I think you should probably be fine at 18V. The oven will run down
to at least 15V and maybe 12V.
Rick Karlquist N6RK
On 10/19/2010 5:27 AM, ewkeh...@aol.com wrote:
I plan on replacing the Xtal Osc. of my HP 5062C with a HP 10811 since I
have a few ones with AV less than 1E-12 from 1 to 100
I plan on replacing the Xtal Osc. of my HP 5062C with a HP 10811 since I
have a few ones with AV less than 1E-12 from 1 to 100 sec. I would like to
use the +18 Volt in the unit for heater. Has any one experience with running
the 10811 below 20 Volt, any thing I should look out for?
Thanks
Bruce Griffiths wrote:
>> One concern is:
> How accurate does one' thermometer which one uses to calibrate the
> thermistor bridge setpoint have to be?
>
> Bruce
The thermistors HP used were quite accurate, so you didn't
need a thermometer. You just calculated the correct resistor
value for the t
Dan Rae wrote:
> Bruce Griffiths wrote:
>
>> Meanwhile, before posting a correction I was trying to find data on the
>> oven setpoint temperature tolerance.
>>
>> The relevant HP Journal with an article on the HP10811A is:
>> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1981-03.pdf
>>
>> One c
Bruce Griffiths wrote:
> Meanwhile, before posting a correction I was trying to find data on the
> oven setpoint temperature tolerance.
>
> The relevant HP Journal with an article on the HP10811A is:
> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1981-03.pdf
>
> One concern is:
> How accurate doe
Rick Karlquist wrote:
> Bruce Griffiths wrote:
>
>> Dan
>>
>> The real reasons that this part is labelled non replaceable are
>>
>> 1) its epoxied to the oven.
>>
>> 2) Setting R20 to the correct value actually requires plotting the OCXO
>> frequency vs R20 and selecting R20 so that the OCXO fre
Bruce Griffiths wrote:
>>
> Dan
>
> The real reasons that this part is labelled non replaceable are
>
> 1) its epoxied to the oven.
>
> 2) Setting R20 to the correct value actually requires plotting the OCXO
> frequency vs R20 and selecting R20 so that the OCXO frequency is located
> at the station
Dan Rae wrote:
> The 10811-60111 that came in my 5370B counter turned out to have an open
> circuit Thermistor in it. This is a "non-replaceable" part in theory.
>
> However, nothing to lose, I have successfully substituted a Digikey Part
> number: 317-1371 100 kOhm 1% Thermistor ( from Cantherm
The 10811-60111 that came in my 5370B counter turned out to have an open
circuit Thermistor in it. This is a "non-replaceable" part in theory.
However, nothing to lose, I have successfully substituted a Digikey Part
number: 317-1371 100 kOhm 1% Thermistor ( from Cantherm, part number:
MF51B104
The LOCXO ist the oven monitor.
See on the manual 10811A/B
Juerg
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and follow the instructions there.
The seller of this 10811's on Ebay has raised his price to 80 bucks a pop.
He also is now listing LPRO-101 rubidiums for $99 (half of what everybody else
wants).
Also, on his pictures of the connectors, one pin is labeled LOCXO. What is
this signal?
ent
Subject: Re: [time-nuts] HP-10811 comming up to speed
Hi Connie,
Interesting way to use Spectrum Lab (I suppose?)
Didier KO4BB
Connie Marshall wrote:
> Here is a shot of my HP-10811 comming up from a cold start. The power was
> applied at 01:41:00. Although this graph does not show it
Hi Connie,
Interesting way to use Spectrum Lab (I suppose?)
Didier KO4BB
Connie Marshall wrote:
> Here is a shot of my HP-10811 comming up from a cold start. The power was
> applied at 01:41:00. Although this graph does not show it, the osc was about
> .05Hz low after three hours.
>
> Connie
>
Jones, K8CU" <[EMAIL PROTECTED]>
To: "Discussion of precise time and frequency measurement"
Sent: Saturday, February 03, 2007 1:45 AM
Subject: Re: [time-nuts] HP 10811 "salvage"
> You may try a replacement crystal from Jason Kutz. I remember him saying
he
&g
: Friday, February 02, 2007 10:04 PM
Subject: Re: [time-nuts] HP 10811 "salvage"
> You need a parallel resonant crystal (~20 pF) at 10 MHz.
> If you get a series resonant one, it will be high in frequency
> in the 10811.
>
> Rick Karlquist N6RK
>
>
>
>
> Scott N
You need a parallel resonant crystal (~20 pF) at 10 MHz.
If you get a series resonant one, it will be high in frequency
in the 10811.
Rick Karlquist N6RK
Scott Newell wrote:
> At 03:45 PM 2/2/2007 -0500, Mark Amos wrote:
>>
>>Now I know that it won't be as stable as the original fancy SC-cut
>
At 03:45 PM 2/2/2007 -0500, Mark Amos wrote:
>
>Now I know that it won't be as stable as the original fancy SC-cut crystal
from HP, but it might be stable
>enough to use as a non-critical bench oscillator for experimenting, etc.
I'll keep it running for a while
Hey, you might bug Chuck Wenzel.
Some time ago, I complained to the list about an HP 10811 from e-bay that was
under frequency (apparently
it was a non-production unit that somehow made it out of the factory along with
a bunch of other somewhat-
less-than-production units.)
I figured it was a lost cause, so I took it apart jus
Good stuff thanks!
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Christopher Hoover
Sent: Saturday, January 13, 2007 1:22 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] HP 10811-60155 pinout
(This info may be in the archive, I think, but maybe it
(This info may be in the archive, I think, but maybe it came up on the TAPR
time-freq list and is in that archive instead. Google site search is your
friend.)
The cross for the 10811 connector with HP 4x4 P/N 1251-2035 is definitively
to Vishay/Dale EB81-BN15TGW.
There are a number of variant
easurement'
> Subject: Re: [time-nuts] HP 10811-60155 pinout
>
> Yep I'm looking at it right now and yes it has eyelets.
>
> http://www.hudler.org/pub/IMG_4586.JPG
>
> Jack
>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
ECTED] On Behalf
Of Jason Rabel
Sent: Saturday, January 13, 2007 10:46 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] HP 10811-60155 pinout
Are you sure about that part number? I'm using edac:
357-030-520-202
It's the pins (vs the eyel
frequency measurement'
Subject: Re: [time-nuts] HP 10811-60155 pinout
Are you sure about that part number? I'm using edac:
357-030-520-202
It's the pins (vs the eyelets), but also the row-to-row spacing is .200mm,
and your model number is .140mm.
Do both fit I guess? I couldn&#x
Are you sure about that part number? I'm using edac:
357-030-520-202
It's the pins (vs the eyelets), but also the row-to-row spacing is .200mm,
and your model number is .140mm.
Do both fit I guess? I couldn't find info on the old CINC connector so I
just got out my caliper and started taking mea
Further to my previous reply, the HP Archive website has an Operating &
Service Manual for the 10811A/B at:
http://www.hparchive.com/Manuals/HP-10811AB-Manual.pdf
In section 2.20 on the page numbered 8 (actually the sixteenth page in the
PDF), a 15-pin Cinch connector is described.
Agilent have a "Product Overview" PDF for the 10811E/D on their website:
http://cp.literature.agilent.com/litweb/pdf/5091-1639E.pdf
which has a pinout. Hopefully they will have stuck to the same pinout.
Peter
> Hello,
>
> I purchased one of the HP 10811-60155 standards on ebay one m
It would be helpful to know who this seller is.
Thanks in advance.
Didier KO4BB
[EMAIL PROTECTED] wrote:
> Hello,
>
> I purchased one of the HP 10811-60155 standards on ebay one month ago and it
> was just delivered today. Seller promised to send edge connector and
> pinouts, but now refuses
s@febo.com
>Subject: [time-nuts] HP 10811-60155 pinout
>
>Hello,
>
>I purchased one of the HP 10811-60155 standards on ebay one month ago and it
>was just delivered today. Seller promised to send edge connector and pinouts,
>but now refuses to send pinout and another i
7 3:17:47 AM
To: "time-nuts@febo.com"
Subject: [time-nuts] HP 10811-60155 pinout
Hello,
I purchased one of the HP 10811-60155 standards on ebay one month ago and
it was just delivered today. Seller promised to send edge connector and
pinouts, but now refuses to
ECTED]
Sent: Friday, January 12, 2007 9:18 PM
To: time-nuts@febo.com
Subject: [time-nuts] HP 10811-60155 pinout
Hello,
I purchased one of the HP 10811-60155 standards on ebay one month ago and it was
just delivered today. Seller promised to send edge connector and pinouts, but
now refuses to
Hello,
I purchased one of the HP 10811-60155 standards on ebay one month ago and it
was just delivered today. Seller promised to send edge connector and pinouts,
but now refuses to send pinout and another item. I am unable to test the
standard.
This has been a difficult transaction and I wis
Jason Rabel wrote:
> The 10544's (without any letter after them) output just 1MHz, correct?
>
> I'm pretty sure I've seen a 10544 on eBay lately, I don't remember the
> price. If that plugs into the 5245 without an adapter board or anything that
> might be the easiest way to go.
>
> Jason
>
No
Poul-Henning,
Indeed. A fine bit of work on this very subject is seen here:
http://www.realhamradio.com/z3801a-turning-point.htm
Be sure to look at their previous article as well.
Bob Crawford
Poul-Henning Kamp wrote:
>In message <[EMAIL PROTECTED]>, Robert Crawford writes:
>
>
>
>>There i
In message <[EMAIL PROTECTED]>, Robert Crawford writes:
>There is a great article on the 10811 in the March 1981 issue of HP Journal:
>
>http://www.hparchive.com/Journals/Low-Resolution/HPJ-1981-03-Low-Resolution.pdf
I had never gotten around to read that one, but now I did.
It sounds to me like
Yes, the 10544 is 10 MHz. But the original tin can
oscillator in the 5245-series was 1 MHz. That's why
the 10544-based retrofit kit mentioned earlier divided
the 10 MHz down by 10.
/tvb
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Jason,
I'm fairly certain the 10544 is a 10 MHz oscillator. The 10811 is an
improved version with way better performance and it can usually plug
into the same connector.
There is a great article on the 10811 in the March 1981 issue of HP Journal:
http://www.hparchive.com/Journals/Low-Resoluti
The 10544's (without any letter after them) output just 1MHz, correct?
I'm pretty sure I've seen a 10544 on eBay lately, I don't remember the
price. If that plugs into the 5245 without an adapter board or anything that
might be the easiest way to go.
Jason
> Maybe it was from a 5245L. I have
necessary.
DaveB, NZ
- Original Message -
From: "Christopher Hoover" <[EMAIL PROTECTED]>
To:
Sent: Tuesday, December 12, 2006 4:20 PM
Subject: [time-nuts] HP 10811-60105 OCXO
> Hi folks.
>
>
>
> Anyone have the specs for HP 10811-60105 OCXO?It is not
David Forbes version=3.1.7 wrote:
> At 7:20 PM -0800 12/11/06, Christopher Hoover wrote:
>
>> Hi folks.
>>
>> Anyone have the specs for HP 10811-60105 OCXO?It is not listed in the
>> Mejia-Norton document. It was supposedly removed from a 5245.
>>
>> I'm also looking for a schematic for the
> Anyone have the specs for HP 10811-60105 OCXO?It is not listed in the
> Mejia-Norton document. It was supposedly removed from a 5245.
All the official specs, including the 60105:
http://www.hparchive.com/Manuals/HP-10811AB-Manual.pdf
There's another PDF for the 10811 models (HP10811-Spec
At 7:20 PM -0800 12/11/06, Christopher Hoover wrote:
>Hi folks.
>
>Anyone have the specs for HP 10811-60105 OCXO?It is not listed in the
>Mejia-Norton document. It was supposedly removed from a 5245.
>
>I'm also looking for a schematic for the aux board/assembly p/n 05245-60033,
>also supposed
Hi folks.
Anyone have the specs for HP 10811-60105 OCXO?It is not listed in the
Mejia-Norton document. It was supposedly removed from a 5245.
I'm also looking for a schematic for the aux board/assembly p/n 05245-60033,
also supposedly from a 5245. It has a rectifier, video amp and de
Hello,
A bit out of topic... but I've a HP 5334A with standard timebase, and I
would like to upgrade it with a 10811 I'have. Unfortunately, I don't
have the service manual for this counter, and I've seen that it needs a
small board for mounting the OCXO. Anyone has the service manual for
this
Hejsan Flemming,
The old timebase was a TCXO on a small board sitting in the same slot,
where the OCXO now is. Its an 5342A Microwave Counter. Not really
perfect for high resolution 10MHz work. I do have manuals for the
5342A and the old 5328A - should anyone need information about above
models.
Hej Bjorn,
Which model HP counter are you upgrading?
In some models it is necessary to disable the
standard timebase, when upgrading to an option 010
OCXO.
-- Flemming Larsen
--- Bjorn Gabrielsson <[EMAIL PROTECTED]> wrote:
> Works perfectly. Wonder what the 25 year old counter
> thinks ab
"Tom Van Baak" <[EMAIL PROTECTED]> writes:
> > Is it a problem to put a 10811 in a HP counter supposed
> > to use the older 10544A?
>
> No problem. It will work correctly. The 10811
> was designed to be backwards compatible
> with instruments designed for the 105444.
>
> What you usually can't d
> Is it a problem to put a 10811 in a HP counter supposed
> to use the older 10544A?
No problem. It will work correctly. The 10811
was designed to be backwards compatible
with instruments designed for the 105444.
What you usually can't do it put a 10544 in
a counter expecting a 10811.
/tvb
__
Bjorn Gabrielsson wrote:
>Is it a problem to put a 10811 in a HP counter supposed to use the
>older 10544A?
>
>--
>Björn
>
>
The pinouts of the two units aren't quite identical, but are pretty
similar and it's possible to retrofit the 10811A as you suggest. I
don't have the details at the t
Is it a problem to put a 10811 in a HP counter supposed to use the
older 10544A?
--
Björn
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