2013 6:24 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Cheap 9.8Mhz Sa.22c's
Glutton for punishment, aren't you Mark! :)
There's probably no way to get to 10 MHz. I have two of these that I picked up
just to play with. Another purchaser contacted Symmetricom and actually got
some
I think I have a acquaintance in USA that can maybe help but the
shipping is going to kill me to death..
More so than buying a bunch of never-ending projects?
One question -- it seemed that you had gotten to a place where the
(one of the?) 9390(s) seemed to be more or less working, but the
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Ed Palmer
Sent: Monday, 3 June 2013 6:24 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Cheap 9.8Mhz Sa.22c's
Glutton for punishment, aren't you Mark! :)
There's probably no way
David wrote:
I hadn't thought about the uA739 for a while. It was one of the
original low-noise amps - we used to use it for phono preamps.
If you could live with the anemic output drive, they were great
opamps for the time. I preferred the 749, which had an
open-collector output (no 5k
On Mon, Jun 3, 2013 at 1:40 AM, David McGaw wrote:
They do NOT include the PPS disciplining function.
Do you think this is a hardware limitation or because they're running
the 6.01 code rather than 6.05 hence no g or y commands? I presume
there's no hope of getting the 6.05 code which is
On Mon, Jun 3, 2013 at 12:40 PM, David McGaw wrote:
I have attached the control
register map for those who have these units.
DOH! I have an X72 manual -- I thought that section looked familiar
but I don't know if I would have tried it even so.
Thanks.
--
Paul
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There is a crystal in the sa.22 that will determin what output frequencies
are available for output. On the 9.8MHz and 10MHz versions it is 6X the
nominal output frequency (58.x MHz vs 60MHz). The sa.22 can be programmed
to output xtal freq/2N for n up 2^16 (IIRC, it's in the manual).
Thus, you
These are 9.8304Mhz, is possible to move them to 10Mhz?
http://www.ebay.com/itm/Symmetricom-SA-22c-9-8304MHz-Precision-Rubidium-Oscillator-5V-and-15V-NICE-/261223397404
-marki
Kind Regards,
Mark Stephens
Mark Clemens Stephens | Customer service engineer | Non-Stop Computer Ltd
* +61 2 9011
On 06/02/2013 07:52 PM, Mark C. Stephens wrote:
These are 9.8304Mhz, is possible to move them to 10Mhz?
http://www.ebay.com/itm/Symmetricom-SA-22c-9-8304MHz-Precision-Rubidium-Oscillator-5V-and-15V-NICE-/261223397404
I looked at it, and no. They change the core oscillator, and then you
can
Hi
My understanding is that the SA-22's have a dedicated oscillator in them
related to the output frequency. You might be able to switch to 2X or 1/2 the
frequency, but not to 10 MHz. Best guess is that you yank the oscillator and
re-shoot firmware to make the change. Good luck finding
To: time-nuts@febo.com time-nuts@febo.com
Sent: Sunday, 2 June 2013, 18:52
Subject: [time-nuts] Cheap 9.8Mhz Sa.22c's
These are 9.8304Mhz, is possible to move them to 10Mhz?
http://www.ebay.com/itm/Symmetricom-SA-22c-9-8304MHz-Precision-Rubidium-Oscillator-5V-and-15V-NICE-/261223397404
-marki
Kind
are coved by the standard unit.
Robert G8RPI.
From: Magnus Danielson mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Sent: Sunday, 2 June 2013, 19:06
Subject: Re: [time-nuts] Cheap 9.8Mhz Sa.22c's
On 06/02/2013 07:52 PM, Mark C. Stephens wrote
.
From: Magnus Danielson mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Sent: Sunday, 2 June 2013, 19:06
Subject: Re: [time-nuts] Cheap 9.8Mhz Sa.22c's
On 06/02/2013 07:52 PM, Mark C. Stephens wrote:
These are 9.8304Mhz, is possible to move them to 10Mhz?
http://www.ebay.com/itm
://www.rdrelectronics.com/skip/feb/SA22c.pdf
The seller doen't ship to the UK, fancy forwarding one for me?
Robert G8RPI.
From: Mark C. Stephens ma...@non-stop.com.au
To: time-nuts@febo.com time-nuts@febo.com
Sent: Sunday, 2 June 2013, 18:52
Subject: [time-nuts] Cheap
What are you planning to do with the 10MHz signal. In some cases you can
simply use 9.8304MHz. For example my plan to drive a DDS chip. Nominally
the DDS wants 125MHz but iif I put in some odd-ball thing like 119.6MHZ all
that means is I have to change the binary word I load into the DDS chip.
The manual at least hints that you will get 1 pps out no matter which
MHz signal is generated, although I find the presence of 1 pps out and
1 pps in signals a bit confusing...
Doon
Chris Albertson
What are you planning to do with the 10MHz signal. In some cases you
can
simply use
Hello Mark and crowd,
I own one of these and I can guarantee that it CANNOT be moved without changing
the crystal, tweaking a
micro-minature coil value, and changing the firmware. And NO !, the company
would NOT send out the firmware
needed. However, if you wanted to spend between $500 and
On 6/2/13 12:52 PM, WB6BNQ wrote:
Hello Mark and crowd,
I own one of these and I can guarantee that it CANNOT be moved without changing
the crystal, tweaking a
micro-minature coil value, and changing the firmware. And NO !, the company
would NOT send out the firmware
needed. However, if you
Hi
9.3804 MHz = (2^15*3) * 100 Hz
10 MHz = 2^5 * 5^5 * 100 Hz
With a normal integer PLL, your highest lock frequency would be 2^5* 100 Hz =
3200 Hz.
Bob
On Jun 2, 2013, at 3:52 PM, WB6BNQ wb6...@cox.net wrote:
Hello Mark and crowd,
I own one of these and I can guarantee that it CANNOT
Hi
1 pps in = signal it locks to if it has that option.
1 pps out = integer divide of the main output frequency
If you change the main output frequency, you change the 1 pps by the same
fractional amount.
Bob
On Jun 2, 2013, at 3:20 PM, Don Latham d...@montana.com wrote:
The manual at
On 06/02/2013 10:05 PM, Bob Camp wrote:
Hi
9.3804 MHz = (2^15*3) * 100 Hz
10 MHz = 2^5 * 5^5 * 100 Hz
With a normal integer PLL, your highest lock frequency would be 2^5* 100 Hz =
3200 Hz.
Doable, but you better care about details, and going for a PI-loop is
the way to go. For lower
Hi
On Jun 2, 2013, at 4:05 PM, Jim Lux jim...@earthlink.net wrote:
On 6/2/13 12:52 PM, WB6BNQ wrote:
Hello Mark and crowd,
I own one of these and I can guarantee that it CANNOT be moved without
changing the crystal, tweaking a
micro-minature coil value, and changing the firmware. And
Hi
On Jun 2, 2013, at 4:10 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote:
On 06/02/2013 10:05 PM, Bob Camp wrote:
Hi
9.3804 MHz = (2^15*3) * 100 Hz
10 MHz = 2^5 * 5^5 * 100 Hz
With a normal integer PLL, your highest lock frequency would be 2^5* 100 Hz
= 3200 Hz.
Doable,
At 02:20 PM 6/2/2013, Don Latham wrote:
The manual at least hints that you will get 1 pps out no matter which
MHz signal is generated, although I find the presence of 1 pps out and
1 pps in signals a bit confusing...
It appears to have a TIC and logic for disciplining the pps out to a
GPS
Glutton for punishment, aren't you Mark! :)
There's probably no way to get to 10 MHz. I have two of these that I
picked up just to play with. Another purchaser contacted Symmetricom
and actually got some information out of them. The oscillator in these
runs at 58.9824 MHz. The default
Hi
Far cheaper to spend the $120 on the GPSDO that does the 9.8304 to 10 MHz
conversion than to send the Rb back to the factory.
Bob
On Jun 2, 2013, at 4:24 PM, Ed Palmer ed_pal...@sasktel.net wrote:
Glutton for punishment, aren't you Mark! :)
There's probably no way to get to 10 MHz. I
Bob, are you referring to a particular GPSDO (for $120)? Which is it? Can
you provide a link?
Andy Bardagjy
bardagjy.com
On Sun, Jun 2, 2013 at 4:30 PM, Bob Camp li...@rtty.us wrote:
Hi
Far cheaper to spend the $120 on the GPSDO that does the 9.8304 to 10 MHz
conversion than to send the Rb
On 06/02/2013 10:14 PM, Bob Camp wrote:
Hi
On Jun 2, 2013, at 4:10 PM, Magnus Danielsonmag...@rubidium.dyndns.org wrote:
On 06/02/2013 10:05 PM, Bob Camp wrote:
Hi
9.3804 MHz = (2^15*3) * 100 Hz
10 MHz = 2^5 * 5^5 * 100 Hz
With a normal integer PLL, your highest lock frequency would be
If you start with your 9.830400MHz Rb and then divide that by 300 you get
32768Hz.
32768Hz is what is used in watches and clocks and PC mainboards for time of
day clocks. So the maybe the best use of the Rb is to make a really good
wall clock. Use it to replace a cheap watch timing crystal.
- Original Message -
From: Chris Albertson albertson.ch...@gmail.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, June 02, 2013 3:16 PM
Subject: Re: [time-nuts] Cheap 9.8Mhz Sa.22c's
What are you planning to do with the 10MHz signal
Will it run on watch batteries?
On 6/2/2013 22:03, Chris Albertson wrote:
If you start with your 9.830400MHz Rb and then divide that by 300 you get
32768Hz.
32768Hz is what is used in watches and clocks and PC mainboards for time of
day clocks. So the maybe the best use of the Rb is to make
Hi
The GPSDO is the one I mentioned earlier. Here's a completed listing:
http://www.ebay.com/itm/Symmetricom-Nortel-NTBW50AA-12-Ch-GPS-Timing-Module-10MHz-GPSDO-Furuno-GT-8031F-/300909808907?pt=LH_DefaultDomain_0hash=item460f9f4d0b
They come up from time to time. It's not one of mine. I've
Hi
Sure it will.
How many / how long ….
Bob
On Jun 2, 2013, at 6:18 PM, Brian Alsop als...@nc.rr.com wrote:
Will it run on watch batteries?
On 6/2/2013 22:03, Chris Albertson wrote:
If you start with your 9.830400MHz Rb and then divide that by 300 you get
32768Hz.
32768Hz is what is
On Sun, Jun 2, 2013 at 3:18 PM, Brian Alsop als...@nc.rr.com wrote:
Will it run on watch batteries?
Yes. The key was your use of the plural batteries. But seriously those
32K crystals are used in many places.
--
Chris Albertson
Redondo Beach, California
albertson.ch...@gmail.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, June 02, 2013 3:16 PM
Subject: Re: [time-nuts] Cheap 9.8Mhz Sa.22c's
What are you planning to do with the 10MHz signal. In some cases you
can
simply use 9.8304MHz. For example my plan
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