[time-nuts] time-nuts Digest, Vol 79, Issue 43
Jerry
jreed123 at cox.net
Sat Feb 12 17:58:12 UTC 2011
For the T-bolt power supply I am using the Mean Well. Model: T-30B
wich I bought out of China for about $45 shipped. It is a switching
supply but seems to be doing the job. As I remember I bought it from
fluke.i
Jerry
On Thu, Feb 10, 2011 at 6:33 PM, <time-nuts-request at febo.com> wrote:
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> Today's Topics:
>
> 1. Re: HP 5372A vs. 5370A: Thanks (Bob Camp)
> 2. Re: HP 5372A vs. 5370A: Thanks (Pete Lancashire)
> 3. Re: HP 5370A temp (gonzo .)
> 4. Thunderbolt Supply (Larry McDavid)
> 5. Re: Thunderbolt Supply (J. L. Trantham)
> 6. Re: Thunderbolt Supply (Larry McDavid)
> 7. Re: Thunderbolt Supply (Tim Tuck)
> 8. Re: HP 5372A vs. 5370A (Bob Camp)
> 9. Re: Thunderbolt Supply (Bob Camp)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 10 Feb 2011 16:44:53 -0500
> From: "Bob Camp" <lists at rtty.us>
> Subject: Re: [time-nuts] HP 5372A vs. 5370A: Thanks
> To: "'Discussion of precise time and frequency measurement'"
> <time-nuts at febo.com>
> Message-ID: <D434C935ABE0487581B3D2D0BB22769F at vectron.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Hi
>
> On a variety of levels, yes, the 5370 is the box to get first (and maybe
> second and third).
>
> Checking power supplies and cleaning contacts goes a long way on a 5370. Who
> knows what to do on a 5371 or 5372. Just finding the service manuals on them
> is no easy task (yes, I have a copy, not looking for another).
>
> Bob
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Pete Lancashire
> Sent: Thursday, February 10, 2011 4:24 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] HP 5372A vs. 5370A: Thanks
>
> I second that 1000%
>
> Now to figure out whats wrong in the two dead 5370Bs. Glad it is them
> and not the 72A !
>
> On Thu, Feb 10, 2011 at 1:11 PM, Bert, VE2ZAZ <ve2zaz at yahoo.ca> wrote:
>> To All who have contributed,
>>
>> Your answers have been very informative, and I appreciate the time the
> people
>> have taken to answer my initial request on the differences between the HP
> 5372A
>> and 5370A T.I. Counters/Analyzers.
>>
>> The bottom line I get out of this thread is that both are useful to own,
> with
>> one having a better raw resolution, but the other doing continuous
> measurements.
>> The 5370A is probably the one to own if you can only afford one piece of
> HP T.I.
>> equipment and you do GPIB interfacing.
>>
>> Thanks,
>>
>> Bert.
>>
>>
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
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> _______________________________________________
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>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 10 Feb 2011 13:59:58 -0800
> From: Pete Lancashire <pete at petelancashire.com>
> Subject: Re: [time-nuts] HP 5372A vs. 5370A: Thanks
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Message-ID:
> <AANLkTikQTJXHTgDUrKORbzmKgKA4uV8hyA9b8Of=ueuj at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> I ended up with the 5372A first one of those $50 and forget bids on
> the E. the $140 shipping is another story.
>
>
> BTW took the bottom of one of the 5370B and about 4 or 5 dehydrated
> spiders and other insect remains fell
> out. The smell is mouse urine but there is no evidence of mice. The
> dog finally gave up trying to 'kill' the
> 5370B. My guess is what ever was on top of it is the item you don't want to buy.
>
> -pete
>
> On Thu, Feb 10, 2011 at 1:44 PM, Bob Camp <lists at rtty.us> wrote:
>> Hi
>>
>> On a variety of levels, yes, the 5370 is the box to get first (and maybe
>> second and third).
>>
>> Checking power supplies and cleaning contacts goes a long way on a 5370. Who
>> knows what to do on a 5371 or 5372. Just finding the service manuals on them
>> is no easy task (yes, I have a copy, not looking for another).
>>
>> Bob
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Pete Lancashire
>> Sent: Thursday, February 10, 2011 4:24 PM
>> To: Discussion of precise time and frequency measurement
>> Subject: Re: [time-nuts] HP 5372A vs. 5370A: Thanks
>>
>> I second that 1000%
>>
>> Now to figure out whats wrong in the two dead 5370Bs. Glad it is them
>> and not the 72A !
>>
>> On Thu, Feb 10, 2011 at 1:11 PM, Bert, VE2ZAZ <ve2zaz at yahoo.ca> wrote:
>>> To All who have contributed,
>>>
>>> Your answers have been very informative, and I appreciate the time the
>> people
>>> have taken to answer my initial request on the differences between the HP
>> 5372A
>>> and 5370A T.I. Counters/Analyzers.
>>>
>>> The bottom line I get out of this thread is that both are useful to own,
>> with
>>> one having a better raw resolution, but the other doing continuous
>> measurements.
>>> The 5370A is probably the one to own if you can only afford one piece of
>> HP T.I.
>>> equipment and you do GPIB interfacing.
>>>
>>> Thanks,
>>>
>>> Bert.
>>>
>>>
>>>
>>> _______________________________________________
>>> 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.
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>>
>> _______________________________________________
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>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 10 Feb 2011 22:49:02 +0000
> From: "gonzo ." <cadbloke at hotmail.com>
> Subject: Re: [time-nuts] HP 5370A temp
> To: time-nuts <time-nuts at febo.com>
> Message-ID: <COL124-W14ABF21574E751F8C68B10C6EC0 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> Good point Bob.
> I was planning to fit a 'like for like' replacement, but there is no need to do so
> A modern 2.2W 12V fan performs to the same spec as the original 15W 115V fan.
> (PAPST 8312 vs PAPST 8500d)
>
> cheers,
> Ian
>
>
>
>> From: Bob Bownes <bownes at gmail.com>
>> Subject: Re: [time-nuts] time-nuts Digest, Vol 79, Issue 31
>> To: Discussion of precise time and frequency measurement
>> <time-nuts at febo.com>
>> Message-ID:
>> <AANLkTi=Mu-Xp1PVkT9swzJw2TikMw8fKe68jUwDR53gD at mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> Ian,
>>
>> I've dropped the temp and the noise level in my 'lab' by replacing
>> many of the old 110V fans whose bearings are getting on with more
>> modern 'silent' 12V fans that use less power, move more air, and are
>> far quieter than the 110 fans ever were. You can find them from a
>> number of sources online, and while rated at 12Vdc, they run pretty
>> well on anything from 5-15.
>>
>> Bob
>
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 10 Feb 2011 15:16:55 -0800
> From: Larry McDavid <lmcdavid at lmceng.com>
> Subject: [time-nuts] Thunderbolt Supply
> To: Timenuts <time-nuts at febo.com>
> Message-ID: <4D5471E7.4050109 at lmceng.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Greetings! I am a new member of the mail list. I've been using a HP
> Z3801A GPS-steered standard but have just acquired a Trimble Thunderbolt
> GPS Disciplined Clock.
>
> I'm seeking a recommendation for a power supply for this Thunderbolt
> receiver. There is much discussion about noise from some switching
> supplies and the effect on phase noise of the 10 MHz output. The
> Thunderbolt manual specifies the following supply and loads:
>
> +12 vdc 750 mA
> + 5 vdc 400 mA
> -12 vdc 10 mA
>
> This combination is somewhat unusual in that the highest current is on
> the 12 volt output rather than the 5 volt output. I'm asking if list
> members have a favorite power supply for this unit, why and where I can
> obtain one.
>
> --
> Best wishes,
>
> Larry McDavid W6FUB
> Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland)
>
>
>
> ------------------------------
>
> Message: 5
> Date: Thu, 10 Feb 2011 17:32:22 -0600
> From: "J. L. Trantham" <jltran at att.net>
> Subject: Re: [time-nuts] Thunderbolt Supply
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Message-ID: <HDEFLGKACIEOIBFFBEHPOEEFDBAA.jltran at att.net>
> Content-Type: text/plain; charset="us-ascii"
>
> Larry,
>
> I favor a linear regulated supply rather than a switching supply. I had a
> TBolt die while connected to a switching supply in an environment where
> there were frequent power outages.
>
> The +12 VDC current drops significantly after the OCXO warms up, probably
> down to about 200 mA or so.
>
> Good luck. They are neat little devices.
>
> Joe
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Larry McDavid
> Sent: Thursday, February 10, 2011 5:17 PM
> To: Timenuts
> Subject: [time-nuts] Thunderbolt Supply
>
> Greetings! I am a new member of the mail list. I've been using a HP
> Z3801A GPS-steered standard but have just acquired a Trimble Thunderbolt
> GPS Disciplined Clock.
>
> I'm seeking a recommendation for a power supply for this Thunderbolt
> receiver. There is much discussion about noise from some switching
> supplies and the effect on phase noise of the 10 MHz output. The
> Thunderbolt manual specifies the following supply and loads:
>
> +12 vdc 750 mA
> + 5 vdc 400 mA
> -12 vdc 10 mA
>
> This combination is somewhat unusual in that the highest current is on
> the 12 volt output rather than the 5 volt output. I'm asking if list
> members have a favorite power supply for this unit, why and where I can
> obtain one.
>
> --
> Best wishes,
>
> Larry McDavid W6FUB
> Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland)
>
> _______________________________________________
> 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.
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
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>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Thu, 10 Feb 2011 15:46:05 -0800
> From: Larry McDavid <lmcdavid at lmceng.com>
> Subject: Re: [time-nuts] Thunderbolt Supply
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Message-ID: <4D5478BD.20809 at lmceng.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Certainly, I'd prefer a linear 3-output supply. But, I've not found a
> suitable one yet, in linear or switching. TAPR offered one in the past
> but has no more. So, I'm asking for recommendations and where to get one.
>
> Larry
>
>
> On 2/10/2011 3:32 PM, J. L. Trantham wrote:
>> I favor a linear regulated supply rather than a switching supply. I had a
>> TBolt die while connected to a switching supply in an environment where
>> there were frequent power outages.
> ...
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
>> Behalf Of Larry McDavid
> ...
>> I'm seeking a recommendation for a power supply for this Thunderbolt
>> receiver. There is much discussion about noise from some switching
>> supplies and the effect on phase noise of the 10 MHz output. The
>> Thunderbolt manual specifies the following supply and loads:
>>
>> +12 vdc 750 mA
>> + 5 vdc 400 mA
>> -12 vdc 10 mA
>>
>> This combination is somewhat unusual in that the highest current is on
>> the 12 volt output rather than the 5 volt output. I'm asking if list
>> members have a favorite power supply for this unit, why and where I can
>> obtain one.
> ...
> --
> Best wishes,
>
> Larry McDavid W6FUB
> Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland)
>
>
>
> ------------------------------
>
> Message: 7
> Date: Fri, 11 Feb 2011 12:22:42 +1100
> From: Tim Tuck <timt at skybase.net>
> Subject: Re: [time-nuts] Thunderbolt Supply
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Message-ID: <4D548F62.7090709 at skybase.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi Larry,
>
> I use a linear supply for mine.
>
> My supply is actually a headphone amp supply kit from JayCar Electronics
> here in Australia. Its basically two LM317's and a 7805 for 5v. I
> changed the resistor that set the output voltage from 15v to 12v and
> also selected an appropriate toroid transformer to suit.
>
> Links here....
>
> http://www.jaycar.com.au/productView.asp?ID=KC5418&CATID=25&form=CAT&SUBCATID=557
>
> http://www.jaycar.com.au/productView.asp?ID=MT2084&CATID=19&form=CAT&SUBCATID=539
>
> I dont know if you can get these kits in the US or if JayCar ship
> internationally, you'd have to ask.
>
> I'm sure you could find or build something similar state side :)
>
> regards
>
> Tim
>
>
> --
>
> VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT
>
>
>
>
> ------------------------------
>
> Message: 8
> Date: Thu, 10 Feb 2011 20:30:09 -0500
> From: "Bob Camp" <lists at rtty.us>
> Subject: Re: [time-nuts] HP 5372A vs. 5370A
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Message-ID: <D51DEEA9741C4D07AF1A0E3B14BB6655 at hm.clpa.com>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Hi
>
> HP 5371A 2828 dated 08 July 1988
>
> Put another way, no it does not have the free update from ~ 1991. I wonder
> if HP will drop by and put it in mine ....I have a strong suspicion the
> answer is no.
>
> Bob
>
> -----Original Message-----
> From: Poul-Henning Kamp
> Sent: Thursday, February 10, 2011 8:04 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] HP 5372A vs. 5370A
>
> In message <539FB2CD-A764-4825-8932-970D4253B9E2 at rtty.us>, Bob Camp writes:
>
>>The 5371 / 5372 are never going to be as popular as the 5370 in
>>terms of people needing support. They just aren't that common.
>>
>>Getting binary dumps into one of the software packages would be
>>very nice. The rest of the stuff is much further down my list.
>>Without a binary dump, you can't do anything that runs over a long
>>period of time. I'm not sure what HP really wanted you to do in
>>that case. They may have planed a PC software package and then not
> followed through with it.
>
> My guess: The realized that GPIB was to slow for much of that, and
> decided to the that stuff on the VXI bus instead...
>
> But that reminds me: do we even know how many different software
> versions there were for these beasts ?
>
> Which software versions do people have on their HP537[123]A ?
>
> My HP5372A is 2947 (08 Dec 1989)
>
> --
> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG | TCP/IP since RFC 956
> FreeBSD committer | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
>
> _______________________________________________
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> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
>
>
>
> ------------------------------
>
> Message: 9
> Date: Thu, 10 Feb 2011 20:33:31 -0500
> From: "Bob Camp" <lists at rtty.us>
> Subject: Re: [time-nuts] Thunderbolt Supply
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Message-ID: <7B7E6CF020EF4E148638C66C157DDE56 at hm.clpa.com>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Hi
>
> I have so many of them that I run them off big lab grade linear supplies.
> That's not to good for a single unit.
>
> The neatest way is to run some low drop out linear regulators off of a
> switcher. That way you get it all. The tolerances on the supplies are such
> that an LDO with a hundred mv dropout works with a +/- 12 volt +5 volt
> switcher.
>
> Bob
>
>
> -----Original Message-----
> From: Larry McDavid
> Sent: Thursday, February 10, 2011 6:46 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Thunderbolt Supply
>
> Certainly, I'd prefer a linear 3-output supply. But, I've not found a
> suitable one yet, in linear or switching. TAPR offered one in the past
> but has no more. So, I'm asking for recommendations and where to get one.
>
> Larry
>
>
> On 2/10/2011 3:32 PM, J. L. Trantham wrote:
>> I favor a linear regulated supply rather than a switching supply. I had a
>> TBolt die while connected to a switching supply in an environment where
>> there were frequent power outages.
> ...
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
>> Behalf Of Larry McDavid
> ...
>> I'm seeking a recommendation for a power supply for this Thunderbolt
>> receiver. There is much discussion about noise from some switching
>> supplies and the effect on phase noise of the 10 MHz output. The
>> Thunderbolt manual specifies the following supply and loads:
>>
>> +12 vdc 750 mA
>> + 5 vdc 400 mA
>> -12 vdc 10 mA
>>
>> This combination is somewhat unusual in that the highest current is on
>> the 12 volt output rather than the 5 volt output. I'm asking if list
>> members have a favorite power supply for this unit, why and where I can
>> obtain one.
> ...
> --
> Best wishes,
>
> Larry McDavid W6FUB
> Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland)
>
> _______________________________________________
> 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
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>
> End of time-nuts Digest, Vol 79, Issue 43
> *****************************************
>
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