Product Manual

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 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.

NOTE: SBAS satellites are geosynchronous and centered over

the equator. The further away from the equator the GPS unit, the

less visible SBAS satellites are. The Sky Map in SatViewer will

show you the position of these space vehicles relative to your

position.

• In SiRF Bin. Mode / In NMEA Mode: indicates which mode

you are running in. Some applications may require GPS data to