Humminbird HELIX 9 Operation Manual page 12

Check GPS Reception
Use the instructions in this section to confirm the control head has GPS reception.
1. Press and hold the VIEW key.
2. Select System > GPS Diagnostic View.
Confirm Fix Type is shown as Enhanced or 3D.
Confirm that the latitude/longitude position readout is displayed.
active satellite signal strength (yellow)
monitored satellite
signal strength
(gray)
fix type shown as
enhanced
latitude/longitude
position
GPS Reception: The sky chart displays the satellite number and signal strength bar.
GPS Fix Type: reported as No Fix, 2D Fix, 3D Fix, or Enhanced. An Enhanced Fix has been augmented using information from
WAAS, EGNOS, or MSAS.
HDOP (the Horizontal Dilution of Precision): a GPS system parameter which depends on the current satellite configuration.
HDOP is used to calculate the Estimated Position Error.
NOTE: To manually change your GPS source, see Manage your Control Head.
Getting Started
Reviewing GPS Reception
12