In message <[EMAIL PROTECTED]>, David Kirkby writes:
>Brooke Clarke wrote:
>> Hi David:
>>
>> It's so easy to feed the PRS10 a 1 PPS from GPS so I don't understand
>> your comment "I don't have anything locked to GPS yet, but even when I
>> do, it is not always going to be that convenient for me
Tom Van Baak wrote:
A PRS10, for example, may have 100x or better
accuracy than a typical 10811. Yet a 10811 can
easily have 2x to 10x better short-term stability
than a PRS10. You can indirectly measure this
by seeing which reference, internal or external,
gives the smallest standard deviation for
> Hi Tom,
> I was aware of the accuracy of the timebase for TI measurements is not
> that critical, and TI measurements were my reason for buying the 5370B
> rather than a normal frequency counter.
>
> However, the fact remains the 5370B is a better *frequency* counter than
> any others I have,
Tom Van Baak wrote:
That's what I was intending doing, although the adjustment as far
courser than ideal on a counter with 11 digits.
Many of us use HP 5370A/B's as *time interval*
counters; typically to precisely compare two 1 PPS
sources.
In this case the 25 ps rms single-shot resolution of
the
Brooke Clarke wrote:
Hi David:
It's so easy to feed the PRS10 a 1 PPS from GPS so I don't understand
your comment "I don't have anything locked to GPS yet, but even when I
do, it is not always going to be that convenient for me"
Hi Brooke,
I will not be able to get a GPS signal where the test-equ
> That's what I was intending doing, although the adjustment as far
> courser than ideal on a counter with 11 digits.
Many of us use HP 5370A/B's as *time interval*
counters; typically to precisely compare two 1 PPS
sources.
In this case the 25 ps rms single-shot resolution of
the counter is the
Hi David:
It's so easy to feed the PRS10 a 1 PPS from GPS so I don't understand
your comment "I don't have anything locked to GPS yet, but even when I
do, it is not always going to be that convenient for me"
Have Fun,
Brooke
--
w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~br
John Miles wrote:
Correct, the only adjustment on the 5370B is on the 10811 itself.
Cheers. I thought that was the case, but confirmation is never a bad thing.
The best
way to set it is to note the deviation after a long warmup with the counter
covers in place, then take everything apart and adjus
Correct, the only adjustment on the 5370B is on the 10811 itself. The best
way to set it is to note the deviation after a long warmup with the counter
covers in place, then take everything apart and adjust the 10811 to remove
the same amount of deviation. (If you set it to 10.0 MHz with t
