[time-nuts] FS: HP 59309A

SAL CORNACCHIA salccor at rogers.com
Thu Oct 27 16:57:51 EDT 2011


Hi Don,

Thank You for the info, I do not have a manual, I will try a few things and see if it will wok out.

 

Best regards,
Sal C. Cornacchia
Electronic RF Microwave Engineer (Ret.)



________________________________
From: Don Latham <djl at montana.com>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Thursday, October 27, 2011 3:19:52 PM
Subject: Re: [time-nuts] FS: HP 59309A

Sal: I had my manual out to see what I had done. I think Francis refers
to C2, 100 pf on Time Assembly A4. hmmm. Might be susceptible to noise,
dunno. Note that there are four inverter/buffer sections on U7
available.I have not tried this mod personally; I think I would use an
internal buffer section or two here. The older CMOS could be touchy.
Don

SAL CORNACCHIA
> Hi Francis,
>  
> Thank You for the advise, do you remember which capacitor to disconnect.
>  
> Best regards,
> Sal C. Cornacchia
>
>
>
>
> ________________________________
> From: Francis Grosz <fgrosz at otiengineering.com>
> To: time-nuts at febo.com
> Sent: Thursday, October 27, 2011 11:37:01 AM
> Subject: Re: [time-nuts] FS: HP 59309A
>
> Sal,
>
>     It's also a relatively simple mod to rearrange things in the 59309A 
> to accept the 1 pps input from a GPSDO.  I no longer have my unit for
> the exact reference, but it simply involved lifting one side of a
> capacitor and connecting it to the external DC BNC on the back.  Feed in
> the 1 pps, set the clock, and you're good.
>
>                   Francis
>
> -----------------------------------------------------------------------
> From: SAL CORNACCHIA <salccor at rogers.com>
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Subject: Re: [time-nuts] FS: HP 59309A
>
> Hi Don,
> ?
> Can You share with me and the group on making the 10 MHz input adapital.
> ?
> Thank You
> ?
> Best regards,
> Sal C. Cornacchia
> Electronic RF Microwave Engineer (Ret.)
>
>
>
> ________________________________
> From: Don Latham <djl at montana.com>
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Sent: Wednesday, October 26, 2011 12:07:48 AM
> Subject: Re: [time-nuts] FS: HP 59309A
>
> in addition, they are? readily adaptible to 10 MHz input using the
> external power bnc and a cmos decimal counter chip.
> Don
>
> J. Forster
>> A look at the manual implies that it can be switch set for 365 or 366
>> days.
>>
>> A nice unit, but I've already got one.
>>
>> Best,
>>
>> -John
>>
>> ==========-
>>
>>
>>> Hello Everyone,
>>>
>>> Currently only for the Time-Nuts, I have an HP59309A HP-IB Digital
>>> Clock
>>> for sale. This one has Option H04, otherwise known as Option 001,
>>> which
>>> offers a Julian Calendar (0-366 day-of-year indication) instead of
>>> the
>>> regular Month/Day.
>>>
>>> The unit is functional, clean and in quite good shape, with the
>>> expected
>>> light scratches and blemishes on the top/bottom/sides typical of a
>>> used
>>> unit. The front is pretty clean. Price is $90 + shipping. Please
>>> contact
>>> me directly.
>>>
>>>
>>> Thanks,
>>>
>>> Bert, VE2ZAZ
>>> _______________________________________________
>>> time-nuts mailing list -- time-nuts at febo.com
>>> To unsubscribe, go to
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>>> and follow the instructions there.
>>>
>>>
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-- 
"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet to the mind."
R. Bacon
"If you don't know what it is, don't poke it."
Ghost in the Shell


Dr. Don LathamAJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com



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