[time-nuts] Rb vs.Crystal OCXO
Said Jackson
saidjack at aol.com
Sun Apr 27 17:14:08 EDT 2014
Bill,
There is an easier method that does not jiggle the board mechanically:
The command:
sync:hold:init
Disables the disciplining.
sync:hold:rec:init
Re-enables disciplining.
The sync:tint? command can be used to check the drift while in holdover..
Bye,
Said
Sent From iPhone
On Apr 27, 2014, at 10:04, Bill Dailey <docdailey at gmail.com> wrote:
> I unplug the antenna from my fury boards. I hope this is an effective alternative.
>
> Sent from mobile
>
> On Apr 27, 2014, at 9:02 AM, "Tom Van Baak" <tvb at LeapSecond.com> wrote:
>
>>> The Pendulum GPS-88 and GPS-89 have a button on the front you push when
>>> you want to force it into hold-over to do your measurement, for this
>>> very reason.
>>>
>>> PPS steering and OCXO steering is the same thing once you forced the PPS
>>> into the right range. Some *really* depend on the synchronicity between
>>> 10 MHz and PPS, and you should not obscure it if possible.
>>>
>>> Cheers,
>>> Magnus
>>
>> When doing a sensitive measurement where stability is more important than accuracy I turn off GPS disciplining.
>>
>> The TBolt has commands to go into and out of holdover. But more effective are the 0x8E,0xA3,4 and 0x8E,0xA3,5 commands which simply disable and enable disciplining.
>>
>> /tvb
>>
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