Orolia Spectracom VelaSync 1232, Руководство пользователя

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1.
Navigate to MANAGEMENT > OTHER: Disciplining .
2.
The Oscillator Management screen will display. It consists of two panels:
The Oscillator Status Panel
This panel provides comprehensive information on the current status of VelaSync's timing
state.
Oscillator Type : Type of oscillator installed in the unit.
Disciplining State : State of oscillator control and disciplining; indicates whether or
not the internal oscillator is currently being disciplined (steered to an input ref-
erence). The states are: "Warm up", "Calibration", "Tracking Setup", "Lock State",
"Freerun", and "Fault".
1PPS Phase Error : A tracking measurement [scaled time, in ns, or ms] of the internal
1PPSs' phase error with respect to the selected input reference. Long holdover peri-
ods or an input reference with excessive jitter will cause the phase error to be high.
The oscillator disciplining control will gradually reduce the phase error over time.
Alternatively, restarting the tracking manually (see "Restart Tracking" under
"Con-
figuring the Oscillator" on page 153 ), or automatically via a pre-set Phase Error
Limit, will quickly reduce the phase error.
10 MHz Frequency Error : An internal estimated calculation (in Hertz) of the internal
oscillator's frequency error, based on the phase accuracy error at the beginning and
end of a frequency measurement window (the length of this window will vary
3.4 Managing the Oscillator
CHAPTER
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VelaSync 1232 User Manual Rev. 4 157