[time-nuts] HP-5065a bought and finally working!
paul swed
paulswedb at gmail.com
Thu Aug 23 01:12:24 UTC 2012
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
>
>
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