Am 12.08.2015 um 19:13 schrieb Dave M:
I have verified with MTI that the recommended tuning voltage for model
260-0624-C is 0 to 6V.
The datasheet range of -10V to +10V is the available range of EFC for
the entire 260 series, and may or may not apply to any specific model
within the 260
Hi
On Aug 17, 2015, at 9:59 AM, Nick Sayer nsa...@kfu.com wrote:
On Aug 17, 2015, at 4:06 AM, Bob Camp kb...@n1k.org wrote:
On Aug 16, 2015, at 9:40 PM, Nick Sayer nsa...@kfu.com wrote:
On Aug 16, 2015, at 6:04 PM, Bob Camp kb...@n1k.org wrote:
Hi
Here’s some of the “that
On Aug 17, 2015, at 12:49 PM, Nick Sayer via time-nuts time-nuts@febo.com
wrote:
On Aug 17, 2015, at 12:07 PM, Attila Kinali att...@kinali.ch wrote:
You really should read the wikipedia article on the PID loop and implement
a simple PI loop (no need for the D part). That's not more
Hi
Consider that your VCXO has a minimum tune range of 20 ppm. There are no
typicals or or
max limits shown. Just to toss out a number, say it’s 30 ppm in some cases.
They list linearity at 5%.
That’s likely per 55310, so it’s a box spec. Say that gets you to a 1.5:1 slope
ratio. Your most
Great news! :)
Cheers,
Magnus
On 08/17/2015 09:33 AM, Ole Petter Ronningen wrote:
Fantastic, just what I needed. Thank you!
On Sun, Aug 16, 2015 at 9:16 PM, Magnus Danielson
mag...@rubidium.dyndns.org wrote:
Ole,
I checked with a former Pendulum employee, and free off memory, he
recommend
On Aug 16, 2015, at 9:40 PM, Nick Sayer nsa...@kfu.com wrote:
On Aug 16, 2015, at 6:04 PM, Bob Camp kb...@n1k.org wrote:
Hi
Here’s some of the “that depends” questions:
What is your stability goal?
You talk about the NIST numbers on GPSDO’s. What level of stability are you
On Sun, 16 Aug 2015 16:54:08 -0700
Nick Sayer via time-nuts time-nuts@febo.com wrote:
If I counted correctly, you have a maximum offset of 350ns. For GPSDOs
that are close to each other, that's a quite considerable shift of phase.
Are you sure your software implements a phase locked loop
I know this is not rocket science, but I mentioned some time ago about the
possibility of using the BBC radio 4 signal on 198 kHz to make a 10 MHz
reference. My initial plan was to shift the frequency of a 10 MHz oscillator in
a Stanford Research DS345 function generator to exactly 10 MHz using
On Aug 17, 2015, at 1:16 AM, Attila Kinali att...@kinali.ch wrote:
On Sun, 16 Aug 2015 16:54:08 -0700
Nick Sayer via time-nuts time-nuts@febo.com wrote:
If I counted correctly, you have a maximum offset of 350ns. For GPSDOs
that are close to each other, that's a quite considerable
On Aug 17, 2015, at 4:06 AM, Bob Camp kb...@n1k.org wrote:
On Aug 16, 2015, at 9:40 PM, Nick Sayer nsa...@kfu.com wrote:
On Aug 16, 2015, at 6:04 PM, Bob Camp kb...@n1k.org wrote:
Hi
Here’s some of the “that depends” questions:
What is your stability goal?
You talk about
I heard back from Heol Design and it appears that this is not an isolated
issue and Heol is aware of the problem. They believe that something is
causing the GPS to lose key settings. They have updated their firmware to
reload key settings on power-up in case they had been lost. I am a bit
Fantastic, just what I needed. Thank you!
On Sun, Aug 16, 2015 at 9:16 PM, Magnus Danielson
mag...@rubidium.dyndns.org wrote:
Ole,
I checked with a former Pendulum employee, and free off memory, he
recommend trimming up the 100 MHz until Error 2 does not show. Sensing it
directly can be
On Mon, 17 Aug 2015 07:14:34 -0700
Nick Sayer via time-nuts time-nuts@febo.com wrote:
Without having had a look at your code (sorry, i currently don't have
the time for this), if you trully implemented just an FLL, then this
is where you should start from. The way to get a PLL is to let the
Hi Attila,
I'm planning to collect raw phase data from his TCXO (in holdover). Not only
will we get the ADEV of his LO but that data, plus the Adafruit GPS data, can
then be fed into the GPSDO simulator program.
Nick can modify the simulator with his current algorithm and see how his GPSDO
On Aug 16, 2015, at 6:04 PM, Bob Camp kb...@n1k.org wrote:
Hi
Here’s some of the “that depends” questions:
What is your stability goal?
You talk about the NIST numbers on GPSDO’s. What level of stability are you
after?
I believe I’m at or better than the stability I originally
David and others,
I will have to come back on the details. However, I'll give you the
overview from the top of my head.
The one calibration value kept in CMOS backup is the length of the
calibration pulse. This can be altered over GPIB. The program will sweep
over the value range (don't
Hi
For any sort of GPSDO to do well (not just this one) you really want an outdoor
antenna in a good location.
In Germany, a good location would be one that has a view of the southern sky
from due east around
to due west. Ideally you want a view down to within 10 or 20 degrees of the
horizon.
hbre...@debitel.net said:
I bought a Lucent/Symmetricom Z3810AS from the source on eBay and powered it
up today for the first time. After 11 hours the RFTG-u and REF1 module is
still showing STBY while the RFTG-u and REF0 module is ON. Is this ok
or should the RFTG-u and REF1 module show ON
Heinz
I think you are working.
I have the ref1 and ref 0 crystal unit and when operational thats the way
the LEDs work.
On my unit the system locks in 15-30 minutes from a cold start.
On start up the LEDs should step.
Then the top 2 should turn on. No gps and fault
15 minutes later fault of green
On Aug 17, 2015, at 12:31 PM, Tom Van Baak t...@leapsecond.com wrote:
Hi Attila,
I'm planning to collect raw phase data from his TCXO (in holdover). Not only
will we get the ADEV of his LO but that data, plus the Adafruit GPS data, can
then be fed into the GPSDO simulator program.
On Aug 17, 2015, at 12:07 PM, Attila Kinali att...@kinali.ch wrote:
On Mon, 17 Aug 2015 07:14:34 -0700
Nick Sayer via time-nuts time-nuts@febo.com wrote:
Without having had a look at your code (sorry, i currently don't have
the time for this), if you trully implemented just an FLL, then
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