[time-nuts] HP 10811A vs 10811-60111
David Kirkby
david.kirkby at onetel.net
Sat Apr 23 18:10:14 EDT 2005
Had wrote:
>
> David,
>
> Take a look at this page:
> http://www.febo.com/time-freq/hardware/HP10811-Specs.pdf
>
> Had, K7MLR
Thanks, I had finally found that.
Section 6 clearly shows the performance of the 10811-60111 and comparing
it with the specs for the HP 10811A it is clear an 10811-60111 only has
to meet a stability over 1 second of < 10^-11, whereas the 10811A has to
meet a stability reqirement that is twice as stringent, and has to meet
lots of other specifications too, none of which the 10811-60111 has to
meet.
>
> At 07:32 AM 4/23/2005, you wrote:
>
>> Can anyone tell me the difference between the two above oscillators? I
>> have the manual for the 97page manual (page 2 is upside down), but it
>> does not mention the latter.
>>
>> However, I think I have seen a small couple of page document somewhere
>> which listed the 10811-60111 as having no specification for phase
>> noise, and so therefore not an ideal choice for a low phase noise
>> oscillator. One might as well start with something that is specified
>> for a low phase noise.
>>
>> I can't however now find the exact spec of the 10811-60111. Can anyone
>> give me it?
>>
>> I won an auction for a 10811A on eBay and the seller said I could have
>> a 10811-60111 for the same price if I wanted it too. I said no, I
>> wanted the 10811A, but he has sent me the 10811-60111 instead.
>>
>> Is the 10811-60111 inferior? How does it differ from the 10811A?
>>
>> --
>> Dr. David Kirkby,
>> G8WRB
>>
>> Please check out http://www.g8wrb.org/
>> of if you live in Essex http://www.southminster-branch-line.org.uk/
>>
>>
>>
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>
>
>
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--
Dr. David Kirkby,
G8WRB
Please check out http://www.g8wrb.org/
of if you live in Essex http://www.southminster-branch-line.org.uk/
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