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Reference
Status Page Options
The ‘DGPS Rcvr’ and ‘Diff SNR’ fi elds appear below the ‘Accuracy’ and ‘DOP’ fi elds. The Differential
Receiver status will show one of the following:
• Off— No optional beacon receiver attached or enabled in the Comm menu
• No Signal— DGPS receiver attached, but not transmitting RTCM data to GPS
• Tuning— Receiver is tuning manual frequency
• Scanning— DGPS receiver is scanning for available frequency
• Rcving— Unit is receiving DGPS corrections
• Chk Wiring— DGPS is enabled in Comm menu, but no DGPS receiver attached or bad corrections
• WAAS— The unit is receiving ‘WAAS’ data
The Differential SNR (Signal to Noise Ratio) indicates, on a scale to 0-30db with 30db being the
best, the strength of the DGPS signal being received. If no optional DGPS receiver is used with the
GPSMAP 168 Sounder, the ‘DGPS Rcvr’ fi eld will display ‘Off’ and the ‘DGPS SNR’ fi eld will be blank.
The SNR will depend upon the mounting of your DGPS receiver and the distance from the DGPS
transmitting station.
Many features of the GPSMAP 168 Sounder are menu driven. Each of the main pages has an
options menu, allowing you to custom tailor the corresponding page to your preferences and/or select
special features that specifi cally relate to that page.
The GPSMAP 168 Sounder’s Status Page features an options menu that provides access to functions
and features relating to the Status Page.
To display the Status Page options:
1. Press MENU.
To select a menu option:
1. Using the ARROW KEYPAD, highlight the desired option and press ENTER/MARK.
DGPS Receiver Status
SNR Strength
168 Manual Part 1.indd 22 11/18/2002, 3:36:29 PM