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 >_______________________________________________ >time-nuts mailing list -- [email protected] >To unsubscribe, go to >http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >and follow the instructions there. Bill Beam NL7F
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