[time-nuts] HP-5065a bought and finally working!

Edgardo Molina xe1xus at amsat.org
Fri Aug 24 16:01:38 EDT 2012


Dear Paul,

Thank you for sharing your comments with me. I am back from a business trip and found lots of answers to my concerns. The instrument continues in the "green" with voltage indication within limits. You are right. After valuing the 5065a, I rather play with the cheap Rbs. 

Take care and enjoy the weekend.

Regards,



Edgardo Molina
Dirección IPTEL

www.iptel.net.mx

T : 55 55 55202444
M : 04455 20501854

Piensa en Bits SA de CV



Información anexa:




CONFIDENCIALIDAD DE INFORMACION

Este mensaje tiene carácter confidencial. Si usted no es el destinarario de este mensaje, le suplicamos se lo notifique al remitente mediante un correo electrónico y que borre el presente mensaje y sus anexos de su computadora sin retener una copia de los mismos. Queda estrictamente prohibido copiar este mensaje o hacer usode el para cualquier propósito o divulgar su en forma parcial o total su contenido. Gracias.


NON-DISCLOSURE OF INFORMATION

This email is strictly confidential and may also be privileged. If you are not the intended recipient please immediately advise the sender by replying to this e-mail and then deleting the message and its attachments from your computer without keeping a copy. It is strictly forbidden to copy it or use it for any purpose or disclose its contents to any third party. Thank you.





On Aug 22, 2012, at 8:12 PM, paul swed <paulswedb at gmail.com> wrote:

> Edgardo congratulations. The 5065 is a really nice unit. I have one also
> but earlier and luckily my manuals are on the internet.
> It could be disciplined but the fact is for me at least I do not want to.
> Leave a great device as is. There are lots of cheap RBs around and even
> nice oscillators that can be disciplined.
> Hack those and leave 5065 clean and complete it will serve you very well.
> Good luck.
> Regards
> Paul.
> 
> On Wed, Aug 22, 2012 at 5:18 PM, <EWKehren at aol.com> wrote:
> 
>> You can discipline a HP 5065A easily using a Shera with the  Tbolt  1 PPS
>> and a LTC 1655 DAC in stead of an AD 1861.
>> Bert Kehren.
>> 
>> 
>> In a message dated 8/22/2012 8:23:06 A.M. Eastern Daylight Time,
>> jltran at att.net writes:
>> 
>> Edgardo,
>> 
>> Congrats on getting the 5065A up and  operational.  Make sure the A11 Board
>> (Temperature Controller) is all  OK.  Failure there can destroy the A12
>> RVFR
>> Assembly.  There is a  lot of 'expertise' on the list for this unit.
>> 
>> What is the serial number  of your unit and what is the part number of the
>> manual you have?
>> 
>> I  have a couple of manuals and I may also have the 'change sheets'  that
>> updates the manual to your serial number.  It may take me a while  to chase
>> that down but if I have the 'change sheets', I can scan them and  send them
>> to you.
>> 
>> I have not heard of anyone 'disciplining' the  5065A by GPS, other than by
>> hand from week to week.  However, the 105B  has a built in connection on
>> the
>> back that is great for that purpose  (negative slope, as I recall) and I
>> have
>> done that using a Brooks Shera  controller board and the 1 PPS from my
>> TBolt.
>> It works quite  well.
>> 
>> Joe
>> 
>> -----Original Message-----
>> From:  time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of  Edgardo Molina
>> Sent: Wednesday, August 22, 2012 12:22 AM
>> To:  time-nuts at febo.com
>> Subject: [time-nuts] HP-5065a bought and finally  working!
>> 
>> 
>> Dear Group,
>> 
>> I wish you well.
>> 
>> Do you recall a  message and thread about a month ago with my concerns
>> about
>> buying a used /  unknown condition HP-5065a rubidium frequency standard? I
>> bit the bullet  and bought it. Almost mint condition (cosmetically
>> speaking)
>> and with  several operational issues.
>> 
>> Well, It took me several weeks to put it  back to work. Several capacitors
>> on
>> several boards along with a couple of  transistors and an IC were replaced.
>> After that any being bored by the  yellow light, it finally came off to
>> allow
>> a beautiful green lock condition  light. I went through the necessary steps
>> to tune it and calibrate it. Now,  as I have been told recently. "You have
>> been bitten by the Time Nuts bug."  I am not complaining at all.
>> 
>> Now the technical issues if you kindly  allow:
>> 
>> a. Does anybody have an HP-5065a manual for the latest versions?  Mine
>> (which
>> I downloaded from the Internet) is intended for earlier  versions. It seems
>> I
>> have one of the last produced units. I would kindly  appreciate any help on
>> this and I am willing to pay for time and expenses  to anybody who could
>> help. During the repair process I found several  differences in the earlier
>> versions design and had to figure out hoy mine  works.
>> 
>> b. Is it possible to build a GPSDRb? I would like to know if it  is
>> reasonable to pursue the goal to discipline the 5065a with a TB which I
>> also
>> got recently.
>> 
>> c. I am waiting for the delivery of a recent  purchase. An HP-59309a
>> Digital
>> Clock to go with the HP 5065a. How I wish I  could find the optional LED
>> integrated optional clock and 1PPS output. Is  my purchase a good match for
>> the 5065a? Any other suggestions to drive a  clock?
>> 
>> d. I am waiting also for de delivery of an HP-105b mint  condition quartz
>> frequency standard. Would a second 59309a make sense to  use it with this
>> quartz standard? Or just saving it for a Cesium? Anybody  willing to sell a
>> spare, dust gathering, clean unit to me?
>> 
>> e. Any  suggestions for software of lab equipment to measure my experiments
>> like  AD, jitter, phase comparisons, etc?
>> 
>> 
>> While I wait I am doing some  experiments with a FE Rb standard to
>> discipline
>> an Adret synthesiser to  output 32.768 KHz to directly drive a Nixie clock
>> kit I just finished  building.
>> 
>> Your comments are surely welcome. Thank you!
>> 
>> Kind  regards,
>> 
>> 
>> Edgardo  Molina
>> XE1XUS
>> Mexico
>> 
>> 
>> _______________________________________________
>> time-nuts  mailing list -- time-nuts at febo.com
>> To unsubscribe, go  to
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow  the instructions  there.
>> 
>> 
>> _______________________________________________
>> time-nuts  mailing list -- time-nuts at febo.com
>> To unsubscribe, go to
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the  instructions there.
>> 
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.




More information about the time-nuts mailing list