[time-nuts] A Lady H mystery

[Mark Sims]

I don't think Heather v5.0 ever worked with the ACE-III.  Heather uses the TSIP 
primary and secondary timing messages to drive the display.  The ACE-III (and 
SV6) don't output those messages.   The next release of Heather has SV6 support 
and also supports the Trimble TAIP protocol that these receivers can also 
support.

Those receivers can also speak NMEA... perhaps your receiver had been 
configured for NMEA until the power blew?
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Re: [time-nuts] A Lady H mystery

[Jerry Hancock]

polarized tantalum in correctly?

Regards,

Jerry

> On Dec 19, 2017, at 2:20 PM, Dan Rae  wrote:
> 
> I've been trying to get LH (V5) to control and set position for the GPS board 
> in one of my GPSDOs.  It is a Trimble "Lassen Ace III" Rx according to 
> itself.  LH auto detects it quickly enough, reports it as a TSIP receiver but 
> then shows a screen saying "LOG: OFF", a blank graph grid and nothing much 
> else.  No data apparently, so how did it autodetect?
> 
> I've been beating my head against this for two days; it used to work fine but 
> since a tantalum went on the TTL to RS232 convertor (since replaced along 
> with the receiver itself just in case) it won't perform for me.   LH performs 
> fine for all the other units here as it always has and the Trimble Monitor 
> program works on this one.
> 
> I'd really appreciate someone telling me gently what stupid thing I'm doing 
> or not doing :^)
> 
> Thanks,
> 
> Dan - ac6ao
> 
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Re: [time-nuts] A Lady H mystery

[Vlad]

I had similar symptoms with LH and T-Bolt. The cause was the serial 
port. As I change the serial port HW on computer site - T-Bolt was back 
to track.
it was interesting enough that other devices was OK with initial Serial 
port HW.



On 2017-12-19 17:20, Dan Rae wrote:

I've been trying to get LH (V5) to control and set position for the
GPS board in one of my GPSDOs.  It is a Trimble "Lassen Ace III" Rx
according to itself.  LH auto detects it quickly enough, reports it
as a TSIP receiver but then shows a screen saying "LOG: OFF", a blank
graph grid and nothing much else.  No data apparently, so how did it
autodetect?

I've been beating my head against this for two days; it used to work
fine but since a tantalum went on the TTL to RS232 convertor (since
replaced along with the receiver itself just in case) it won't perform
for me.   LH performs fine for all the other units here as it always
has and the Trimble Monitor program works on this one.

I'd really appreciate someone telling me gently what stupid thing I'm
doing or not doing :^)

Thanks,

Dan - ac6ao

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and follow the instructions there.


--
WBW,

V.P.
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[time-nuts] A Lady H mystery

[Dan Rae]

I've been trying to get LH (V5) to control and set position for the GPS 
board in one of my GPSDOs.  It is a Trimble "Lassen Ace III" Rx 
according to itself.  LH auto detects it quickly enough, reports it as a 
TSIP receiver but then shows a screen saying "LOG: OFF", a blank graph 
grid and nothing much else.  No data apparently, so how did it autodetect?


I've been beating my head against this for two days; it used to work 
fine but since a tantalum went on the TTL to RS232 convertor (since 
replaced along with the receiver itself just in case) it won't perform 
for me.   LH performs fine for all the other units here as it always has 
and the Trimble Monitor program works on this one.


I'd really appreciate someone telling me gently what stupid thing I'm 
doing or not doing :^)


Thanks,

Dan - ac6ao

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Re: [time-nuts] External cooling fans - source

[Van Horn, David]

In the US, I have seen line voltage as low as 70VAC and as high as 145VAC. 
That's what I design to.
The power companies say different, but my meters don't lie.


-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Jeremy Nichols
Sent: Tuesday, December 19, 2017 9:20 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] External cooling fans - source

I put a small external fan on my 5370B, which keeps the heat sink at a 
reasonable low temperature (Time-Nut content) -but- (Nixon segué) the power 
company here also runs the voltage all the way up to the limit (126VAC) because 
"many of our [rural, like me] customers are all-electric and the load tends to 
pull the voltage down during times of peak use." The voltage got so high I 
finally put a recorder on it and walked the results into their office. In 
response, they attached their recorder to my connection and ran it for a couple 
of weeks before agreeing with me. Then they reluctantly turned the transformer 
down a notch so we stay below 126VAC now.

Jeremy

On Tue, Dec 19, 2017 at 5:44 AM Bob kb8tq  wrote:

> Hi
>
> Yes, this *is* a bit off topic. Sorry about that … I’m sure it’ll 
> never / ever happen again :) …. ummm …. today ….
>
> The voltage that supply feeds are set to is as much a public relations 
> issue as a technical one. People would routinely complain “the lights 
> are to dim”.
> Voltage
> gets bumped up. Complaints drop off. Eventually you are right at (or 
> as you observe marginally above) the max limits. Since the power 
> company is paid by the watt, the added power usage (if any) is not a 
> big deal. The call outs for checks
> *are* a big
> deal to them ….. complaints impact the metrics by which they are judged ….
>
> Bob
>
> > On Dec 19, 2017, at 12:48 AM, Dr. David Kirkby <
> drkir...@kirkbymicrowave.co.uk> wrote:
> >
> > On 18 December 2017 at 23:11, Charles Steinmetz 
> > 
> > wrote:
> >
> >> From time to time, the subject of external cooling fans comes up -- 
> >> for example, in discussions of the HP 5370A/B with their steaming 
> >> hot heatsinks.  I have several times recommended very quiet, all-metal, 4"
> desk
> >> fans as ideal for the job, but have not been able to suggest a source.
> >>
> >
> > For what it is worth, my 5370B run very hot, which forced me to 
> > check my mains voltage as I knew every time I had done a quick 
> > measurement, the voltage was above 230 V. So for a few days I logged 
> > the voltage, and
> found
> > it was consistently high. The maximum permitted here in the UK is 
> > 253 V, but I measured mine at 255.x volts. It was the heat of the 
> > 5370B that forced me to contact the electricity supply company (UK 
> > Power Networks), who logged the voltage for 4 days. I have a 3-phase 
> > supply here, which is unusual for a domestic property, but each of 
> > the 3 phases was
> consistently
> > high. I managed to get the supply company to reduce the voltage by 5%.
> That
> > made a *significant* difference in the heatsink temperature of the 
> > 5370B, and a significant difference to to the exhaust temperature of 
> > my HP 7 series system.
> >
> > I'm not saying an extra fan is not a good idea, but it is certainly 
> > worth ensuring the mains voltage is not too high. I was told by UK 
> > Power
> Networks
> > that they aim for 245-250 V in rural areas - this is despite the UK 
> > is supposed to be 230 -6%/+10%. On equipment with linear power 
> > supplies, a
> few
> > extra volts can lead to a significant increase in the amount of heat 
> > the regulators produce. 10% extra voltage does *not* equate to 10% 
> > extra
> power
> > dissipation, but considerably more.
> >
> > I found quite a reluctance on the part of the UK Power Networks to 
> > reduce the voltage. Even though it was was on average more than 5% 
> > high, the technical manager who took ownership of the problem only 
> > wanted to reduce the voltage by 2.5%, despite they could easily 
> > reduce it 5%. Luckily,
> when
> > the engineers came to adjust the supply voltage, (which they do by
> changing
> > the taps on the 11 kV primary), I managed to convince them that 
> > there
> were
> > very few properties on the transformer, and the furthest was an old
> couple
> > that used very little electricity. So they did reduce it 5%, which 
> > is the maximum they could. But they warned me that if there were 
> > complaints of
> low
> > voltage, they would have to increase it 2.5%. Luckily for me, nobody 
> > locally noticed the reduction in mains voltage, and it is still on
> average
> > over 230 V.
> >
> > It would be interesting to know how low the AC input can go on a 
> > 5370B before the regulators fail to regulate. Given they are the 
> > sort of instrument one might want to run for long periods, running 
> > one on a UPS, with a transformer to reduce the output of the UPS, 
> > might not be such a
> bad
> > idea.
> >

Re: [time-nuts] External cooling fans - source

[Jeremy Nichols]

I put a small external fan on my 5370B, which keeps the heat sink at a
reasonable low temperature (Time-Nut content) -but- (Nixon segué) the power
company here also runs the voltage all the way up to the limit (126VAC)
because "many of our [rural, like me] customers are all-electric and the
load tends to pull the voltage down during times of peak use." The voltage
got so high I finally put a recorder on it and walked the results into
their office. In response, they attached their recorder to my connection
and ran it for a couple of weeks before agreeing with me. Then they
reluctantly turned the transformer down a notch so we stay below 126VAC now.

Jeremy

On Tue, Dec 19, 2017 at 5:44 AM Bob kb8tq  wrote:

> Hi
>
> Yes, this *is* a bit off topic. Sorry about that … I’m sure it’ll never /
> ever happen
> again :) …. ummm …. today ….
>
> The voltage that supply feeds are set to is as much a public relations
> issue as a
> technical one. People would routinely complain “the lights are to dim”.
> Voltage
> gets bumped up. Complaints drop off. Eventually you are right at (or as
> you observe
> marginally above) the max limits. Since the power company is paid by the
> watt, the
> added power usage (if any) is not a big deal. The call outs for checks
> *are* a big
> deal to them ….. complaints impact the metrics by which they are judged ….
>
> Bob
>
> > On Dec 19, 2017, at 12:48 AM, Dr. David Kirkby <
> drkir...@kirkbymicrowave.co.uk> wrote:
> >
> > On 18 December 2017 at 23:11, Charles Steinmetz 
> > wrote:
> >
> >> From time to time, the subject of external cooling fans comes up -- for
> >> example, in discussions of the HP 5370A/B with their steaming hot
> >> heatsinks.  I have several times recommended very quiet, all-metal, 4"
> desk
> >> fans as ideal for the job, but have not been able to suggest a source.
> >>
> >
> > For what it is worth, my 5370B run very hot, which forced me to check my
> > mains voltage as I knew every time I had done a quick measurement, the
> > voltage was above 230 V. So for a few days I logged the voltage, and
> found
> > it was consistently high. The maximum permitted here in the UK is 253 V,
> > but I measured mine at 255.x volts. It was the heat of the 5370B that
> > forced me to contact the electricity supply company (UK Power Networks),
> > who logged the voltage for 4 days. I have a 3-phase supply here, which is
> > unusual for a domestic property, but each of the 3 phases was
> consistently
> > high. I managed to get the supply company to reduce the voltage by 5%.
> That
> > made a *significant* difference in the heatsink temperature of the 5370B,
> > and a significant difference to to the exhaust temperature of my HP 7
> > series system.
> >
> > I'm not saying an extra fan is not a good idea, but it is certainly worth
> > ensuring the mains voltage is not too high. I was told by UK Power
> Networks
> > that they aim for 245-250 V in rural areas - this is despite the UK is
> > supposed to be 230 -6%/+10%. On equipment with linear power supplies, a
> few
> > extra volts can lead to a significant increase in the amount of heat the
> > regulators produce. 10% extra voltage does *not* equate to 10% extra
> power
> > dissipation, but considerably more.
> >
> > I found quite a reluctance on the part of the UK Power Networks to reduce
> > the voltage. Even though it was was on average more than 5% high, the
> > technical manager who took ownership of the problem only wanted to reduce
> > the voltage by 2.5%, despite they could easily reduce it 5%. Luckily,
> when
> > the engineers came to adjust the supply voltage, (which they do by
> changing
> > the taps on the 11 kV primary), I managed to convince them that there
> were
> > very few properties on the transformer, and the furthest was an old
> couple
> > that used very little electricity. So they did reduce it 5%, which is the
> > maximum they could. But they warned me that if there were complaints of
> low
> > voltage, they would have to increase it 2.5%. Luckily for me, nobody
> > locally noticed the reduction in mains voltage, and it is still on
> average
> > over 230 V.
> >
> > It would be interesting to know how low the AC input can go on a 5370B
> > before the regulators fail to regulate. Given they are the sort of
> > instrument one might want to run for long periods, running one on a UPS,
> > with a transformer to reduce the output of the UPS, might not be such a
> bad
> > idea.
> >
> >
> >> Charles
> >>
> >
> > Dave
> > ___
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> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
>
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>
-- 
Sent from my iPad 4.

[time-nuts] TICC counters available again

[John Ackermann N8UR]

TAPR sold out the first run of TICC timestamping counters but we just 
took delivery of a second batch, and we're now taking orders.  See 
http://tapr.org/kits_ticc for details.



John

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Re: [time-nuts] External cooling fans - source

[Bob kb8tq]

Hi

Yes, this *is* a bit off topic. Sorry about that … I’m sure it’ll never / ever 
happen 
again :) …. ummm …. today ….

The voltage that supply feeds are set to is as much a public relations issue as 
a 
technical one. People would routinely complain “the lights are to dim”. Voltage
gets bumped up. Complaints drop off. Eventually you are right at (or as you 
observe 
marginally above) the max limits. Since the power company is paid by the watt, 
the
added power usage (if any) is not a big deal. The call outs for checks *are* a 
big
deal to them ….. complaints impact the metrics by which they are judged ….

Bob

> On Dec 19, 2017, at 12:48 AM, Dr. David Kirkby 
>  wrote:
> 
> On 18 December 2017 at 23:11, Charles Steinmetz 
> wrote:
> 
>> From time to time, the subject of external cooling fans comes up -- for
>> example, in discussions of the HP 5370A/B with their steaming hot
>> heatsinks.  I have several times recommended very quiet, all-metal, 4" desk
>> fans as ideal for the job, but have not been able to suggest a source.
>> 
> 
> For what it is worth, my 5370B run very hot, which forced me to check my
> mains voltage as I knew every time I had done a quick measurement, the
> voltage was above 230 V. So for a few days I logged the voltage, and found
> it was consistently high. The maximum permitted here in the UK is 253 V,
> but I measured mine at 255.x volts. It was the heat of the 5370B that
> forced me to contact the electricity supply company (UK Power Networks),
> who logged the voltage for 4 days. I have a 3-phase supply here, which is
> unusual for a domestic property, but each of the 3 phases was consistently
> high. I managed to get the supply company to reduce the voltage by 5%. That
> made a *significant* difference in the heatsink temperature of the 5370B,
> and a significant difference to to the exhaust temperature of my HP 7
> series system.
> 
> I'm not saying an extra fan is not a good idea, but it is certainly worth
> ensuring the mains voltage is not too high. I was told by UK Power Networks
> that they aim for 245-250 V in rural areas - this is despite the UK is
> supposed to be 230 -6%/+10%. On equipment with linear power supplies, a few
> extra volts can lead to a significant increase in the amount of heat the
> regulators produce. 10% extra voltage does *not* equate to 10% extra power
> dissipation, but considerably more.
> 
> I found quite a reluctance on the part of the UK Power Networks to reduce
> the voltage. Even though it was was on average more than 5% high, the
> technical manager who took ownership of the problem only wanted to reduce
> the voltage by 2.5%, despite they could easily reduce it 5%. Luckily, when
> the engineers came to adjust the supply voltage, (which they do by changing
> the taps on the 11 kV primary), I managed to convince them that there were
> very few properties on the transformer, and the furthest was an old couple
> that used very little electricity. So they did reduce it 5%, which is the
> maximum they could. But they warned me that if there were complaints of low
> voltage, they would have to increase it 2.5%. Luckily for me, nobody
> locally noticed the reduction in mains voltage, and it is still on average
> over 230 V.
> 
> It would be interesting to know how low the AC input can go on a 5370B
> before the regulators fail to regulate. Given they are the sort of
> instrument one might want to run for long periods, running one on a UPS,
> with a transformer to reduce the output of the UPS, might not be such a bad
> idea.
> 
> 
>> Charles
>> 
> 
> Dave
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