Can't compare the Z3805A to the HP58503A but I have found in the archives
that the Z3805A has a 16 channel GPS receiver and it is better to find the
Symmetricom labeled one as it has a real double-oven OCXO. According to a
2010 time-nut message the Z3805A is almost the same as the TBolt.
On Sat,
Hi
Ok, I've got at least one of all of these sitting in the basement. They are a
very much mixed bag. Some of the HP's are quite good. Others not so much. The
variation isn't so much model to model. They vary unit to unit. The TBolt's
vary by year. Roughly they group as pre-2001, 2001 to 2003,
Not being a time nut but a frequency nut I lack some of the time test
equipment, but my partner on our joint development work makes up for it. So he
among other things recently looked at the 1 pps output of the Tbolt against
a Cesium. Using a HP 5352A with 500 samples over 50% are within +-
Hi
If you stretch out to 10,000 samples and watch over a full 24 hour period,
you likely will see some in the +/-1.5 ns region.
Bob
On Sep 8, 2012, at 11:06 AM, ewkeh...@aol.com wrote:
Not being a time nut but a frequency nut I lack some of the time test
equipment, but my partner on our
Bob wrote:
The strange temperature chip in the later TBolts isn't much of an
issue. The chip is poorly located for temperature control. It only
seems to impact the plots on Lady Heather. Trimble wasn't bothered
enough by it to patch the firmware.
My experience is consistent with this.
For a GPS receiver that is in my book acceptable but then I am not a
time-nut. I use that signal to discipline Rb's. Works for me.
Bert Kehren
In a message dated 9/8/2012 12:47:52 P.M. Eastern Daylight Time,
li...@rtty.us writes:
Hi
If you stretch out to 10,000 samples and watch over a
Said wrote (re: eBay 58503As):
they work well for me, look brand-new, and came with power supply, rs-232
cable, and antenna. I think it's a 5V antenna. The unit had about 37000 on
the lifetime.
The seller has close up photos, that's what the units look like. I plugged
in the power, ran GPSCon
Hi fellow time nuts,
quite soon I'll have to come up with a clever idea to characterize a
few chips of a 130nm BiCMOS technology for transients. Unfortunately,
I'll have to look at something on the order of five dozen outputs per
chip, all at the same time.
If money and development time was no
Hello,
On Sat, 8 Sep 2012, Florian Teply wrote:
(..) But then I'll have to throw a few hundred Time Interval Counters
at the problem in order to get the information on the duration of the
transients. So in general, amplitude information comes from the
comparator trigger levels, time
Wow, thank you everyone for the wealth of information and advice. It
sounds like for my needs, either the TBolt or HP Z-box will do just fine,
and cost is going to be more of a driver than anything else. It seems that
the HPs are more plentiful on a certain well-known auction site, but
Hello,
Am Sat, 8 Sep 2012 19:41:28 +0200 (CEST)
schrieb Marek Peca ma...@duch.cz:
(..) But then I'll have to throw a few hundred Time Interval
Counters at the problem in order to get the information on the
duration of the transients. So in general, amplitude information
comes from the
Hello,
Well, for the CMOS stuff 100ps should do just fine. Of course, less
is better, but there's only so much one can reasonably do for so many
channels... Even a PICTIC should be able to do better than 500 ps for
a single channel. From what I've read, a few hundred units of HP5370
should
The HP5352A has a 2nS single shot resolution: how can you have 300pS or 1nS
measures?
On Sat, Sep 8, 2012 at 9:08 PM, Robert Liesenfeld xu...@xunil.net wrote:
Wow, thank you everyone for the wealth of information and advice. It
sounds like for my needs, either the TBolt or HP Z-box will do
Charles,
Not sure why this is confusing to you, he clearly explains all the differences
in the description, and what is shown in the photos is exactly what I received.
The z3805A based units cost more than Z3801As, and the ones with one or two
1pps and 10Mhz outputs cost slightly more.
He
Hi Florian,
On 09/08/2012 07:34 PM, Florian Teply wrote:
Hi fellow time nuts,
quite soon I'll have to come up with a clever idea to characterize a
few chips of a 130nm BiCMOS technology for transients. Unfortunately,
I'll have to look at something on the order of five dozen outputs per
chip,
Sorry my mistake 5372A I will send you the data direct
Bert Kehren
In a message dated 9/8/2012 6:15:59 P.M. Eastern Daylight Time,
azelio.bori...@screen.it writes:
The HP5352A has a 2nS single shot resolution: how can you have 300pS or
1nS
measures?
On Sat, Sep 8, 2012 at 9:08 PM,
Hi
You will have a tough time with the 5372 running the longer time spans…
Bob
On Sep 8, 2012, at 9:08 PM, ewkeh...@aol.com wrote:
Sorry my mistake 5372A I will send you the data direct
Bert Kehren
In a message dated 9/8/2012 6:15:59 P.M. Eastern Daylight Time,
On 09/09/2012 03:34 AM, Bob Camp wrote:
Hi
You will have a tough time with the 5372 running the longer time spans…
Yes and no. Using the 5372A internal memory, you have 8192 memory
positions to play with. You can mitigate that by parametrisation, Fast
Port or just use it as a triggered
Hi
It would be nice if somebody came up with a fast port adaptation to one of the
standard data collection programs.
Bob
On Sep 8, 2012, at 9:45 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote:
On 09/09/2012 03:34 AM, Bob Camp wrote:
Hi
You will have a tough time with the 5372
Said wrote:
Not sure why this is confusing to you, he clearly explains all the
differences in the description
I don't see anyplace where he explains all the differences, clearly
or otherwise. And as I said, ALL of the descriptions I've seen
(including the descriptions of the Z3805-based
Charles,
Because you make and post negative assumptions about a seller without any first
hand experience based on your opinion on what you consider a sub-par EBay
listing by a non-English seller.
I'd be very reluctant to count on finding anything specific inside the
housing
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