On Jul 25, 2011, at 2:32 PM, Tijd Dingen wrote:
> A quick check shows digikey sells them in single quantities, and has current
> stock.
Good news. I hadn't checked for five months, but maybe my original search was
faulty. Funny that they're $1.40 more expensive than the microcontroller ($10
vs
ment
Sent: Sunday, July 24, 2011 11:05 PM
Subject: Re: [time-nuts] 5370 firmware hacking status report
On Jul 24, 2011, at 2:40 PM, Poul-Henning Kamp wrote:
> Ethernets big advantage is that it is galvanically isolated, USB is not.
You had mentioned this issue in February. And since I currentl
On Jul 24, 2011, at 2:40 PM, Poul-Henning Kamp wrote:
> Ethernets big advantage is that it is galvanically isolated, USB is not.
You had mentioned this issue in February. And since I currently flash using USB
I went ahead and bought the evaluation card for the Analog Devices ADuM4160
power/sign
Hi
I would check that things like Win 7 64 bit are happy with the USB stack on the
micro. I'm not selling anybody MS stuff, but it limits your audiance if
there's a compatibility issue. Some USB stacks are a lot better than others
(both embedded and at the OS level). Ethernet is going to be f
In message <2774adf8-762d-45c4-b3c6-edb188691...@jks.com>, John Seamons writes:
>On Jul 24, 2011, at 11:18 AM, paul swed wrote:
> I really need to get a PCI or USB GPIB interface like everyone
> else. Anyone running John's GPIB Toolkit under Wine on Ubuntu?
>
https://github.com/bsdphk/py
On Jul 24, 2011, at 11:18 AM, paul swed wrote:
> Took a look at your setup and bench. So the support for the 5370 in a HP
> vector network analyzer. Now thats some support. :-) I might tend to have
> the two flipped in the stack.
> So you are suggesting the potential to make this operational to a
On Jul 24, 2011, at 12:32 AM, Poul-Henning Kamp wrote:
> I would worry a bit about the PLL locking too, but I have no idea how
> to actually measure it.
>
> I think the 1sec max gate-time is related to the eventcounter width,
> but it might be possible to simulate a wider counter in software.
>
John,
Fantastic job on reverse engineering the counter and then actually doing
something to modernize it. I might guess implementing this on one of the
counters out of 3 would be both educational and interesting. Ending up with
a modern on the network counter.
Took a look at your setup and bench.
Poul-Henning Kamp wrote:
In message<77e0fba5-aa78-4399-9562-d1274e109...@jks.com>, John Seamons writes:
I would worry a bit about the PLL locking too, but I have no idea how
to actually measure it.
I think the 1sec max gate-time is related to the eventcounter width,
but it might be possible to
Hi,
the 5370 is capable of measuring up to 10s long time events or
frequency/period with 10s gate time. (I.e. 2^39 * 19.53ps)
Pressing 'external holdoff' activates external gating on 'EXT' input.
Then you may apply a 10s long positive pulse from an external generator,
with a few ms long paus
In message <77e0fba5-aa78-4399-9562-d1274e109...@jks.com>, John Seamons writes:
I would worry a bit about the PLL locking too, but I have no idea how
to actually measure it.
I think the 1sec max gate-time is related to the eventcounter width,
but it might be possible to simulate a wider counter i
> Now all this is fine, and somewhat amusing, but it's not clear there is
any
> particular advantage. It's not as though there are piles of 5370s lying
around
> with dead or missing CPU cards. Or that it's impossible to deal with HPIB
> anymore. One interesting possibility is adding new front-panel
John Seamons wrote:
Some progress since February's discussion:
My m6800 emulator running the 5370 firmware has been moved from the Linux box
to a little 32-bit microcontroller on it's own small evaluation-kit board.
Pictures here: http://jks.com (click on images for larger versions)
You talk t
Some progress since February's discussion:
My m6800 emulator running the 5370 firmware has been moved from the Linux box
to a little 32-bit microcontroller on it's own small evaluation-kit board.
Pictures here: http://jks.com (click on images for larger versions)
You talk to it over an Ethernet
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