Note: Behavior (a.) applies to most Trimble
®
receiver types, while behavior (b.)
applies to u-blox
®
receivers.
Verifying GNSS Survey Progress
To see if NetClock's GNSS receiver is performing a survey and if so, verify its progress:
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 pro
cess.
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 nanoseconds).
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 expec
ted cable and amplifier delays are negligible. You can calculate the delay based on the man
ufacture’s specifications.
The offset range is ±½ seconds (= ±500ms, or ±500000000 ns). The default value is 0 nano
seconds, and the resolution is 1 nanosecond.
Configuring a GNSS receiver offset
3.3 Managing Input References
CHAPTER 3 • NetClock User Reference Guide Rev. 16
195
To Next Page
Loading...
