Re: [time-nuts] 58503A alarm light on, but :SYSTEM:STATUS? indicates all is ok

2015-04-04 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
On 1 Apr 2015 23:24, Bob Camp kb...@n1k.org wrote: HI Best guess is that your antenna is not doing the job. That's possible. It was supposed to be an Andrews antenna, but there's nothing on it to indicate that to me. But it is well sited. I expect antenna issues can explain the log entry

[time-nuts] 58503A alarm light on, but :SYSTEM:STATUS? indicates all is ok

2015-04-01 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
Yesterday (31st March 2015) the GPS lock light of my 58503A went out and the Holdover light came on. The Alarm LED was *not* on. It had been like this for an hour or more. I removed the N connector, could see there was 5V DC on the antenna, and a visual inspection of the antenna cable did not give

Re: [time-nuts] 58503A alarm light on, but :SYSTEM:STATUS? indicates all is ok

2015-04-01 Thread Chuck Harris
I can't help but notice that you have several of these entries: Log 067:20150101.00:00:11: 5V is out of tolerance, value: 5.52 Log 068:20150101.00:00:11: 15V is out of tolerance, value: 19.46 I think you better look into them before anything else. -Chuck Harris Dr. David Kirkby (Kirkby

Re: [time-nuts] 58503A alarm light on, but :SYSTEM:STATUS? indicates all is ok

2015-04-01 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
On 1 April 2015 at 17:39, Chuck Harris cfhar...@erols.com wrote: I can't help but notice that you have several of these entries: Log 067:20150101.00:00:11: 5V is out of tolerance, value: 5.52 Log 068:20150101.00:00:11: 15V is out of tolerance, value: 19.46 I think you better look into them

Re: [time-nuts] 58503A alarm light on, but :SYSTEM:STATUS? indicates all is ok

2015-04-01 Thread Bob Camp
HI Best guess is that your antenna is not doing the job. If the HP is in lock long enough to predict a good holdover (there are multiple limits) you can have holdover with no alarm. If it goes into holdover and is not “ok” by the various limits, you will get an alarm + holdover. After being