Don wrote:
the fet breakdown voltage has of course got to be high enough.
If the nuvistor is used as a common-cathode or common-grid amplifier,
you can cascode the fet with a bipolar to extend its drain voltage
range. You will need to come up with an appropriate bias source for
the bipolar
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of Ron Ward
> Sent: Wednesday, July 04, 2012 10:12 PM
> To: 'Discussion of precise time and frequency measurement'
> Subject: Re: [time-nuts] timelab
>
> Hi:
> I am also new and would
You need the gate volt-drain current curves to match the nuvistor
grid-plate characteristic and the fet breakdown voltage has of course
got to be high enough. I've gotten nuvistors at pretty reasonable cost
on ebay...
Don
Ron Ward
> Hi:
> I have been thinking of doing the same thing! I have some 2
So if the 5370 determines the data rate, then in calculating adev or
other such products, we're assuming the time differences are ergodic
because we're not getting them sequentially, but rather selecting the
delay intervals at long inetrvals between them?
John Miles
>> > The sample rate field in t
Hi:
I am also new and would like information about ADEV, MDEV, HDEV, TDEV,
Phase and Frequency Difference.
Thanks,
Ron
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of John Miles
Sent: Wednesday, July 04, 2012 9:18 PM
To: 'Discussion of p
Hi:
I have been thinking of doing the same thing! I have some 2N301 dual
gate MOSFET's that I want to use. I would rather consider successful
conversions done by others rather than reinvent the wheel.
Ron
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.co
Gotcha, Thanks. Happy 4th. My neighbors making many bangs. we have real
fireworks from the Res here in Montana...
Don
John Miles
>> > The sample rate field in the dialog box is only used to tell TimeLab
>> > what
>> > the actual data rate is. The program doesn't alter the counter's
>> > controls
> > The sample rate field in the dialog box is only used to tell TimeLab
> > what
> > the actual data rate is. The program doesn't alter the counter's
> > controls
> > at all.
>
> good. That will be very easy to do. Are there any tricks to use in your
> prologix setup program?
Meaning the one fr
> You're welcome, good to hear it's helpful! Yes, the front-panel display
> rate control is what I use to limit the data rate on my 5370 -- see the
> last
> part of my longer post from yesterday.
>
> The sample rate field in the dialog box is only used to tell TimeLab
> what
> the actual data rat
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of Don Latham
> Sent: Wednesday, July 04, 2012 9:37 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] timelab
>
> Thanks, John. When I did the 1s
Thanks, John. When I did the 1sec pulse start vs next 10 MHz crossing
trick, I got very reliable behavior. When I tried the start on 10 MHz
stop on 100 ft RG58 delay, I got communication loss. You've given the
symptom and cause exactly.
I can set the data rate in the sample text box in the acquire
Hi, Don --
You can view all of the measurement types (ADEV, MDEV, HDEV, TDEV, phase
difference, frequency difference) regardless of whether you are acquiring TI
or frequency data from the 5370. The performance floor will be somewhat
better in TI mode, and long-term frequency chart readings will b
Hello,
Has anyone successfully replaces the Nuvistors in the 117 and the 10509a
with FETs. I would like to replace them with inexpensive FETs instead of
buying the expensive Nunistors.
Thanks for all help,
Merchison
___
time-nuts mailing list -- tim
Got it going---doesn't take adev data in frequency mode but time
interval working fine.
Don
--
"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet to the mind."
R. Bacon
"If you don't know what it is, don't poke it."
Gho
Hi Bill,
On 07/04/2012 10:23 PM, Bill Dailey wrote:
I am measuring a 10MHz OCXO. I am wondering about my methods and their
effect of Allan Deviation.
SETUP:
I am running the signal into my radio (gps disciplined) and taking the
resulting audio and running it to a sound card (oscillator gps d
I think that no one can say anything on that setup. Anyway, try this: run
the GPSDO 10MHz into the radio and take the measurements. Then run your
signal and let us know the difference. Usually running the reference
against itself (if possible) gives the noise floor of the measurement
setup... if yo
Downloaded the latest timelab, 1.014 to use with my 5370a and prologix
net adapter. Was working with previous version. Prologix is seen in the
list, and if I pick it in acquire, I can get readings in the monitor.
when I go to measure, the notes say lost connection, and the prologix
has vanished fro
I am measuring a 10MHz OCXO. I am wondering about my methods and their
effect of Allan Deviation.
SETUP:
I am running the signal into my radio (gps disciplined) and taking the
resulting audio and running it to a sound card (oscillator gps disciplined)
then looking at the result in Spectrum lab.
Brooke,
If you don't have a manual for it look in the test equipment section
of my Web page: www.to-way.com
hadley
At 09:57 AM 7/4/2012, you wrote:
Hi:
I got a PTS 160 S2N1X for a very good price because it has no output.
http://www.prc68.com/I/PTS160.html
Are there any documents that ha
NIX means no output? Kinda like a monode?
Don
Brooke Clarke
> Hi:
>
> I got a PTS 160 S2N1X for a very good price because it has no output.
> http://www.prc68.com/I/PTS160.html
> Are there any documents that have theory of operation, schematics or
> other info that would be helpful in a repair?
>
Hi:
I got a PTS 160 S2N1X for a very good price because it has no output.
http://www.prc68.com/I/PTS160.html
Are there any documents that have theory of operation, schematics or other info
that would be helpful in a repair?
PS. What does the "X" mean in the part number PTS 160 S2N1X?
--
Have F
On Tue, 03 Jul 2012 15:33:33 -0700, John Miles wrote:
>> Ahhh ... Thanx now i know why my 1hr Trace Duration was so fast. I
>> assumed that Timelab would set the sampling interval written in Timelab
>> via GPIB. But i'll just select 1sec manually.
>
> That can be a bit confusing. The TimeLab dri
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