Spectracom VelaSync 1225, User Manual

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The Oscillator History Panel offers real- time graphical monitoring of VelaSync’s
internal timing. The following graphs plot key oscillator-relevant data over time::
Phase Error Magnitude : See 1PPS Phase Error
Frequency Error : See 10_MHz_Frequency_Error
Scaled DAC Value : See DAC Step
Oscillator Temperature , which has an effect on oscillator accuracy, and there-
fore can be used to interpret oscillator performance.
You can zoom in on any of the graphs by grabbing the handles at either end and pulling
them inwards. The graph will focus in on the time interval you choose in real time.
Clicking on the Delete icon in the top-right hand corner will erase all current oscillator
log data.
Clicking on the Download arrow icon will download the latest oscillator log data as a
.
csv
file.
4.7.2 Logs
VelaSync maintains different types of event logs (see below) to allow for traceability,
and for record keeping. Should you ever require technical support from Spectracom,
you may be asked for a copy of your logs to facilitate remote diagnosis.
Logs stored internally are being kept automatically, while the storage of log files in a
remote location has to be set up by the user.
For each type of log, four 75 KB files are maintained internally on a revolving basis, i.e.
the oldest file will be overwritten, as soon as all four files have filled up with event data.
The life expectancy of a log file depends on the amount of data accumulating over time:
Some types of logs will fill up within days, while others can take months until they have
reached their maximum storage capacity.
You can delete logs at any time, see "Clearing All Logs" on page 204 .
4.7.2.1 Types of Logs
VelaSync generates log files for the following event categories:
Alarms Log
Displays log entries for the Timing System, for example:
The Unit has Rebooted : VelaSync was either rebooted or power cycled.
In Holdover : Input references were available, but all input references have since
been lost. If the references are not restored before the Holdover period expires,
time sync will be lost.
4.7 Quality Management
CHAPTER
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