Maybe there is a way to vary the C field through a digital command, in
one of their specifications I noticed a spec that stated that the frequency
can be set in 1 E-13 steps. Is there a DAC on the board?
Bert Kehren
In a message dated 1/20/2012 12:52:48 A.M. Eastern Standard Time,
be needed
sooner rather than later ...
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of John Beale
Sent: Friday, January 20, 2012 1:29 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Progress on the FE
[Resend due to oops last night involving multiple email accounts.]
And here are the graphs from unit #1, the one that won't lock:
http://n5tnl.com/time/fe-5680a/graphs/fe5680_1_ch3.png
http://n5tnl.com/time/fe-5680a/graphs/fe5680_1_ch4.png
--
newell N5TNL
Here's some data from one of my working FE-5680A units:
http://n5tnl.com/time/fe-5680a/graphs/fe5680_2_ch3.png
http://n5tnl.com/time/fe-5680a/graphs/fe5680_2_ch4.png
This assumes that the reply from the undoc command 0x5a is the raw
counts from the 4 channel 12 bit ADC. I think channel 3 is a
On 1/19/2012 9:52 PM, Scott Newell wrote:
http://n5tnl.com/time/fe-5680a/graphs/fe5680_2_ch3.png
http://n5tnl.com/time/fe-5680a/graphs/fe5680_2_ch4.png
This assumes that the reply from the undoc command 0x5a is the raw counts
from the 4 channel 12 bit ADC. I think channel 3 is a temp sensor.
