[time-nuts] Am I doing something wrong?

[Bill Beam]

I am not sure, but I belive that DAC steering may be derived from GPS PPS
compared to osc derived PPS signal.  There may be a component failure
blocking the PPS signal(s).  Is there a pulse on the PPS output port?

There is no documentation of the hardware available....


On Wed, 25 Sep 2019 12:20:08 -0400, Roger Rehr W3SZ wrote:

>Thanks to Bill and Mike for the very helpful info!
>Unfortunately, doing warm reset, cold reset, factory reset, multiple 
>self surveys did not solve the problem.
>Forcing Disciplining to Enabled did not help.
>Tuning the oscillator did not help.

>I can manually control the DAC voltage using appropriate commands and 
>the 10 MHz output changes appropriately following each manual command.
>But the DAC voltage doesn't respond to GPS input.

>I note from my old records that when the unit is working properly and 
>the DAC IS being controlled by the GPS, Lady Heather still says "Doing 
>fixes", because fixes are in fact being done.-  But when Lady Heather is 
>working properly, she says that the Discipline mode is "Normal" instead 
>of "Power-Up" as she does now.

>I used TBoltMon.exe to see if I could get any more info on the problem.-  
>In TBoltMon.exe's GUI under "Disciplining Status" Mode is listed as "(1) 
>Power-up" and Activity is listed as "(1) Osc Warm-up".

>So I wondered if the problem is that the Thunderbolt thinks that the 
>oscillator has not warmed up and therefore won't come out of Power-Up 
>mode.-  But the manual says that the Tunderbolt won't start acquiring 
>satellites and do the self survey until it has warmed up.-  And the 
>situation is that it has acquired satellites and it has done the self 
>survey, both of which would suggest that it thinks that the oscillator 
>HAS warmed up.-  The the TBoltMon reading on the oscillator status seems 
>to be inconsistent with how the Thunderbolt is performing;-  it is acting 
>like the oscillator IS warmed up, at least in some respects.

>Are there any schematics or diagrams or service manuals available for 
>the Thunderbolt?-  I couldn't find any with Google.

>Thanks again to Bill and Mike and all for your help!

>73,

>Roger
>W3SZ


>On 9/24/2019 1:32 PM, Roger Rehr W3SZ wrote:
>> HI All,
>>
>> I am wondering if I have set up my Trimble Thunderbolt wrong.
>>
>> I have corrected for roll-over and everything looks good in Lady 
>> Heather but the Thunderbolt stays in Power-up mode according to Lady 
>> Heather, and is always "doing fixes" even though I have entered the 
>> lat and lon for a fixed location.
>>
>> According to Lady Heather Disciplining is OK, and of course the log 
>> reflects this as well
>>
>> #! new minor alarm state 0800:-  Tracking sats- -  Discipline OK- -  : at 
>> tow 235167
>>
>> You can see the situation from this screen grab of Lady Heather:
>> http://w3sz.com/TrimbleLadyHeather.PNG
>>
>> Have I done something wrong in configuration, or is this consistent 
>> Power-up mode and "doing fixes" notation the expected behavior?
>>
>> I am using the Thunderbolt as at 10 MHz source for my microwave station.
>>
>> Thanks in advance and 73,
>>
>> Roger Rehr
>> W3SZ


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Bill Beam
NL7F