Just spotted an nice Austron 1295D Distribution Chassis on EBay :
160411619373
A/B inputs and 20 low noise high isolation outputs.
$200
Downside is the power supply is dual DC, but these are modular units, so
could be easily changed to AC.
Rob Kimberley
Thanks for all the responses. A quick check before breakfast shows that
mine would seem to be for 5 Volts since the power consumption at that
input agrees with the data sheet referenced; the current peaks at 0.95 A
warming up and 0.13 A warm. Reference V out is 4.8 V.
Dan
Running it at 5V with a Ref out at 4.8V would seem too close. Maybe it's a
12V part?
If nothing else this could be a very stable, ovenized 4.8V lab reference
source..
Is anyone planning to monitor the aging/stability/noise of this reference?
bye,
Said
In a message dated 12/23/2011
Running it at 5V with a Ref out at 4.8V would seem too close. Maybe it's a
12V part?
Has anybody traced out the board? Is the power to the OCXO connected to one
of the power rails feeding the Rb?
--
These are my opinions, not necessarily my employer's. I hate spam.
On 12/23/2011 08:26 PM, saidj...@aol.com wrote:
Running it at 5V with a Ref out at 4.8V would seem too close. Maybe it's a
12V part?
If nothing else this could be a very stable, ovenized 4.8V lab reference
source..
Is anyone planning to monitor the aging/stability/noise of this reference?
A search of the Vectron site for OCO500 (which is on my unit) brings up
a datasheet which references that as a replaced unit.
http://www.vectron.com/products/ocxo/c4550.pdf
Shows there are 5, 12 and 3.3 volt options. I don't see where 4.8 volts
is a reference output voltage, the closest is 5
On 12/23/2011 11:26 AM, saidj...@aol.com wrote:
Running it at 5V with a Ref out at 4.8V would seem too close. Maybe it's a
12V part?
I'm pretty sure it is a 5 Volt part Said, the power drawn in both states
matches the data sheet well. Warm up is quick and correct for the size
etc., at 5 V so
El 23/12/2011 20:38, Hal Murray escribió:
Running it at 5V with a Ref out at 4.8V would seem too close. Maybe it's a
12V part?
Has anybody traced out the board? Is the power to the OCXO connected to one
of the power rails feeding the Rb?
The OCXO is supplied separately and does not seem
Depending on how old these OCXOs are, I may have an original datasheet for
them. Most of my collection is early to mid 90's.
-Dave
- Original Message -
From: Javier Herrero jherr...@hvsistemas.es
To: time-nuts@febo.com
Sent: Friday, December 23, 2011 12:37:10 PM
Subject:
On 12/23/2011 12:42 PM, d.sei...@comcast.net wrote:
Depending on how old these OCXOs are, I may have an original datasheet for
them. Most of my collection is early to mid 90's.
Dave, obviously it would be great if you did have one, but from the data
sheets, Vectron assigned an arbitrary
Figures...
-Dave
- Original Message -
From: Dan Rae dan...@verizon.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Friday, December 23, 2011 12:59:11 PM
Subject: Re: [time-nuts] eBay Giveaway Vectron OCXOs
On 12/23/2011 12:42 PM,
On 12/23/2011 09:59 PM, Dan Rae wrote:
On 12/23/2011 12:42 PM, d.sei...@comcast.net wrote:
Depending on how old these OCXOs are, I may have an original datasheet
for them. Most of my collection is early to mid 90's.
Dave, obviously it would be great if you did have one, but from the data
On 12/23/11 1:16 PM, Magnus Danielson wrote:
On 12/23/2011 09:59 PM, Dan Rae wrote:
On 12/23/2011 12:42 PM, d.sei...@comcast.net wrote:
Depending on how old these OCXOs are, I may have an original datasheet
for them. Most of my collection is early to mid 90's.
Dave, obviously it would be
El 23/12/2011 22:16, Magnus Danielson escribió:
PS. Santa, you can fit the H-maser under the Christmas tree next to my
car.
And if possible, not over your car? ;)
Regards,
Javier
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On 12/23/2011 10:31 PM, Jim Lux wrote:
On 12/23/11 1:16 PM, Magnus Danielson wrote:
On 12/23/2011 09:59 PM, Dan Rae wrote:
On 12/23/2011 12:42 PM, d.sei...@comcast.net wrote:
Depending on how old these OCXOs are, I may have an original datasheet
for them. Most of my collection is early to
On 12/23/2011 10:32 PM, Javier Herrero wrote:
El 23/12/2011 22:16, Magnus Danielson escribió:
PS. Santa, you can fit the H-maser under the Christmas tree next to my
car.
And if possible, not over your car? ;)
Indeed. He knows it well from my many visits, so I'm not all that worried.
Hi All,
I have a spare 1295D with dual AC/DC power supplies, autoswitch input module
and output modules. It's here in the UK (Cambridge) and is unused. but may have
some marks from storage. I only have one manual but I can scan it.If anyone is
interested drop me an email off list.
Robert
I tested a couple of the oscillators. The Reference Output Voltage does not
plateau as the input voltage is increased. It does hit 3.00V for an input of
3.3V. It is at 4.5V when the input is 5v and keeps climbing well past 5V as
the input voltage is raised. So, it appears to be a simple 0.9
A startup current of 0.95A at 5v implies a power of almost 5W and that is
way above the spec value 3.3W. That is another vote for the oscillator
being 3.3V.
John WA4WDL
--
From: Dan Rae dan...@verizon.net
Sent: Friday, December 23, 2011 10:27
Agreed, and, so much for using the reference output as a stable lab
reference.
On 12/23/2011 5:03 PM, jmfranke wrote:
A startup current of 0.95A at 5v implies a power of almost 5W and that
is way above the spec value 3.3W. That is another vote for the
oscillator being 3.3V.
John WA4WDL
John,
If the one that failed is now dead, they are not all that hard to open
up. Component
failure analysis once was a job for me. I've not looked at my two
closely and they
are not in front of me, but I use to grind off the seam two ways, have
a can opener,
they actually make them for this
Hi,
I've Scanned the 1295D manual that I have. It's just ynder 15MB. Anyone want to
host it? Note that it only covers certain modules in detail, Austron complied
custom manuals for each configuraion ordered.
Robert G8RPI.
I can host it if non of the 'usual suspects' speaks up
-pete
On Fri, Dec 23, 2011 at 3:01 PM, Robert Atkinson robert8...@yahoo.co.uk wrote:
Hi,
I've Scanned the 1295D manual that I have. It's just ynder 15MB. Anyone want
to host it? Note that it only covers certain modules in detail,
KO4BB is a great site you can upload it to.
Just follow the instructions
On Fri, Dec 23, 2011 at 6:17 PM, Pete Lancashire p...@petelancashire.comwrote:
I can host it if non of the 'usual suspects' speaks up
-pete
On Fri, Dec 23, 2011 at 3:01 PM, Robert Atkinson robert8...@yahoo.co.uk
Robert's scan of the Austron 1295D manual is no available in the
Time-Nuts section of www.to-way.com
A fine is a tax for doing wrong. A tax is a fine for doing well.
Peter Cooper, of Fermi Lab, says, Every experimentalist knows
that the apparatus, or at least your understanding of it,
I would appreciate a copy once you have it availabe somewhere. Thanks.
Doug, k4cle
Connected by DROID on Verizon Wireless
-Original message-
From: Pete Lancashire p...@petelancashire.com
To: Robert Atkinson robert8...@yahoo.co.uk, Discussion of precise time and
frequency measurement
You are welcome to upload it to my Manuals pages:
http://www.ko4bb.com/manuals/
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Robert Atkinson robert8...@yahoo.co.uk
Sender: time-nuts-boun...@febo.com
Date: Fri, 23 Dec 2011
This plot shows the phse difference between a Thunderbolt and FE-5680A
starting immediately after power up of both units.
At first the Rb is searching for lock, and the phase is all over the place.
The Rb locks at about 160 seconds. The rest I assume is the Thunderbolt
warming up and getting
I have a Racal-Dana 1992 Nanosecond Universal Counter that includes
a phase measuring function. I also have a GPIB interface and wrote some
C code to log these readings which can be displayed with gnuplot.
The phase should be measured for a very long time - days perhaps. The
ability
to
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