Order Tray | Contact Us | Home | SIG Lists

[time-freq] RefLock II behavior

Owen, Michael Michael.Owen at Sensis.com
Fri Jul 7 17:38:59 UTC 2006


Hi, Steve -
 
The package was delivered yesterday. Thank you sending it.  A couple of
questions:  I see the coaxial power socket which I assume is +12VDC.  Do
I *also* hook up the +5VDC?  Also, is the comm line 9600/n/8/1 or
something else?
 
Thanks-
MRO
 

------
Michael R. Owen, Ph.D.
Senior System Engineer
Sensis Corporation
(315) 634-3066 

	-----Original Message-----
	From: time-freq-bounces at lists.tapr.org
[mailto:time-freq-bounces at lists.tapr.org] On Behalf Of Steven Bible
	Sent: Thursday, June 22, 2006 7:10 PM
	To: TAPR time and frequency projects
	Subject: Re: [time-freq] RefLock II behavior
	
	
	Hi Luis,
	 
	Sure, I can send Mike my setup.  Mike, email me privately with a
shipping address.
	 
	I have a PICmicro reading the CPLD serial interface and sending
the value over RS-232.  All you need is a computer running a terminal
program such as Hyperterminal.
	 
	- Steve N7HPR



	 

		-----Original Message----- 
		From: Luis Cupido 
		Sent: Jun 22, 2006 5:36 PM 
		To: Steven Bible , TAPR time and frequency projects 
		Subject: Re: [time-freq] RefLock II behavior 
		
		
		The actual counter values are available on the reflock
II spi interface.
		 
		Steven, could you provide Michael a way to record the
lag counter values over time,
		is your SPI hardware ready?
		 
		Luis Cupido.
		 
		 
		 

			----- Original Message ----- 
			From: Steven Bible
<mailto:srbible at earthlink.net>  
			To: TAPR time and frequency projects
<mailto:time-freq at lists.tapr.org>  
			Sent: Thursday, June 22, 2006 9:32 PM
			Subject: RE: [time-freq] RefLock II behavior

			Hi Mike,
			 
			Perhaps as a diagnostic suggestion, can you
record the VTUNE voltage?  Then compare that with the frequency output.
This might help us understand the VCXO a little and maybe give us a
clue.
			 
			- Steve N7HPR
			
			
			

				-----Original Message----- 
				From: "Owen, Michael" 
				Sent: Jun 22, 2006 8:06 AM 
				To: TAPR time and frequency projects 
				Subject: RE: [time-freq] RefLock II
behavior 
				
				

				Dear friends,
				
				I'm still stuck with way too much 100
MHz oscillator hunting.  To eliminate the GPS 1PPS waveform as a
possible source, I changed receivers to a Trimble Resolution-T.  To
eliminate mis-assembly of the RefLock II, I am using unit #2 programmed
with r2_enhpps_30_1.  Here is the result:

				

				In the graph, samples were taken every
second after everything had run for an hour.  The system appears to be
hunting +0.3Hz to -0.1 Hz with occasional spikes. 
				 
				f_conf = 00 (0-ohm jumpers @ N1 & N2)
				avg_conf = 00 (jumpers @ N4 & N8)
				pps_pol = 0 (jumper @ N2048)
				ld_conf = 5 (jumpers @ R1,R3, R4, R5)
				
				If you have any suggestions, please
share 'em with me.
				73,
				W9IP
				------
				Michael R. Owen, Ph.D.
				Senior System Engineer
				Sensis Corporation
				(315) 634-3066
				
				

			\r\n- Steve\r\n  (n7hpr at tapr.org)\r\n

			
________________________________


			

			_______________________________________________
			time-freq mailing list
			time-freq at lists.tapr.org
	
https://lists.tapr.org/cgi-bin/mailman/listinfo/time-freq
			

	
	\r\n- Steve\r\n  (n7hpr at tapr.org)\r\n

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tapr.org/pipermail/time-freq/attachments/20060707/e45c6bc4/attachment.htm 


More information about the time-freq mailing list