On Sat, Dec 20, 2014 at 12:12 AM, Poul-Henning Kamp
wrote:
>
> In message , Mark Sims
> writes:
>
> >I believe there are 5370 ROM dumps on KO4BB.COM
>
> They're also in the BBB-5370 repos.
>
> >I few years back i posted on this forum how I restored a 5370A
> >that had a missing ROM boar
I just picked up an old DeLorme Tripmate GPS receiver for cheap, and
am wondering if it can be used for getting a 1 PPS signal. I looked
online a little and found it's pretty common, but didn't see anything
about getting deep into the guts. Most hacks seemed to be about
getting it powered up, f
>From a Time-Nut perspective, isn't phase/frequency of the (nominal) 60 Hz
all we'd be interested in? Phase is best measured at a zero crossing as
this is the (only) phase measurement point which is independent of
amplitude.
Mike
-Original Message-
From: time-nuts [mailto:time-nuts-boun..
Magnus wrote:
So, I do not completely agree that a through-zero measurement with a
TIC has all the information
No, a series of time-stamped zero crossings doesn't have all of the
information in the original signal, and a small glitch that occurs
during the middle of a cycle (far away from a
Ulli wrote:
I would also be interested to learn for which devices these board
were originally made - couldn't find anything.
The board should have a part number etched in copper, of the form
"0-y". "" should be the instrument model number.
Best regards,
Charles
Thanks, Charles.
The board should have a part number etched in copper, of the form
"0-y". "" should be the instrument model number.
08770-y is etched in copper => 8770A Arbitrary Waveform Synthesizer.
8770A spec: REFERENCE OSCILLATOT (10 MHz Quartz) Aging rate < 5 x
10^^-10/day
Mod Mix wrote:
Hi,
the HP 10811D I just purchased (one like ebay #300568433895) resides
on a small pcb.
Could someone pls guide me which voltage for the LM317 feeding the
oscillator with 12V should be applied at J1/1 and J1/2 ?
I would also be interested to learn for which devices these board w
Hi,
the HP 10811D I just purchased (one like ebay #300568433895) resides on
a small pcb.
Could someone pls guide me which voltage for the LM317 feeding the
oscillator with 12V should be applied at J1/1 and J1/2 ?
I would also be interested to learn for which devices these board were
original
Hi
> On Dec 20, 2014, at 10:26 AM, Ole Petter Ronningen wrote:
>
> I know these has been discussed to death here, so my apologies for that.
> Also, apologies if this has already been reported; i did not find it in the
> archives..
You are the first to dig into the PFORTH side of this box.
>
>
Hi
> On Dec 20, 2014, at 10:28 AM, Li Ang wrote:
>
> Hi
>It's me again. I was debugging the new FPGA version board this week.
> The attached file is the test result of this new board, and 2 tests of CPLD
> version(2014/12/11) are also included. There are few things changed between
> these 2
Hi
It's me again. I was debugging the new FPGA version board this week.
The attached file is the test result of this new board, and 2 tests of CPLD
version(2014/12/11) are also included. There are few things changed between
these 2 version:
1) CPLD -> FPGA
2) XC6206 -> TPS79333 for TDC power su
On 12/19/2014 10:40 PM, Mark Sims wrote:
I few years back i posted on this forum how I restored a 5370A that
had a missing ROM board by installing an EEPROM into the empty socket
on the CPU board.
Based off of that, I did similar, and documented it here:
http://www.flatsurface.com/5370A/
_
Charles,
On 12/20/2014 09:24 AM, Charles Steinmetz wrote:
Gary wrote:
I try to minimize dangerous voltages. Anyway, the filtering reduces the
slew, so you can't have it both ways.
Starting with 120v gives you 10x the slew rate that starting with 12v
does, whatever filtering you use.
If by
I know these has been discussed to death here, so my apologies for that.
Also, apologies if this has already been reported; i did not find it in the
archives..
It might be of interest to some that it appears that the KS-boxes has an
adjustable PLL time constant:
:SYST:LANG "PFORTH"
>pll_rep
start
Yes, PMUs makes it a bit different. Here is a random paper someone wrote:
https://rubidium.dyndns.org/~magnus/papers/KTH_paper1.pdf
PMUs samples at some "high" frequency, mixes down the network frequency
to base-band, filters away the mirror frequency before sub-sampling it
into the configured
Gary wrote:
I try to minimize dangerous voltages. Anyway, the filtering reduces the
slew, so you can't have it both ways.
Starting with 120v gives you 10x the slew rate that starting with 12v
does, whatever filtering you use.
If by post processing you are averaging, then you certainly hav
Hi everyone,
In case you didn't notice -- for the past few days the list is in "moderation
mode" -- where all posts are held for review.
No worries; we do this now and then. You may continue to post. It just means
there will be some delay (minutes to hours) between when you hit send and when
Fellow time-nuts,
Another project to blast atomic clocks into space:
http://www.space-airbusds.com/en/press_centre/airbus-defence-and-space-assembles-most-precise-clock-ensemble-ever-for-k0q.html
Would not mind a set of those in my lab.
Cheers,
Magnus
__
In message , Mark Sims writes:
>I believe there are 5370 ROM dumps on KO4BB.COM
They're also in the BBB-5370 repos.
>I few years back i posted on this forum how I restored a 5370A
>that had a missing ROM board by installing an EEPROM into the empty
>socket on the CPU board. I did h
I believe there are 5370 ROM dumps on KO4BB.COM
I few years back i posted on this forum how I restored a 5370A that had a
missing ROM board by installing an EEPROM into the empty socket on the CPU
board. I did have to jumper a couple of address lines to the EEPROM and
perhaps tweak the da
Corby, that's gorgeous. Can't think of a better man to accept that
challenge, tvb excepted.
Were I twenty (or 30) years younger, I'd love a challenge like that, but
my employer would not allow time for such a project.
What I've done while working is accumulate stuff to do when I retire.
That happ
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