
> On 1/4/2012 7:44 PM, Said Jackson wrote:
>>
>> They are printed to a postsc
and frequency measurement
Cc: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FE-5680A performance
Hello Bill,
They are printed to a postscript file by the TSC5125A using the "print"
button on the tsc.
After FTP download I use Acrobat Professional to conv
> Hi Graham,
>
> the TSC5125A has auto-scaled the plot to 2E-04Hz fractional frequency
from
> 10MHz, or in other words one vertical division is 2E-011 at 10MHz, or 20
> parts per trillion, or 0.0002Hz error.
>
> I also don't like the way the TSC shows the frequency, and the fact that
> you can o
I also don't like the way the TSC shows the frequency, and the fact that
you can only capture about 9 minutes of information for some reason. Why not
show 24 hours or 48 hours of data here?
Said,
The 9+ minutes (540+ seconds) is due to the 640 pixel display
minus the soft menu that appears o
1 - 100 of 845 matches
Mail list logo
