There was also the short lived XPLA2 PZ/XCR3320,3960 (Ph/X) SRAM CPLD
family, which had to be configured from an external memory... just
another exception which confirms the rule.
ftp://ftp.xilinx.com/pub/coolpld/isp/960_conf.pdf
The even older intel FLEXlogic, bought by Altera, and rebranded
precise time and frequency measurement
Subject: Re: [time-nuts] PICTIC II ready-made?
On 4/28/12 12:10 PM, shali...@gmail.com wrote:
> I have not studied CPLDs but Actel has the only true Flash based FPGAs. The
> flash cells directly control the FPGA fabric. As such, they are mostly
On 4/28/12 12:10 PM, shali...@gmail.com wrote:
I have not studied CPLDs but Actel has the only true Flash based FPGAs. The
flash cells directly control the FPGA fabric. As such, they are mostly immune
to Single Event Upset that plagues just about any other FPGA technology, and
there is no conf
Yes, I should have been more specific.
The details about the state machine clock behaviour aren't on the
datasheet and were obtained by asking Xilinx.
The reason for using CMOS RAM to controll the CPLD interconnections is
to reduce the static power consumption well below that possible when
usin
Subject: Re: [time-nuts] PICTIC II ready-made?
FPGA with internal flash memory to boot from, yes, but I think that small
CPLD haven't to boot anything: they should have the interconnection array
associated with the EEPROM cell array.
On Fri, Apr 27, 2012 at 11:52 PM, David wrote:
I guess you wanted to refer to the old XPLA PZ3k/5k CoolRunner series
bought from Philips, renamed XCR3k/5k, and later enhanced to
XPLA3/XCR3kXL, not the "antique" FPGA family XC3k...
(C)PLDs don't need an external memory for configuration storing, it's
internal.
There are also some Lattice, ACT
>>configuration is loaded from EEPROM to RAM on power up<<
For every kind of logic? Even for the simplest XC3000 series (and the
Altera equivalent EPM3000 series) small EEPROM CPLD?
On Sat, Apr 28, 2012 at 9:04 AM, cfo wrote:
> On Fri, 27 Apr 2012 12:03:20 -0700, Jerry Mulchin wrote:
>
> > You m
On Fri, 27 Apr 2012 12:03:20 -0700, Jerry Mulchin wrote:
> You might want to take a look at the Atmel XMEGA parts. Far more
> capabilities than the ATMega parts.
>
Watch out .
If using an Xmega make sure to select the "U" ... Usb ones.
Most of the non U parts have an errata list longer than
Not true, the configuration is loaded from EEPROM to RAM on power up.
Bruce
Azelio Boriani wrote:
By "preload" I think you mean the configuration step of the logic. It seems
that the Xilinx one stops the clock after the configuration is done. Anyway
using small EEPROM based CPLDs you have no c
correct
Bert Kehren
In a message dated 4/27/2012 6:58:32 P.M. Eastern Daylight Time,
azelio.bori...@screen.it writes:
FPGA with internal flash memory to boot from, yes, but I think that small
CPLD haven't to boot anything: they should have the interconnection array
associated with the E
It uses a 100% standard avr-gcc toolchain as "backend" , and just creates
>> the commandline call for using that.
>> So avr-gcc , avr-as , avr-ar , avr-objcopy etc. are used "behind the
>> curtains".
>>
>
> Fascinating..
>
> Are avr-* also java? Or are there just binary versions that run on all
>
FPGA with internal flash memory to boot from, yes, but I think that small
CPLD haven't to boot anything: they should have the interconnection array
associated with the EEPROM cell array.
On Fri, Apr 27, 2012 at 11:52 PM, David wrote:
> On Fri, 27 Apr 2012 22:13:55 +0200, Azelio Boriani
> wrote:
On Fri, 27 Apr 2012 22:13:55 +0200, Azelio Boriani
wrote:
>By "preload" I think you mean the configuration step of the logic. It seems
>that the Xilinx one stops the clock after the configuration is done. Anyway
>using small EEPROM based CPLDs you have no clock at all: there is no
>configuration
On Sat, 28 Apr 2012 08:01:43 +1200, Bruce Griffiths
wrote:
>The Wilkinson TDC (dual slope) has been successfully used for decades in
>nuclear instrumentation.
>One problem is in switching the discharge current on and off
>sufficiently quickly.
>This can be largely circumvented by having it on a
By "preload" I think you mean the configuration step of the logic. It seems
that the Xilinx one stops the clock after the configuration is done. Anyway
using small EEPROM based CPLDs you have no clock at all: there is no
configuration to load.
On Fri, Apr 27, 2012 at 10:01 PM, Bruce Griffiths <
br
The Wilkinson TDC (dual slope) has been successfully used for decades in
nuclear instrumentation.
One problem is in switching the discharge current on and off
sufficiently quickly.
This can be largely circumvented by having it on all the time.
One drawback is the slow conversion speed (100us for
You might want to take a look at the Atmel XMEGA parts. Far more capabilities
than the ATMega parts.
Brief description:
Atmel AVR CPU - Clock speed to 32MHz
Memories
DMAC - Direct memory access controller
Event system
System clock and clock options
Power management and sleep modes
Sy
Contact me off list and I will be glad to work with you. Test board etc.
Bert Kehren
In a message dated 4/27/2012 2:36:45 P.M. Eastern Daylight Time,
davidwh...@gmail.com writes:
I have been looking at CPLD and FPGA designs for aggregating the logic
required but keep running up against th
I have been looking at CPLD and FPGA designs for aggregating the logic
required but keep running up against their lack of jitter
specifications for asynchronous applications. Is the part and
development cost worth replacing a handful of discrete logic when the
CPLD or FPGA is dedicated to such a s
On Fri, 27 Apr 2012 16:30:11 +0200, Attila Kinali
wrote:
>On Wed, 25 Apr 2012 23:30:45 -0500
>David wrote:
>
>> If you add a second lower current source or sink, then you can get
>> away with a LM311 class comparator and one fast timer channel in the
>> microcontroller. The input pulse width ch
iginal Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Attila Kinali
Sent: Friday, April 27, 2012 10:30 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] PICTIC II ready-made?
On Wed, 25 Apr 2012 23:30:45 -0500
David wro
The Altera Max 3000A as I mentioned before will do all TTL devices, it has
an extensive library easy to use and very cheap. All That at 200 MHz. I
became a believer and others I introduced to it love it to. In an hour from
downloading the free software you can have your first design. If I can
On Wed, 25 Apr 2012 23:30:45 -0500
David wrote:
> If you add a second lower current source or sink, then you can get
> away with a LM311 class comparator and one fast timer channel in the
> microcontroller. The input pulse width charges the capacitor and the
> timer counts how long it takes to s
On Fri, 27 Apr 2012 15:52:33 +0200, Attila Kinali
wrote:
>On Wed, 25 Apr 2012 19:17:43 -0300
>Daniel Mendes wrote:
>
>> About replacing the 74ACT175... there´s a company called "Potato Semi"
>> (well.. they make "chips", right?) whose sole business is to make damn
>> fast 74 logic. Their chips
On Fri, 27 Apr 2012 06:21:10 -0700, Jim Lux wrote:
>> It uses a 100% standard avr-gcc toolchain as "backend" , and just
>> creates the commandline call for using that.
>> So avr-gcc , avr-as , avr-ar , avr-objcopy etc. are used "behind the
>> curtains".
>
> Fascinating..
>
> Are avr-* also java
On Wed, 25 Apr 2012 19:17:43 -0300
Daniel Mendes wrote:
> About replacing the 74ACT175... there´s a company called "Potato Semi"
> (well.. they make "chips", right?) whose sole business is to make damn
> fast 74 logic. Their chips can be bought at ebay in small quantities.
> Look at this 600MH
On 4/26/12 10:46 PM, cfo wrote:
On Thu, 26 Apr 2012 14:58:26 -0700, Jim Lux wrote:
On 4/26/12 1:24 PM, Hal Murray wrote:
albertson.ch...@gmail.com said:
2) The IDE is written in Java and is portable. It is truly identical
on all platforms. Yes it uses gcc but the end user never has to deal
On Thu, 26 Apr 2012 14:58:26 -0700, Jim Lux wrote:
> On 4/26/12 1:24 PM, Hal Murray wrote:
>>
>> albertson.ch...@gmail.com said:
>>> 2) The IDE is written in Java and is portable. It is truly identical
>>> on all platforms. Yes it uses gcc but the end user never has to deal
>>> with gcc or even
On 27 Apr, 2012, at 02:57 , Chris Albertson wrote:
> Closed source drivers and "binary blob" firmware.I'd have nothing to do
> with a project that includes either of those. I'd require a open source
> platforms with a 100% free tool chain. Also, it is a bit of overkill
> after all a bare PIC
Hal Murray writes:
>
>
> albertson.chris@... said:
> > 2) The IDE is written in Java and is portable. It is truly identical on
all
> > platforms. Yes it uses gcc but the end user never has to deal with gcc or
> > even know what gcc is. Same with saving your code, hit just puts it "some
> >
On Thu, Apr 26, 2012 at 12:20 PM, Don Latham wrote:
> OK, Chris, I'll bite. What the heck is a tool chain?
It is the series (or "chain") of software tools you need to use. Text
editor, compiler, linker and whatever you need to program the chip and then
maybe a debugger and maybe version contro
On Thu, Apr 26, 2012 at 1:24 PM, Hal Murray wrote:
>
> albertson.ch...@gmail.com said:
> > 2) The IDE is written in Java and is portable. It is truly identical on
> all
> > platforms. Yes it uses gcc but the end user never has to deal with gcc
> or
> > even know what gcc is. Same with saving y
On 4/26/12 1:24 PM, Hal Murray wrote:
albertson.ch...@gmail.com said:
2) The IDE is written in Java and is portable. It is truly identical on all
platforms. Yes it uses gcc but the end user never has to deal with gcc or
even know what gcc is. Same with saving your code, hit just puts it "som
On Thu, 26 Apr 2012 13:24:52 -0700, Hal Murray wrote:
> albertson.ch...@gmail.com said:
>> 2) The IDE is written in Java and is portable. It is truly identical
>> on all platforms. Yes it uses gcc but the end user never has to deal
>> with gcc or even know what gcc is. Same with saving your cod
albertson.ch...@gmail.com said:
> 2) The IDE is written in Java and is portable. It is truly identical on all
> platforms. Yes it uses gcc but the end user never has to deal with gcc or
> even know what gcc is. Same with saving your code, hit just puts it "some
> place" and keeps track of it
d...@montana.com said:
> OK, Chris, I'll bite. What the heck is a tool chain?
It's the pile of software needed to get a chunk of hardware to do what you
want.
http://en.wikipedia.org/wiki/Tool_chain
--
These are my opinions, not necessarily my employer's. I hate spam.
___
y measurement"
>
> Sent: Wednesday, April 25, 2012 7:39 PM
> Subject: Re: [time-nuts] PICTIC II ready-made?
>
>
> On 25 April 2012 19:09, Randy D. Hunt wrote:
>
>> Then there is also the matter of surface mount components. Some people
>> my
>> not physically
OK, Chris, I'll bite. What the heck is a tool chain?
I know the Arduino has a very nice IDE...
Don
I'd require a open source
> platforms with a 100% free tool chain.
--
"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet
On Thu, Apr 26, 2012 at 3:24 AM, Andrew Back wrote:
> On 26 April 2012 00:41, Bill Dailey wrote:
> >
> > Rasberry pi appears to have fallen victim to poor pre market research.
> Essentially vapor for now. Don't know when you can get one. I have been
> looking to get one since march. RadioShac
ntact me off list for more information...
Thanks
Dan
On 4/25/2012 2:42 PM, time-nuts-requ...@febo.com wrote:
Message: 1
Date: Wed, 25 Apr 2012 12:44:30 -0500
From: "Stanley"
To: "Discussion of precise time and frequency measurement"
Subject: Re: [time-nuts] PICTIC
On 26 April 2012 00:41, Bill Dailey wrote:
>
> Rasberry pi appears to have fallen victim to poor pre market research.
> Essentially vapor for now. Don't know when you can get one. I have been
> looking to get one since march. RadioShack carries arduino.
They started shipping last week and I
Has any one considered asking Richard. As far as logic is concerned a 200
MHz Altera MAX 3000A makes a perfect substitute at a cost of $ 2.50 that
includes a very solderable socket. Works
Bert Kehren
In a message dated 4/25/2012 3:16:51 P.M. Eastern Daylight Time,
bruce.griffi...@xtra.c
On 26 April 2012 01:27, Chris Albertson wrote:
>> http://en.wikipedia.org/wiki/Raspberry_Pi
>>
>>
> I just read the above page. The Raspberry contains close source drivers
> and "binary blob" graphics firmware. That is an 100% deal killer.
It's unfortunate that it makes use of binary drivers
On Wed, 25 Apr 2012 21:26:25 +0200, Attila Kinali
wrote:
>Hi Bruce,
>
>On Thu, 26 Apr 2012 07:15:41 +1200
>Bruce Griffiths wrote:
>
>> If a suitable ADC is used the interpolator can be simplified
>> considerably whilst improving its performance.
>
>Could you tell a little bit more about what a
On Wed, 25 Apr 2012 11:13:42 -0700, Chris Albertson
wrote:
>On Wed, Apr 25, 2012 at 9:37 AM, Don Latham wrote:
>
>> I forgot to add that a simple redrafting of the II as an Arduino shield
>> with appropriate chips and chip passives would accomplish the desired
>> end without losing the very care
Their technology paper talks a lot about differential inputs and
outputs but their 74G series is naturally all single ended. They also
discuss using multiple bond wires to reduce inductance so maybe that
was all that was needed.
They sell through an Ebay store but given the price of $3 per chip a
two thumbs up for Radio Shack - they sure have their problems but they
are all we have in a lot of places. with the new Velleman and Arduino
and Basic Stamp kits, they are clearly trying. they have a ways to go,
but I try to vote with my $$$ a little bit. Cliff K6CLS
On 2012-04-25 16:41, B
That's a new one to me! I expected them to be in Idaho, though.
-Dave
- Original Message -
From: "Daniel Mendes"
To: "Discussion of precise time and frequency measurement"
Sent: Wednesday, April 25, 2012 3:17:43 PM
Subject: Re: [time-nuts] PICTI
On Wed, Apr 25, 2012 at 4:25 PM, Alan Melia wrote:
>
> Or a nice alternative might be a daughterboard for a Raspberry Pi,
> which would give you an ARM/Linux base for not much more money, and
> you could use it to create a standalone system that drives an old
> monitor for a display.
>
> http://en
On Wed, Apr 25, 2012 at 4:24 PM, WB6BNQ wrote:
> Chris,
>
> Your undying devotion to the Arduino is laudable. However, the point that
> i
> think you are missing is such functionality is also available on other
> platforms
> with the same amount of ease and support. If you take someone who has
Rasberry pi appears to have fallen victim to poor pre market research.
Essentially vapor for now. Don't know when you can get one. I have been
looking to get one since march. RadioShack carries arduino.
Doc
KX0O
___
time-nuts mailing list -- time
Message -
From: "Andrew Back"
To: "Discussion of precise time and frequency measurement"
Sent: Wednesday, April 25, 2012 7:39 PM
Subject: Re: [time-nuts] PICTIC II ready-made?
On 25 April 2012 19:09, Randy D. Hunt wrote:
> Then there is also the matter of surface
Chris,
Your undying devotion to the Arduino is laudable. However, the point that i
think you are missing is such functionality is also available on other platforms
with the same amount of ease and support. If you take someone who has never
seen, touched nor had any knowledge of any computing pro
On Wed, Apr 25, 2012 at 12:11 PM, Attila Kinali wrote:
> On Wed, 25 Apr 2012 08:45:52 -0700
> Chris Albertson wrote:
>
> > On Wed, Apr 25, 2012 at 5:50 AM, Bill Dailey
> wrote:
> >
> > >
> > > I have wondered the same thing.
> >
> >
> > It might be time for a group project to design a "Pictic I
About replacing the 74ACT175... there´s a company called "Potato Semi"
(well.. they make "chips", right?) whose sole business is to make damn
fast 74 logic. Their chips can be bought at ebay in small quantities.
Look at this 600MHz D flip flop:
http://www.potatosemi.com/potatosemiweb/datashe
On Thu, 26 Apr 2012 08:00:17 +1200
Bruce Griffiths wrote:
> If a capacitive input charge redistribution ADC is used the interpolator
> output capacitor can be directly connected to it.
> This eliminates the output buffer amp with its unknown settling time as
> well as the associated gain and of
Attila Kinali wrote:
Hi Bruce,
On Thu, 26 Apr 2012 07:15:41 +1200
Bruce Griffiths wrote:
If a suitable ADC is used the interpolator can be simplified
considerably whilst improving its performance.
Could you tell a little bit more about what a "suitable ADC" for
a time interpolator
> limited space the kitting process takes several hours to do them one at time
> :-(
>
> Stanley
>
> - Original Message - From: "Don Latham"
> To: "Discussion of precise time and frequency measurement"
>
> Sent: Wednesday, April 25, 2012 11
Hi Bruce,
On Thu, 26 Apr 2012 07:15:41 +1200
Bruce Griffiths wrote:
> If a suitable ADC is used the interpolator can be simplified
> considerably whilst improving its performance.
Could you tell a little bit more about what a "suitable ADC" for
a time interpolator is? And how exactly does it h
Chris Albertson wrote:
On Wed, Apr 25, 2012 at 9:37 AM, Don Latham wrote:
I forgot to add that a simple redrafting of the II as an Arduino shield
with appropriate chips and chip passives would accomplish the desired
end without losing the very careful engineering and testing that has
alrea
On Wed, 25 Apr 2012 08:45:52 -0700
Chris Albertson wrote:
> On Wed, Apr 25, 2012 at 5:50 AM, Bill Dailey wrote:
>
> >
> > I have wondered the same thing.
>
>
> It might be time for a group project to design a "Pictic III" that uses
> parts that are readily available. Today I'd build it arou
On Wed, Apr 25, 2012 at 11:39 AM, Andrew Back wrote:
> On 25 April 2012 19:09, Randy D. Hunt wrote:
>
> > Then there is also the matter of surface mount components. Some people
> my
> > not physically be able to work with them, learning to solder or not. I
> am
> > rapidly joining that group be
On 25 April 2012 19:09, Randy D. Hunt wrote:
> Then there is also the matter of surface mount components. Some people my
> not physically be able to work with them, learning to solder or not. I am
> rapidly joining that group be cause of my vision.
Since Arduino has been mentioned I feel oblig
On Wed, Apr 25, 2012 at 11:09 AM, Randy D. Hunt wrote:
Then there is also the matter of surface mount components. Some people my
> not physically be able to work with them, learning to solder or not. I am
> rapidly joining that group be cause of my vision.
>
Get yourself a web-cam or an used "D
On Wed, Apr 25, 2012 at 9:37 AM, Don Latham wrote:
> I forgot to add that a simple redrafting of the II as an Arduino shield
> with appropriate chips and chip passives would accomplish the desired
> end without losing the very careful engineering and testing that has
> already been done?
> Would
On 4/25/2012 7:44 AM, Attila Kinali wrote:
On Wed, 25 Apr 2012 15:24:50 +0200
Azelio Boriani wrote:
I agree, nevertheless let me add: because it is a hobby project it is good
also starting to learn how to use the soldering iron.
But for that, you need someone who shows you how to solder.
You
time
:-(
Stanley
- Original Message -
From: "Don Latham"
To: "Discussion of precise time and frequency measurement"
Sent: Wednesday, April 25, 2012 11:37 AM
Subject: Re: [time-nuts] PICTIC II ready-made?
I forgot to add that a simple redrafting of the II as an
I forgot to add that a simple redrafting of the II as an Arduino shield
with appropriate chips and chip passives would accomplish the desired
end without losing the very careful engineering and testing that has
already been done?
Would be nice to have a way to change caps without soldering as well,
Chris: I concur. Arduino base would allow simple extension to 'net
control as well.
Don
Chris Albertson
> It might be time for a group project to design a "Pictic III" that uses
> parts that are readily available. Today I'd build it around an Arduino
> rather than a PIC even if the cost is more
On Wed, Apr 25, 2012 at 5:50 AM, Bill Dailey wrote:
>
> I have wondered the same thing.
It might be time for a group project to design a "Pictic III" that uses
parts that are readily available. Today I'd build it around an Arduino
rather than a PIC even if the cost is more. Arduino is progra
Yes, better have someone who can help but nothing should prevent you from
learning something.
On Wed, Apr 25, 2012 at 4:44 PM, Attila Kinali wrote:
> On Wed, 25 Apr 2012 15:24:50 +0200
> Azelio Boriani wrote:
>
> > I agree, nevertheless let me add: because it is a hobby project it is
> good
> >
On Wed, 25 Apr 2012 15:24:50 +0200
Azelio Boriani wrote:
> I agree, nevertheless let me add: because it is a hobby project it is good
> also starting to learn how to use the soldering iron.
But for that, you need someone who shows you how to solder.
You can learn it yourself, but it takes a lot
I agree, nevertheless let me add: because it is a hobby project it is good
also starting to learn how to use the soldering iron.
On Wed, Apr 25, 2012 at 2:59 PM, Attila Kinali wrote:
> On Wed, 25 Apr 2012 02:01:36 + (UTC)
> Andrew Rodland wrote:
>
> > Would anyone be willing to sell (or loa
On Wed, 25 Apr 2012 02:01:36 + (UTC)
Andrew Rodland wrote:
> Would anyone be willing to sell (or loan for an extended period) one or two
> ready-to-go PICTIC IIs within the United States? I realize this may be rude
> to ask since it's a hobby project, but what can I say? All I want it for is
I have wondered the same thing.
Doc
KX0O
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I've been having a lot of fun with this time-nut stuff over the past year or
so, and I'm thinking about going atomic in the next year (GPSDRbO), but I'm
a microprocessor kind of guy, and I have incredibly clumsy hands with
electronics and soldering. As much, I'm wondering:
Would anyone be willing
Step recovery diodes turn off fast but have a relatively long storage
time. The fastest switched current integrators use schottky diodes.
On Tue, 7 Feb 2012 14:06:55 +0100, Azelio Boriani
wrote:
>To enhance the PICTIC II performance can step recovery diodes be used?
>Maybe the fast turn off can
On Tue, 7 Feb 2012 08:28:14 +0100, Attila Kinali
wrote:
>On Sun, 5 Feb 2012 19:55:36 -0900 (AKST)
>"Richard H McCorkle" wrote:
>
>>While using a faster timebase or higher interpolator gain increases
>> the resolution that doesn?t imply the accuracy will also increase. The
>> PICTIC II uses C
To enhance the PICTIC II performance can step recovery diodes be used?
Maybe the fast turn off can boost the switching capabilities of the
interpolator for best resolution...
On Tue, Feb 7, 2012 at 12:35 PM, Hal Murray wrote:
>
> att...@kinali.ch said:
> > BTW: does anyone know how these days lo
att...@kinali.ch said:
> BTW: does anyone know how these days low cost FPGAs perform in terms of
> jitter? (the data sheets are kind of scarce in that regard). And how do they
> compare to state of the art ECL logic?
Generally, not good.
The general problem is that they have a lot of logic and
Yes, I was thinking of trying a PICTIC II partial redesign with a Xilinx
CPLD, using other type of fast turn off diodes and so on.
On Tue, Feb 7, 2012 at 8:28 AM, Attila Kinali wrote:
> On Sun, 5 Feb 2012 19:55:36 -0900 (AKST)
> "Richard H McCorkle" wrote:
>
> >While using a faster timebase
On Sun, 5 Feb 2012 19:55:36 -0900 (AKST)
"Richard H McCorkle" wrote:
>While using a faster timebase or higher interpolator gain increases
> the resolution that doesnt imply the accuracy will also increase. The
> PICTIC II uses CMOS logic with propagation delays that vary with
> temperature m
Fellow Time Nuts,
The PICTIC II is a spin-off of a low cost front end developed for a
GPSDO to compare the oscillator to GPS 1PPS over very short (< 20us)
time intervals. In that application all that was required was 1ns
TIC resolution to match the resolution of the GPS sawtooth correction
to get t
> Set up to measure an interval that is more or less ramdon or granteed
> to cover the full range of the interpters.
> The idea is to adjust each pair the stop and start sides to cover the full
> range of possible of numbers without overlap or loss of resolution.
What source would I use to accomp
> I know the resolution can be enhanced by swapping out some parts, but it's
> been too long to recall the details.
On the schematic is a list of alternate XOs. For 50 MHz, the 1000 pf
cap is changed to 180 pf. This is stated to give 25 ps maximum
resolution. If this simple change is all that is r
I appreciate your help. Among other things, I'm not sure what to do
with the adjustment pots after I finish building the board.
Set up to measure an interval that is more or less ramdon or granteed to
cover the full range of the interpters.
The idea is to adjust each pair the stop and start side
On Sun, Feb 5, 2012 at 12:12 PM, John Miles wrote:
>
We were also talking about
> some possible GUI ideas for configuration and data acquisition, but I was
> ramping up a larger project at the time and never had time to explore them
> further.
Before anything like a GUI, I think I'm going to wr
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-
> boun...@febo.com] On Behalf Of Joseph Gray
> Sent: Sunday, February 05, 2012 11:04 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] PICTIC II q
John,
Would using the 50 MHz XO option be something I should consider?
Joe Gray
W5JG
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John,
I appreciate your help. Among other things, I'm not sure what to do
with the adjustment pots after I finish building the board.
Speaking of software, I was wondering if anyone had written a program
for controlling the PICTIC II and logging the data. Using a serial
terminal can be tedious.
> I know it has been a while since the boards were sent out, but I
> finally placed an order with Mouser to populate the two boards I
> bought. I already have the "unobtainium" chips and can program the
> PICs, so no problems there.
>
> The question is, how do I use the PICTIC II after I've assemb
I know it has been a while since the boards were sent out, but I
finally placed an order with Mouser to populate the two boards I
bought. I already have the "unobtainium" chips and can program the
PICs, so no problems there.
The question is, how do I use the PICTIC II after I've assembled it? I
ha
Just an update. Ordering of the PICTIC II chips from me is now closed. I
might do a run in a few months if there is demand. I'll get the chips
ordered tonight or tomorrow and will do my best to get them out to you guys
by the end of next weekend.
Just an FYI for those that are interested, I'm
Last call for PICTIC II chips. I'm ordering the chips this coming weekend
and if you want them, get em ordered ASAP. See the email below for
details. This will very possibly be the last time I make these available
unless there is sufficient interest in the future.
Also, to those that ordered o
I've recently acquired an SRS DG535 and am looking for anyone else who
has used one to calibrate or characterize the PICTIC II to compare
procedures.
Leigh/WA5ZNU
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The small DMDT uses no interpolator and a 50 Mhz derived from the 10Mhz
reference
Software just use the counter value or Interpolator gain 0
Hardware looking at page 2 of the schmatic all you need is C1,C2,C3 and U1 on
that page
do not install:
U3,U5,U8,U10
R1 - R23
C5,7,10,11,12,13,14,19,20,
Hi guys,
My project is over and I'll be home on Sunday. The chips that were ordered
and paid for will go out tomorrow and you should see them this coming week.
I know some of you are itchy to get chips ordered and I apologize for
dropping off the grid these past three weeks. I've been on travel
Hello everyone. It seems I'm not receiving all emails from the list. I'm
checking on two PCs (one IMAP and one POP3 both set to not delete emails
from the server) and neither one have all the emails I'm finding in the
archives. I'm actually missing entire days. I haven't figured out what the
Hi guys,
The chips should go out Monday. I've been insanely busy working this week
out in Arizona so all I did was program the 35 chips that were ordered.
I'll contact those that wanted the excess chips (roughly 5 chips total) in
the order they emailed me so we can arrange payment.
All chips wi
Robert: Do you have two left?
Thanks
Don
Robert Darlington
> Hi all,
>
> Just a reminder that I'm going to place an order for the PICTIC PIC chips
> tonight for those in the USA that want them. The price is $10.00 for the
> first one, $2.50 for each additional, including shipping and programming.
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