Spectracom VelaSync 1225, Руководство пользователя

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1.
Navigate to INTERFACES > REFERENCES: GNSS 0 .
2.
The survey status (ACQUIRING, COMPLETE, or progress in percent) is displayed
under the line item Survey Progress.
Note: Once a survey has been initiated, the Survey Progress may
not be displayed right away until the receiver has completed its
initialization process.
3.3.3.6 GNSS Receiver Offset
The Offset setting in the GNSS configuration window ( INTERFACES > GNSS 0 >
" Edit ") allows you to enter an offset to the GNSS time and 1PPS reference in order to
account for antenna cable delays or other latencies (entered and displayed in nano-
seconds).
By setting the correct Offset value, you can offset the system’s on-time point by the
Offset value to compensate for the antenna and in-line amplifier delays. Under typical
conditions, the expected cable and amplifier delays are negligible. You can calculate the
delay based on the manufacture’s specifications.
The offset range is ±½ seconds (i.e. ±500 ms, or ±500 000 000 ns). The default value is
0 nanoseconds, and the resolution is 1 nanosecond.
Configuring a GNSS receiver offset
To configure the GNSS receiver offset:
1.
Navigate to Interfaces > References: GNSS Reference
2.
Click on the GEAR button next to the GNSS Reference. The GNSS 0 window will
open:
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CHAPTER
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VelaSync User's Manual Rev. 3
3.3 Managing References