[time-nuts] TM 500 extender board en HP 5370 extender boards

Claude Houde va2hdd at aei.ca
Sat Aug 16 01:54:53 UTC 2014


Hello !

Please count me in also for two sets of TM 500 extenders and one HP 5370 
board set.

Please contact me off list at : va2hdd (at) amsat.org when you can, no 
rush, I have one question about this project.

Thank you,

Claude Houde VA2 HDD



  Le 2014-08-15 12:00, time-nuts-request at febo.com a écrit :
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> Today's Topics:
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>     1. Re: HP5370 extender cards? (paul swed)
>     2. HP5370 extender cards? (Mark Sims)
>
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Thu, 14 Aug 2014 19:47:05 -0400
> From: paul swed<paulswedb at gmail.com>
> To: Discussion of precise time and frequency measurement
> 	<time-nuts at febo.com>
> Subject: Re: [time-nuts] HP5370 extender cards?
> Message-ID:
> 	<CAD2JfAgjKngTYki4kAhvgj6g2HtgNndgn69FjeGN24K0x2b-NA at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Let me know when things settle. Most likely will want a set.
> Regards
> Paul
> WB8TSL
>
>
> On Thu, Aug 14, 2014 at 12:12 PM, Mark Sims<holrum at hotmail.com>  wrote:
>
>> It usually takes 2-3 weeks to get boards back once sent to the fab (in
>> China).  Supposedly the boards that I am having them do for another project
>> should be here today and I can verify their quality.
>>
>> I also laid out a 20 pin extender to connect the input board to the front
>> panel,  but I don't think those would be too useful.  You can extend the
>> other side of the input board/front panel using a 36 pin extender.
>>
>> A while back I had the idea of doing a replacement board for the custom HP
>> input comparator chips that fry is you overload the 5370 inputs.  Need to
>> start looking at what that would take...  there are two different versions
>> of that chip/input board.  The replacement could be for just the chip or
>> the complete input board.
>>
>> --------------
>>
>>> Approx how long should they be ready to ship after you decide to proceed
>> with the order?
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> ------------------------------
>
> Message: 2
> Date: Fri, 15 Aug 2014 01:06:25 +0000
> From: Mark Sims<holrum at hotmail.com>
> To: "time-nuts at febo.com"<time-nuts at febo.com>
> Subject: [time-nuts] HP5370 extender cards?
> Message-ID:<BLU170-W175163F4A81BAA20C4BA18CEE90 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Yes,  can ship world wide.  Not sure what the postage will be,  but should not be too bad.
>
> I'm leaning towards a 3 card set as the standard.  Two of the 36 pin extenders and one of the 44 pin.  There are a couple of other misc boards in the machine with different pin counts (oscillator,  oscillator power,  oscillator buffer) but those three should be able to handle most of the work.   If you really needed to extend the 30 pin oscillator or buffer cards,  you could hack up a 36 pin card.
>
> I got my other projects' boards in from China today.  They look good.  Now to get the TM500 and 5370 boards on order. 		 	   		
>
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