Product Manual

35
Sky Tab
Sky Plot Graphic: The Sky Plot is a
graphical representation of where the
satellites are positioned in the sky. The
top of the circle represents north, the
center is straight up, and the farthest right
point is east. The outer blue circle
represents the horizon and the red circle
represents the elevation mask. The light
gray circles radiating out from the center
are the zenith angles in ten degree
increments. The lines bisecting the light
gray circles divide the circle into thirty
degree azimuths.
The satellite icons are color coded to indicate if they are used, unused,
or SBAS satellites. Each icon is labeled with the corresponding
satellite's ID number (PRN). If Leave satellite SNR trails is checked,
the path of the satellites are also marked by a dotted line as each
satellite moves across the sky.
Status Indicators: The following four messages are displayed around
the sky plot to indicate the current settings configured on other pages:
 Corrections Disabled / SBAS Enabled: displays if Satellite
Based Augmentation System (SBAS) is enabled or disabled.
When SBAS is enabled, your Nomad GPS receiver will attempt
to locate, track and use correctional data supplied from an SBAS
satellite in order to improve accuracy. There are a limited
number of SBAS satellites available, so they may not be readily
accessible in your area. This setting is configured in the Type
field on the DGPS page.
 In SiRF Bin. Mode / In NMEA Mode: indicates which mode
you are running in. Some applications may require GPS data to
be sent to the application in the form of a NMEA message,
where other applications require the GPS data be sent as a SiRF
Binary message. Most mapping and navigation applications can
use the NMEA message. This setting is configured with the
NMEA/SiRF Binary radio buttons on the GPS page.