[time-nuts] HP-5065a bought and finally working!
Edgardo Molina
xe1xus at amsat.org
Fri Aug 24 20:01:38 UTC 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
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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
>>
>>
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