[time-nuts] LadyHeather Cabledelay - positive or negative ?

[Bob Camp]

Hi

Quick check:

1) Fire up two TBolts, hook up a scope between the PPS's (trigger on A,
watch B)
2) Change the antenna delay by +500 ns on B (needs to be N x 100 ns).
3) Pulse moves early or late . If it moves early then it's compensating for
500 ns of cable delay.

Bob


-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Mark Sims
Sent: Thursday, May 03, 2012 1:24 PM
To: time-nuts at febo.com
Subject: [time-nuts] LadyHeather Cabledelay - positive or negative ?


The documentation says that you should use negative values to compensate for
the cable delay,  but  all of my units were removed from service with
positive or zero delays set.  Lady Heather sort of assumes positive values,
but you can enter negative ones.  Which is correct remains a mystery since I
don't have a trusty independent reference to compare to.

 		 	   		  
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