Joe
It would have been helpful to see the graph BEFORE you power-cycled if
you still have that data stream
I would not jump to any conclusions at this point until the power supply
voltages have been checked . Downloading the schematics from KO4BB.com
of the power supply and oven control circuits will give you some insight
. There are numerous test points on the power supply board which make
reading the various voltages a snap.
The 1 PPS being invalid I believe points to the fact that the DO is out
of whack not the receiver.
I see your unit now has 28,000 hours on it so it is no longer a spring
chicken for sure
Dave
On 2/25/2016 9:09 AM, Joseph Gray wrote:
Dave,
Thanks for the tips. I also got a message off list telling me about
the EFC issue and that I missed this discussion recently on the list.
Last night, I power cycled the Z3801A. It has been running all night.
Attached is the graph you requested. If I read this correctly, yes, it
looks like the unit has maxed out the EFC voltage one way.
Joe Gray
W5JG
On Thu, Feb 25, 2016 at 1:54 AM, Artek Manuals<[email protected]> wrote:
>On 2/24/2016 11:37 PM, Joseph Gray wrote:
>>
>>I just took a look at my Z3801A that has been in holdover for some
>>time. I have been too busy to do anything about it until now.
>>
>>Before looking at the receiver stats just now, my first guess was that
>>the Oncore GPS board went bad. However, I see that it is currently
>>tracking 4 sats. I also see that the 1pps is invalid. Does this still
>>point to a failed Oncore board?
>>
>>Attached is a screenshot showing the receiver stats.
>>
>>I will open this thing up over the weekend to check voltages and such.
>>Until then, any tips on where to look are appreciated.
>>
>>Joe Gray
>>W5JG
>
--
Dave
[email protected]
www.ArtekManuals.com
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