Mid-tech RX 400p, User Manual

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RX 400p
4-3 98-05044
R1
4.4.1 Position Fix Status Icon
The RX 400p provides an indication of the GPS lock status, as contained within the
GPGGA data message string output from the data port of the receiver. This
indicator is located in the lower right hand corner of the RX 400p display. Figure 4-
3, illustrates the three states of the GPS status icon.
% & ^
No GPS Fix GPS Position DGPS Position
Figure 4-3 GPS Position Fix Icon
In the first state, the two parallel vertical lines indicate that no position fix is
available. The second state, denoted by the hollow circle between the two parallel
vertical lines, indicates that the receiver is tracking four satellites or more, and is
computing an uncorrected position. This indicator is a symbol representing a GPS
satellite. The third state, denoted by the solid circle between the two parallel vertical
lines, indicates that the GPS receiver is computing differentially corrected position
solutions.
4.4.2 WAAS Lock Icon
When the RX 400p is configured to use WAAS correction information, The RX 400p
receiver will display the lock status on at the far right of the top line of the display.
The lock symbol illustrated in the following figure remains in the ‘No WAAS Lock’
position until the receiver has acquired the signal, at which point the receiver will
display the ‘WAAS Lock’ icon.