You Are Here:

Reviewing the GNSS Reference Status

To view the current status of your GNSS reference:

  1. Navigate to INTERFACES > REFERENCES: GNSS Reference.

  2. Click the INFO button next to GNSS 0. The GNSS 0 status window will display; it contains two tabs, explained in detail below: Main [= default], and Satellite Data.
ClosedThe "Main" tab

Under the Main tab, the following information will display:

Note: Detailed information on the different parameters can be found in the subsequent GNSS topics.

  • Manufacturer/Model: The manufacturer and/or model of the GNSS receiver in your NetClock unit.
  • Validity: Status indicator lights for TIME and 1PPS signals: “On” (green) indicates a valid signal, “Off” (red) indicates that no valid signal is available. A yellow 1PPS light indicates that the monitored 1PPS value fell below a quality threshold and the unit is in flywheel mode (for more information, see Reference Monitoring: Phase).
  • Receiver Mode:
    • Single Satellite: Used in areas with poor GNSS reception.
    • Standard: Default operating mode for the GNSS receiver.
    • Mobile: For non-stationary applications.
  • Receiver Dynamics: (u-blox receivers only); see Setting GNSS Receiver Dynamics.
  • Survey Progress: Real-time status:
    • ACQUIRING (x Satellites)—red
    • SURVEYING (x %)—yellow; remains at 1% if no satellites are in view
    • COMPLETE—green
  • Number of Tracked Satellites: The number of satellites currently being tracked.
  • Offset: As set by the user, in nanoseconds.
  • Antenna Sense:
    • OK (green)
    • Open: Check the antenna for the presence of an open.
    • Short: Check the antenna for the presence of a short circuit.
  • Position: NetClock’s geographic position by:
    • Latitude: In degrees, minutes, seconds
    • Longitude: In degrees, minutes, seconds
    • Altitude: In meters MSL (Mean Sea Level)
  • Receiver Constellation: GPS/GLONASS/Galileo/BeiDou/SBAS/QZSS
  • Client A-GPS Status: A-GPS is ENABLED and running, or DISABLED
  • Client A-GPS Data: External A-GPS data is AVAILABLE, or UNAVAILABLE
  • Server A-GNSS Status: The Rinex Server feature is ENABLED and running, or DISABLED
  • Server A-GNSS Data: A-GPS data is AVAILABLE and can be downloaded by clients, or it is UNAVAILABLE
  • Identified Satellite Signal Strengths: Bar graphs for all satellites detected. Color indicates signal strength.
    With your mouse pointer, hover over a bar graph to display tool tip information about satellite constellation, satellite number, and signal strength.
    • Letter Symbol GNSS Constellation
    G GPS
    R GLONASS
    E Galileo
    J QZSS
    C BeiDou
    I IRNSS
ClosedThe "Satellite Data" tab

Under the Satellite Data tab, there are two graphs:

  • Number of Satellites over Time: A graphical track of how many satellites were being tracked over time.
  • SNR over Time: A graphical track of maximum SNR, and minimum SNR.

    • In both graphs, to see a legend of the graphical data, and time-specific status data, click inside the graph, choosing the desired point in time. If necessary, increase the time resolution by dragging the time sliders. A pop-up window will display the legend for that graph, and the status information for the selected time.