In a message dated 4/12/2007 15:32:53 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Another way to dual boot that would be a lot easier than trying to graft
Win98 onto a WinXP drive is to just use another drive for Win98. Even a 1GB
drive would do. Most modern motherboards allow you to
In a message dated 4/12/2007 06:44:10 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
To set compatibility mode, find the executable and right-click for the
"properties". You will see a "compatibilty" tab. The settings should be
obvious. Click on the link at the bottom for more help.
In a message dated 4/11/2007 14:22:14 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
I thought I remember from the manual that there's a whole
set of nice SCPI commands. Can't you just send them by
hand or code something up using the USB-GPIB board?
/tvb
If only I had the time...
Co
In a message dated 4/11/2007 15:29:46 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
> I am trying to set up a Win98 machine with GPIB since I
> bought a quite old version of Visi from Wavecrest that runs
> only on Win98.
Did you try using "compatibility mode" on WinXP to run that softw
In a message dated 4/10/2007 18:44:58 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Knowing or calculating the sample rate is useful: 15-20
samples/second seems OK for a 53132. But if you were
to measure it you would come up with a more exact number.
One way to do this is time the colle
In a message dated 4/10/2007 14:33:17 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Yes ground bounce can play havoc with the effective switching thresholds.
One would expect this effect to be much worse with single ended clocks.
Bruce
Hi Bruce,
not to give away too much, but in ou
In a message dated 4/10/2007 14:28:11 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Then we would need to know/measure the jitter of the retiming flipflop.
There appears to be little definitive published data on the jitter of
various logic gates and flipflops.
Consequently a simple reli
In a message dated 4/10/2007 14:48:34 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
with a 53132A against a good atomic house standard. You'll
see a large phase offset (many microseconds), a frequency
offset (about +3e-12 or -3e-13). No, I didn't remove frequency
drift (if any) from the
In a message dated 4/8/2007 17:09:34 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
This problem is one reason why I have a Windows 98 machine to run such
irreplaceable orphaned applications.
Yeah, same here but I got my only GPIB running on Win2K for my HP Spectrum
analyzers. Just n
In a message dated 4/8/2007 16:49:00 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Since Wavecrest, 53132A etc have no specifications for the effect of the
input circuit noise with a finite slew rate input, the only way to make
a more precise comparison is to actually make some measure
In a message dated 4/8/2007 14:21:05 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
>Said,
>One way to settle this is for you to collect a data set
>of back-to-back single-shot time interval samples over
>GPIB and have a look at the data. Even a hundred
>samples is enough; it will take a
In a message dated 4/8/2007 04:02:38 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
The Wavecrest instrument only has a single shot resolution of 25ps not
as you claim 800fs (this is only achieved after averaging)
The above counters can only be compared for this purpose if their single
In a message dated 4/7/2007 15:16:30 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Your theoretical resolution seems somewhat awry see:
http://www.femto-st.fr/~rubiola/conference-articles/2005fcs%28rubiola%29-count
ers.pdf
Hi Bruce,
My math is essentially their reference [4, p.26],
In a message dated 4/7/2007 04:08:20 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
The Wavecrests are wonderful tools, but they address a different problem
than
what normal time-nuts usually care about, so they are not a given perfect
counter for long term comparision. It is aimed at j
In a message dated 4/7/2007 00:00:25 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
On the only "time-nut visit" I have done, the nut was VERY proud of his
Wavecrest! You do not think the userbase is limited by pricelevel and
availability?
Hi Bjoern,
there is one on Ebay today for $9
Hello guys,
I am looking for Wavecrest Visi software for my DTS-2075 jitter analyzer.
Does anyone know where to get it?
BTW: not sure why these units are not so popular on this list, they have
picosecond cable-length measurement which is fantastic to measure Antenna cable
delays, <3ps in
In a message dated 4/3/2007 19:29:25 Pacific Daylight Time, [EMAIL PROTECTED]
writes:
An Arianne 5 rocket had to be destroyed with its cargo when it veered
off course because of a faulty conversion from English to metric in the
guidance software. What a bummer!
I hate it when that happen
In a message dated 3/31/2007 17:29:21 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Multiplying the 2 signals is essential as the non correlated components
of the 2 signals will then average to zero (for infinite measurement
time) whilst the correlated components of the 2 signals will
In a message dated 3/31/2007 18:14:01 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Since the average person in the rest of the world copes with the metric
system without any difficulty, the first reason would appear to be based
on a tacit assumption that average US citizen is less int
In a message dated 3/31/2007 18:21:40 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
I was just looking at the 3048 manuals the other night. Bumped into a new
site
with HP manuals I haven't seen before.
Cheers,
Magnus
Hi Magnus,
do you have URL pointer?
thanks,
Said
**
In a message dated 3/30/2007 23:47:12 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Thermal noise and other noise in each channel are statistically
independent and their product averages to zero.
The actual residual decreases as the number of spectra averaged increases.
Hi Bruce,
h
In a message dated 3/31/2007 04:50:11 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
I agree, it is indeed a fantastic number, but you have to compare it with
other results. There is comercial tools out there which is only 20-30 dB
behind. Actually, the correlation techniques improves the
In a message dated 3/30/2007 19:14:31 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
With a +13dBm carrier this corresponds to a noise voltage of 100pV/rtHz
across a 50 ohm resistor or a noise current of 2pA/rtHz flowing through it.
Hi Bruce,
but isn't the thermal noise at room tem
In a message dated 3/30/2007 12:26:46 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Until I've actually read the paper, ask yourself how our GPS receivers is
able
to track signals below their internal noise.
There are a number of tricky aspects involved in doing that and I beleive the
In a message dated 3/30/2007 16:02:15 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
It does in fact measure below the thermal noise floor.
This is not too difficult as it uses a crosscorrelation technique.
Bruce
Hi Bruce,
interesting how microphonic effects would affect the results.
In a message dated 3/30/2007 10:27:10 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Even suppose you could measure
it, what would it take to generate such a pure carrier. That may even be
more difficult. -
Yup, I agree. That's a lot of dB's...
bye,
Said
**
In a message dated 3/29/2007 21:33:44 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
_http://arxiv.org/PS_cache/physics/pdf/0503/0503015.pdf_
(http://arxiv.org/PS_cache/physics/pdf/0503/0503015.pdf)
Hi Bruce,
Isn't a -200dBc/Hz floor below the thermal noise floor that can be achieved?
In a message dated 3/18/2007 06:29:32 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Yes, that is the general idea. Also medical equipment must not be used
by the US medical community in the US, hazardous materials must sold only
to companies that are proven capable of safe use and dispo
In a message dated 3/17/2007 07:40:07 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Reminds me of the extra-ordinary light bulb:
http://www.centennialbulb.org/
/tvb
This bulb has burned about 3714 Kilowatthours or so of power so far, or 3.7
Megawattshours!
That's impressive.
bye,
In a message dated 3/16/2007 20:37:28 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
> Is there anyone in the market for a used FTS-4050 for parts? I would be
> interested to sell the actual Cs reference inside the unit. Want to keep
> the 19" rack mount enclosure though.
I'm interested,
In a message dated 3/16/2007 18:32:58 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Also, some high end rubidium (such as Perkin-Elmer)
manufacturers are able to develope 133Rb clocks having
> 450 000 hours MTBF! That'a a lot of nanoseconds!
Hi Jack,
we cannot expect the units to wo
In a message dated 3/16/2007 11:34:56 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
The Cesium atoms make a one-way trip from one end of
the tube the other; from a nice solid/liquid pool of silvery
cesium in the oven to a splattered mess in the getter. So
there's no restoring the tube t
In a message dated 3/15/2007 14:02:40 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Indeed. I have a Howard Johnson DVD with Xilinx MGT fluff. Kind of nice and
pedagogic but nothing new when I got it. I think they agree with me that I
don't need the beginners material.
Hi Magnus,
ch
In a message dated 3/14/2007 23:20:54 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Matt Ettus wrote:
> I was just investigating this very issue. It seems that every program
> you use to compute these impedances comes up with different answers,
> sometimes wildly different. Anyone have
In a message dated 3/15/2007 02:56:33 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Transmission Line Design Handbook" of Brian C. Wadell
Hi Magnus,
Ouuch! This one cost me $155 at Amazon.
BTW: I can also highly recommend Dr. Howard Johnson's lectures.
bye,
Said
In a message dated 3/2/2007 03:11:25 Pacific Standard Time,
[EMAIL PROTECTED] writes:
Phase noise of -115dBc/Hz @ 10Hz for a 100MHz carrier sounds a bit
steep when compared to one of Wenzel's ultra low noise ULN series
which achieves -125dBc/Hz @ 100Hz. (these oscillators are probably the
b
In a message dated 3/1/2007 13:30:26 Pacific Standard Time,
[EMAIL PROTECTED] writes:
I had never thought about relative performance issues of using a
VCXO locked with a really narrow band PLL to a lower frequency reference
versus a multiplier with a narrow band cleanup filter at the outpu
In a message dated 3/1/2007 05:50:30 Pacific Standard Time,
[EMAIL PROTECTED] writes:
Hi Said,
It seems there are indeed many ways to kill a cat. What happens to the
close-in phase noise using this method?
Cheers,
Stephan.
Hi Stephan,
you are asking the right questions :)
The nea
In a message dated 2/27/2007 15:01:44 Pacific Standard Time,
[EMAIL PROTECTED] writes:
Sorry, my original post was not very clear - I had only wondered if
faster PPS signals might ever help with the measurement each second; I
didn't mean to suggest that they might affect the required overal
In a message dated 2/28/2007 15:20:56 Pacific Standard Time,
[EMAIL PROTECTED] writes:
It describes a way in which an analogue odd-order frequency multiplier could
be built cheaply with superior noise characteristics. This circuit that is
described is really simple and quite ingenious. Unfo
In a message dated 2/25/2007 22:20:09 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
I found it also went into blinking-LED mode if I sent it another command too
quickly and didn't have flow control working. It works fine without flow
control as long as you pause before sending it a
In a message dated 2/24/2007 01:49:21 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
The Attached GIF file illustrates one possible approach to a TAC using
discrete components.
Hi Bruce,
interesting schematics. I wonder if the circuit could be modified to
self-calibration on ever
In a message dated 2/24/2007 03:11:22 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
You will find the following presentation contains detail on the
performance of TACs implemented using modern high speed ic technology.
http://hep.uchicago.edu/workshops/2005-picosecond/8-Fukun_Tang_ps_
Thanks Rick,
I got the PDF!
bye,
Said
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In a message dated 2/23/2007 05:58:09 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
Current mode ramp generators using long tailed pairs to switch the
charging current for a capacitor are the time honoured approach for fast
ramp generators.
Hi Bruce,
would you have some sample sc
In a message dated 2/22/2007 22:17:43 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
Mine is off more (or was until it died a couple of weeks ago). But
I have yet to attempt the full cal procedure for reasons similar to yours.
I did find that using GPSDO 10 mhz the error was quite st
Thanks John,
these feedbacks confirm that it is not my mal-handling of the front panel
buttons giving me grief :)
bye,
Said
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In a message dated 2/23/2007 00:41:41 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
At HP, what we liked to do was to run a synthesizer from
the frequency standard and set it to put out an offset
frequency, like 10.0005 MHz. (We had the luxury of having
a lot of 8662's around :-) We
In a message dated 2/22/2007 23:15:49 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
3. The interpolator has somewhat questionable accuracy when you
get down to 12 digits. This is hidden somewhat by the firmware,
but if you monitor the bits the interpolator puts out, you can
see what
In a message dated 2/21/2007 06:13:52 W. Europe Standard Time, [EMAIL
PROTECTED]
writes:
So I have a bunch of these mini-circuits splitters that cover 500 - 2000
Mhz. It has continuity on all ports. Has anyone tried something like this to
use
a single GPS antenna on 2 receivers? They
In a message dated 2/18/2007 19:34:44 W. Europe Standard Time,
[EMAIL PROTECTED] writes:
Two of those, with similar symptoms of bad sockets, otherwise similar
appearance, sold within an hour of each other, one for about $100 and
the other for $250.
Hi Guys,
anybody have a 5370B (or A
Hello Jeroen,
after what some folks disclosed here, e.g. that these may all be broken
units, and that they may be the inferior commercial versions, I tend to agree.
The risk is too high for paying more than say $125..
Has anyone actually ordered, and tested one yet?
bye,
Said
Hi everyone,
I got a quote for the Symmetricom Cs tubes. No comment.
"After having done a little research, we do not have any replacement tubes
for the FTS4050 Model. We have new tubes for Models 4040, 4065, and 4201.
The cost $17,800"
bye,
Said
Hi Didier,
that's great info thanks so much, I'll be looking for one... price seems
reasonable.
I have a 5334A and B, and love the fact that they run quietly. Something to
consider on the 5370. My dream counter is the 53132A, but those are so
expensive...
bye,
Said
In a message dated 2/13/2007 12:34:00 Pacific Standard Time, [EMAIL PROTECTED]
writes:
As for the price, I would hold off. It is a nitch market. His first few may
go for $250 or more but eventually the prices will go down. He has a low EBAY
rating so he is new. Eventually he will figure o
Hello guys,
I got my FTS4050 Cesium Reference, and have it up and running. It works
quite well.
The Beam current reads 1.8V (I guess this means 1.8mA?), and Zeeman works. I
am now fine-tuning with GPS.
Some questions I had:
* Can I read the remaining lifetime of the Cs tube out of the
In a message dated 2/13/2007 09:13:50 Pacific Standard Time, [EMAIL PROTECTED]
writes:
used the "Contact Seller" button and asked him where the units came from.
He confirmed they were from the same E911 box I got mine from. He must of
got
that pallet I was trying to get! @#$%
Hi
Hi Brooke,
I Agree with Jason.
$300 is a good try for 50 units on his side, he probably paid $100 ea. for
them.
He was willing to let a single unit go for $250 on Ebay with all the hassle
of listing it, taking payment, paying Ebay and Paypal their 10% share etc.
He would probably let 10
Hello Brooke,
wow, great feedback on this item! Who is keeping track of all of the
interested parties?
How can we do a group purchase?
bye,
Said
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Hi guys,
count me in, if the price is $250 or less.
No internal DC-DC, not the greatest Allan Variance, phase noise not that
great... but for $250 who can complain.
bye,
Said
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Stephan Sandenbergh wrote:
> Hi All,
>
> My knowledge base on phase noise, low-noise design, noise figure, etc. is
> based upon many bits and pieces that I have gathered from many sources
(e.g
Sorry Stephan, I meant the IEEE UFFC Journal, not proceedings.
bye,
Said
--- Begin Message --
In a message dated 2/2/2007 04:41:14 Pacific Standard Time,
[EMAIL PROTECTED] writes:
Stephan Sandenbergh wrote:
> Hi All,
>
> My knowledge base on phase noise, low-noise design, noise figure, etc. is
> based upon many bits and pieces that I have gathered from many sources (e.g
> famous boo
Hi Chuck,
from a manufacturer's perspective:
1) Test & MEasurement electronics are exempt at least until 2009, maybe
until 2011 or longer. Good for us, we can keep using the good old Pb.
2) Consumer products reliability just took a steep dive due to tin
whiskers causing shorts in t
In a message dated 12/25/2006 06:18:57 Pacific Standard Time,
[EMAIL PROTECTED] writes:
In my own GPSDO i discipline the LO's pps to have a MAXIMUM phase offset
of 500 ms against the receiver's pps. That avoids lots of ambiguity
problems and leaves the widest phase measurement range to make
In a message dated 12/24/2006 15:05:52 Pacific Standard Time,
[EMAIL PROTECTED] writes:
[EMAIL PROTECTED] wrote:
> Hi Bruce,
>
> yes the heater circuit is problematic, and will affect stability a lot.
>
> For example, some OCXO's don't have separate (Kelvin sensed) ground pins
for
>
Hi Bruce,
yes the heater circuit is problematic, and will affect stability a lot.
For example, some OCXO's don't have separate (Kelvin sensed) ground pins for
the heater, and EFC voltage.
The result is that any changes in the heater current will cause a voltage
change in the ground pin o
In a message dated 12/23/2006 15:17:33 Pacific Standard Time,
[EMAIL PROTECTED] writes:
The FIR filter used in some GPSDOCXOs is not the optimum prefilter for
the control loop.
An exponential averaging (IIR) filter is better.
However an FIR filter has the advantage of being easy to do and
In a message dated 12/21/2006 10:44:29 Pacific Standard Time,
[EMAIL PROTECTED] writes:
1 second raw samples: 10.40 ns
then removing small linear frequency offset,
1 second samples: 9.36 ns
30 second averages: 9.62 ns
300 second averages: 10.0 ns
Did I do something wrong? PHK, what do you
Hi,
it's funny, Randy seems to be the only engineer here really familiar with
the Motorola innards.
Aren't there any Motorola GPS engineers here??
Would love to hear some of the nitty gritty details of how the
firmware/hardware works, what you guys think about the iLotus products, etc
e
Hi Bob,
thanks for the specs!!
For some reason this unit is slightly different though in it's specs:
It only uses +24V, no negative input provided by the Wavecrest PS. If you
are right, the -5.2V is only applied to the output to bias it, which is not
needed. The -5.2V pin is left floating
Hi Bruce,
great ideas, thanks!
Said
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Hi Bruce,
would you have pointers to good temperature sensing circuits with sub
millidegree resolution?
thanks,
Said
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Hi Ulrich,
good details on how to set the time constant for best GPSDO performance etc!
Some issues you did not mention are but that are essential to get a good
GPSDO are:
* Aging compensation
* Temperature compensation
* fault recovery, such as mechanical shock to crystal
Hi Stephan,
I have a surplus 100MHz Vectron OCXO from a Wavecrest DTS-2070
jitter-measurement system that was de-comissioned due to CPU memory failure.
The oscillator works great, and it was the main timebase in the $90K+ jitter
instrument, so I suspect it's the "best" OCXO they could buy
Sorry Stephan,
forgot to mention, the loop filter thermal instability is so small and slow
compared to the feedback loop that it will be completely compensated out by
the PLL phase comparator.
Since you are disciplining an OCXO, you probably want to set the loop filter
bandwidth to less
Hi there,
NS has some small PLL eval boards that are controlled using a paralell cable
to your PC.
Take a look at the LMX2316 for example. The eval board is $150 - maybe a bit
pricey.
Analog devices has footprint compatible (but not software compatible!) PLL
chips that have significantl
In a message dated 12/16/2006 12:31:31 Pacific Standard Time,
[EMAIL PROTECTED] writes:
In message <[EMAIL PROTECTED]>, Hal
Murray writes:
>
>> You still want to produce some form of quality measure for the ADEV
>> shape in order to form some form of control loop.
>
>Suppose I build I goo
HI Tom,
got it. I was wondering because there is a 10MHz OCXO in the block diagram
as well.
bye,
Said
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In a message dated 12/14/2006 16:46:10 Pacific Standard /tvb writes:
The beauty of a GPSDO is that you're only changing
the DAC every few minutes so there's plenty of time
to look carefully at the quality of your 1 Hz samples
before you commit the DAC update.
It would be a more difficu
Hi Randy,
I will do a longer-term test with +-50ns setting. That should be interesting
:)
bye,
Said
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In a message dated 12/14/2006 12:00:36 Pacific Standard Time,
[EMAIL PROTECTED] writes:
> Hello Said,
>
> from my own experience in detecting and removal of outliers i can asure
> you that it is a challenging and ambitious task in statistical math. I
> fear you expect too much from a receiv
Hi Randy,
as always, great info!
yes, please do send out the old VP TRAIM doc :)
thanks,
Said
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Hi guys,
slightly off-topic, but has anyone done stability tests with the m12+ or
M12M when the antenna goes bad in TRAIM-enabled mode (e.g. less than 4 good
sats
being received by i.e. disconnecting the antenna)?
I see that the 1PPS output goes away only after about 5 or so additional
p
Hi Tom,
thanks for the updates, I didn't see your earlier email.
Let's just hope they get this under control, and the iLotus production parts
are just as good as at least the M12+ used to be...
I did have one M12M with firmware v1.0x6 as well, and the performance was
significantly better
Hi Tom,
how many M12M iLotus samples did you test to find the one with 30ns offset?
Were these pre-production samples or mass production units?
How did the other ones perform?
Seems iLotus may not test/calibrate/inspect as thoroughly as Motorola did?
Thanks,
Said
Hi Jared,
Jackson Labs
_www.jackson-labs.com_ (http://www.jackson-labs.com)
or:
_http://www.jackson-labs.com/docs/Fury_Flyer.pdf_
(http://www.jackson-labs.com/docs/Fury_Flyer.pdf)
has the most cost-effective commercial GPS Disciplined Frequency References
as far as we know :)
We
Hi Tom,
The plot from the brochure that you are looking at is one you had measured
for us on the FireFox GPSDO predecessor, which did not have Temperature or
aging compensation, and had a much coarser TIM, DAC, and DAC reference etc but
used the same OCXO as the Fury. The Fury improves upon
Hi Tom,
we mesaured an early Fury prototype against a PRS10 using the TSC5120A with
an external 5MHz MTI 260 type free-running OCXO as a reference. The Fury was
significantly better <100s against the MTI reference than the PRS10 was
against the MTI ref, almost a factor of 10x better 1s t
Mark, John, Bill, Tom,
I received a number of off-line emails from you about the new Jackson-Labs
Fury GPSDO, thanks much for your interest! Let me try to address all of your
questions here, please excuse the long email.
I am loosely associated with Jackson-Labs - it carries my name :)
Hi Rick, Jose, Hmurray,
forgot to mention:
the Fury unit only uses about 0.35A at 12V, and runs from 11V to 14V, so it
can easily be run from a Pb battery, < 4.5W power consumption. 45min warmup
time typ. with the double-oven OCXO.
Better <100s Allan Deviation stability than the PRS10 SRS
Hi there Jose, Hmurray,
how about this one?
_http://www.jackson-labs.com/docs/Fury_Flyer.pdf_
(http://www.jackson-labs.com/docs/Fury_Flyer.pdf)
It's available in double-oven version (SC-Cut Crystal) and single-oven
AT-cut.
Software compatible to the HP GPSDO's, but lot's better perfor
Hi guys,
here is an interesting factoid: I am in China at the moment, and the Video
Playback Google feature is disabled for the entire Country. We can't view the
clip over here.
bye,
Said
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Cool Ulrich!
Professional quality program, for sure.
Thanks,
Said
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Hi Brian,
those numbers look quite impressive!
241GHz, that's almost Infrared :)
bye,
Said
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Hello Brian,
nice circuit.
Would you have phase noise info, and harmonic/ sub-harmonic measurements for
it?
Thanks,
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Hi there,
I concur, Ulrich's Plotter program is really great! And extremely fast too.
Ulrich, some points for additional features (maybe the latest version has
these already?):
* Settings such as trace color, Values Format, highlighted traces etc get
lost when re-loading the data fil
Hello Bruce,
I agree. The DAC reference is an LM7805CT regulator with 0.8mV/C (typ.)
temperature coefficient. Considering that typical Oscillators (MTI units for
example) have about +-20Hz deviation per 5V - this alone - excluding the
Opamps
tempco, would lead to a temperature drift o
Hi Magnus,
Yes, I did see some other units on Ebay recently, except those will only
work controlled by the GPIB input, they are configured to be used remotely
inside test equipment, and they seem to be untested.
My unit has been "decrypted" if you will - it runs as a standard Windows PC
Hi there,
sorry guys, one small mistake: the unit has an external 10MHz very stable
time base output and input, not 100MHz.
Their older DTS series used to have 100MHz outputs.
bye,
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Hello Fellow time nuts,
I thought this might be of interest to some of you, if not please accept my
apologies:
I have a Wavecrest high-end SRT-3000 Jitter/Phase-Noise/PLL/BERT analyzers
for sale that I got from Credence as surplus, and I am listing it on Ebay
tomorrow morning. The SRT-3
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