[time-nuts] Fwd: Re: Using a Racal 1992

[Chuck Forsberg WA7KGX N2469R]

Here is a plot from the latest GPIB hack which reads frequency and phase 
about once per second. Only the phase is shown here. Small tweeks to the 
fine freq standard adjustment take several minutes to take effect. Is 
the fine adjustment tweeking some parameter related to the oven??? On 
12/11/2011 07:34 AM, Larry McDavid wrote: > Chuck, what is the time 
scale in your plot? That is, why does "1400" = > 430 seconds? > > Larry 
 > > > On 12/10/2011 10:35 PM, Chuck Forsberg WA7KGX N2469R wrote: >> 
The 1992's A input goes to the Thunderbolt. >> The 1992's B input goes 
to its time base output. >> The counter is set to "A rel B" >> >> Here's 
a blow-up of the phase plot. In this case it takes some 430 >> seconds 
for the >> phase offset to cycle 360 degrees. In other words, there is 
1/430 Hz >> frequency difference. > ... > -- Chuck Forsberg WA7KGX 
N2469R caf at omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for 
Embedded Applications Omen Technology Inc "The High Reliability 
Software" 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
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