[time-nuts] Updated Shera controller
EWKehren at aol.com
EWKehren at aol.com
Thu Jul 29 13:55:51 EDT 2010
Have you actually done it with the PRS10 and what was the result?
In a message dated 7/29/2010 1:52:08 P.M. Eastern Daylight Time,
arnold.tibus at gmx.de writes:
No problem for the PRS10 - there is an external pps input.
For the FRK-RbO I don't have a practical solution yet,
because I don't have a manual with circuit diagram found
for this 5 MHz model. This RbO is actually running free,
drift controlled by an external resistor set by two 10 turns
potentiometers. I think it should be possible to inject a
current instead. The control by eg. the Shera controller
need some modifs for this purpose which I have not yet done.
The time constant need to be modified too I think.
Am 29.07.2010 18:09, schrieb EWKehren at aol.com:
> how are you controlling the Rb with the Tbolt? Bert
> In a message dated 7/29/2010 11:10:16 A.M. Eastern Daylight Time,
> arnold.tibus at gmx.de writes:
> I'm using at the moment a thunderbolt (with spare for testpurposes
> using ext. other oscillators), a nice PRS10, a FRK-HLN-1A (5MHz with
> external doubler to 10 MHz) and several HP10811.
> I would like to build up with this a good and reliable reference
> (PPS and Frequ.). My dream would be a good autonom. TIC with timestamp
> possibility. At the moment the 53132A is doing a good job, but I miss
> the time stamp possibility and single measurements at defined time
> Am 29.07.2010 13:50, schrieb EWKehren at aol.com:
>> what do you use? Bert Kehren
>> In a message dated 7/29/2010 7:02:06 A.M. Eastern Daylight Time,
>> arnold.tibus at gmx.de writes:
>> I do, and I am also interested on other improvements!
>> Am 29.07.2010 12:49, schrieb EWKehren at aol.com:
>>> I think it would be nice to have a show of hands as to how many are
>>> a Rb to GPS and what they use.
>>> Bert Kehren
>>> In a message dated 7/29/2010 4:00:31 A.M. Eastern Daylight Time,
>>> phk at phk.freebsd.dk writes:
>>> In message <60EB5E7C69594F49B830463DC322EDB4 at athlon>, "Ulrich
>>>>> Uhm, isn't this exactly where you want to use the
>>>>> still-smelling-like-brand-new-car PICTIC II with a good DAC
>>>>> and a microcontroller ?
>>>> I guess the PICTIC II is not very good when stop pulses arrive
>>>> pulses which is a normal condition if a average time interval of
>>>> between local pps and GPS pps is the aim.
>>> So configure it to use a standard offset of one Xtal/Rb period ?
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