Jackson Labs Micro-JLT GNSS, Руководство пользователя

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Micro-JLT GNSS™ User Manual
3.10.9 SERVo:AGINGcompensation <float> [-10.0,10.0]
This parameter is a coefficient that represents the drift of the EFC needed to compensate the natural
drift in frequency of the OCXO due to aging. This coefficient is automatically computed and adjusted
over time by the Jackson-Labs firmware. This command has the following format:
SERVo:AGINGcompensation <float> [-10.0,10.0]
This command will query the state of this command:
SERVo:AGINGcompensation?
3.10.10 SERVo:PHASECOrrection <float> [-500.0,500.0]
This parameter sets the Integral part of the PID loop. Loop instability will result if the parameter is
set too high. Typical values are 10.0 to 30.0. This command has the following format:
SERVo:PHASECOrrection <float> [-500.0,500.0]
This command will query the state of this command:
SERVo:PHASECOrrection?
3.10.11 SERVo:1PPSoffset <int> <ns> [-5000000,5000000]
This command sets the Micro-JLT GNSS™ 1PPS signal’s offset to UTC in 5.55ns steps. The
maximum configurable 1PPS offset is +/- 5ms.
Using the SERV:1PPS command results in immediate phase change of the 1PPS output signal.
This command has the following format:
SERVo:1PPSoffset <int> <ns> [-5000000,5000000]
This command will query the state of this command:
SERVo:1PPSoffset?
3.10.12 SERVo:TRACe <int> [0,255]
This command sets the period in seconds for the debug trace. Debug trace data can be used with
Ulrich Bangert’s “Plotter” utility or Excel etc. to show UTC tracking versus time etc.
This command has the following format:
SERVo:TRACe <int > [0,255]
This command will query the state of this command:
SERVo:TRACe?
An example output is described here:
08-07-31 373815 60685 -32.08 -2.22E-11 14 10 6 0x54
[date][1PPS Count][Fine DAC][UTC offset ns][Frequency Error Estimate][Sats Visible][Sats
Tracked][Lock State][Health Status]