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, [email protected] writes:
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 temp sensor. What would channel 4 be? Photodiode output? Channels 1 and 2 are pretty much a straight line. I think Pete figured out channel 1 was connected to a trim pot, right? Channel 2 sits at 2100 counts or so from power up 'till down, so I'm guessing a supply rail. Running graphs now for the problem child. Hopefully this weekend I'll be able to run two Rbs at the same time and see about tweaking the freq on the bad one. -- newell N5TNL _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
